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WO/1994/007098A1 |
In the method of the invention, an unknown mass fraction (F) of solid cryogen in a stored cryogenic refrigeration system is determined. The method includes the steps of adding mass (T) of a trace substance which is soluble in the liquid ...
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WO/1993/024876A1 |
A heat pump system for an occupied space of a building comprising a fuel-fired heat engine (12) and a heat pump compressor (11) driven by the heat engine (12), the mechanical horsepower output capacity of the engine (12) being substantia...
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WO/1993/024795A1 |
A system for controlling operation of a refrigerating device, which system comprises: a refrigerant circuit (9), in which a compressor (1), a condenser (6), a receiver (4), a pressure-reducing valve (5) and an evaporator (3) are connecte...
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WO/1993/022606A1 |
A passive defrost system uses a heat-exchanger/storage defrost module (40) containing a thermal storage material such as a phase change material to capture and store low grade, waste heat contained in the liquid refrigerant line of a ref...
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WO/1993/011210A1 |
There are disclosed refrigeration working fluid compositions comprising tetrafluoroethane refrigerants and certain polyol esters of C7-C10 branched alkanoic acids or mixtures of such branched acids with linear C7-C10 monoalkanoic acids. ...
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WO/1993/003311A1 |
Temperature control apparatus (1) for controlling temperature in a building comprises a central unit (2) for supplying a heat transfer medium, namely, water to a remote unit (3) through a circulating circuit (4). The central unit compris...
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WO/1992/021921A1 |
The present combined multi-modal apparatus involves: (a) apparatus for cooling (12), by means of a refrigerant circulating within coils (24) disposed in a tank (20), a negative heat energy storage material (22) during a first time period...
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WO/1992/001892A1 |
A reversible refrigeration plant serves as an air conditioner for cooling air or alternatively as a heat pump for heating air. Functions of a refrigerant evaporator and condenser are reversed in the different modes. A main stream of inle...
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WO/1991/013298A1 |
A hot gas defrost refrigeration system has a compressor (10), a condenser (20), a receiver (60), an evaporator (40), interconnected by fluid passage means and incorporating valve means to cause refrigerant to flow sequentially through th...
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WO/1991/010868A1 |
A method of utilizing the high energy values of fossile fuels in central heating boiler systems. The boiler system comprises a processor which includes an air heat pump (5) which functions to cool the system flue gases by condensation. A...
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WO/1990/007683A1 |
The present invention involves the regulation of specific enthalpy at evaporator inlet by deliberate use of the pressure and/or temperature before throttling for capacity control. Capacity is controlled by varying the refrigerant enthalp...
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WO/1990/002300A1 |
A heat pump for heating or cooling dwelling houses or like confined spaces includes a refrigerant circuit which comprises a compressor (1), a first heat-exchanger (7) thermally connected to a heat source, a second heat-exchanger (4) ther...
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WO/1989/003962A1 |
This invention belongs to the technical field of an air-conditioner using a regenerative cooling cycle. A conventional apparatus for cooling the interior of a room with the cooling heat stored in an accumulator is constructed so that a c...
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WO/1988/007162A1 |
Improvements in systems for heating and cooling liquids which comprise the components of refrigeration such as a compressor, a condensor coil, an evaporator coil, a refrigerant, and expansion valve, in their well known interrelationship ...
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WO/1988/001716A1 |
A bidirectional heat transfer system including a reversing valve (20) and a compressor (24) has a compressor control (45, 80) which is subject to a welded contact failure. The system is monitored to determine when the control system has ...
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WO/1988/000676A1 |
An air-conditioning system which provides a controlled temperature and humidity environment. The system includes two indoor heat exchangers (5, 10), one outdoor heat exchanger (2), a four-way valve (8) and a compressor (1). Each heat exc...
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WO/1986/003578A1 |
A heat pump (10) and method which include a compact two-compartement housing (24, 26) in which each compartment contains a condenser-evaporator (15). The heat pump (10) has vertically aligned upper (24) and lower (26) compartments instal...
