Abstract: A dehumidification apparatus of the type using a deliquescent agent, with which the leakage of deliquesced liquid out of the apparatus is securely prevented is disclosed. In the dehumidification apparatus, an air inlet and an air outlet are formed in the upper plate of the container. At least one closing member which can close the air inlet and the air outlet is arranged above the air inlet and the air outlet.

Abstract: A food storage system mounted in a fresh food compartment of a refrigerator includes an enclosure defined by inner and outer housings, as well as a food receptacle slidably positioned in the inner housing. The inner and outer housings are spaced so as to define a zone therebetween within which air is forced to flow in order to cool the contents of the receptacle. A tunnel insert is positioned in a mullion zone defined between fresh food and freezer liners of the refrigerator, with the tunnel insert being formed with a through hole for directing the flow of cooling air into the food storage system, a channel for directing an exhaust flow of cooling air from the food storage system out of the fresh food compartment within the mullion zone and an enlarged opening defining a return air passage for the overall fresh food compartment. The tunnel insert, within the mullion zone, channels the exhaust air from the food storage system to the return air passage.

Abstract: Special air handling system for bivalent air-conditioning of a room or building with an airstream system (Primary Air System) that exhibits an Exhaust Airstream directed towards the environment of the room and a Supply Airstream directed into the room that consists of or composes of the return air from the room and/or the outside air and with a Convective and/or Radiation System (Secondary Air-Conditioning System) with a Convective and/or Radiation Unit and a Heat Exchanger Unit located inside the room or building to be air-conditioned, through which a carrier medium flows. The Heat Exchanger Unit or an Evaporator/Condenser System that is connected with the Heat Exchanger Unit via Pipes containing refrigerant is located inside the Exhaust Airstream of the Primary Air System.

Abstract: A redundant, dual circuit air conditioning apparatus is provided for communications enclosures which is wall mounted thereon. A conditioned air housing is provided having a blower chamber which contains two air circulation blowers thrusting air into the enclosure and having freely pivotal ducts which operate in mutual cooperation in response to pressure variations between the chamber and the enclosure. Internested evaporator coils of two discrete refrigeration circuits share common fin connections for efficiency and each includes a dual line input performing in conjunction with an expansion valve and a simple Y distribution fitting coupled to those lines which achieves requisite pressure drops at low cost.

Abstract: A thermoelectric cooler (TEC) with attached heat sinks centrally positioned at the discharge of a blower and in turn mounted in an enclosure to provide a supply of cooled air to the driver or passenger of a vehicle. A blower/motor assembly produces a steady flow of air, a fraction of which is directed over the hot side of the TEC where it removes heat with the aid of a high efficiency heat sink disposed within the air stream. This air is exhausted to the ambient, away from the person. The remaining fraction of air discharged from the blower is directed to the cold side of the TEC where it is cooled with the aid of a high efficiency heat sink. The cooled air exits the enclosure and is blown on the head and face of the person for the purpose of cooling and personal comfort. Power is provided by a jack that is to be inserted in a cigarette lighter socket.

Abstract: A dual channel motor vehicle ventilation apparatus provides independent air temperature control. The apparatus comprises a housing having at least one air inlet and a first and second air outlet. First and second fluid communication channels are provided within the housing and defined air passages extending between the at least one air inlet and the first and second air outlets. First and second blowers are associated with the first and second air outlets, respectively, and serve to suction air from the air inlet, through the first and second fluid communication channels, and expel the air through the respective air outlet. A heating coil is included within the housing and disposed to project at least partially into the first and second fluid communication channels. First and second flow valves are disposed within the first and second fluid communication channels and are independently operable to direct a portion of the air flowing through each fluid communication channel across the heating coil.

Abstract: A method and apparatus is provided for air conditioning two passenger decks in an aircraft, especially a high capacity aircraft. The engine tap air stream is provided for air conditioning the upper deck passenger cabin and the lower deck passenger cabin. The air stream is cooled in at least one air conditioning plant, mixed with recirculated air from the lower cabin in at least one premix chamber, and then mixed with recirculated air from the upper cabin in local mixing chambers. The finished air streams are directed to the upper deck and the lower deck passenger cabins. The upper deck exhaust air is essentially completely used as recirculation air being mixed with the conditioning air in the local mixing chambers. The lower deck exhaust air is partially used as recirculation air being mixed with the conditioning air in the premix chambers, and is partially exhausted overboard.

