Abstract: A heat exchanger transfers heat between primary and secondary fluid coolants. A housing has a longitudinal central axis lying within a transverse housing plane. A bottom wall with a concave inner surface faces upward and extends along the central axis. A plurality of arcuately helical lower sector fins are spaced apart along the central axis on the bottom wall inner surface. A cover has a longitudinal central axis lying within a transverse cover plane. A top wall with a concave inner surface faces downward and extends along the central axis. A plurality of arcuately helical upper sector fins are spaced apart along the central axis on the top wall inner surface. A copper tube is assembled into the housing in a direction transverse to the housing axis with the tube closely adjacent the lower sector fins. First and second sealing means seal the tube ends to the housing. The cover is assembled into the housing in a direction transverse to the housing axis with the upper sector fins closely adjacent the tube.

Abstract: A cryogenic fluid storage/processing system which includes a tank for storing the cryogenic fluid, and a containment wall surrounding the tank and defining an impoundment area. The system further includes a vaporizer for regasification of the cryogenic fluid. Piping is discharges the vaporizer heating medium into the impoundment area, and/or routes it beneath the tank to heat the ground beneath the tank. Further, the system provides for all liquid hydrocarbons to be contained within the impoundment area with the pumps inside and the vaporizers mounted on the containment walls.

Abstract: There is a cooling system and method for its use that cools carcasses prior to their being placed into cold storage units, such as refrigeration units or freezers. The cooling system includes cooling units having a wall therein, to redirect airflow in a circular pathway from a first side of the wall to a second side of the wall. The cooling unit includes at least one cooling apparatus positioned proximate the first side of wall, for directing airflow of cooled air produced in the cooling apparatus, vertically downward in a direction toward the floor, and over the animal carcass. The wall is above the floor, such that this cooled air moves from the first side of the wall to the second side of the wall, and completes the circular pathway by returning to the area proximate to the cooling apparatus. An apparatus for creating condensation can be placed on the second side of the wall, such that condensation falls to the floor, and not into contact with the animal carcasses.

Abstract: A desiccant-assisted air conditioning system utilizes a compressor (10), a condenser coil (11), an evaporator coil (13), supplemental desiccant coils (19, 20) connected therewith, and damper (18A, 19B) and valve arrangements that direct air and refrigerant through the system coils in several different thermodynamic operating paths. The system combines, transfers and reverses thermodynamic energies between the desiccant, the refrigerant and the crossing air, and simultaneously maximizes the refrigerant vapor compression closed cycle and desiccant vapor compression open cycle. The desiccant coils (19, 20) not only provide an effective gas phase change in their crossing air streams, but also simultaneously provide endothermic and exothermic energy exchanges between the air streams and the passing refrigerant that maximize the operating efficiency of the compressor, condenser coil, and evaporator coil, conserves energy, and produces quality conditioned air output.

Abstract: A refrigeration system includes a compressor having a compressor housing and operable to compress a flow of refrigerant. A pump is operable to provide a flow of oil to the compressor. A portion of the oil mixes with the flow of refrigerant and the remainder of the oil flows into the compressor housing. A valve is movable between an open position and a closed position. When in the closed position, the valve is operable to inhibit the addition of oil above a predetermined level within the housing.

Abstract: A cooling system for cooling an ambient to be cooled, a cooler and a method of controlling a cooling control system are described. The cooling control system comprises a variable capacity compressor and a controller, the controller measuring the load of the compressor by means of the measurement of the electric current and verifying the temperature condition in the cooler ambient and actuating on the cooling capacity of the compressor, the compressor being controlled to actuate in cycles, the cooling capacity being altered in function of an evolution of the load of the compressor along the cooling cycles in combination with an evolution of the temperature condition in the cooled ambient.

