Abstract: In a refrigeration cycle device, a design volume ratio, obtained by dividing a stroke volume of a sub-compressor by a stroke volume of an expander, is set to be smaller than (DE/DC)×hE?hF)/(hB?hA). With an operating efficiency being the maximum in an operating range allowed to be set of the refrigeration cycle device, DE is a density of a refrigerant, which has flowed out from a radiator, DC is a density of the refrigerant, which has flowed out from an evaporator, hE is a specific enthalpy of the refrigerant flowing into the expander, hF is a specific enthalpy of the refrigerant, which has flowed out from the expander, hA is a specific enthalpy of the refrigerant sucked by a main compressor, and hB is a specific enthalpy of the refrigerant at an intermediate position of a compression process of the main compressor.

Abstract: An air conditioning apparatus includes a defrosting flow channel mechanism. The air conditioning apparatus performs an air-warming defrost operation in which refrigerant sent from an indoor heat exchanger to an outdoor heat exchanger is evaporated while defrosting an arbitrarily selected heat exchange path using the defrosting flow channel mechanism. In the defrost operation, the refrigerant sent to the outdoor heat exchanger from the indoor heat exchanger is not channeled into the refrigerant flow diverter but is passed through the arbitrarily selected heat exchange path from the gas-side end to the liquid-side end of the arbitrarily selected heat exchange path, and the refrigerant passed through the arbitrarily selected heat exchange path flows through the refrigerant flow diverter to be passed through other heat exchange paths other than the arbitrarily selected heat exchange path from the liquid-side end to the gas-side end of the other heat exchange paths.

Abstract: The present invention relates to a hybrid vapor compression—absorption cooling or heating system and apparatus containing a refrigerant pair comprising at least one refrigerant and at least one ionic liquid. The present invention also provides for the performance of a hybrid vapor compression—absorption cycle that utilizes refrigerants and absorbents such as fluorocarbon gases in fluorinated ionic liquids. The present invention also provides a method of cooling by the execution of a hybrid vapor compression—absorption cycle using a refrigerant pair comprising at least one refrigerant and at least one ionic liquid. The present invention also provides a method of heating by the execution of a hybrid vapor compression—absorption cycle using a refrigerant pair comprising at least one refrigerant and at least one ionic liquid.

Abstract: A system using waste heat of a refrigeration unit to heat a food product, having a heating loop connected to a refrigeration unit between the compressor and the condenser, and configured to allow refrigerant to enter the heating loop to transfer heat to a food product.

Abstract: A refrigeration cycle is operated in conjunction with various thermodynamic cycle working fluid circuits to cool a target fluid that may be used in a separate system or duty. In one embodiment, the refrigeration cycle includes an ejector that extracts a motive fluid from the working fluid cycles in order to entrain a suction fluid that is also extracted from the working fluid circuits. Expanding the suction fluid reduces the pressure and temperature of the suction fluid for cooling the target fluid in an evaporator, which evaporates the suction fluid before being entrained into the ejector by the motive fluid. A mixed fluid is discharged from the ejector and injected into the working fluid circuits upstream from a condenser that cools the mixed fluid and the working fluid circulating throughout the working fluid circuits.

Abstract: An air conditioner includes a first compressor and a first indoor heat exchanger, and the air conditioner forming a first refrigeration cycle. A cooler includes a second compressor and a second indoor heat exchanger, and the cooler forming a second refrigeration cycle The cooler includes a sensing part to detect a pressure and/or temperature of a refrigerant circulating in the second refrigeration cycle; and a branch part includes a plurality of branches for dividing the refrigerant to be introduced into the second heat exchange part.