Abstract: A window air conditioner includes indoor and outdoor portions separated by a partition. Air intake ports are formed in front and rear panels of the indoor portion. An L-shaped evaporator extends across both intake ports. An indoor sirocco fan rotatable about a vertical axis draws air through the evaporator and directs the air toward an air discharge port formed in the front panel. A filter has two filter sections connected to a common connecting element so as to be insertable simultaneously across the air intake ports of the front and side panels. The outdoor portion includes air intake ports formed in both side panels and air discharge ports formed in a rear panel and one of the side panels. An L-shaped condenser extends across both discharge ports. An outdoor sirocco fan rotatable about a horizontal axis is arranged to direct air toward the condenser. Two propeller blades are rotatable coaxially with the outdoor sirocco fan adjacent opposite ends thereof for directing air toward the outdoor sirocco fan.

Abstract: A temperature control system for printing press cylinders. It contains at least one compressed-air line (18) having at least one blast-air opening (20) for blowing cold air against a cylinder (6) which is to be cooled. At least one recirculation circuit (30, 32, 34, 36, 28) which is separate from the cold air of the compressed-air line (28) and by which air which has been blown by the blast-air opening (20) onto the cylinder is drawn off by means of a blower (28) contained in the recirculation circuit and is blown parallel to the cold air again onto the cylinder (6). In this way, the temperature of the cold air (22) can be active, without prior change of temperature, on the cylinder (6). The cold air deflected by the cylinder is returned to the cylinder (6) for additional cooling.

Abstract: A two section damper assembly and method of use is disclosed for avoiding stratification of cooled air in an air conditioning system. The damper assembly is especially adapted for use in variable air volume air conditioning systems that include an economizer. During the economizer mode of operation, the building in which the air conditioning system is installed is cooled at least partially with outside air as opposed to cooling solely by mechanical means and the volume of air that is required may be relatively low. The variable two section damper assembly ensures that an adequate volume of cooling air is taken in and that there is adequate velocity of the outside air and return air to ensure mixing of the outside air with the return air in order to avoid the stratification of the supply air that can occur. The damper assembly is variable in the size of the opened area and in the direction that the individual vanes of the damper assembly are set.

Abstract: An air conditioner includes vertically spaced cooling and heating sections to which air is selectively supplied from a room by means of a blower. The blower is arranged vertically intermediate the cooling and heating sections. A deflector is movable between first and second positions for directing air from the blower toward either the cooling section or the heating section.

Abstract: The air circulation system includes a fan unit for discharging filtered ambient air below a predetermined temperature into a walk-in cooler through a damper and exhausting warm air out of the walk-in cooler through a damper by using a discharge fan with the supply fan and discharge fan being controlled by an accustat. The fans, inlet filter and damper are incorporated into a generally rectangular housing that can be easily installed in a wall of a walk-in cooler or other similar enclosure with the air supply being ducted if desired.

Abstract: An air conditioner mounted on a vertical wall and an method, with the air conditioner including air intake ports and air exhaust ports provided on each side of and air conditioner body which contains heat exchangers, fans and motors. The air is drawn in from the sides of the air conditioner where it is heat-exchanged and then discharged from sides thereof.

Abstract: A system for the economic and efficient ventilating, cooling and heating of an enclosed space, such as a room or rooms within a building, through controlled ventilation of room air between an upper hotter building portion and a lower cooler building portion with the portions constituting different temperature zones in the building. The system includes a reversible ceiling fan facility and motorized inlets in the lower building portion and motorized outlets in the upper building portion, the inlets and motorized outlets being formed in the building and communicating with the exterior thereof.

Abstract: An apparatus for treating air having a housing with a passageway extending therethrough for interconnecting a source of the air and a space to be conditioned; two air movers mounted in the housing for creating two reduced pressure zones internally of the chamber; a pivotally positionable damper mounted in the passageway for selectively directing air received from the source along predetermined paths of travel internally of the chamber; and a counter-flow heat exchanger and cooling pad mounted in predetermined positions in the path of travel extending to the space to be conditioned to absorb heat energy and evaporatively cool the air passing to the space to be conditioned.

