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JP5819006B2 |
There are provided a high-temperature side circulation circuit A including a high-temperature side compressor 1, a high-temperature side condenser 2, a high-temperature side expansion valve 3, and a high-temperature side evaporator 4 seq...
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JP5819000B2 |
A refrigeration apparatus 100 includes a first refrigerant circuit 50 having a first evaporator 4, a second refrigerant circuit 60 having a second condenser 7, and a cascade condenser 15 formed by the first evaporator 4 and the second co...
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JP5818996B2 |
A refrigeration apparatus 100 includes a high temperature side refrigerant circuit controller board 24 and a low temperature side refrigerant circuit controller board 26, which are implemented using identical boards and are connected to ...
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JP5815682B2 |
In accordance with an embodiment of the invention, there is provided a method for cooling a load, the method comprising: compressing a primary refrigerant (104) in a primary compressor (109) of a closed loop primary refrigeration system,...
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JP5814387B2 |
A cascade heat pump system is configured with variable-speed compressors which allow operation at a high system coefficient of performance for a given thermal load. An electronic control module may be utilized to dynamically vary the spe...
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JP5806993B2 |
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JP5806940B2 |
A heat pump system (1) has a refrigerant circuit (20) and a controller (1a), The refrigerant circuit (20) has usage units (5a, 5b) connected to a heat source unit (2), the usage units (5a, 5b) having first usage-side heat exchangers (51a...
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JP5800994B2 |
A refrigeration apparatus 1 includes a high-temperature side cycle 11 in which a refrigerant circulates, the high-temperature side cycle 11 including a high-temperature side compressor 12, a high-temperature side condenser 13, a high-tem...
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JP5800842B2 |
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JP5800998B2 |
The present invention is characterized by being equipped with: a high-temperature-side refrigerant circuit (A), which circulates a refrigerant and is formed by sequentially connecting by pipes a high-temperature-side compressor (1), a hi...
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JP2015183929A |
To provide a heat pump type heating device capable of improving COP in activation or in low-outside air temperature, and capable of causing an outgoing heat medium temperature to reach a setting (target) outgoing heat medium temperature ...
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JP2015529789A |
A method for generating heat in a cascade heat pump having a low temperature cascade stage and a high temperature cascade stage, in which the condenser in the high temperature cascade stage is Z-1,1,1,4,4,4-hexafluoro-2-. It involves the...
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JP2015178920A |
To provide a refrigeration device capable of properly supercooling a high pressure-side refrigerant of a low stage-side refrigerant circuit comparatively at a low cost.In a refrigeration device 1 which includes a high stage-side refriger...
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JP2015178919A |
To provide a refrigeration device capable of improving cooling capacity and efficiency by controlling a high pressure-side pressure of a low stage-side refrigerant circuit to an optimum value.In a refrigeration device 1 which includes a ...
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JP5788526B2 |
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JP5778157B2 |
A two-stage cascade refrigeration system 20 is provided having a first refrigeration stage and a second refrigeration stage. The first refrigeration stage defines a first fluid circuit for circulating a first refrigerant 34, and has a fi...
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JP5775596B2 |
Provided is a hot-water supply and air-conditioning device with which the overall system efficiency is improved with a simple configuration. The present invention is equipped with: a hot-water supply refrigerant circuit (20), in which a ...
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JP5774116B2 |
The refrigerant discharged from a compressor (21) is distributed based on the priorities set by the user in advance and the remaining refrigerant is further distributed based on the priorities. Thus, setting the priorities for indoor uni...
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JP2015155789A |
To perform a defrosting operation while suppressing a decrease in a space temperature around a heating load. The heating unit is a heat pump type heating device including a heating unit 200, a dual type heat pump unit 150 including a low...
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JP2015148427A |
To improve a heating feeling by shortening time in which a heating medium spreads to the entire heating terminal at operation start time in a heat pump type heating device.When preset temperature of temperature of a forward heating mediu...