Abstract: A variable-damper multi-function heat pump air conditioner includes a housing defining a lower chamber and an upper chamber with a respective indoor-facing/outdoor-facing inlet and indoor-facing/outdoor-facing outlet, a lower damper and an upper damper respectively mounted in the lower chamber and the upper chamber, and an evaporator and a condenser of an air-conditioning system respectively mounted in the lower chamber at two opposite sides so that the air conditioner can run under the mode of cooling function in hot weather, the mode of heating function in cold weather, the mode of indoor-air and outdoor-air exchanging with/without cooling function in hot weather, the mode of indoor-air and outdoor-air exchanging with/without heating function in cold weather, the mode of one-fan-operation-only energy-saving quiet indoor-air and outdoor-air exchanging function, or the mode of dehumidifying with heating function in cold and humid weather by means of selectively controlling the operation of fans of the air-con

Abstract: Method of operating a heat pump dryer, the heat pump tumble dryer including a process air circuit and a heat pump unit having a refrigerant evaporator for cooling process air, a primary refrigerant condenser for heating process air, an auxiliary refrigerant evaporator arranged outside the process air circuit and connected between the primary refrigerant evaporator and a compressor of the heat pump unit, and at least one auxiliary fan adapted to impinge an air stream at the auxiliary heat exchanger.

Abstract: A climate control system for a vehicle with a passenger compartment includes a heater circuit, a cooler circuit, and a primary loop, all of which have fixed flow directions. The heater circuit is filled with a first liquid medium and has a heater core, and the cooler circuit is filled with a second liquid medium and has a cooler core. The heater and cooler cores are selectively in thermal communication with the passenger compartment. The primary loop includes a compressor and an expansion valve and is filled with a refrigerant medium. No portion of the primary loop is within the passenger compartment. A liquid-cooled condenser thermally links the heater circuit and primary loop. A liquid-warmed evaporator thermally links the cooler circuit and primary loop. The primary loop is in direct heat-exchange communication with one of the first liquid medium and the second liquid medium.

Abstract: A liquid circulation heating system performs air-heating by heating a liquid to produce a heated liquid and releasing heat of the heated liquid from a heating radiator. This liquid circulation heating system includes: a heat pump circuit for circulating a refrigerant, having a radiator for heating the liquid by radiating heat from the refrigerant; and a solar heating apparatus for heating the liquid by solar heat. In this liquid circulation heating system, a first passage passing through the radiator and a second passage passing through the solar heating apparatus are formed as passages through which the liquid flows to produce the heated liquid.

Abstract: Disclosed herein are a cooling apparatus and a control method thereof. The cooling apparatus using latent heat of a refrigerant includes evaporators evaporating the refrigerant, a compressor compressing the evaporated refrigerant to a high pressure, defrosting heaters removing frost accumulated on the evaporators, a driving unit providing driving current selectively to the compressor or the defrosting heaters, and a control unit controlling the driving unit to provide driving current to the compressor in a cooling operation mode and controlling the driving unit to provide driving current to the defrosting heaters in a defrosting operation mode. The cooling apparatus controls the defrosting heaters using a driving circuit controlling the compressor, and thus lowers the manufacturing costs of a refrigerator operated at DC power.

Abstract: In vehicle air-conditioning devices including a refrigerant circuit having a compressor, an outdoor heat exchanger, an expansion device, and an indoor heat exchanger that are connected by refrigerant pipes to form a refrigeration cycle; an indoor air-sending device that supplies air to the indoor heat exchanger; and an outdoor air-sending device that supplies air to the outdoor heat exchanger, the refrigerant circuit is installed under the floor of a vehicle and uses carbon dioxide as the refrigerant.

Abstract: A hot water supply system includes a hot water storage tank configured to store hot water, a plurality of temperature sensors that are installed in the height direction of the water storage tank and that detect temperatures at their installed positions, a main-unit-side hot water supply device that heats hot water in the hot water storage tank, a sub-unit-side hot water supply device, a main-unit-side control board equipped with control means that controls the corresponding hot water supply device, and a sub-unit-side control board. Signals sent from the temperature sensors are input in a distributed manner among the main-unit-side control board and the sub-unit-side control board, and each of the control boards are communicably connected to each other by a transmission line.