Abstract: A method and apparatus are disclosed for simultaneously regulating the temperature of interior air, and ventilating the interior air with air from outside by means of passing said interior air through an interior heat exchanger, simultaneously passing outside air through an outside heat exchanger, extracting a portion of the inside air, and directing it to the outside air for venting outside, simultaneously extracting a portion of the outside air and venting it to the inside air, continuously passing a heat exchange medium into one of the heat exchangers, and transferring the heat exchange medium from one heat exchanger to the other heat exchanger, via an expansion device to procure transfer of heat from one heat exchanger to the other, and passing the heat exchange medium through flow controls, responsive to temperature of the inside air, to selectively direct flow of medium either to one of the heat exchangers or to the other. Also disclosed is a method of regulating temperature by means of the system.

Abstract: An air conditioning system and method wherein a central pumping system circulates a heat-exchange liquid, through heating and cooling paths of a refrigeration system to and from air-treating units, and to and from a fluid cooler which acts as a heat sink and also as a heat source. The air-treating units have fans or blowers positioned upstream of the air cooling coils so that the fan heat is discharged through the fluid cooler system during cooling load operation, and that heat is available in the air-treating units during heating-load operation. One embodiment includes a separate line for supplying neutral water to each air-treating unit. The neutral water is mixed with either the hot water or the cold water supplied to each treating unit for temperature control. Another embodiment has only hot and cold water with separate supply and return lines.

Abstract: The subject invention is an air cooled ice rink construction in which the means for cooling the slab of the ice rink is separated from the ground under the slab by a region accessible to air external to the ice rink enclosure. The means for cooling the slab of the ice rink may be a circulating flow of mechanically-cooled air or, if the air external to the ice rink enclosure is sufficiently cool, it may be a circulating flow of such external air. The ice rinks constructed according to the subject invention may be operated at significantly lower operating costs than conventional ice rinks.

Abstract: An apparatus for cooling an enclosure uses cold ambient air drawn into the enclosure by an intake blower through a filter and an intake valve. An exhaust blower simultaneously draws air from inside the enclosure through an exhaust valve and a filter before exhausting the air. The intake and exhaust blowers are switched on and the intake and exhaust valves are opened when the ambient air is cooler than the enclosure and the enclosure requires cooling to remain within an acceptable temperature range. Condensation on the valves is eliminated by making the valve bodies from an insulative material and by attaching insulation to the valves. Two element valves are disclosed which trap a pocket of air in the valve for insulating opposite ends of each valve from one another. A warm air blower inhibits condensation formation on the ambient air side of the valve when closed by warming the surface of the valve element. Intake and exhaust filters prevent foreign material from entering the enclosure.

Abstract: A temperature and humidity control system including a heat pump including a compressor, an evaporator and a condenser; vaporizable refrigerant contained in a closed circuit communicating with the compressor, evaporator and condenser, a regeneratable dessicant material, valve and conduit apparatus for selectably directing air into and communicating with the condenser, evaporator and dessicant material and including first apparatus operable in a cooling/dehumidifying mode for supplying air first to the evaporator and from the evaporator to the dessicant material, and from the dessicant material to a volume sought to be conditioned and second apparatus operable in a heating/humidifying mode for supplying air first to the condenser for heating of the air and from the condenser to the dessicant material for humidifying of the air to a volume sought to be conditioned.

Abstract: An ambient air assisted cooling system comprising: vapor-compression refrigeration means; air-cooled heat exchanger means; and means responsive to the temperature of the ambient air for advancing the matter to be cooled through said refrigeration means and/or said heat exchanger means. Said means for advancing said matter preferably comprises microprocessor means.

Abstract: In a heat exchanger of the kind used for the transfer of heat from exhaust air, e.g. from rooms, to fresh air to be led into rooms, or for the transfer of heat the opposite way, means (9) for the cooled exhaust air are arranged after the outlet (4) with a view to transferring heat from the exhaust air to a heat reservoir (12), i.e. a heat pump circuit (10, 11). The thermodynamic efficiency is dependent on the difference in temperature, of course, and by transferring heat from exhaust air to for instance a water tank for hot water, the temperature being in some places close to the flow temperature of tap water, it will be possible to make use of much more of the latent heat of the exhaust air.

