With vapor compression system

A system for controlling the air and radiant temperatures, ventilation, illumination and humidity within an enclosed building is described. The system comprises a double glazed window which is transmissive to light and heat energy mounted in the wall of the building. Means are provided for measuring...     

There is provided a heat pump system comprising two cascade coupled heat pumps. The hot side of the system may be connected in series with an oil-fired boiler in a radiator circuit of conventional water heating installation, wherein a hot water heater is coupled in parallel to the boiler. The low temperature...     

A device for recovering heat from dishwashing machines, especially dishwashing machines of the type in which dishes to be washed enter the dishwashing machine through an opening in one side and are removed from the dishwashing machine from an opening in the opposite side of the machine. The device has...     

An air-conditioner system including a movable unit which is deployed in the space to be heated or cooled by the system. The movable unit has a first heat exchanging apparatus, a second heat exchanging apparatus, a compressor, a fan operatively associated with said second heat exchanging apparatus, and...     

This invention relates to a hot water system which utilizes heat from the refrigerant of a refrigeration system to produce hot water. The utilized heat consists of the superheat of the refrigerant vapor, the heat of condensation or latent heat, and part of the sensible heat of the liquid refrigerant....     

A heating system for a building structure is provided in which a heat pump system and at least one solar energy system and one air convector system are used. The solar energy system collects heat during the periods when sun energy is available and the air convector system collects heat when available...     

A thermosiphonic boiler with two mutually communicating water containers, one above the other, said containers housing water volumes being thermically insulated from the surroundings of the boiler and from each other by heat insulation in the boiler walls and in an intermediate wall common to the containers...     

Improvements in a heating system which heats a fluid medium by a heat exchanger and delivers it to an indoor coil or coils for space heating. Refrigerant, such as fluorohydrocarbons for refrigerators, is utilized as the heating medium. The heat exchanger is supplied with heat from a heat source, such...     

A mechanically air conditioned shelter includes wind deflectors, as part of the outer walls of the shelter, and a series of blades moving about a generally vertical axis, the wind being funneled into working engagement with the blades. In a preferred embodiment, power from the blades is used to compress...     

A typical automatic hot water tank installation has a self-contained source of heat for the water and is provided with external hot water from a solar collector, air conditioning condenser, or other suitable source. An external hot water handling assembly replaces the conventional drain valve at the...     

The heating system comprises at least one vertical heating duct through which is passed an upward stream of vapor and a downflowing stream of condensate, heating units placed in each of the premises to be heated and each comprising a condenser connected to a heating duct by means of a vapor withdrawal...     

A heat pump system having a vaporizer in heat exchange relationship with a glycol/water circuit which comprises an earth heat absorber and an ambient air heat absorber in parallel.

A heat pump for simultaneous heating of hot water for consumption and water for heating radiators comprising besides the heat pump in itself a water reservoir heated by the condenser of the heat pump. The water reservoir is enclosed by a fluid holding cover which forms a part of the heating radiator...     

An assembly for dehumidifying air, such as in swimming pool enclosures, comprises a heat pump system including a compressor, an evaporator, a condenser and a thermostatic expansion valve. A brine liquid system forms a closed loop through which brine liquid is circulated, and the brine is maintained at...     

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...     

A heating system for a building having a conventional gas furnace which includes a combustion chamber for heating air passing from a cold-air return to a hot-air duct. The gas furnace includes an exhaust stack for exhausting hot gases from the combustion chamber externally of the building. The heating...     

An energy saving device that utilizes the rejected heat from an air conditioning unit for heating water or other suitable liquid in a conventional liquid heating storage tank. The primary heater control in the storage tank is turned off whenever the air conditioning compressor is operating by a pressure...     

An apparatus for the utilization of air and solar energy and for the recovery of heat, e.g. in a building, comprises a heat exchanger formed along a wall of the building structure which, on the one side, is heated by lost heat from the building and, on the other side, is heated by solar energy. Air is...     