Abstract: A humidity controlling ventilator includes: an air flow rate calculator configured to calculate an air volume flow rate of an air blowing fan based on a specific volume of air located downstream of an adsorption heat exchanger and an air mass flow rate of the air blowing fan; and an air blow controller configured to control the air blowing fan such that the air volume flow rate calculated by the air flow rate calculator approaches a predetermined target air volume flow rate.

Abstract: A fluid temperature control installation for a rotorcraft, the installation comprising a system for cooling a main transmission (3) and a system for temperature control of the ambient air (32) of a cabin (16). A heat exchanger (8) is fitted with a bladeless ventilator (9). A source air stream (11) generated by an accessory compressor (5) driven by the main transmission (3) passes through the heat exchanger (8) where it takes heat. The source air stream (11) is distributed selectively to the bladeless ventilator (9) to generate a cooling air stream (13) passing through the heat exchanger (8), and/or is distributed to the cabin (16) after passing through the heat exchanger (8) in order to heat the ambient air (32) of the cabin.

Abstract: The invention relates to an air-conditioning system for a motor-driven vehicle, having a refrigerant circuit (20) with a plurality of heat exchangers (4, 24) through which a refrigerant can be conducted for an exchange of heat with the air which flows through them, with it being possible for the heat exchangers (4, 24) to be operated as heaters or as evaporators as a function of the operating state of the air-conditioning system, and at least one third heat exchanger (16) is provided in the refrigerant circuit (20), which third heat exchanger (16) serves for an exchange of heat with a coolant circuit (13) which is formed separately from the refrigerant circuit (20). The vehicle can be both a motor vehicle and also a fuel-cell-driven vehicle.

Abstract: An apparatus includes a mechanical refrigeration cycle arrangement having a working fluid and an evaporator, a condenser of adjustable surface area, a compressor, and an expansion device, cooperatively interconnected and containing the working fluid. The apparatus also includes a drum to receive clothes to be dried, a duct and fan arrangement configured to pass air over the condenser and through the drum, a sensor located to sense at least one parameter, and a controller coupled to the sensor, condenser and/or the compressor. The controller is operative to adjust the condenser to increase surface area during a steady state drying rate period of the cycle, and adjust the condenser to decrease surface area during a start transient period of the cycle, wherein adjusting the condenser to decrease surface area during a start transient period of the cycle accelerates the start transient period of the cycle.

Abstract: An air dehydration and heating device can include a first evaporator serpentine and a second evaporator serpentine in parallel and in series with at least one condenser serpentine; a first outside air intake damper for the first evaporator serpentine and a second outside air intake damper for the second evaporator serpentine; a fan motor to drive a fan; a drying air outlet duct to receive air moved by the fan, the air having passed through at least one of the first evaporator serpentine and the second evaporator serpentine and at least one of the at least one condenser serpentine; a return drying air intake damper in a return drying air intake duct; and a processor to control temperature and humidity of drying air in the drying air outlet duct.

Abstract: A dehumidification apparatus comprises an air inlet configured to receive an inlet airflow that is separated into a process airflow and a bypass airflow. An evaporator unit is operable to cool the process airflow by facilitating heat transfer from the process airflow to a flow of refrigerant as the process airflow passes through the evaporator unit. A condenser unit operable to (1) reheat the process airflow by facilitating heat transfer from the flow of refrigerant to the process airflow as the process airflow passes through a first portion of the condenser unit, and (2) heat the bypass airflow by facilitating heat transfer from the flow of refrigerant to the bypass airflow as the bypass airflow passes through a second portion of the condenser unit. The process airflow is discharged into the structure via a process airflow outlet and the bypass airflow is discharged into the structure via a bypass airflow outlet.