Abstract: The invention pertains to apparatus for utilizing atmospheric air to cool enclosures, such as refrigerated coolers, computer rooms, and other spaces requiring temperature regulation of cool air. A panel mounted within the enclosure to be cooled includes an atmospheric air grill inlet communicating through an air duct with an air supply fan located within atmospheric air for forcing cool atmospheric air through the grill. The panel also includes an interior exhaust fan within the enclosure communicating with an air duct for exhausting enclosure air to atmosphere, and temperature sensing control means for both fans sense the temperature within the enclosure and that of the atmospheric air to simultaneously actuate the air supply and exhaust fans which are of substantially equal air flow capacity wherein the air pressure within the enclosure remains substantially constant while supplying cool atmospheric air thereto.

Abstract: The invention provides a novel cold source for a Rankine cycle system which employs the use of cold seasonal temperatures to form an ice bed and which allows insulation of said ice bed from warm seasonal temperatures, the cold source comprising a container having an insulated side wall and an insulated bottom; a ventilated top wall mounted above said side wall, said top wall permitting a flow of external air to said container; means associated with said top wall for controlling the flow of external air to said reservoir; an insulated cover mounted on said top wall, a grate extending across said reservoir above said bottom defining a space for containment of a body of water; and means associated with said reservoir for spraying water into said reservoir. The invention also provides a novel turbine, condenser and evaporator assembly, and a magnetically-actuated fluid pump which may also be used for Rankine Cycle Systems.

Abstract: A temperature control system which can be used for regulating the temperature within a building while at the same time providing ventilation by means of providing refrigeration apparatus having a heating and cooling section and passing incoming air over one of the sections and outgoing air over the other section whereby heat taken in by the refrigeration apparatus from one of the air flows is transferred to the other air flow with preheating and precooling of the air flows by guiding them against opposite faces of the wall of the building before passage over the sections of the refrigeration apparatus.

Abstract: Equipment for cooling a plurality of containers, each of said containers characterized by a refrigeration unit in association therewith, said equipment being responsive to the temperature of the environment where said units are located and comprising:duct means for collecting cooled air from said containers and returning it to said containers;blower means disposed in said duct means for recycling the collected air to said containers;auxiliary cooling means disposed in said duct means downstream from said blower means;temperature responsive means for sensing the temperature of the environment; andcircuit means coupled with said temperature responsive means for deactivating said refrigeration units in response to a predetermined temperature drop and activating said auxiliary cooling means and said blower means.

Abstract: A shielded vent port for equilization of the pressure on opposed faces of a wall comprises a frame for fitting into an opening in said wall, a conduit through said frame, a sloping plate in said conduit, said plate being sealed against the walls of said conduit and having a large aperture therethrough, and a riser lying against the upper face of said sloping plate, said riser preventing flow of air in a downward direction through said plate and being movable away from said plate to permit flow therethrough in an upward direction. To provide for flow of air through said wall in either direction, the frame may have two conduits therethrough with a sloping plate and a fitted riser in each, the planes of said plates sloping in opposed directions. The shield may be lifted away from the plate to permit flow of air therethrough by an excess of pressure below the plate or by a solenoid in response to an external signal.

Abstract: Apparatus for use with refrigerators, particularly of the walk-in cooler type, wherein, when available, low temperature atmospheric air is drawn into the cooler for cooling purposes, rather than utilizing the usual compressor type refrigeration system. The apparatus is mounted within the space to be cooled and utilizes temperature sensing means for automatic operation, and in an embodiment, employs an electric storage battery which would permit extended operation in the event of a power failure.

Abstract: Apparatus for utilizing ambient air to provide supplemental cooling of a refrigerated enclosure in combination with a mechanical refrigeration system. Initial pull down of the temperature in a refrigerated enclosure to an intermediate temperature level is accomplished by a mechanical refrigeration system, or by an ambient air system in combination therewith. Cooling of the enclosure to a predetermined, low temperature level is achieved by actuating fans in response to the sensing of an outdoor temperature at or below a predetermined temperature level to draw relatively cool ambient air into the enclosure.

Abstract: An apparatus to circulate and regulate the flow of cold air from the exterior of a building having a cold room to the cold room to supplement the refrigeration of the cold room provided by the usual refrigeration equipment. Duct work is provided to carry cool air from the exterior of the building to the cold room, and further duct work is provided to exhaust air from the cold room. One or more blowers operate in conjunction with the duct work to circulate the air through the duct work and through the cold room. The blowers are controlled by temperature controls such that the apparatus can operate only when the temperature outside is below a high temperature limit, and does operate when the temperature in the cold room approaches or exceeds an upper temperature boundary to introduce cold air into the room until a lower temperature boundary is reached.