An installation for cultivating plants on a soil, characterized in that it comprises at least one heat-exchanger, each of said exchangers being constituted by an elongated flat flexible hose with a then wall resting on the soil, and feed means for circulating liquid of a preselected regulated temperature...     

A heat exchanger comprising a refrigerant tube in coil form leading from the output side of a compressor and a water tube in coil form tapped from a source of water to be heated, the tubes being coiled together so that each coil of the water tube is interposed between a coil of said refrigerant tube,...     

The heating system comprises at least one vertical heating duct through which is passed an upward stream of vapor and a downflowing stream of condensate, heating units placed in each of the premises to be heated and each comprising a condenser connected to a heating duct by means of a vapor withdrawal...     

An energy recovery system for industrial plants or similar installations providing for recovery and utilization of heat from relatively low temperature waste heat sources. The system includes refrigeration units operated as heat pumps to absorb the recovered heat from each of the sources in the evaporator...     

A water heater, converted from existing water heaters or in newly designed and manufactured water heaters, having a condenser tube of a refrigeration unit in thermal conductive contact but not intimate contact with the water to be heated, and having a sheath tube in conjunction with and outwardly disposed...     

An air heating and cooling system for a building includes an expansion-type refrigeration circuit and a heat engine. The refrigeration circuit includes two heat exchangers, one of which is communicated with a source of indoor air from the building and the other of which is communicated with a source...     

A timber drying plant has a drying chamber through which air may be circulated by a fan in a circuit which includes a refrigerating unit. The refrigerant fluid circuit of the unit includes a dehumidification evaporator for outlet air and a condenser in the recycle air flow for returning to the latter...     

A heating system for a building having a conventional gas furnace which includes a combustion chamber for heating air passing from a cold-air return to a hot-air duct is disclosed. The gas furnace includes an exhaust stack for exhausting hot gases from the combustion chamber externally of the building....     

A device is disclosed for recovery of heat from hot shell devices, particularly from motor-compressor units such as used in air conditioners, refrigeration systems and the like and which comprises a heat exchange coil in encircling, contacting heat exchange relationship to the hot shell device with circulation...     

Thermal system which simultaneously collects heat from waste water and from the dehumidification of a living space and utilizes the heat thus collected to heat water; the transfer of heat is accomplished by a heat exchange medium circulating in a closed loop system.

A cascade heat exchange system in which the heat given off in condensing a superheated vaporized refrigerant is used to vaporize carbon dioxide and to add sensible heat to a water system. The superheated discharge vapor of a refrigeration system is pumped into the shell side of a heat exchange vessel,...     

A waste heat recovery system for use with refrigeration means and a hot water reservoir is disclosed. The system is intended for use with refrigeration means of the type including a compressor and a condenser through which a compressible refrigerant is circulated. The system includes a heat exchanger...     

The present invention provides an energy conservation and utilization arrangement for use with an expansible refrigerant air conditioner including a refrigerant circuit with a compressor, refrigerant condensor and expansion means to selectively heat a reservoir of fluid, for example, the water used in...     

Incoming cold water is delivered to a storage tank upstream from the customary domestic hot water heater. Waste heat recovery coils are located in the furnace flue and on the outlet of an air conditioning condenser unit. A system pump upstream from the water heater and between it and the storage tank...     

Heat reclaiming method and apparatus for use with a vapor compression refrigeration circuit, a heat transfer fluid, and a heat storage facility. The heat reclaiming apparatus comprises a heat reclaiming condenser connected to the refrigeration circuit for receiving refrigerant vapor therefrom and discharging...     

Heat reclaiming method and apparatus for use with a vapor compression refrigeration circuit, a heat transfer fluid, and a heat storage facility. The heat reclaiming apparatus comprises a heat exchanger connected to a compressor and a condenser of the refrigeration circuit for receiving refrigerant vapor...     

