Abstract: A defrost heat discharge system includes a drain duct configured to discharge heat from a defrost heater and to discharge condensed water that results from melting of frost on an evaporator by heat generated by the defrost heater, a drain pipe that connects a first space to a second space, that is configured to allow condensed water to flow from the first space to the second space, and that is configured to discharge heat generated by the defrost heater from the first space to the second space, a drain cap located at an end of the drain pipe and configured to open and close at least a portion of the drain pipe; and a condensing fan configured to receive heat from the defrost heater and discharge heat toward an outside of the second space based on the drain cap opening the portion of the drain pipe.

Abstract: A determination assistance device includes an infrared image acquirer that acquires an infrared image by imaging an area including an air outlet of an air conditioner, a communicator that communicates with the air conditioner, an inputter that accepts data inputs, imaging switch operations, and the like performed by user, a display that displays image data and the like, a controller that controls overall operations of the determination assistance, and a storage that stores various data, a program, and the like. A display controller of the controller displays on the display the infrared image and whether or not abnormality, determined by the infrared image, is present in the air conditioner.

Abstract: An indoor unit of an air-conditioning apparatus includes: a casing; a drain pan, which is provided inside the casing, and is configured to receive condensate water generated in the load-side heat exchanger; and a refrigerant detection unit provided below the drain pan inside the casing. The refrigerant detection unit includes: a sensor configured to detect leakage of the refrigerant; and a sensor cover configured to cover the sensor from a front surface side of the sensor. The sensor cover includes: a roof portion arranged above the sensor; and a side surface portion arranged on the front surface side or a side surface side of the sensor below the roof portion. The roof portion has an eaves portion projecting outward with respect to the side surface portion, and the side surface portion has at least one first opening port configured to introduce air to an inside of the sensor cover therethrough.

Abstract: The dual-cycle and dual-outlet air conditioner includes two separate condensation-evaporation cycles that operate independently with respect to one another, but are contained within the same housing. Each cycle includes its own evaporator and condenser, but with a common return air intake/evaporator blower and a common condenser/exhaust fan. Two separate streams of cooled air are produced by the two separate evaporators, which may then be transferred through two separate ducts to supply cooled air to different zones within a building. The two separate condensation-evaporation cycles may be independently controlled by separate thermostats in the different zones of the building.

Abstract: A vehicle includes a controller configured to determine when an HVAC system is providing at least one of heating, ventilating and air conditioning to a primary zone and to determine when a drivetrain is providing energy to a power source or the power source is providing surplus energy to the drivetrain, and in response, to activate a low cost energy mode wherein the HVAC system is operated to provide the at least one of heating, ventilating and air conditioning to at least one secondary zone.

Abstract: A refrigerated transportation cargo container includes a container and a refrigeration unit to provide a flow of refrigerated supply air for the container. The refrigeration unit has refrigerant flowing there through and includes a compressor and an engine (36) powered by a flow of fuel and driving the compressor. A regeneration heat exchanger (50) gasifies the fuel prior to the fuel entering the engine via a thermal energy exchange with the refrigerant flowing through the regeneration heat exchanger. A method of operating a refrigeration unit includes connecting an engine to a compressor and enabling a flow of refrigerant through the refrigeration unit. The refrigerant is directed through a regeneration heat exchanger as a flow of liquid fuel. The fuel is gasified at the regeneration heat exchanger via a thermal energy exchange with the refrigerant. The gasified fuel is directed to the engine to power the engine.

Abstract: An apparatus and a method are used for controlling an air conditioning system for automotive body painting to regulate temperature and humidity in a paint booth based on difference between enthalpy of outside air and enthalpy of supply air. The apparatus includes a first temperature sensor measuring temperature of outside air, a first humidity sensor measuring humidity of outside air, a second temperature sensor measuring temperature of supply air, a second humidity sensor measuring humidity of supply air, and a controller calculating first enthalpy based on the temperature and humidity of the outside air, calculating second enthalpy based on the temperature and humidity of the supply air, and controlling the air conditioning system to regulate the temperature and humidity of the supply air when difference between the first enthalpy and the second enthalpy is below or exceeds a reference enthalpy range.

Abstract: Provided is an air conditioner which can suppress refrigerant leakage in a room and has a high safety even when using a flammable refrigerant. The air conditioner includes an indoor apparatus placed in a room, and an outdoor apparatus placed in an outside of the room separated from the room by a wall. The indoor apparatus includes a first refrigerant pipe in which a flammable refrigerant flows. The outdoor apparatus includes a second refrigerant pipe which is connected to the first refrigerant pipe and in which the flammable refrigerant flows. The second refrigerant pipe has a portion smaller in thickness than a minimum-thickness portion of the first refrigerant pipe.

Abstract: Embodiments of an accumulator for charge management are described. A fluid compression system, comprising an accumulator fluidly connected to an evaporator via a spillover port. The spillover port directs working fluid received from the evaporator to be collected and stored in the accumulator, where the stored working fluid is stored and released from the accumulator in response to an operating condition of the evaporator.

Abstract: A liquefaction system is capable of sequentially or simultaneously liquefying multiple feed streams of hydrocarbons having different normal bubble points with minimal flash. The liquefying heat exchanger has separate circuits for handling multiple feed streams. The feed stream with the lowest normal boiling point is sub-cooled sufficiently to suppress most of the flash. Feed streams with relatively high normal boiling points are cooled to substantially the same temperature, then blended with bypass streams to maintain each product near its normal bubble point. The system can also liquefy one stream at a time by using a dedicated circuit or by allocating the same feed to multiple circuits.