Abstract: An air conditioning system using outdoor air has a first heat exchanger, an evaporator, a condenser, and a first fan disposed on the interior side; and a second heat exchanger and a second fan disposed on the exterior side. An expansion valve and a compressor are further provided. An air conditioner has a first piping connected to the evaporator, the condenser, the expansion valve, and the compressor, for circulating a first refrigerant to perform a compression-type refrigeration cycle. An indirect outdoor air cooler has a second piping connected to the first heat exchanger and the second heat exchanger for circulating a second refrigerant to induce a heat exchange in the first heat exchanger between the second refrigerant and the indoor, and to induce a heat exchange in the second heat exchanger between the outdoor air and the second refrigerant.

Abstract: The disclosure relates to a unitary heat pump air conditioner (Unitary HPAC) that includes a refrigerant loop having a condenser, a refrigerant expansion device, and an evaporator hydraulically connected in series. An electrically driven compressor is provided to circulate a two-phase refrigerant through the refrigerant loop to transfer heat from the evaporator to the condenser. The unitary HPAC also includes a cold side chiller configured to hydraulically connect to a cold side coolant loop and is in thermal communication with the evaporator. The unitary HPAC further includes a hot side chiller configured to hydraulically connect to a hot side coolant loop and is in thermal communication with the condenser. The refrigerant loop transfer heat from the cold side chiller to the hot side chiller, thereby cooling the cold side coolant loop and heating the hot side coolant loop. The components of the unitary HPAC are mounted on a common platform.

Abstract: An apparatus for heating an operating fluid, the apparatus comprising a closed circuit for a working fluid, the closed circuit having first and second heat exchangers and a compressor therebetween, the first heat exchanger having a heat input side for connection to an external fluid heat source and a heat output side for vaporising working fluid within the closed circuit, the compressor being a vapour compressor adapted to compress the vaporised gaseous working fluid from the first heat exchanger to form a higher pressure gaseous working fluid, and the second heat exchanger having a heat input side for receiving and condensing the higher pressure gaseous working fluid from the compressor and a heat output side for heating an external operating fluid. A corresponding method is also disclosed.

Abstract: There is provided a refrigeration cycle apparatus in which an outdoor heat source unit, an indoor unit, and a water heating unit are connected, and an air conditioning operation and a water heating operation can be performed separately, and an exhaust-heat recovery operation can be performed by simultaneously performing air cooling and water heating. The outdoor heat source unit includes a compressor for compressing refrigerant, a refrigerant air-heat exchanger that performs heat exchange between the refrigerant and outside air, a fan for cooling the refrigerant air-heat exchanger, a control device that includes an inverter device for driving the compressor, and a heat sink for dissipating heat of the inverter device, and a switching element in the inverter device is constituted by an element formed by a wide bandgap semiconductor.

Abstract: A waste heat recovery system of an internal combustion engine, in which regenerative energy transmitted to the internal combustion engine is increased with a simple mechanism. A controller of the waste heat recovery system of an internal combustion engine makes a determination as to whether it is necessary to increase the pressure of heat-transfer media in a heat exchanger, on the basis of the pressure detected by the high-pressure sensor. When it is necessary to increase the pressure in the heat exchanger, the controller causes a flow-rate regulating valve to start regulating the flow rate of the heat-transfer media while leaving the pump working. The controller causes the flow-rate regulating valve to continue the regulation at least until it is not necessary to increase the pressure in the heat exchanger, and then terminates the regulation.

Abstract: An improved reversible cycle heat pump system incorporating powered subcooling to increase heating capacity by over 50 percent over conventional heat pump technology without imposing a performance penalty; wherein over 21 percent is attributable to evaporator capacity gained by subcooling, over 21 percent is attributable to recovery and utilization of sensible heat energy removed as a by-product of subcooling, and over 8 percent is attributable to recovery and utilization of sensible heat energy resulting from the conversion of electric energy to mechanical work, heat of compression, and mechanical heat of friction. The powered subcooling improvement is also easily installed as original equipment, or retrofitted to existing heat pump systems.

