A method of operating a cooling system that has at least one evaporator containing a refrigerant and at least one adsorbent chamber containing adsorbent configured to provide adsorption of vaporized refrigerant from the at least one evaporator in a cooling mode and provide desorption of the refrigerant to the at least one evaporator in a recharging mode, the method including; controlling the adsorption and desorption of the refrigerant of the at least one adsorbent chamber between the cooling modes and recharging modes during a cooling cycle; ceasing desorption of the refrigerant from the at least one adsorbent chamber; allowing adsorption of the vaporized refrigerant from the at least one evaporator; and maintaining the at least one adsorbent chamber in an adsorbed state at the end of the cooling cycle in a storage mode.

An air handling system is provided and includes a coil in fluid communication with a water supply piping system and a water return piping system, a water supply piping system for returning the water from the coil to the water supply piping system, a circulating pump, and a control valve disposed in the water return piping system. The control valve controller can cause the control valve to open to a first predetermined position that is less than a fully opened position and modulate in response to a first temperature sensor sensing a temperature below a value such that the pressure drop in the coil and flow to the coil increases at sufficient values to protect against freezing of the water in the coil while also staying within a sufficient range to maintain authority of the control valve when the air handling system is either operating or not operating.

An air handling system is provided and includes a coil in fluid communication with a water supply piping system and a water return piping system, a water supply piping system for returning the water from the coil to the water supply piping system, a circulating pump, and a control valve disposed in the water return piping system. The control valve controller can cause the control valve to open to a first predetermined position that is less than a fully opened position and modulate in response to a first temperature sensor sensing a temperature below a value such that the pressure drop in the coil and flow to the coil increases at sufficient values to protect against freezing of the water in the coil while also staying within a sufficient range to maintain authority of the control valve when the air handling system is either operating or not operating.

A processing apparatus includes a first temperature measuring unit configured to measure a surface temperature of a first member exposed in a first closed space, a supply line configured to supply a low-dew point gas into the first closed space and a control unit configured to control a flow rate of the low-dew point gas. The control unit performs a first process to a third process. In the first process, an absolute humidity of a gas within the first closed space at a position of a surface of the first member is specified for the flow rate of the low-dew point gas. In the second process, a saturated absolute humidity at the surface temperature of the first member is specified. In the third process, the flow rate of the low-dew point gas is controlled based on the absolute humidity of the gas and the saturated absolute humidity.

A refrigerant distributor includes a first refrigerant pipe, a plurality of second refrigerant pipes, a body, a first plate, and a second plate. The body is made of aluminum or aluminum alloy. The body is configured to distribute a refrigerant from the first refrigerant pipe into the second refrigerant pipes or merge the refrigerant flowing from each of the second refrigerant pipes into the first refrigerant pipe. The body has a first surface connected to the first refrigerant pipe and a second surface connected to the second refrigerant pipes. The first plate is joined to the first surface, and has an outer surface exposed to atmosphere and provided with a first sacrificial anode layer for the body. The second plate is joined to the second surface, and has an outer surface exposed to atmosphere and provided with a second sacrificial anode layer for the body.

A cooling system includes an evaporator coil and a compressor fluidly coupled to the evaporator coil. A circulation fan is arranged to direct air through the evaporator coil and through a discharge air duct into a conditioned space. At least one sensor is disposed in at least one of the discharge air duct, the conditioned space, and the evaporator coil. An HVAC controller is electrically coupled to the at least one sensor and electrically coupled to the compressor. The HVAC controller is configured to receive a measurement of an HVAC parameter from the at least one sensor, determine if the HVAC parameter indicates frost formation on the evaporator coil, and, responsive to a determination that the HV AC parameter indicates frost formation on the evaporator coil, raise a saturated suction temperature of the evaporator coil.

A refrigeration apparatus including an enclosure with an opening and condenser coils disposed within the enclosure, a cover plate dimensioned to fit over the opening, and with an air-cleaning blower apparatus placed over an orifice in the cover plate. The orifice in the cover plate is in communication with the interior of the enclosure holding the condenser coils, with the air-cleaning blower apparatus positioned in the incoming air stream to remove contaminants from the incoming air stream before the incoming air stream contacts the condenser coils. The cover plate may also have ports for introducing compressed air into the enclosure and for applying a vacuum to the enclosure, as well as an indicator for signaling the need for cleaning the condenser coils.

A refrigeration apparatus including an enclosure with an opening and condenser coils disposed within the enclosure, a cover plate dimensioned to fit over the opening, and with an air-cleaning blower apparatus placed over an orifice in the cover plate. The orifice in the cover plate is in communication with the interior of the enclosure holding the condenser coils, with the air-cleaning blower apparatus positioned in the incoming air stream to remove contaminants from the incoming air stream before the incoming air stream contacts the condenser coils. The cover plate may also have ports for introducing compressed air into the enclosure and for applying a vacuum to the enclosure, as well as an indicator for signaling the need for cleaning the condenser coils.

A thermoelectric assembly includes a thermoelectric module having a hot side and a cold side, where a heat sink is coupled with the hot side of the thermoelectric module and a cold sink is coupled with the cold side of the thermoelectric module. A gasket is disposed between the heat sink and the cold sink and extends around a portion of the thermoelectric module. A vapor barrier is attached to and covers an outer surface of the gasket to prevent water vapor from penetrating the outer surface of the gasket.

An apparatus includes a flash tank, a medium temperature low side heat exchanger, a low temperature low side heat exchanger, a first compressor, a second compressor, and an ejector. The flash tank stores a refrigerant. The medium temperature low side heat exchanger uses the refrigerant from the flash tank to cool a space proximate the medium temperature low side heat exchanger to a first temperature. The low temperature low side heat exchanger uses the refrigerant from the flash tank to cool a space proximate the low temperature low side heat exchanger to a second temperature that is lower than the first temperature. The first compressor compresses the refrigerant from the low temperature low side heat exchanger. The second compressor compresses the refrigerant from the medium temperature low side heat exchanger. The ejector directs a mixture of the refrigerant from the first compressor and the refrigerant from the second compressor to the low temperature low side heat exchanger during a defrost cycle. The mixture defrosts the low temperature low side heat exchanger. The flash tank receives the mixture.