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Water working medium injection type heat pump system realizing cascaded recovery of waste heat and working method thereof

A jet heat pump and waste heat recovery technology, applied in heat recovery systems, heat pumps, machines that use waste heat, etc., can solve the problem of narrowing the temperature range of waste heat recovered by hydraulic heat pumps, reducing the amount of waste heat recovered by hydraulic heat pumps, and reducing water consumption. The economy and practicability of the working fluid heat pump are solved to achieve the effect of expanding the available temperature range, ensuring normal and stable operation, and avoiding low work efficiency.

Active Publication Date: 2019-08-30
上海诺通新能源科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The heat pump experiment of water working medium shows that as the evaporation temperature and pressure decrease, the vacuum degree that the compressor in the system needs to provide is further increased, which leads to a sharp decline in the performance of the system, and also reduces the practicability and economy of the heat pump system
Therefore, in order to ensure the performance of the hydraulic heat pump system, it is necessary to reduce the vacuum in the evaporator and increase the corresponding evaporation temperature. The increase in the evaporation temperature requires a higher temperature waste heat source, thereby reducing the available temperature of the waste heat source. The lower temperature waste heat source cannot be recycled, which narrows the temperature range of waste heat recovered by hydraulic heat pumps, and also reduces the amount of waste heat that can be recovered by hydraulic heat pumps, thereby reducing the economy of hydraulic heat pumps and practicality

Method used

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  • Water working medium injection type heat pump system realizing cascaded recovery of waste heat and working method thereof
  • Water working medium injection type heat pump system realizing cascaded recovery of waste heat and working method thereof

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Embodiment Construction

[0042] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0043] A preferred example of the present invention provides a cascaded waste heat recovery water jet heat pump system. This system can not only use natural working fluid water as the working medium of the heat pump system, but also realize cascade recovery and utilization of waste heat resources, effectively reducing the The available temperature of waste heat resources is increased, the temperature range of effective use of waste heat resources is expanded, the waste heat that can be recovered by the h...

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Abstract

The invention provides a water working medium injection type heat pump system realizing cascaded recovery of waste heat and a working method thereof. The heat pump system comprises a high-pressure water vapor generation system, a low-pressure water vapor generation system, a water vapor injection system and a water vapor compression heat supply system, wherein the high-pressure water vapor generation system and the low-pressure water vapor generation system are connected through a waste heat connection pipe (3); the high-pressure water vapor generation system and the water vapor injection system are connected through a high-pressure gas storage tank (28); the low-pressure water vapor generation system and the water vapor injection system are connected through a low-pressure gas storage tank (34); the water vapor injection system and the water vapor compression heat supply system are connected through the high-pressure gas storage tank (28) and a medium-pressure gas storage tank (15); and the high-pressure water vapor generation system and the water vapor compression heat supply system are connected through the high-pressure gas storage tank (28).

Description

technical field [0001] The invention relates to the field of heat pump systems, in particular to a hydraulic medium injection heat pump system for cascaded waste heat recovery. Background technique [0002] The recovery and utilization of low-grade waste heat refers to the high-grade reuse of low-grade waste heat in the production and living process, thereby effectively reducing the consumption of primary energy and improving the efficiency of primary energy utilization. According to the statistics of the International Energy Agency, industry is the largest area of ​​heat energy consumption, accounting for about 46% of the world's total heat energy consumption; according to my country's National Statistical Yearbook, in recent years, my country's annual industrial energy consumption has exceeded 2.9 billion tons of standard coal. Due to the low efficiency of energy utilization, the industry produces a large amount of low-grade waste heat, accounting for more than 14% of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B30/02F25B27/02F25B41/00F25B41/40
CPCF25B30/02F25B27/02F25B41/40Y02B30/52Y02A30/274
Inventor 胡斌吴迪姜佳彤王如竹
Owner 上海诺通新能源科技有限公司
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