A heat transfer system for using solar energy to modify the temperatures of conditioned space in a building and to supply domestic hot water for the building. Part of the system is mounted to a core that forms a structural column of the building. The system incorporates selector mechanisms for selectively...     

A heat-exchanging system having an upright water tube in a water tank with an open upper end and connected at each end to a surrounding tube of larger diameter which forms a spaced jacket therearound and a centrally arranged tube connected at its lower end to the discharge of a compressor of a refrigerating...     

Food defrosting apparatus comprising a refrigerator, a pair of thawing and storage water tank evaporators which cooperate with the refrigerator to form independent first heat exchanging circuits, respectively, a pair of thawing and storage water tanks in which are contained the thawing and storage water...     

A closed circuit heating system which is capable of extracting either "high" grade (solar) heat or "low" grade (non-solar) heat from the surrounding atmosphere and then using it to heat air, water, etc., includes a first (external) heat exchanger in the form of a solar panel for heating a volatile fluid...     

An earth type heat pump having a heat exchanger including an evaporator coil and a compressor, condenser, receiver and expansion valve in series with the evaporator coil for delivering heat picked up at the heat exchanger from the condenser, and heat pickup tubes positioned vertically in the earth and...     

A swimming pool heating system which utilizes a heat pump that is used for heating heat transfer fluid which is circulated through the primary coil of a heat exchanger. The pool water is circulated through the secondary coil of the heat exchanger by means of a standard pool pump. Rather than heating...     

The system described is useful in connection with a gas compressor that has a heat exchanger. Water conduits, a water pump and water control valve and cooler are connected in such a manner that the water circulated through the heat exchanger is directed to an energy consumption device wherein the heat...     

The absorption heat pump installation operates with water as a working medium. The installation is equipped with an energy accumulator which acts as a direct evaportor and is operated through the choice of a suitable hydroscopic absorption medium at the triple point of water (6.1 mbar, 0.degree. C.)...     

A building heating and cooling system which eliminates the need for a dual circuited condenser in a water to water heat pump. The system includes a cooling tower water circuit, a device for cleaning and treating the water in the cooling tower water circuit, and a hot water circuit in the building. A...     

There is provided a water storage heater having a heat pump including a compressor, a condenser and an evaporator. The condenser is arranged in heat relationship with a wall of an inner hot-water container. An outer shell is spaced from and surrounds the inner container to provide an interspace, at least...     

A heat accumulator comprises a thermally-insulated reservoir full of paraffin wax mixture or other flowable or meltable heat-storage mass, heat-exchangers immersed in the mass, a heat-trap connected to one of the heat-exchangers, and a heat user connected to the other heat-exchanger. Pumps circulate...     

A heat pump, driven by a free piston engine, wherein a refrigeration type of heat transfer unit is used and no externally energized electric motors are required but could be used, if desired. The engine is larger in horsepower than would be required for driving the compressor of the unit only, as it...     

A heat exchange element is inserted directly into a water heater storage tank of a new or existing water heating system. The heat exchange element is provided with standard pipe thread connections and adapted to be installed in standard threaded openings in conventional tanks. The heat exchange element...     

An engine-driven refrigeration unit includes a first heat exchanger functioning alternatively as a refrigerant condenser or as a refrigerant evaporator. When the heat exchanger is functioning as a refrigerant evaporator the heat transfer medium furnished thereto for providing a source of heat to vaporize...     

The heat collector system comprises a heat collector connected to a heat p. The heat collector has an inlet conduit and contains a heat transmitting fluid and is effective to take radiation heat from the environment. The heat collector has a structural configuration effective to additionally absorb convection...     

The invention relates to a compact heating assembly of the heat pump type, comprising a heat pump circuit having a compressor, an evaporator and a condenser, wherein the evaporator and condenser parts, together with means for heat exchanging heat carrying fluids against the same, are arranged in a housing....     