Abstract: There is provided a heating medium circulating apparatus which is small and which does not require a very large installation space. In a heating medium circulating apparatus wherein a temperature controlling object being an object to be temperature-controlled, a main heat exchanger 88 for carrying out main heat exchange with a heating medium, and a circulating pump 84 are provided in a heating medium circulating system 78, a sub-heat exchanger 96 using a thermoelectric element 100 is provided in the heating medium circulating system downstream of the main heat exchanger to control the temperature of the heating medium. Thus, the apparatus itself is small, and the installation space is not very large.

Abstract: A refrigerator includes a main body having at least one refrigerating compartment; a door to open and close an opening of the refrigerating compartment; a water dispenser provided on the door to supply drinking water; a drawer provided inside the refrigerating compartment; and a filter assembly disposed behind the drawer to filtrate water supplied to the water dispenser. Thus, the refrigerator has more available space and the filter assembly can be exchanged by the user with ease. Further, the refrigerator has a better appearance inside the cooling compartment and the cost for the filter assembly is reduced.

Abstract: The present invention relates to a structure for separating oil from a refrigerant gas containing the oil. The refrigerant gas is discharged from a refrigerant compressor which forms a part of refrigerating cycle to an external refrigerant circuit. The oil separation structure includes a separation chamber in which the oil is separated from the discharge refrigerant gas having a cylindrical inner surface, and a plurality of introduction passages through which the discharge refrigerant gas is introduced into the separation chamber. The oil is separated by centrifugal action from the discharge refrigerant gas by turning the discharge refrigerant gas introduced into the separation chamber along the cylindrical inner surface.

Abstract: A vapor compression system includes a main vapor compression circuit having a compressor, a condenser, an expansion device and an evaporator serially connected by main refrigerant lines, the compressor having a suction port, a main discharge port and an intermediate port, and the main refrigerant lines being communicated with the main discharge port and the suction port; a bypass circuit communicated between the intermediate port and the suction portion; and a superheat sensing device positioned to sense superheat in a combined flow from the main vapor compression circuit and the bypass circuit. A method of operation of the system is also provided. The benefits of enhanced system and compressor performance, improved compressor reliability and extended system operating envelope are readily obtained.

Abstract: A cooling unit wherein devices are divided so as to be installed in each of an outdoor unit and indoor unit, for downsizing the indoor unit and reducing its pipe-line cost. The cooling unit disposes a compressor, a condenser and a liquid receiver R in the outdoor unit, and disposes an expansion means and an evaporator in the indoor unit. The outdoor unit comprises a first bypass pipe closed by a first bypass valve so as to open/close freely. The indoor unit comprises a second bypass pipe, which is closed by a second bypass valve so as to open/close freely. The units are connected by a liquid pipe used as a supply line for refrigerant or hot gas by selecting a refrigerant supply line among the bypass valves and the open/close valves, and by a gas pipe communicating the evaporator to the compressor.

Abstract: A Drain Trap Alarm for Heating Ventilation Air Conditioning condensate drain system includes a upstream port coupled to the cooling coil drain tray followed with a U-type trap and a downstream port coupled to the external atmosphere. The invention is provided with a liquid level sensor and continuously monitors the liquid level of drain trap. The signal from the liquid level sensor in communication with the microprocessor will notify operating personnel that the condensate drain is malfunctioning and activate the automatic prime valve to restore the dry drain trap condition to normal operation. The microprocessor provides operational test enabling the HVAC operating personnel to quickly test Drain Trap Alarm.

Abstract: The invention provides an improved drain valve for dew condensation in an air chiller unit mounted on an aircraft. The drain valve 160 attached to a drain of a drain pan in an air chiller unit is equipped with a valve seat member 162 having an opening 162a at the center and a valve member 164 disposed to contact the lower surface of the valve seat member 162. The valve member 164 is made of thin silicon rubber, and arms 164b created by slits formed thereto support a valve means 164e with extremely small spring constant. While the air chiller unit is operating, the valve means 164e is air tightly attached to the opening 162a of the valve seat by negative pressure, closing the drain valve. When the operation stops and dew drops gather on the valve means 164e, the valve means 164e is displaced by the weight and the valve is opened. When there are no dew drops, the valve is closed to prevent moisture from entering.

