Environment-friendly energy-saving heat supply method

An environmentally friendly, hot water technology, used in solar thermal power generation, heat pumps, heating devices, etc.

Inactive Publication Date: 2010-09-22
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009]3. In cold regions, the CO2 heat pump system can maintain a high heat supply in a low temperature environment, greatly saving auxiliary heating equipment The energy consumed, while the use of traditional heat pumps in low temperature environments is greatly limited

Method used

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Examples

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Effect test

Embodiment 1

[0030] Example 1

[0031] Transcritical carbon dioxide heat pump system: throttling valve 1, evaporator 2, compressor 3 and gas cooler 4 connected in sequence by pipelines. Preferably, the evaporator is also equipped with an electric heating defrosting device. The working fluid circulating in the transcritical carbon dioxide heat pump system is carbon dioxide.

[0032] Hot water circulation system: hot water tank 5, pump A6, check valve A7, coil heat exchanger A8, water inlet three-way valve A9 and outlet water shut-off valve 10 connected in sequence by pipelines.

[0033] Solar heating system: pump B11, check valve B12, solar heat collector 13, three-way valve B14, coil heat exchanger B15, three-way valve C16 connected in sequence with pipelines, and parallel with coil heat exchanger B15 Coil heat exchanger C17. The working fluid circulating in the solar heating system is ethylene glycol. Preferably, a temperature difference controller is installed at the inlet and outlet...

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PUM

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Abstract

The invention relates to the technical field, in which, solar energy and other natural resources are utilized to heat. The invention provides a stable heat-supply method characterized by environmental protection and energy preservation. The method uses a transcritical carbon dioxide heat pump system to assist a solar heating system for heat supply; besides, the heat pump system is connected with the solar heating system. By combining the transcritical carbon dioxide heat pump system with the solar heating technique, the method of the invention provides four modes of heating water, which can meet the requirements on hot water supply in different climatic regions. Hot water at the temperature of ranging from 50 DEG C to 90 DEG C can be obtained even in frigid regions, which ensures the stable running of transcritical carbon dioxide heat pump system at low temperature. More importantly, the method of the invention adopts natural carbon dioxide and renewable solar energy, thus reaching the effect of energy preservation and environment protection.

Description

technical field [0001] The invention relates to the technical field of heat supply methods using natural resources such as solar energy. Background technique [0002] At present, environmental and energy consumption issues are important factors restricting my country's economic and social development, and environmental issues such as greenhouse effect and ozone layer destruction have also attracted more and more attention. [0003] Hot water is closely related to our life. Due to the limitation of energy and environmental protection, there are some deficiencies in traditional hot water supply. At present, there are three types of traditional water heaters on the market: coal-fired, oil-fired, and gas-fired water heaters, electric water heaters, and solar water heaters. Coal-fired hot water boilers have been banned by the state in many large and medium-sized cities due to insufficient coal combustion and serious air pollution. Gas water heaters need to discharge a large amo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B30/02F24J2/00F24J2/04
CPCY02E10/44
Inventor 吕静周传煜王伟峰杨大章
Owner UNIV OF SHANGHAI FOR SCI & TECH
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