This invention relates to a hot water system which utilizes heat from the refrigerant of a refrigeration system to produce hot water. The utilized heat consists of the superheat of the refrigerant vapor, the latent heat of condensation, and part of the sensible heat of the liquid refrigerant. The water...     

This disclosure relates to a heat exchanger which includes an A-coil through which a heat-exchange medium (refrigerant) is circulated between an inlet and an outlet thereof, a compressor in fluid communication with the outlet for compressing a vapor phase of the heat-exchange medium, and means for generating...     

A heating system of the heat pump type is disclosed in which the outside coil, employed to reject heat in air conditioning mode or to absorb heat in heating mode, is supplied with heat independently of that provided by ambient air when the efficiency of the system falls off due to low ambient air temperature....     

A vapor generating and recovering apparatus for vaporizing a liquid and condensing a vapor, the apparatus including a container having a liquid therein with a heating and cooling system in heat transfer relation with the liquid and vapor in the container. The heating and cooling system includes means...     

A converter for connecting a second condenser in series in a process fluid chilling loop system including a compressor, a discharge service valve mounted on the compressor outlet, a condenser, and a refrigerant-to-process fluid heat exchanger. The converter includes a housing, mounted on the compressor...     

A refrigerant condensing system for heating water includes a thermostatically-operated valve for delivering 140.degree. F. water from a condenser to the top of a water storage tank and a by-pass valve for allowing the heated water from the condenser, which is then heated to a lower temperature, to flow...     

What is disclosed is an improvement in a heat pump water heater wherein the elements are disposed in a thermoplastic, molded base atop the hot water storage tank. The molded base has a drain for draining off liquid condensate. The condenser is in the form of a coil having the respective refrigerant and...     

A heat collection system is disclosed which is capable of collecting heat from an animal husbandry enclosure (10), such as a dairy barn, and transferring the heat into a home (12). Animal husbandry enclosures, such as dairy barns, tend to have excess heat, even in winter, the excess heat normally being...     

A container construction and combination in which a container for confining water is provided with a metal heat exchanger disposed vertically within the container. The heat exchanger is comprised of inner and outer tube structures joined together in heat exchange relationship by fins extending between...     

A water heater construction and the method of operation thereof including a water tank containing water to be heated; a heat pump having condenser heat exchanger externally of the water tank; circulation means for circulating water from the lower end of the water tank through the condenser heat exchanger...     

What is disclosed is a heat pump apparatus for conditioning a fluid characterized by a fluid handler and path for circulating the fluid in heat exchange relationship with a refrigerant fluid; at least two refrigerant heat exchangers, one for effecting heat exchange with the fluid and a second for effecting...     

Method and apparatus for utilizing the earth as a heat source and heat sink for heating and cooling buildings are disclosed. Flexible material such as hollow plastic or metal foil bags which can be buried in deep, narrow trenches are draped over and clamped to heat transfer fluid conduits or conventional...     

The invention relates to a heating system comprising a compressor for supplying a heated medium, preferably a heated gas, for example Freon gas, to two pipe coils each adapted to heat one fluid by means of the medium, the fluid flowing through the pipe coils and from the pipe coils to the compressor....     

A method of providing auxiliary hot water to a hot water system wherein water is conducted into the system from a water supply and divided into a cold water branch and a hot water branch with the hot water branch including a hot water heating tank and each branch terminating downstream at a valve. The...     

The present invention provides for a refrigerator-oven complex based on the principle of the operative circuitry of the conventional refrigerator or freezer, specifically it means the additional incorporation of an empty box with temperature conservancy equipments at a suitable quarter of the conventional...     

A thermally-integrated system combining a heat exchange unit including a tank containing unpressurized water with a compressor-type refrigerator in a manner whereby energy for heating cold water conducted through the unit in a pressurized cold water line is extracted from the refrigerator. In the system,...     

A cylindrical convection heat dissipation tower is shown having a top and bottom cap with wound heat exchange coils dispersed within the tower. Cooling fluid is introduced gradually at the bottom of the tower while warmer cooling fluid is discharged from the top of the tower. The tower utilizes "stacking"...     