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JP5764734B2 |
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JP5761857B2 |
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JP5758913B2 |
The temperature of high-temperature water h at the exit of a condenser 18 is maintained to be within a setting range by control of, under an operation with all cylinders, capacity of a reciprocating compressor 16 in the period between a ...
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JP5759076B2 |
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JP5751299B2 |
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JP5744424B2 |
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JP5740790B2 |
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JP5738751B2 |
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JP5732709B1 |
To ensure an extremely low temperature heat medium suitable for cooling hydrogen gas for a heat exchanger for cooling hydrogen gas without wasting energy due to supercooling of the heat medium and deteriorating pipes and the like. Provid...
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JP5724476B2 |
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JP3197464U |
To provide a heat pump device which controls a thermodynamic cycle responsible for supplying a heat source having a predetermined temperature by using underground heat, and a heat pump device (air conditioner, which is controlled as a se...
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JP5716207B1 |
To cool a heat medium solution in a short time to an extremely low temperature capable of sufficiently cooling an object to be cooled without causing damage to a compressor, an emergency stop of a refrigerating circuit and waste of energ...
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JP5717584B2 |
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JP5716208B1 |
To reliably supply a sufficient amount of heat medium to a heat exchanger for cooling hydrogen gas when supplying hydrogen gas while avoiding a high load state of a refrigeration circuit on a low temperature side. A refrigeration unit 2 ...
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JP5711448B2 |
A heat pump system (1) include: a heat-source-side refrigerant circuit (20) having a heat-source-side compressor (21), a first usage-side heat exchanger (41a) capable of functioning as a radiator of the heat-source-side refrigerant, and ...
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JP5709575B2 |
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JP5702508B2 |
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JP2015068630A |
To provide a heat pump device capable of improving energy efficiency even when temperature change of a heated medium is small, and a cogeneration device utilizing the heat pump device.A heat pump device 1 has a hot water storage circuit ...
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JP5699310B1 |
To supply a sufficient amount of heat medium while suppressing an increase in manufacturing cost. A plurality of refrigeration units 2 and a plurality of liquid feed pumps 6 (6a, 6b) connected to the units 2 (2a to 2d) are provided, and ...
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JP5693247B2 |
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JPWO2013046269A1 |
The air-conditioning hot water supply complex system 100 is when at least one of the indoor unit 130 and the hot water supply unit 140 requests an operation permission while at least one indoor unit 130 and at least one hot water supply ...
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JP5685740B1 |
To preferably avoid a situation in which a pressure in a heat medium solution circulation path is significantly changed due to a change in volume of the heat medium solution without causing a situation in which a large amount of water is...
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JP2015507666A |
The present invention relates to a method of heating with a high temperature heat pump. The method comprises the step of condensing a vapor working fluid containing E-HFO-1438mzz and optionally HFC-245eb in a condenser, thereby producing...
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JP5681787B2 |
A binary refrigeration cycle system includes: a low temperature-side refrigeration cycle including a heat source-side heat exchanger that absorbs heat from an external heat source, and a low temperature-side compressor; a high temperatur...
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JPWO2013021762A1 |
It is a heating system that can improve the coefficient of performance (COP) when the heat medium is heated stepwise by a plurality of refrigeration cycles, and exchanges heat between the refrigerant discharged from the compressor and wa...
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JPWO2013018148A1 |
The discharge capacity can be changed, and the high temperature side compressor 11, the high temperature side condenser 12, the high temperature side drawing device 13 and the high temperature side evaporator 14 that discharge the high t...
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JP5659292B2 |
According to one embodiment, a cascade refrigeration cycle apparatus according to the present embodiment includes a high-temperature-side and a low-temperature-side refrigeration circuits, an inverter and a control section. The high-temp...
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JP5656691B2 |
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JP2015501414A |
A method of heating with a high temperature heat pump is provided that comprises the step of condensing a vapor working fluid containing HFC-245eb and optionally Z-HFO-1336mzz in a condenser, thereby producing a liquid working fluid. A m...
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JP5652371B2 |
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