Abstract: A method and system of utilizing waste heat from a plurality of data center equipment comprising the steps of collecting waste heat from a plurality of data center equipment and utilizing said waste heat as the driving heat input for a heat driven engine. Heat recovery means collects waste heat from heat-producing equipment and transfers it in the form of hot water to drive a heat driven engine such as a chiller or heat pump. The output of the heat driven engine may be put to many productive uses, thereby reducing the over all energy load on the data center.

Abstract: A method for controlling temperature of a refrigerator including a main body having at least first and second adiabatic spaces; a refrigerant compression cycle device including an evaporator, a compressor, a condenser, and an expander installed within the main body; and a heating unit transferring heat of a refrigerant discharged from the condenser to air in the second adiabatic space, includes: measuring an internal temperature of the second adiabatic space; bypassing the refrigerant discharged from the condenser to the second adiabatic space when the measured internal temperature of the second adiabatic space is lower than a lower limit value of a pre-set temperature range; measuring ambient temperature of the condenser; and controlling an operation of a condenser cooling fan according to the ambient temperature of the condenser to maintain the refrigerant that passes through the interior of the condenser at a certain temperature or higher.

Abstract: An integrated air conditioning system, in which an indoor air unit and an outdoor air unit are connected to each other with a wall therebetween, has an integrated configuration having both a configuration as an indirect outdoor air cooler (liquid-gas heat exchangers, piping and the like), and a configuration as a general air conditioner (an evaporator, an expansion valve, a compressor, a condenser and the like).

Abstract: A combined air-conditioning and hot-water supply system that, if a temperature that is set in a hot-water supply unit is higher than a temperature of refrigerant discharged from a compressor when the combined air-conditioning and hot-water supply system is in a heating operation cycle state, increases a target condensing temperature of an outdoor unit above the target condensing temperature that has been set, and controls an opening degree of an indoor expansion device to be less than the opening degree that has been set, such that a heating load of an indoor unit is maintained constant.

Abstract: An air conditioner for a vehicle includes: a compressor (21); an internal heat exchanger (22, 24) which exchanges heat between the refrigerant and air in an interior space; an external heat exchanger (23) which exchanges heat between the refrigerant and outside air; a battery (5): a battery heat exchanger (29) which exchanges heat between the refrigerant and the battery by causing the refrigerant, which travels to the compressor from the external heat exchanger, to go through the battery heat exchanger; a throttle adjusting part (30) which is arranged in a refrigerant flow passage on an upstream side of the battery heat exchanger; and a control unit (40). The control unit (40) controls the flow of the refrigerant through the throttle adjusting part based on an extra heat exchange capacity that is an extra capacity of the external heat exchanger with respect to the internal heat exchanger.

Abstract: An outdoor heat exchanger in cooling operation includes: a first header pipe into which a refrigerant compressed by a compressor flows; a first heat exchanging unit connected with the first header pipe and allowing a refrigerant to exchange heat with the air; a bypass pipe through which the refrigerant exchanging heat in the first heat exchanging unit flows; a first distribution pipe connected with the bypass pipe; a distribution pipe check valve that is disposed in the first distribution pipe and preventing the refrigerant exchanging heat in the first heat exchanging unit from passing through the first distribution pipe; a second header pipe into which the refrigerant passing through the bypass pipe flows; a second heat exchanging unit connected with the second header pipe and allowing a refrigerant to exchange heat with the air; and a second distribution pipe through which the refrigerant exchanging heat in the second heat exchanging unit passes.