The invention is the design of a heat pump and heating and air conditioning system that improves the performance at part loads, and lowers the operating costs by heat storage and/or modulating the output of the system to meet the heating and cooling needs of the building. The invention uses the technologies...     

Useful heat from an ice-maker is efficiently recovered and employed to heat water without any significant increase in the energy normally expanded in making ice. During ice-making, liquid refrigerant from a high-pressure receiver is expanded and supplied to an evaporator where ice-making occurs. Expanded...     

The apparatus of the invention includes a precooler (post heater) heat exchanger and a subcooler heat exchanger which are connected in fluid communication with the refrigerant input and output, respectively, of the condenser (evaporator) of a heat transfer system. A fluid, such as water, is forced through...     

A hybrid double absorption air cooling system employing a liquid desiccant solution and capable of operating at low heat source temperature between 55.degree. C. and 80.degree. C. is provided. In one embodiment the system which utilizes low-grade thermal energy, includes an open absorber employing a...     

Disclosed is a reversible, solar assisted heating system comprising an unglazed solar heat exchange panel, a storage tank, and a water source heat pump. In the heating mode, heat is collected from the air and sun through one or more unglazed panels, transferred to a storage tank and then to a heat pump....     

Geothermal hot water system including a hot water tank and a warm water tank which are heated independently of each other by a close loop freon system. The closed loop freon system includes a main condenser which heats water for the warm water tank and a super-heated condenser which heats water for the...     

A heating system employing a heat pump, which is provided with a source of heat created by a second system employing refrigerant as a heat transfer medium, is provided. In the second system the refrigerant passes through a structure wherein the refrigerant is boiled. The refrigerant is then passed by...     

A connection assembly for connecting an external heating unit to a heater water tank comprising a mounting assembly connected to a tank opening with a passage opening interiorly of the water tank and connected to the heating unit exteriorly of the water tank, a tube assembly extending through the mounting...     

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...     

A heat exchange assembly for reclaiming heat energy from the refrigerant of an air conditioning system comprises a plurality of tube-in-tube heat-exchange coils each adapted to receive the refrigerant and the flow of water through respective tubes in counterflow for heat exchange therebetween. Inlet...     

A heat pump refrigeration circuit for heating a space, cooling a space, heating a liquid, heating a space and heating a liquid or for cooling a space and heating a liquid in which indoor and outdoor heat exchangers, a liquid heat exchanger and liquid supply means, compressor, conduit and valve means...     

A heat-transmitting device is adapted for use in a heat pump system which typically includes a throttle device, an evaporator, a compressor, and a further heat-transmitter device. The heat-transmitting device has a core tube coaxially disposed in a tubular shell. The region between the core tube and...     

Known systems for recovering heat from refrigeration plant make no distinction between the different kinds of heat being recovered and use both low and high grade heat together to raise the temperature of say a water tank. The present invention provides a system in which low grade heat i.e. recovered...     

Dual flow circuitry is utilized to transport fluid held in a tank through a heating means by providing means for carrying both inflow and outflow streams and means for depositing the inflowing stream at a predetermined level in the tank while utilizing only one tank opening. The dual flow circuitry can...     

A heat pump air conditioning system with an active digital control of the refrigeration cycle thereof to improve the coefficient of performance. The system can incorporate solar collectors in parallel with the outdoor heat exchanger and a water storage tank in the system to maximize the utilization of...     

A computer cooling system has gaseous refrigerant compressed in a compressor and delivered to a first stage condenser. The first stage condenser includes a heat exchanger through which return coolant from the building heating system circulates to partially condense the gaseous refrigerant. The partially...     

Method and apparatus to extract heat by transferring heat from hot compressed refrigerant to a coolant, such as water, without exceeding preselected temperatures in the coolant and avoiding boiling in a water system by removing the coolant from direct or indirect contact with the hot refrigerant.

