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Fuel-driven air-cooled compression heat pump system based on carbon dioxide working fluid

A compression heat pump and carbon dioxide technology, which is applied in the fields of domestic hot water, heating and air conditioning, can solve the problems of low heating efficiency, achieve the effects of large cooling capacity, improve primary energy utilization efficiency and convenient application

Inactive Publication Date: 2017-10-13
TIANJIN CHENGJIAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most of the working fluids used in the system are synthetic working fluids such as R410A and R134a, and the heating efficiency is low when producing hot water with a temperature exceeding 60°C

Method used

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  • Fuel-driven air-cooled compression heat pump system based on carbon dioxide working fluid
  • Fuel-driven air-cooled compression heat pump system based on carbon dioxide working fluid

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Embodiment Construction

[0011] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0012] The fuel-driven air-cooled compression heat pump system based on carbon dioxide working medium of the present invention includes an engine 13 and a compressor 1 connected to the engine 13, the circulating working medium of the compressor 1 adopts carbon dioxide, and the The gas outlet of the compressor 1 is sequentially connected to the oil separator 2 and the first valve port of the four-way reversing valve 3 through the first pipeline, and the second valve port of the four-way reversing valve 3 is connected to the plate type through the second pipeline. The first gas port of the heat exchanger 11, the second gas port of the plate heat exchanger 11 is connected to the first gas port of the fin heat exchanger 10 through a third pipeline, and the fin heat exchanger 10 The second...

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Abstract

The invention discloses a fuel-driven air-cooled compression heat pump system based on carbon dioxide working fluid. It includes an engine and a compressor. The working medium of the compressor is carbon dioxide. The valve and the first gas interface connected to the plate heat exchanger, the second gas interface of the plate heat exchanger is connected to the first gas interface of the fin heat exchanger through the third pipeline, and the second gas interface of the fin heat exchanger is passed The fourth pipeline is sequentially connected to the first valve, expansion valve, sight glass, solenoid valve, filter, carbon dioxide liquid storage tank, second valve, shell and tube heat exchanger, four-way reversing valve, gas-liquid separator and The liquid inlet of the compressor; the water inlet end of the domestic water circulation pipeline is connected to the domestic water tank and the other end is connected to the circulating water pump, the third valve, the heat recovery heat exchanger, the flue gas heat exchanger and the fourth valve in sequence. Adopting the device has higher refrigeration and heating energy efficiency coefficients.

Description

technical field [0001] The present invention relates to the technical fields of heat supply, air conditioning, and domestic hot water supply, in particular to an air-cooled compression heat pump that uses fuel (natural gas, diesel, gasoline, etc., liquid fuel) as energy, a fuel engine as a driving device, and carbon dioxide as a working medium system. Background technique [0002] In recent years, with the worsening of environmental pollution in our country, the pollution caused by coal-fired heat source devices in heating and hot water supply systems has attracted great attention from the government and industry experts. In order to control the pollution caused by small and medium-sized coal-fired boilers, the government has actively promoted the transformation of coal-fired boilers into gas-fired boilers. However, natural gas is a high-quality primary energy source, and the combustion efficiency of the direct-fired gas-fired boiler is only 90%. Therefore, how to efficien...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B30/02F25B29/00F25B41/04F25B41/06F25B41/20F25B41/31
CPCF25B29/003F25B31/00F25B2309/06
Inventor 董付江刘凤国张蕊
Owner TIANJIN CHENGJIAN UNIV
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