Abstract: Disclosed is a hot water heater supplement and means of utilizing waste heat from a refrigeration cycle. The apparatus comprises a refrigerator having a compressible refrigerant, a compressor, a condenser, a refrigerant receiver tank, an expansion valve and an evaporator for changing the temperature, pressure and phase of the refrigerant in a standard refrigeration cycle. The condenser is a coaxial, water cooled heat exchanger that receives waste heat from the high temperature, condensing refrigerant. The heated water is pumped into a coaxial heat exchanger within a heat exchange tank, which heats a volume of water within the exchange tank that is then mixed with a hot water heater tank for use in a residence. Cold water is fed into the exchange tank and thus pre-heated before being moved to the hot water heater, which utilizes either a gas or resistance style heating means.

Abstract: A refrigeration circuit includes a compressor, an outdoor heat exchanger, an expansion valve, an indoor heat exchanger, and a refrigerant storage tank provided between the outdoor heat exchanger and the expansion value. Refrigerant sequentially flows through the compressor, the outdoor heat exchanger, the expansion valve and the indoor heat exchanger during an air-cooling operation. Refrigerant sequentially flows through the compressor, the indoor heat exchanger, the expansion valve, and the outdoor heat exchanger during an air-warming operation. Preferably the indoor heat exchanger is a cross-fin heat exchanger, and the outdoor heat exchanger is a stacked heat exchanger. Preferably, a capacity of the outdoor heat exchanger is no more than 100% of a capacity of the indoor heat exchanger.

Abstract: An air-conditioning system for a vehicle, comprising a refrigerant circuit through which a refrigerant can flow and which is configured as a heat pump circuit and as a cooling system circuit, and associated with these, a compressor, at least one external heat exchanger, at least one internal heat exchanger that is associated with an internal heating condenser, whereby a device is provided for generating an air stream that can be thermally coupled to the internal heat exchanger and to the internal heating condenser, as well as a metering device that can meter the flow of at least a partial stream of the thermally coupled air stream through the internal heating condenser is provided, wherein in the heat pump mode of operation, the refrigerant can be or is conveyed from the high-pressure side of the compressor into the internal heating condenser, can be or is conveyed from the internal heating condenser via a first expansion valve to the internal heat exchanger, can be or is conveyed from the internal heat ex

Abstract: A combined air-conditioning and hot water supply system simultaneously executes the cooling operation of a use unit and the hot water supply operation of a hot water supply unit, wherein the combined air-conditioning and hot water supply system operates in a cooling priority mode when the temperature differential ?Twm between a set hot water supply temperature Twset and the inlet water temperature Twi of a plate water-heat exchanger is smaller than a priority operation determination threshold M that is set in advance, and operates in a hot water supply priority mode when the temperature differential ?Twm becomes equal to or higher than the priority operation determination threshold M. This simultaneous execution of cooling and hot water supply operations prevents hot water from running out.

Abstract: A ground source heat pump device and system includes a supply line for removing groundwater from an underground water source, a return line for returning the groundwater to the underground water source, and a heat pump that is able to utilize the supplied groundwater as a medium for transferring thermal energy between the groundwater and a refrigerant. In one embodiment, the heat pump can further include a circulation pump for circulating the groundwater through the system, and a vacuum unit for removing air from the system and filling the supply line, return line, heat exchanger and circulation pump with the groundwater.

Abstract: A method for increasing efficiency of a transcritical heat pump water heater system is provided, as well as the corresponding system. The refrigerant, such as CO2, is compressed to a supercritical point and passed through a gas cooler that is wrapped at least partially around a water storage tank, wherein the refrigerant transfers heat to water stored in the tank. The hot water is discharged from the storage tank proximate to a top of the tank, and cold water is introduced into the tank proximate to a bottom of the tank. The supercritical refrigerant is directed to flow through the gas cooler from a top point to a lowermost point in a flow direction such that the refrigerant exits the gas cooler proximate to the bottom of the tank at a location of the coldest water within the storage tank.

