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Waste heat comprehensive utilization system

A waste heat recovery and waste water technology, which is applied in the direction of fluid heaters, lighting and heating equipment, etc., can solve the problems of environmental thermal pollution and waste heat not being utilized

Inactive Publication Date: 2015-10-28
XINCHANG FOCHENG REFRIGERATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These waste heat not only cannot be used, but also cause thermal pollution to the environment.

Method used

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  • Waste heat comprehensive utilization system
  • Waste heat comprehensive utilization system
  • Waste heat comprehensive utilization system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Cooling and heating hot water operation mode: after the waste water feeds at 50°C-70°C and the cold water feeds at 15°C and passes through the water / water heat exchanger 160 for primary heat recovery, the water temperature in the waste water tank drops to between 30°C-40°C, while the cold water The temperature rises to 25°C-30°C, and then the waste water flows into the evaporator 130 for secondary heat recovery, the temperature of the heat recovered waste water drops to about 12°C, and the 12°C waste water from the evaporator 130 passes through the third three-way valve 330, through the one-way valve 340, it flows into the end 500 of the air conditioner for refrigeration.

[0046] The cold water heated to 25°C-30°C passes through the thermostatic control valve 350 and then flows into the condenser 150 for secondary heating. The single-chip microcomputer control unit 300 detects the water temperature of the hot water tank in real time, calculates the opening degree of th...

Embodiment 2

[0048]Working mode of heating and hot water production in winter: the waste hot water at 50°C -70°C from the waste water pool passes through the first three-way valve 310 and enters the air conditioner end 500 to realize the heating function, and the waste water flowing out of the air conditioner end 500 passes through the second The three-way valve 320, through the first heat source circulation pump 411 and / or the second heat source circulation pump 412, realizes the function of two-stage heat recovery to produce hot water; The water heat exchanger 160 performs primary heat exchange with the 5°C-10°C cold water from the water inlet solenoid valve 350, the water temperature of the waste water tank drops to 20°C-30°C, and the cold water temperature rises to 15°C-25°C. The waste water flowing out of the water / water heat exchanger 160 flows into the evaporator 130 for secondary heat recovery, the temperature of the waste water after the secondary heat recovery drops to about 8°C, ...

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Abstract

The invention relates to a waste heat comprehensive utilization system. The waste heat comprehensive utilization system is characterized in that an instant waste heat recovery and heating unit comprises a dual-system heat pump, a water inlet electromagnetic valve, a constant-temperature control valve and a water-water heat exchanger for primary heat recovery, wherein the dual-system heat pump is composed of a first compressor, a second compressor, a first throttling valve, a second throttling valve, an evaporator, a first gas-liquid separator, a second gas-liquid separator and a condenser; a cold water inlet pipeline of a cold water boost pump is connected with a cold water inlet of the water-water heat exchanger through the water inlet electromagnetic valve, and a water outlet of the water-water heat exchanger is connected with a water inlet of the condenser through the constant-temperature control valve. According to the waste heat comprehensive utilization system, large-temperature-difference waste heat recovery is achieved through a multi-stage heat recovery technology, the problems that in the industry, the waste water discharge quality is large on each day, the temperature of waste water is unstable, and the waste water can not be stored for a long time are solved, and therefore most heat of the waste water can be recycled.

Description

technical field [0001] The invention relates to a waste heat comprehensive utilization system. Background technique [0002] Printing and dyeing, electronics, food processing, chemical industry, metallurgy and other enterprises need to supply a large amount of hot water in the production process, and at the same time generate more waste water (30-70 ℃), large and medium-sized collective bathrooms also have a large amount of waste heat from bathing Water (around 30°C) is produced. These waste hot water discharged from modern industrial production and daily life usually cannot be reused after generation, but are directly discharged into the environment, or discharged into the environment after corresponding required purification treatment. These waste heat not only cannot be used, but also cause thermal pollution to the environment. Contents of the invention [0003] Aiming at the problems existing in the prior art, the object of the present invention is to provide a techni...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24H4/02F24H9/20
Inventor 章聚园
Owner XINCHANG FOCHENG REFRIGERATION