Abstract: A controller of an indoor unit included in an air-conditioning system determines whether or not a communication error with the outdoor unit is an energization error that only occurs during an energization time in which electric power is fed from a commercial power supply to the outdoor unit. The controller can also determine whether or not the communication error is a connection establishment error that occurs at a time of establishing a connection with the outdoor unit. Based on determining the cause of the communication error with the outdoor unit, the controller can drive a fan by electric power fed from an emergency power supply.

Abstract: A determination assistance device includes an infrared image acquirer that acquires an infrared image by imaging an area including an air outlet of an air conditioner, a communicator that communicates with the air conditioner, an inputter that accepts data inputs, imaging switch operations, and the like performed by user, a display that displays image data and the like, a controller that controls overall operations of the determination assistance, and a storage that stores various data, a program, and the like. A display controller of the controller displays on the display the infrared image and whether or not abnormality, determined by the infrared image, is present in the air conditioner.

Abstract: A heat pump system can be reversed to either heat or cool a controlled space, such as environment in a building. In a typical use, such as heat pump system extracts heat or cold energy from the surrounding air around the building. A water-to-refrigerant heat exchanger is added to the refrigerant loop of the heat pump system along with a control system to operate water flow and a thermal energy exchange process. Addition of the water heat exchanger can add the heat or cold energy stored in a pool, or other external water reservoir, into the heat or cold exchanging process. Depending upon surrounding conditions, the automatic control system can switch in-between the energy sources, or use a combination of them, to improve efficiency the heat pump system.

Abstract: A heat pump includes a control device configured to control conduction and shutting-off of electric power to a first compressor heater, and to control whether or not an alarm unit notifies an alarm. The control device causes the alarm unit to notify the alarm when the control device determines that duration of electric conduction to the first compressor heater is a predetermined period or longer. With this, it is possible to provide a heat pump that can control electric conduction to the heater to enable saving of electricity, and that can detect a problem in the controlling of the electric conduction to the heater.

Abstract: A refrigeration cycle apparatus is provided with a compressor, a condenser, a pressure-reducing device, and an evaporator. The refrigeration cycle apparatus comprises a refrigeration cycle configured to circulate refrigerant; and a control unit configured to control the refrigeration cycle. The control unit causes the refrigeration cycle to operate when an operation condition is satisfied, the operation condition including elapse of a preset time after the control unit stops the refrigeration cycle. The control unit detects abnormality of the refrigeration cycle based on state data indicating a state of the refrigeration cycle after the control unit causes the refrigeration cycle to operate.

Abstract: A refrigerator contains a dispenser for ice and/or liquid. A dispenser housing covers an opening in an outer shell of the refrigerator. The dispenser housing delimits a dispenser recess that extends outward and upward over an upper edge of the opening and is assembled from at least one main part, which extends from a lower edge of the opening over a rear wall to a front edge of a ceiling of the dispenser housing, and a filling part, which extends from the front edge to an upper edge of the opening.

Abstract: A system includes a condensing unit, a valve, and a unit cooler. The condensing unit is configured to condense refrigerant. The valve is configured to control the flow of the refrigerant from the condensing unit to the unit cooler. The unit cooler is configured to operate in a refrigeration mode and a stir-cycle mode. The unit cooler is configured to operate at a first speed during the refrigeration mode and at a second speed for a first period of time and at a third speed for a second period of time during the stir-cycle mode. The second speed is slower than the first speed and the third speed is slower than the second speed. Electric power is supplied to the unit cooler throughout the refrigeration mode and the stir-cycle mode.

Abstract: A liquid air energy storage system comprises an air liquefier, a storage facility for storing the liquefied air, and a power recovery unit coupled to the storage facility. The air liquefier comprises an air input, an adsorption air purification unit for purifying the input air, and a cold box for liquefying the purified air. The power recovery unit comprises a pump for pressurising the liquefied air from the liquid air storage facility, an evaporator for transforming the high-pressure liquefied air into high-pressure gaseous air, an expansion turbine capable of being driven by the high-pressure gaseous air, a generator for generating electricity from the expansion turbine, and an exhaust for exhausting low-pressure gaseous air from the expansion turbine. The exhaust is coupled to the adsorption air purification unit such that at least a portion of the exhausted low-pressure gaseous air is usable to regenerate the adsorption air purification unit.

Abstract: A heat transfer system comprises a first fluid storage tank fluidly connectable to a first fluid circuit for heat exchange between the first fluid circuit and a first fluid in the fluid storage tank, a first heat exchanger positioned for heat exchange with the first fluid, and a second heat exchanger fluidly connected to the first heat exchanger via a refrigerant circuit for heat exchange with the first heat exchanger. The refrigerant circuit includes a refrigerant compressor module and an expansion valve for circulating a refrigerant therethrough for heat exchange between the first and second heat exchangers. A hydronic system is also described.

Abstract: Described herein are systems and processes to produce liquefied nitrogen (LIN) using liquefied natural gas (LNG) as the refrigerant. The LIN may be produced by indirect heat exchange of at least one nitrogen gas stream with at least two LNG streams within at least one heat exchanger where the LNG streams are at different pressures.