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WO/1986/000976A1 |
A residential HVAC system includes a heat pump (14) having a compressor (24) arranged to heat a domestic hot water vessel (S2) and to heat or cool a storage vessel (S1) which is connected to a heat exchanger (HX-1) within the residence. ...
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WO/1983/003133A1 |
A reversible mode heating and cooling system comprises a conventional reversible heat pump unit having a compressor (12), a reversible valve (14), an indoor heat exchanger (16), in heat exchange relationship with indoor ambient air, refr...
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WO1982001220A1 |
Method and machine allowing a quasi-isothermal compression or expansion process within any thermodynamic cycle containing such transformations. The method is implemented by the use of heat exchangers (A and B) independent from each other...
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WO/1981/003684A1 |
Plant for the transformation and transport of thermal energy, particularly for driving heat pumps, comprising at least one exchanger (9, 10, 11) effecting the expansion of a fluid in a cyclic mode by technical means or in a natural way. ...
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WO/1981/000444A1 |
A heat pump (2) intended for heating is connected to an underground water supply tank (10). This tank is heat insulated by a hard foam layer (16). The fluid returned from the heat pump runs through a bundle of tubes (17) coiled on the ha...
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WO/1980/002870A1 |
Heat pump apparatus for conditioning a fluid characterized by a fluid handler (17) for circulating the fluid in heat exchange relationship with a refrigerant fluid; two refrigerant heat exchangers (21, 25) one (21) for effecting the heat...
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WO/1980/000491A1 |
A device for a heating or cooling unit such as, for example, a heat pump where the energy carrier is a substance, the volume of which varies substantially with the temperature, for example freon. In such a unit, which comprises condenser...
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JP7475298B2 |
To suppress increase in size.A heat exchange unit (100) is the heat exchange unit of a refrigeration cycle and includes a plurality of refrigerant flow passages (120) and a flow rate adjustment part (140). In the plurality of refrigerant...
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JP2024517209A |
A double hybrid heat pump, system, and method of operation that provides increased efficiency, hot water, and other benefits in both heating and cooling modes. This system includes a compressor for compressing low-pressure gas-phase refr...
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JP7471460B2 |
The present disclosure obtains a refrigeration cycle device in which refrigerant deficiencies occurring when a refrigerant circulation circuit is switched are suppressed. A refrigeration cycle device according to one embodiment of the ...
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JP2024054881A |
An object of the present invention is to provide an air conditioner in which a storage heat exchanger is less likely to be damaged. [Solution] A compressor that compresses a refrigerant, a heat storage tank that houses a heat storage mat...
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JP7469621B2 |
An air conditioner (1) includes a heat-source-side unit (2), a plurality of use-side units (3a, 3b, 3c, 3d), an intermediate unit (4), and two connection pipes (5, 6). The intermediate unit (4) switches each of a plurality of use-side he...
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JP7467827B2 |
To provide an air conditioner which is not repeatedly brought into a thermo-off state and a thermo-on state and therefore allows for prevention of degradation in energy-saving performance thereof and shortening of a service life of a com...
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JP2024052459A |
An object of the present invention is to propose a heat source unit for an air conditioner that suppresses the occurrence of pressure abnormality in a refrigerant flow path due to a filled carbon dioxide refrigerant becoming supercritica...
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JP2024052348A |
An object of the present invention is to prevent the density of refrigerating machine oil from becoming lower than the density of a refrigerant in a container. A refrigeration cycle device (1) includes a first circuit (5a), a second circ...
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JP2024047891A |
The present invention provides an air conditioner with further improved operating efficiency. [Solution] The air conditioner has a refrigeration cycle that has an outdoor heat exchanger, an indoor heat exchanger, a compressor, and an exp...