Abstract: Provided is a heat integrated distillation apparatus includes: rectifying column including a trayed section or a packed bed section; stripping column including a trayed section or a packed bed section located higher than rectifying column; first pipe for connecting top part of the stripping column with bottom part of the rectifying column; and compressor that compresses vapor from top part of the stripping column to feed the compressed vapor to bottom part of the rectifying column. The heat integrated distillation apparatus further includes: heat exchanger located either at the trayed section or a packed bed section of rectifying column or at the trayed section or a packed bed section of stripping column; second pipe; and third pipe for circulating fluids through the heat exchanger.

Abstract: A method for producing heating in a high temperature heat pump is provided comprising condensing a vapor working fluid comprising HFC-245eb and optionally Z—HFO-1336mzz, in a condenser, thereby producing a liquid working fluid. Also a method of raising the maximum feasible condenser operating temperature in a high temperature heat pump apparatus is provided. The method comprises charging the high temperature heat pump with a working fluid comprising HFC-245eb and optionally Z—HFO-1336mzz. Also a high temperature heat pump apparatus is provided containing a working fluid comprising HFC-245eb and optionally Z—HFO-1336mzz. Also a composition is provided comprising: (i) a working fluid consisting essentially of HFC-245eb and optionally Z—HFO-1336mzz; and (ii) a stabilizer to prevent degradation at temperatures of 55° C. or above, (iii) a lubricant suitable for use at 55° C. or above, or both (ii) and (iii).

Abstract: An air conditioner capable of cooling or heating an electronic component box provided to an outdoor unit is provided. An air conditioner includes a compressor, an outdoor heat exchanger, an indoor heat exchanger, an electronic component box and an electronic component box heat exchanger. The compressor compresses a refrigerant. The outdoor heat exchanger performs a heat exchange between outdoor air and the refrigerant, being disposed outdoors and connected to the compressor. The indoor heat exchanger performs a heat exchange between indoor air and the refrigerant, being disposed indoors and connected to the compressor and the outdoor heat exchanger. The electronic component box has electronic components accommodated therein, being disposed outdoors together with the outdoor heat exchanger. The electronic component box heat exchanger heat or cools the electronic component box through flow of the refrigerant, being provided in the electronic component box.

Abstract: There is disclosed an air conditioner including a compressor to compress refrigerant, an indoor heat exchanger to cool or heat a room, using the refrigerant, an outdoor heat exchanger to heat-exchange the refrigerant with outdoor air, the outdoor heat exchanger comprising a front heat exchange member and a rear heat exchange member, and a defrosting module to adjust an opening degree of a passage of the refrigerant drawn into the front heat exchange member and the rear heat exchange member, wherein the defrosting module includes a first expansion valve to adjust an opening of a passage of the refrigerant introduced into the front heat exchange member and a defrosting unit to adjust an opening degree of a passage of the refrigerant between the front heat exchange member and the rear heat exchange member.

Abstract: A system for utilizing waste heat from a vehicle has a Rankine circuit, and the Rankine circuit includes a fluid machine. A generating unit of the fluid machine has a third rotating body that is disposed coaxially with a first rotating body of a pump unit and a second rotating body of an expansion unit. The fluid machine has a drive shaft that is integrally connected at least to the first rotating body, among the first, second and third rotating bodies, and a power transmission unit that is connected to the drive shaft and transmits external power to the drive shaft.

Abstract: An apparatus is configured to receive an incoming air stream from within an enclosure and to exhaust an outgoing air stream into the enclosure, the incoming and outgoing air streams flowing in a flow direction. The apparatus comprises an evaporator, a compressor, a condenser, and a heat exchanger. The heat exchanger has a heat extraction portion and a heat depositing portion, wherein the heat extraction portion is disposed in an air stream outside of the enclosure and wherein the heat depositing portion is disposed downstream of the evaporator with respect to the flow direction. A method includes receiving an incoming air stream from within an enclosure in a dryer apparatus, the apparatus including an evaporator, a compressor, and a condenser. A heat exchanger is operably connected to the dryer apparatus to transfer sensible heat from an air stream outside of the enclosure to a location downstream of the evaporator.

