Abstract: A waste heat recovery system is provided. The system comprises: an appliance, a tank, a pump and a pipeline switch. The appliance comprises: a housing, a refrigeration module, a heat exchanger, and a circulating water pipe. The tank is for storing heat energy generated from the refrigeration module with water therein and/or pumping water having the saved heat energy to the circulating water pipe to heat a space provided in the appliance. The pipeline switch controls water flow between the tank, the heat exchanger and the circulating water pipe. The system allows the appliance therein to refrigerate, thaw, and/or cook food, and it reduces electric energy consumption.

Abstract: Provided are a method and apparatus for controlling the operation of a compressor of an HVAC system in response to the refrigerant super heat value for refrigerant within the compressor. First and second signals are received for indicating one or more temperature values of refrigerant substantially at the first compressor sump and within the first distributor tube, respectively. A saturated suction temperature is estimated using at least the second signal. A first super heat value is calculated for refrigerant substantially at the first compressor sump using at least the saturated suction temperature and the one or more temperature values indicated by the first signal. A first control signal is generated for at least de-energizing the first compressor if the calculated first super heat value is below a tolerance value defining the minimum super heat value at which the first compressor may be operated.

Abstract: An adjustment and temperature limit assembly for a mixing cartridge includes a first piece and a second piece selectively moveable relative to the first piece. The first piece is configured to be attached to a mixing cartridge housing and includes an abutment defining a maximum temperature limit for water exiting the mixing cartridge. The second piece is configured for attachment to a rotating stem extending outwardly of the housing. The second piece is selectively movable relative to the first piece between a plurality of temperature limits that are less than or equal to the maximum temperature limit. A fixing element is configured to be selectively attached to at least one of the first and second pieces to fix an operating temperature at one of the plurality of temperature limits or to set a reduced maximum temperature limit that is less than the maximum temperature limit.

Abstract: A controller that controls an electric compressor, which is mounted to a vehicle and configures a two-stage compression refrigeration cycle device, has a deceleration section, an operation stop section, and a restart section. The deceleration section reduces a rotational speed of an electric motor by controlling an AC current which is output to the electric motor, when a two-stage compression mode, in which an intermediate-pressure refrigerant flows into the electric compressor from an intermediate-pressure port, is performed and an operation stop request to stop the electric compressor is made. The operation stop section stops the electric motor after the deceleration section reduces the rotational speed of the electric motor. The restart section restarts the electric compressor when the operation stop request is canceled after the operation stop section stops the electric compressor.

Abstract: A vehicle air conditioner includes a bypass passage configured to cause a coolant to circulate while bypassing a heater core, a switching device set to switch between a first mode in which the coolant flows through the bypass passage and returns to an internal combustion engine while bypassing the heater core and a second mode in which the coolant flows to the heater core, a coolant-temperature sensor that detects a temperature of the coolant at a part through which the coolant flows in both the first mode and the second mode, and a control unit that controls an operation of a blower based on the coolant-temperature control data. Furthermore, first and second calculating portions are configured to calculate the coolant-temperature control data in the first and second modes, respectively.

Abstract: An air-conditioning apparatus is capable of performing a heating-defrosting operation where a specific one of a plurality of parallel heat exchangers is a heat exchanger to be defrosted and serves as a condenser while at least one parallel heat exchanger other than the heat exchanger to be defrosted serves as an evaporator. The air-conditioning apparatus includes a liquid refrigerant transporting unit for transferring liquid refrigerant from an accumulator to the heat exchanger to be defrosted. To perform the heating-defrosting operation, the air-conditioning apparatus supplies, to the heat exchanger to be defrosted, the liquid refrigerant transferred by the liquid refrigerant transporting unit.

Abstract: A modular computing system for a data center includes one or more data center modules including rack-mounted computer systems. An electrical module is coupled to the data center modules and provides electrical power to computer systems in the data center modules. One or more air handling modules are coupled to the data center modules. The data center module may include two pre-fabricated portions, each portion including a row of racks of computer systems. The two computing module portions of the data center module may combine to form a computing space when coupled to one another.

Abstract: An ice maker for forming ice having a refrigeration system, a water system, and a control system. The refrigeration system includes a compressor, a condenser, and an evaporator. The water system includes a water filter and a sump to hold water to be made into ice. The control system includes a controller adapted to determine a baseline freeze time, a baseline harvest time, and/or a baseline fill time after an initial set of ice making cycles and is further adapted to compare subsequent harvest times, freeze times, and/or fill times to the baseline freeze, harvest, and/or fill times to determine whether the ice maker needs maintenance. If controller determines that ice maker needs maintenance, controller can push a notification to a portable electronic device connected to the ice maker.

Abstract: A refrigeration cycle device includes a compressor, an air-refrigerant heat exchanger that exchanges heat between air and refrigerant, an expansion valve decompressing the refrigerant, a heat medium-refrigerant heat exchanger that exchanges heat between a heat medium and the refrigerant, a cold-heat utilization device that utilizes cold heat of the heat medium, and a hot-heat utilization device that utilizes hot heat of the heat medium. A refrigerant flow switching valve is provided to switch between a heat-medium cooling mode of cooling the heat medium in the heat medium-refrigerant heat exchanger, and a heat-medium heating mode of heating the heat medium in the heat medium-refrigerant heat exchanger.