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JP2024047055A |
[Problem] To shorten the length of a refrigerant flow path, and to reduce the length of a refrigerant flow path from a pressure reduction device to multiple heat exchangers, or from multiple heat exchangers to a pressure reduction device...
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JP7459907B2 |
According to the present invention, when employing a refrigeration cycle circuit equipped with a heat storage device while employing a multi-stage refrigeration cycle, a sufficient amount of refrigerant in the refrigeration cycle circuit...
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JP7458771B2 |
To provide an outdoor unit which can reliably cause supercooling at the upstream side of an expansion valve even if a non-azeotropic refrigerant mixture is used.An outdoor unit 2 includes: an expansion valve 7 which expands a non-azeotro...
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JP7457966B2 |
An air conditioning apparatus suppresses sticking of an opening and closing device and suppresses an amount of refrigerant leakage from an indoor unit. In an air conditioning apparatus 1 including an outdoor unit 20 having a compressor 2...
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JP7456114B2 |
To enhance a heat radiation property of an opening/closing mechanism of an opening/closing valve.A cooling/heating switching device includes: a plurality of refrigerant pipelines; a plurality of opening/closing valves provided at the plu...
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JP7455211B2 |
Provided is an air conditioning apparatus. The air conditioning apparatus includes a heat exchanger in which the refrigerant and the water are heat-exchanged with each other, a high-pressure guide tube extending from a high-pressure gas ...
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JP2024039201A |
The present disclosure provides a refrigeration cycle device capable of suppressing a decrease in heat exchange capacity in a regenerative heat exchanger and improving defrosting performance and heating capacity. [Solution] A compressor ...
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JP2024037365A |
[Problem] To propose a heating system for a ship that can eliminate parts subject to chemical cleaning from a heat pump type unit. A heating system for a ship includes a first unit 10, a seawater heat exchanger 101, a second unit 20, and...
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JP7450807B2 |
An air-conditioner (100) is provided with a refrigerant circuit (RC) and an indoor fan (10). The refrigerant circuit (RC) has a compressor (1), a first four-way valve (2), an outdoor heat exchanger (3), a first expansion valve (4), a sec...
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JP2024035852A |
An object of the present invention is to provide a refrigeration cycle device in which a receiver can be made smaller and the amount of heat dissipated in the receiver can be reduced. [Solution] In the refrigeration cycle device of the p...
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JP7448848B2 |
Provided is an air conditioning device which can reduce a filled refrigerant amount. This air conditioning device (1) comprises: an indoor heat exchanger (31); an outdoor heat exchanger (40); and a four-way switching valve (22) that swit...
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JP7448775B2 |
To provide a refrigeration cycle device capable of suppressing suction of a liquid refrigerant from a heat source heat exchanger to a compressor.An air conditioner 1A includes: a refrigerant circuit 10 including a compressor 21, a heat s...
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JP2024030323A |
The present invention provides a refrigeration cycle and a vending machine that are configured to include an internal heat exchanger and can perform cooling and heating in just the right amount. [Solution] A refrigeration cycle according...
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JP7444230B1 |
[Problem] To improve comfort. [Solution] The air conditioning system includes a pump 8 that circulates water in a water circuit 4, a plurality of indoor heat exchangers 7-1 to 7-3 provided in the water circuit 4, and a plurality of indoo...
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JP7438397B2 |
A refrigeration cycle apparatus includes a heat source unit including a compressor, a flow switching valve, a first heat exchanger, and an expansion valve, an air-conditioning unit including a second heat exchanger and configured to perf...
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JP7436933B2 |
The invention achieves inhibition of temperature decrease in a utilization heat exchanger during defrosting operation. There are provided: a primary refrigerant circuit (5a) allowing circulation of a primary refrigerant and including a p...
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JP7433470B2 |
To provide a refrigeration cycle device that has a refrigerant flow path with a structure to form a counter flow of air and refrigerant not only during cooling, but also during heating, and that allows low-pressure two-phase refrigerant ...
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