Abstract: The invention is directed to temperature control system in which a programmable controller may be programmed to control a thermal output of said temperature-modifying device having a power connector. The programmable temperature control system may include at least one power coupler for removeably engaging the power connector from the temperature-modifying device. The programmable controller may be electrically coupled to the at least one power coupler and programmed to control the operation of the at least one temperature modifying device in response to the comparison of a measured temperature with at least one set point temperature. The power coupler may comprise one or more electrical outlets on the programmable temperature control system, for example, that may be used to individually control heating and cooling devices. The power controller may also include an power coupler for removeably engaging a power supply, such as an electrical outlet.

Abstract: A driving method of an air conditioning system is disclosed. The air conditioning system includes a first cooling device combined with a heating function and having a compressor, an outdoor heat exchanger, an expansion device, a passage control device and an interior heat exchanger, a second cooling device provided at an outlet side of the blower and having a cooling pad containing moisture and ventilating, a tank storing refrigerant, a pump, a sprayer and a filter, a control unit electrically connecting to the first and second cooling devices and a humidity sensor and alternatively driving the first cooling device and the second cooling device according to humidity of outdoor air delivered from the humidity sensor during air conditioning mode.

Abstract: In a vehicle air conditioner, at least one of an inner surface temperature of a passenger compartment and a surface temperature of a passenger in each detection area is the passenger compartment is detected by an infrared rays sensor, and a control unit determines a solar radiation condition such as a solar radiation amount and a solar radiation direction in the passenger compartment based on the surface temperature detected by the infrared rays sensor. The control unit controls operation of an operation member such as an air mixing door, based on the determined solar radiation condition. Thus, uncomfortable feeling given to the passenger can be reduced regardless of the solar radiation condition.

Abstract: A container is disclosed which can include a container base having a cavity therein, a thermal source disposable in the cavity of the base, an insert being insertable within the cavity of the base such that the insert is in close proximity to the thermal source, and a cover. The cover and the insert can define a sealable compartment for the storage of food items. In other embodiments, the cover can be engageable directly with the base to define a storage compartment. The thermal source can act as either or both a heater and a cooler to help maintain the food items stored in the container at a desired temperature.

Abstract: In a refrigerating system, a condenser (1) includes a cooling core (2) having parallel tubes and cooling fins, two headers (3) connected to the ends of each tube and a cylindrical dryer tank (4) connected to one of the headers (3) by connectors (5). Each connector (5) has a cylindrical side surface, and cylindrical butting faces corresponding to the header and the dryer tank respective side surfaces. During preliminary assembling of the condenser, cylindrical projections of connectors (5) are pushed into corresponding orifices in the header (3) and the dryer tank (4) side surfaces, and the entire unit is placed in a furnace, where the one-shot brazing process is carried out.

Abstract: A cooler for a counter top has a bottom panel having lateral and transverse edge portions and a plurality of upright panels attached thereto and extending upward therefrom forming a vessel with an interior adapted to hold ice. The plurality of upright panels includes a front panel having a front surface and plurality of pockets extending from the front surface to the interior of the vessel. An access panel provides access to the interior for filling the cooler with ice. The ice cools each pocket to thereby chill a beverage container resting in the pocket.

Abstract: An automobile air conditioning system controls the high pressure of the refrigeration cycle in a wide range of airflows from a low airflow region during an intermediate period to a high airflow region. When a dehumidifying mode is selected, the target high pressure at which the cycle efficiency calculated from a gas cooler outlet refrigerant temperature is maximized is defined as a target value to a valve such as a heating variable throttle valve to control the high pressure of the refrigeration cycle to the target value. This permits control such that the cycle efficiency of the refrigeration cycle is maximized in a wide range of airflow from a low airflow region during an intermediate period to a high airflow region at a relatively low, about 10° C., outside air temperature.