Transcritical CO2 energy-saving heat pump system of solar supplementary heat source

A carbon dioxide and auxiliary heat source technology, applied in the field of heat exchange, can solve problems such as environmental pollution and low energy utilization efficiency, and achieve the effects of low investment cost, low maintenance and cost reduction.

Inactive Publication Date: 2009-11-18
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] The primary energy structure dominated by coal not only has low energy utilization efficiency, but also

Method used

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  • Transcritical CO2 energy-saving heat pump system of solar supplementary heat source
  • Transcritical CO2 energy-saving heat pump system of solar supplementary heat source
  • Transcritical CO2 energy-saving heat pump system of solar supplementary heat source

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Embodiment Construction

[0015] see figure 1 , the present invention comprises a solar heat collector 1, a first expansion compressor 2, a second expansion compressor 9, an air receiver 4, a gas-liquid separator 5, a gas cooler 6, an evaporator 7, and a three-way valve 8 , solenoid valves 11, 12. and two motors M that are connected to the compressors of the first and second expansion compressors respectively. The above-mentioned components are connected through pipelines to form a solar energy auxiliary heat source carbon dioxide transcritical energy-saving heat pump system. The system uses carbon dioxide as the working medium. The solar collector 1 is generally placed on the roof, and the CO 2 After being heated by the solar heat collector, the steam enters the inlet of the expander 2-1 in the first expansion compressor 2 through a pipeline, drives the expander to do work externally, and enters the gas receiver 4 through the pipeline, and is connected with the compressor 2 in the gas receiver. -2 o...

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Abstract

The invention discloses a transcritical CO2 energy-saving heat pump system of solar supplementary heat source, solving the cyclic utilization problem of heat energy. The invention has the technical scheme that the system is composed of a solar heat collection supplementary part and a transcritical CO2 heat pump, two systems are connected by two expanding compressors, and actuating media of the whole system all adopt CO2. The invention has the following advantages that: 1. the invention can save energy; the invention effectively uses solar to be system drive energy, thus greatly improving COP value for system operation, and performing the function of energy saving; 2. the invention is environment-friendly; the refrigeration work media of the whole system all adopt CO2, thus producing no environment pollution; and 3. the invention has favorable economical efficiency; the invention has small cost for later maintenance and investment by once investment. The invention can be widely used for air conditioning, heating, refrigerating and other occasions.

Description

technical field [0001] The invention relates to a solar heat utilization technology, in particular to a heat pump system utilizing solar energy, and belongs to the technical field of heat exchange. Background technique [0002] The primary energy structure dominated by coal not only has low energy utilization efficiency, but also causes serious environmental pollution. SO 2 90% of emissions and NO x 60% of emissions come from burning coal. The impact of serious environmental pollution on the ecological environment has threatened the sustainable development of economy and society. With the rapid development of the economy, energy consumption is increasing day by day, and energy has gradually become a "bottleneck" restricting social and economic development. According to research reports, my country's building energy consumption accounts for more than 25% of the total social energy consumption, and in building energy consumption, air-conditioning energy consumption accounts...

Claims

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Application Information

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IPC IPC(8): F25B30/06F25B41/04F24J2/00F25B27/00
CPCY02E10/40
Inventor 谢英柏孙刚磊刘春涛论立勇
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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