Abstract: A centrifugal heat pump system includes a steam system with a steam supply, a steam turbine and a steam condenser connected in a steam loop; and a refrigerant system including a first compressor and a second compressor, a refrigerant condenser, and an evaporator connected in a refrigerant loop. The steam turbine includes a rotary drive shaft disposed axially and extending from a first end and a second end of the steam turbine. A sump system collects and redistributes oil or other lubricating fluid. The first compressor is coupled by a first coupling device to the first end of the steam turbine drive shaft and the second compressor is coupled by a second coupling device to the second end of the steam turbine drive shaft. The first and second compressors are connected in parallel in the refrigerant loop and controlled to share a cooling load equally.

Abstract: Provided are a method and apparatus for verifying or correcting the temperature sensor and compressor pairings within the HVAC system control logic, indicating that a sensor is logically paired with the specific compressor, from amongst a tandem compressor group, to which the sensor is coupled.

Abstract: The connection device comprises two thermal expansion valves releasably connected directly to each other, each valve being configured to be mounted to an end of a respective section of a fluid circuit and being shiftable between an open position and a closed position, in which it allows and prevents fluid flow through the device, respectively, depending on the fluid temperature.

Abstract: A freezer compartment having a flexible size is provided. In a refrigerator, a storage compartment includes an insulated shelf to separate a freezer compartment from a refrigerator compartment. The insulated shelf is movable to alter the size of the freezer compartment. In some cases, the freezer compartment is accessed by an internal door having a main door and a secondary door that can open separately to provide selective access to portions of the storage compartment. In other cases, the freezer compartment is accessed by an internal door that swings up about a horizontally-directed hinge axis.

Abstract: A valve is provided and includes a bypass block defining a bypass flowpath fluidly communicable with main flowpaths, a member disposable within the bypass block to occupy and move between first and second positions, the member being configured to permit fluid flow through the bypass flowpath when occupying the first position and to block a portion of the bypass flowpath to thereby prevent fluid flow through the bypass flowpath when occupying the second position and an elastic element. The elastic element is coupled to the member and configured to bias the member in a biasing direction toward the second position responsive to a temperature of fluid flowing along the main flowpaths.

Abstract: A cartridge has first and second separate base portions axially vertically adjacent in a stationary manner relative to one another. The first and second base portions have first and second opposing axial surfaces, such that the second surface of the first base portion and the first surface of the second base portion are applied axially against one another and include respective portions in axial contact with one another, which form a sealed joining interface between the first and second base portions. The cartridge also has a thermostat, as well as a slide valve connected to the body of the thermostat for controlling the temperature of the mixture of fluids, which moves along the axis of the base inside the first base portion to vary inversely the respective flow sections of a first passage for the first fluid and of a second passage for the second fluid.

Abstract: An air conditioning and heat pump tower includes a main casing, a plurality of connecting pipes, a compressor, a front heat exchanger, a rear heat exchanger, a fan unit, and an energy efficient arrangement. The energy efficient arrangement includes a first pre-heating heat exchanger supported in a front compartment of the main casing, and positioned between an outdoor air intake opening and an outdoor heat exchanging portion of the front heat exchanger. The air conditioning and heat pump tower may be operated between an air conditioning mode for absorbing heat from the indoor space, and a heat pump mode for producing heat to the indoor space. A predetermined amount of ambient air may be drawn through the outdoor air intake opening and may be pre-heated by the energy efficient arrangement before delivering to the indoor space.

Abstract: A multi-compartment transport refrigeration system includes a heat rejecting heat exchanger downstream of a compressor discharge port; a first evaporator expansion device downstream of the heat rejecting heat exchanger; a first evaporator having an first evaporator inlet coupled to the first evaporator expansion device and a first evaporator outlet coupled to the compressor inlet path, the first evaporator for cooling a first compartment; a second evaporator expansion device downstream of the heat rejecting heat exchanger; a second evaporator having a second evaporator inlet coupled to the second evaporator expansion device and a second evaporator outlet coupled to the compressor inlet path, the second evaporator for cooling a second compartment; and a first evaporator outlet isolation valve positioned in an outlet of the first evaporator, the first evaporator outlet isolation valve to prevent migration of refrigerant from the second evaporator outlet to the first evaporator outlet.

Abstract: A dehumidifier includes a body having an inlet for suctioning air and an outlet for discharging air; a compressor, disposed at the body, for compressing a refrigerant; a condenser for condensing the refrigerant compressed from the compressor; an expander for expanding the refrigerant condensed from the condenser; an evaporator, disposed at upstream of the condenser according to the flow direction of air, for evaporating the refrigerant expanded from the expander; a condensate water tank to store condensate water condensed from the evaporator; and a condensate water pipe, connected to the condensate water tank, for flowing the condensate water to be heat-exchanged with the refrigerant compressed from the compressor.

Abstract: A davit system has a davit arm and a davit mount. The davit mount includes a mount body, a clamping mechanism for clamping the corner flange of the air conditioning unit, and an arm mounting element for pivotally mounting the davit arm on the davit mount. When the mount body is mounted on the corner flange of the air conditioning unit, the davit arm extends laterally over the head of the air conditioning unit, and pivots away from the air conditioning unit for removing the head during servicing.

Abstract: An electric re-heat dehumidification apparatus to dehumidify a conditioned space is provided and includes a conditioning unit to produce an output airstream including overcooled air to be provided to the conditioned space to overcool the conditioned space during the dehumidifying of the conditioned space, a resistive element disposed within an output airstream of the conditioning unit, which, when activated, heats the overcooled air of the output airstream and a controller, operably coupled to the resistive element, to activate the resistive element in accordance with information of the conditioning unit, the resistive element and a temperature of the conditioned space to limit the overcooling of the conditioned space.