A container construction and combination in which a container for confining water or other fluid to be heated is provided with a metal heat exchanger disposed within the container. The heat exchanger is comprised of a single wall tube structure having outwardly directed fins extending in a vertical direction...     

An absorption type heat pump system including a first heat pump of the absorption type and a second heat pump of the absorption type. The first heat pump includes a generator equipped with a heating source, a condenser, an evaporator, an absorber, and a solution heat exchanger for drawing off hot water...     

A heat-transmitting device is adapted for use in a heat pump system which typically includes a throttle device, an evaporator, a compressor, and a further heat-transmitter device. The heat-transmitting device has a core tube coaxially disposed in a tubular shell. The region between the core tube and...     

A heat pump with a compressor arrangement whose condenser forms a heater for water, and whose evaporator is arranged to be heated by air which by means of a fan in a fan space is blown through the evaporator. An air path for ambient air or an air pass for room air is connected alternatively to the fan...     

A water heating system comprising an outdoor heat exchanger including a heat collection chamber, solar collector panels, collector fins, an evaporator for passing refrigerant therethrough to perform the heat exchange between the refrigerant and the heat transferred from the panels and fins to evaporate...     

The cooling system employs a refrigeration machine having two condensers and an evaporator. The evaporator is connected in heat exchange relation with a low-temperature cooling circuit having a water accumulator. A cooling tower circuit for a higher temperature is connected with one condenser in order...     

A ground water system for a domestic storage tank and reversible heat pump is arranged to prevent the build up of excessive pressure in the storage tank when the flow of water through the heat pump is restricted to a defined degree by the operation of valve means controlling the water flow as required...     

A heat exchanger system includes a boiler and a double sleeve pipe which is disposed in the boiler and has coaxial inner and outer pipes. The inner pipe is connected to a heat pump, and carries a first fluid medium. The outer pipe is connected to a fluid circuit which includes a pump and a three-way...     

In a hot water system, a receptor heat exchanger unit mounted in a wall with a flat surface exposed in a room. A refrigerator positioned in that room has a plate with a condenser coil thereon. The plate is exposed, and it extends outwardly beyond the wall of the refrigerator body and at the wall, and...     

A climatic control system for the seasonal heating and cooling of air circulated through a temperature control chamber, including a three coil heat pump having a cooling mode coil and a separate heating mode coil positioned in the chamber for selective operation, and a heat reclaim condenser coil of...     

A novel heat management system for aircraft is provided which is based on the aircraft fuel as the heat exchange medium and comprises a dedicated thermal reserve fuel tank for containing refrigerated aircraft fuel (or other expendable liquid) which is cooled by heat exchange with the primary aircraft...     

Heat is recovered by combining a heat transfer system including heat exchangers interconnected in a circulatory system, with a heat pump system. The heat pump system is preferably operated in accordance with the Lorenz-Principle. It is not necessary to divide the heat carrier circuit of the heat pump...     

A de-superheater is positioned between the compressor and the condenser of a refrigeration circuit and a pump circulates heat-transfer fluid past the de-superheater to heat it to a temperature higher than fluid heated by the condenser. The de-superheater is by-passed by a refrigerant line and a valve...     

An improved refrigerating apparatus including a compressor, air cooling type condensers, an expansion valve and an evaporator which are connected in series one after another in the refrigerating system, is disclosed, wherein the improvement consists in that the air cooling type condensers comprise an...     

An environmental control system for controlling the environmental conditions in a swimming pool hall 1 comprises a heat pump having a multi-section evaporator 8, compressors 23a and 23b and a multi-section condensor 18. In the day-time, the dry bulb temperature in the pool hall is maintained by circulating...     

A heating and cooling system for a building having a number of separately-controlled zone heat pumps includes a circulation conduit for heating or cooling a heat transfer fluid circulated throughout the system, and individual heat pumps for each of the controllable zones. Prior to dissipation of excess...