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Carbon dioxide two-stage combined cooling and heating system

A carbon dioxide, cooling and heating technology, applied in refrigerators, refrigeration and liquefaction, lighting and heating equipment, etc., can solve the problems of ineffective use of condensation heat, low evaporation temperature, energy loss, etc., and achieve superior thermodynamic performance, The effect of increasing return air pressure and improving efficiency

Active Publication Date: 2017-10-10
黑龙江爱科德科技有限公司
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  • Application Information

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Problems solved by technology

[0002] The purpose of adopting the two-stage form in the traditional refrigeration system is generally to obtain a lower evaporation temperature. In the cycle process, a large amount of condensation heat is not effectively utilized. At the same time, there will be a part of energy loss during the throttling process, reducing the efficiency of the whole system

Method used

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  • Carbon dioxide two-stage combined cooling and heating system

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Embodiment Construction

[0014] The present invention will be further described below in conjunction with drawings and implementation.

[0015] Such as figure 1 As shown, the system includes a carbon dioxide subcritical compressor, a carbon dioxide transcritical compressor, a first oil separator, a first condenser, a first expander, a second oil separator, a second condenser, a second expander, A maintenance system, a liquid storage device, a first gas-liquid separator and a second gas-liquid separator; wherein the maintenance system is connected to the liquid storage device, and the outlet of the carbon dioxide subcritical compressor and the outlet of the liquid storage device are connected in parallel to the inlet of the carbon dioxide transcritical compressor, and the carbon dioxide The outlet of the transcritical compressor is connected to the first oil separator, the first condenser and the first expander in sequence, the first expander is connected to the inlet of the subcooler, the outlet of th...

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Abstract

A carbon dioxide two-stage combined cooling and heating system, the system includes a carbon dioxide subcritical compressor, a carbon dioxide transcritical compressor, a first oil separator, a first condenser, a first expander, a second oil separator, a second Condenser, second expander, maintenance system, liquid receiver, first gas-liquid separator and second gas-liquid separator; beneficial effects of the present invention: large cooling capacity per unit volume, superior thermodynamic performance; expander system The refrigerant R134a in is a widely popular medium and low temperature environmentally friendly refrigerant. The system can recover all condensation heat and produce high temperature hot water. Utilize the energy lost by throttling and reducing pressure, increase the return pressure of carbon dioxide, and greatly improve the efficiency of the entire system. The condensation heat of the expander system in the system is also fully utilized to increase the superheat of the carbon dioxide return gas.

Description

technical field [0001] The invention belongs to the technical field of refrigeration systems, and in particular relates to a carbon dioxide two-stage combined cooling and heating system. Background technique [0002] The purpose of adopting the two-stage form in the traditional refrigeration system is generally to obtain a lower evaporation temperature. A large amount of condensation heat is not effectively used in the cycle process. At the same time, there will be some energy loss during the throttling process, which reduces the efficiency of the entire system. Contents of the invention [0003] The object of the present invention is to overcome the above disadvantages and provide a carbon dioxide two-stage combined cooling and heating system. [0004] The technical scheme of the present invention is as follows: the system includes a carbon dioxide subcritical compressor, a carbon dioxide transcritical compressor, a first oil separator, a first condenser, a first expande...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B9/06
Inventor 韩兴旺李丽娜
Owner 黑龙江爱科德科技有限公司
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