Abstract: An improved refrigerator system which includes a modular duct unit with control means to provide for the use of the cooler, outside, ambient air to cool a refrigerated cooler to reduce the need to operate at full capacity the normal refrigeration compressor system for the cooler.

Abstract: An auxiliary method and apparatus therefor for cooling refrigerated enclosures equipped with a primary refrigerating system, includes an intake opening mounted in fluid communication with a source of cold air and a blower having its inlet connected in fluid communication with the intake opening to draw cold air from the source of cold air, such as cold outside ambient air. The blower is mounted within a heated enclosure to prevent the blower housing from collecting moisture therewithin. A discharge opening is provided in the walls surrounding the refrigerated enclosure and a conduit connects in fluid communication the outlet of the blower and the discharge opening for supplying the cold air to the interior of the refrigerated enclosure when the blower is activated.

Abstract: An air conditioning structure having a depending centrally located outlet opening and auxiliary air inlets disposed laterally with respect thereto in combination with an air handling mechanism coupled to the outlet and auxiliary air inlets thereof. The air handling mechanism is located within a special support frame for the air conditioning structure, with the frame being adapted to retain and protect insulative material adjacent the exterior surfaces of the air handler mechanism. The air handling mechanism includes a central supply duct for conducting air from the air conditioning structure to a point of use and has a pair of laterally disposed return air handler ducts for conducting and treating the air returned from the point of use to the air conditioning structure, and further includes an exhaust duct extending from the supply duct by which air from the point of use may optionally be exhausted to ambient.

Abstract: An HVAC system for a building of the type that has an interior zone and a perimeter zone includes an economizer type air conditioning unit for the interior zone and a multi-source heat pump for the perimeter zone. The interior zone economizer type air-conditioning unit has a waste heat recovery coil disposed at the exhaust air dampers and connected in a closed liquid circulating loop for recovering heat from the exhausted air. The multi-source heat pump functions as an air-to-air heat pump during a cooling mode of operation during which heat is withdrawn from the air to be conditioned by standard indoor evaporator coils, said heat being rejected to the outside air by a standard outdoor condenser coil. The heat pump operates as liquid-to-air heat pump during the heating mode of operation during which heat is extracted by a chiller from the closed liquid circulating loop and is discharged to the conditioned air through the indoor coils which act as condensers during the heating mode of operation.

Abstract: An air conditioning system comprising a heat exchanger using the conduction principle to impart a portion of the heating or cooling from the air exhausted from a building or facility to a make-up air supply and a heat pump which provides supplemental heating or cooling for the make-up air supply to bring it to the desired temperature for use in the building or facility.

Abstract: An air ventilating unit provided with a rotary heat exchanger assembly communicating between an incoming air passage and an outgoing air passage for heat recovery in air conditioning. The ventilating unit is adopted to enable direct deposition on the upper wall of an air conditioner. When the ventilating unit is mounted on the air conditioning unit, the outside air (fresh air) outlet formed in the front wall of the ventilating unit is positioned closely adjacent to the air outlet of the air conditioning unit. Room air inlets are formed on both side walls of the ventilating unit.

Abstract: An apparatus for simultaneously monitoring the temperature within a refrigerated enclosure and the temperature of the ambient air exteriorly of the enclosure which functions to shut down normal compressor operations and selectively activates one or more primary and auxiliary ambient air inlet supply units dependent upon the temperature of the ambient air when the ambient air temperature is below the temperature within the enclosure.

Abstract: A system, particularly useful in a variable volume air conditioning system, is provided to insure that a predetermined amount of fresh air is taken into a building by the air conditioning system and includes an air property sensor for sensing the air in the system and for regulating a damper means to maintain the minimum outdoor air at a predetermined value.

Abstract: An uninsulated container for use in insulated holds has an inlet opening at the base of the container for the introduction of cooled air, a plenum chamber for distributing the air from the opening to the interior of the container, and an outlet opening at the top of the container for the return of the air to the hold. A closure member is provided for the inlet opening for use when the container is removed from the hold and this closure member is mounted within the container. The plenum chamber is formed within a transverse frame member at the bottom of one end wall of the container while the outlet opening is in the top of the other end wall.