Heat pump circulating system and method thereof

A circulation system and heat pump technology, applied in heat pumps, compressors with reversible cycles, lighting and heating equipment, etc., can solve the problems of not being able to use tap water as a heat source, and achieve improved primary energy utilization efficiency, low heat source costs, and reduced equipment cost effect

Inactive Publication Date: 2011-07-27
苏庆泉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The main purpose of the present invention is to overcome the defect that tap water cannot be used as the heat source in the existing heat pump cycle system and method, and provide a heat pump cycle system and method. The technical problem to be solved is to make it use tap water as the heat pump cycle The heat source in the heat pump can improve the energy efficiency of the heat pump cycle system, making it more suitable for practical use

Method used

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  • Heat pump circulating system and method thereof
  • Heat pump circulating system and method thereof
  • Heat pump circulating system and method thereof

Examples

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example 1

[0078] With commercial electricity as power, adopt the method of embodiment 5 for heating. The inlet temperature of the internal heat exchanger (that is, the condenser) of the external working medium is 37°C, the outlet temperature of the internal heat exchanger is 45°C, the external air temperature is 10°C, and the temperature of the water source (tap water supplied by the city) is 15°C , the evaporation temperature of the refrigerant in the external heat exchanger (that is, the evaporator) is 8°C, and the external heat exchanger is filled with paraffin wax with a carbon number of 15, and its freezing point and solidification heat are about 10°C and 170kJ / kg, respectively. The condensing temperature of the refrigerant in the internal heat exchanger is 50°C, the adiabatic efficiency of the compressor is 0.85, and its heat supply coefficient (COP) is 5.45. Since the power generation efficiency of the utility power at the user end is usually 33%, the primary energy efficiency of...

example 2

[0080] With commercial electricity as power, adopt the method of embodiment 5 to supply cooling. The inlet temperature of the internal heat exchanger (that is, the evaporator) for the external working medium is 15°C, the outlet temperature of the internal heat exchanger is 7°C, the external air temperature is 35°C, and the temperature of the water source (tap water supplied by the city) is 25°C , the evaporation temperature of the refrigerant in the internal heat exchanger is 2°C, the condensation temperature of the refrigerant in the external heat exchanger (ie condenser) is 32°C, and the external heat exchanger is filled with paraffin wax with a carbon number of 18, Its freezing point and freezing heat are about 29°C and 240kJ / kg respectively, the compressor's adiabatic efficiency is 0.85, and its cooling coefficient (COP) is 6.66.

example 3

[0082] Adopt the method heating of embodiment 6. The inlet temperature of the internal heat exchanger (i.e. the condenser) of the external working fluid supplied is 37°C, the outlet temperature of the internal heat exchanger is 42°C, the outlet temperature of the heat exchanger 33 is 45°C, the external air temperature is 10°C, and the source water ( The temperature of municipal tap water) is 15°C, the evaporation temperature of the refrigerant in the external heat exchanger is 8°C, and the external heat exchanger is filled with paraffin wax with a carbon number of 15, and its freezing point and solidification heat are about 10°C respectively and 170kJ / kg, the condensing temperature of the refrigerant in the internal heat exchanger is 47°C, the adiabatic efficiency of the compressor is 0.85, the proton exchange membrane fuel cell power generation sub-system uses natural gas as raw material, its power generation efficiency is 37%, and the heat recovery efficiency 40%. The COP o...

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Abstract

The invention relates to a heat pump circulating system and a method thereof. The heat pump circulating system comprises a compressor, an internal heat exchanger, a throttling valve, an external heat exchanger and a four-way valve. The four-way valve is respectively connected with the refrigeration working medium entrance of the compressor, the refrigeration working medium exit of the compressor,the internal heat exchanger and the external heat exchanger; the four-way valve is provided with a first valve position and a second valve position; when the four-way valve is positioned at the firstvalve position, the refrigeration working medium exit of the compressor is connected with the external heat exchanger and the refrigeration working medium entrance thereof is connected with the internal heat exchanger; and when the four-way valve of the compressor is positioned at the second valve position, the refrigeration working medium exit of the compressor is connected with the internal heat exchanger and the refrigeration working medium entrance thereof is connected with the external heat exchanger which is internally filled with a heat storage agent. The heat pump circulating system and the method thereof adopt water, especially tap water, as a heat source with low cost and high heat exchange efficiency so as to be capable of improving the circulating heat efficiency of the heat pump.

Description

technical field [0001] The invention relates to a heat pump circulation system and method, in particular to a heat pump circulation system and method using tap water as a heat source. Background technique [0002] In the urban water supply system, the water that has been treated by the water plant and reaches the standard is usually sent to the water use unit through the water supply pipeline, such as a living quarter, a water use factory or a water garden unit, etc. Reach each household or other water terminals. In the above-mentioned water supply system, the temperature of the tap water sent to the water terminal is usually above 10 degrees Celsius. Even in winter in the north, the temperature will not be lower than 5 degrees Celsius due to the antifreeze measures taken for water pipes. As far as general water consumption is concerned, in most cases, users are not sensitive to the temperature of tap water. For example, in winter and summer, the temperature of tap water ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B13/00F25B30/02
Inventor 苏庆泉
Owner 苏庆泉
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