Carbon dioxide cascade heat pump system

A carbon dioxide and heat pump system technology, applied in the field of heat pumps, can solve the problems of lack of secondary utilization of energy, inability to realize heating and ice production at the same time, and achieve the effect of secondary utilization

Inactive Publication Date: 2021-11-26
南京优辉新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies in the above-mentioned prior art, the present invention provides a carbon dioxide cascade heat pump system to solve the problem that the energy consumed in the circulation process

Method used

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  • Carbon dioxide cascade heat pump system
  • Carbon dioxide cascade heat pump system
  • Carbon dioxide cascade heat pump system

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Embodiment Construction

[0022] The specific implementation manners of the present invention will be clearly and completely described and illustrated below in conjunction with the accompanying drawings.

[0023] figure 1 It is a schematic diagram of the principle of the carbon dioxide cascade heat pump system of the present invention, figure 2 It is a schematic diagram of the flow of working fluid for heating and ice making in winter in the carbon dioxide cascade heat pump system of the present invention.

[0024] see figure 1 and figure 2 , The carbon dioxide cascade heat pump system of the present invention includes a common heat pump refrigeration cycle and a carbon dioxide heat pump refrigeration cycle. Wherein, the ordinary heat pump refrigeration cycle includes a first control valve 5, an ice maker 15, an evaporative condenser 7, and a hot and cold water heat exchanger 12 arranged in sequence, and the evaporative condenser 7 communicates with a second Two compressors 9, the second compress...

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Abstract

A carbon dioxide cascade heat pump system comprises a common heat pump refrigeration cycle and a carbon dioxide heat pump refrigeration cycle, wherein the common heat pump refrigeration cycle comprises a first control valve (5), an ice maker (15), an evaporative condenser (7) and a cold and hot water heat exchanger (12) which are sequentially arranged, the evaporative condenser (7) is communicated with a second compressor (9) through a reversing valve (8), the second compressor (9) is sequentially communicated with the cold and hot water heat exchanger (12) and the first control valve (5) through the reversing valve (8), and a second expansion valve (10) is arranged between the ice maker (15) and the cold and hot water heat exchanger (12). A refrigerant working medium of a high-temperature section enters the ice maker for primary heat exchange, enters the evaporative condenser after absorbing heat, absorbs heat of a low-temperature section for secondary heat exchange, enters the cold and hot water heat exchanger after being compressed by the reversing valve and the second compressor, and then returns to the second expansion valve to complete circulation of the high-temperature section, so that ice is made while heating is performed, and secondary utilization of energy is realized. The system is particularly suitable for extremely cold areas.

Description

technical field [0001] The invention belongs to the technical field of heat pumps, and in particular relates to a carbon dioxide cascade heat pump system, which is especially suitable for extremely cold regions. Background technique [0002] A heat pump is a device that can transfer heat energy from a low-level heat source to a high-level heat source. Usually, it first obtains low-grade heat energy from natural air, water or soil, and then provides high-grade heat energy that can be used by people. . [0003] The carbon dioxide cascade heat pump system can be applied to heating. It has two sets of circulation systems, one is the gas circulation of the low-temperature section through carbon dioxide, and the other is the liquid circulation of the high-temperature section through Freon, etc., and the two sets of circulation The system can be connected together through the evaporative condenser, and the effect of heat exchange and heating can be realized when the evaporative co...

Claims

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Application Information

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IPC IPC(8): F25B9/00F25B13/00F25B41/31F25B41/26F25B49/02
CPCF25B9/008F25B49/02F25B13/00
Inventor 刘勇
Owner 南京优辉新能源科技有限公司
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