Abstract: A system for simultaneously heating and cooling a first portion and a second portion of a space utilizes a plurality of boilers, chillers, heat exchangers, condenser pumps and closed loop pumps by using a plurality of sensors indicating the temperatures inside and outside the space and a controlling module controlling the operation of the system. The present disclosure can be easily achieved by making minor configurational modifications to existing systems, thereby increasing system versatility.

Abstract: A refrigerating and air-conditioning apparatus is provided, with which a cold-storage/refrigeration load and air-conditioning loads such as a cooling load and a heating load can be simultaneously processed and a stable heat source can be supplied throughout the year. In the refrigerating and air-conditioning apparatus, heating energy or cooling energy stored in the primary-side refrigerant is usable as an air-conditioning load through the indoor heat exchanger while cooling energy stored in the primary-side refrigerant is transferred to the secondary-side refrigerant circulated in the cold-storage/refrigeration refrigeration cycle through the first refrigerant-refrigerant heat exchanger so as to be usable as a cold-storage/refrigeration load.

Abstract: A heating/air-conditioning installation (IC) comprises a compressor (CP) capable of heating and pressurizing a refrigerant, an internal condenser (CDI) capable, in heating mode, of contributing towards the heating of an air known as interior air by exchange with the refrigerant coming from the compressor (CP), an external pressure reducer (DTE) capable, in heating mode, of cooling the refrigerant, and an external evaporator (EE) capable, in heating mode, of heating up the refrigerant coming from the external pressure reducer (DTE) by exchange of heat with an air known as exterior air to feed into the compressor (CP).

Abstract: Systems and methods for low voltage detection for a heat pump water heater are disclosed. A current sensor can be used to monitor current supplied to a inductive load, such as a compressor or evaporator fan, of the heat pump water heater. The current sensor can be coupled to a controller which receives and processes information from the current sensor to determine whether a low voltage condition of the heat pump water heater has occurred. An alert can be provided to an installer/user of the heat pump water heater that a low voltage condition has occurred. The controller can also disconnect the heat pump water heater from the power source to prevent damage to the heat pump water heater.

Abstract: A modular vehicle air-conditioning unit for heating and cooling air includes a housing having at least one blower and a plurality of flaps for setting air flow paths and a refrigerant circuit in fluid communication with the housing. The refrigerant circuit includes a condenser, an evaporator, a compressor, and an expansion device. An evaporator air flow path through the evaporator and a condenser air flow path through the condenser are formed in the housing. At least one of the evaporator air flow path and the condenser air flow path receives air from at least one of an environment, a passenger compartment of a vehicle, and any mixture of thereof.

Abstract: A refrigeration cycle apparatus includes a compressor, a condenser, a pressure-reducing mechanism, an evaporator, an orifice provided in a refrigerant flow path from the compressor to the pressure-reducing mechanism, a differential pressure sensor that detects the differential pressure before and after the orifice, a refrigerant flowrate calculating portion that calculates a refrigerant flowrate based on the differential pressure, and a torque estimating portion that estimates the torque required to drive the compressor based on the refrigerant flowrate calculated by the refrigerant flowrate calculating portion, the intake pressure of the compressor, and the discharge pressure of the compressor.

Abstract: A fuel cell is provided to furnish electrical power to an HVAC&R system, and the waste heat from the fuel cell is transferred to a secondary fluid directed to flow to the climate-controlled space of a building during periods of time in which heating is required. The heat rejected by the fuel cell may be a supplemental or primary source of heat as well used for precise temperature control within the climate-controlled space of the building. A channeling assembly is used to selectively direct the fuel cell heat either to and/or away from the climate-controlled space served by the HVAC&R system. Higher energy efficiencies of the HVAC&R equipment are achieved, and the “cold blow” phenomenon is reduced or eliminated.