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System for partially recovering byproduct heat of refrigerating unit

A technology of refrigeration unit and recovery system, which is applied in the direction of refrigerator, heating and refrigeration combination, refrigeration and liquefaction, etc. It can solve the problems of lower energy efficiency ratio, low recovery efficiency, high operating cost, etc., and achieve lower operation and maintenance costs and longer service life , The effect of improving the energy efficiency ratio

Inactive Publication Date: 2011-08-10
吕瑞强
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] (1) The air conditioner often only considers the refrigeration process, and the heat generated by the condenser should be equipped with a heat dissipation system to dissipate heat
Especially the central air conditioner is often equipped with a huge cooling tower outdoors, and the operating cost is high when the temperature is high
[0004] (2) Heat pumps often only consider the heating process, and the by-product cooling is not easy to collect and utilize
Water source heat pumps are limited by environmental conditions. Air source heat pumps have low efficiency and are prone to frost in winter in the north. In most cases, the cost of heat source and cooling is high, which is not conducive to popularization.
[0005] (3) For pure cooling or heating equipment, if deep cooling or heating is to be realized, the energy efficiency ratio will inevitably decrease
[0006](4) At present, the technology of recovering waste heat from air conditioners to directly heat cold water has appeared on the market, but its recovery efficiency is low and energy cannot be fully utilized
[0009] As far as the applicant is aware, no such device or system has appeared and applied on the market

Method used

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  • System for partially recovering byproduct heat of refrigerating unit
  • System for partially recovering byproduct heat of refrigerating unit
  • System for partially recovering byproduct heat of refrigerating unit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Embodiment 1: Compression cycle refrigerating machine, the cooling tower is at a high position, and the cold water is recirculated by its own weight, and the by-product heat recovery system of the refrigerating unit. See attached figure 1 .

[0045] In the present invention, a heat exhaust pipeline 11 is provided from the condenser 3 of the refrigeration unit to the evaporator 7 of the heat pump unit, a warm water pipeline 12 is provided from the outlet of the heat pump unit evaporator 7 to the cooling tower 15, and a circulation pump 14 is arranged on the warm water pipeline 12; the cooling tower 15 to set the cooling water pipeline 13 to the condenser 3 of the refrigerating unit.

[0046] According to known principles:

[0047] The compressor of the refrigerating unit 1 pressurizes the gaseous refrigerant and sends it to the condenser 3 of the refrigerating unit. The refrigerant becomes liquid and releases heat in the refrigeration unit condensing coil. The conden...

Embodiment 2

[0050] Embodiment 2: Compression cycle refrigerating machine, the cooling tower is at a low position, and the cold water is reclaimed by the by-product heat part of the refrigerating unit pumped back. See attached figure 2 .

[0051] In this system, the circulation pump 14 is arranged on the cooling water pipeline 13 . Since the cooling tower is at a low position, the cooling water return pressure is low, so the return flow power is provided by the circulation pump 14 . In order to stabilize the circulation system pressure, a buffer tank 16 is provided at the outlet of the circulation pump.

[0052] The working principles of the refrigeration unit and the heat pump unit are the same as in Embodiment 1.

[0053] The working principle of the system is the same as in Embodiment 1.

Embodiment 3

[0054] Embodiment 3: Two refrigeration units connected in parallel and two cooling towers connected in parallel to the system for recovering part of the by-product heat of the refrigeration unit. See attached image 3 .

[0055] In this system, the working principles of the refrigeration unit and the heat pump unit are the same as in Embodiment 1.

[0056] The working principle of the system is the same as in Embodiment 1.

[0057] The difference is:

[0058] The intercooling fluid inlet 4 is divided into two, through which the intercooling fluid enters the evaporators 2 of the two refrigeration units respectively; flow out.

[0059] The cooling pipeline 11 is combined into one, and the hot water flows out from the condensers 3 of the two refrigeration units respectively, and enters the heat pump evaporator 7 through this; the cooling water pipeline 13 is divided into two, and the cooling water returns to the two refrigeration units through this. Condenser of the unit 3. ...

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Abstract

The invention relates to a system for partially recovering byproduct heat of a refrigerating unit, which comprises a refrigerating unit, a cooling tower and a heat pump unit, wherein the heat pump unit is connected in series between the refrigerating unit and the cooling tower, thereby achieving the purposes of reducing the workload of the cooling tower and partially recovering the byproduct heat of the refrigerating unit.

Description

technical field [0001] The invention relates to a system for recovering part of by-product heat of a refrigerating unit. The system consists of three parts: a refrigerating unit, a cooling tower and a heat pump unit. Specifically, a heat pump unit is connected in series between the refrigeration unit and the cooling tower to reduce the cooling tower’s workload, partially recover the by-product heat of the refrigeration unit, and produce industrial or domestic hot water. Background technique [0002] With the development of science and technology and economy, air conditioners and heat pumps have become more and more widely used, and the technology has become more and more mature. However, there are still some problems in market applications, such as: [0003] (1) The air conditioner often only considers the refrigeration process, and the heat generated by the condenser must be equipped with a heat dissipation system to dissipate the heat. Especially the central air condition...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B29/00
Inventor 吕瑞强
Owner 吕瑞强
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