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Instant waste heat recycling heating unit and water outflow thermostatic control method thereof

A waste heat recovery, instant heating technology, applied in machines, fluid heaters, lighting and heating equipment using waste heat, etc., can solve the problem that waste water cannot be stored for a long time, waste heat cannot be fully recycled, waste hot water. The problem of large daily emissions, etc., to achieve the effect of efficient operation, increase the intake air temperature, and increase the heating capacity

Active Publication Date: 2013-10-09
JIANGSU TENESUN ELECTRICAL APPLIANCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an instant waste heat recovery heating unit for the constant temperature control method of the outlet water, which is used to solve the problems of relatively large daily discharge of waste water in industrial enterprises, unstable waste water temperature, and impossibility of waste water for a long time Storage, the technical problem that the heat of waste water cannot be fully recycled

Method used

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  • Instant waste heat recycling heating unit and water outflow thermostatic control method thereof
  • Instant waste heat recycling heating unit and water outflow thermostatic control method thereof
  • Instant waste heat recycling heating unit and water outflow thermostatic control method thereof

Examples

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Effect test

Embodiment 1

[0087] Operation mode of refrigeration and hot water production: wastewater influent 50℃-70℃ and cold water influent 15℃ after primary heat recovery through water / water heat exchanger 160, the water temperature of the wastewater tank drops to between 30℃-40℃, and 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 recovery waste water drops to about 12°C. The 12°C waste water from the evaporator 130 passes through the third three-way valve 330. Flow into the air conditioning terminal 500 through the one-way valve 340 for cooling. The cold water heated to 25°C-30°C passes through the thermostatic control valve 350 and flows into the condenser 150 for secondary heating. The single-chip control unit 300 detects the water temperature of the hot water tank in real time, calculates the opening degree of the thermostatic control valve according to the difference between the water...

Embodiment 2

[0089] Winter heating and hot water working mode: 50℃-70℃ waste hot water from the waste water tank, through the first three-way valve 310, enters the air conditioning terminal 500 for heating function, and the waste water flowing out of the air conditioning terminal 500 passes through the second The three-way valve 320, through the first heat source circulating pump 411 and / or the second heat source circulating pump 412, realizes the function of two-stage heat recovery to produce hot water; the water temperature of the water tank at the end of the air conditioner is between 35°C and 40°C, and the water enters / The water heat exchanger 160 performs primary heat exchange with 5°C-10°C cold water from the water inlet solenoid valve 350, the water temperature of the waste water tank drops to between 20°C and 30°C, and the cold water temperature rises to 15°C-25°C. The wastewater from the water / water heat exchanger 160 flows into the evaporator 130 for secondary heat recovery. After...

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Abstract

The invention discloses an instant waste heat recycling heating unit and a water outflow thermostatic control method of the heating unit, and relates to a fluid heater using a heat pump and a control method of the fluid heater, in particular to the instant waste heat recycling heating unit and the water outflow thermostatic control method of the heating unit which are used for a waste heat comprehensive utilization system. The instant water heat recycling heating unit comprises a double-system heat pump, a water inlet electromagnetic valve, a thermostatic control valve and a water / water heat exchanger used for primary heat recovery, wherein the double-system heat pump comprises 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. By means of steam recycling with heat, the fact that refrigerants before throttling are supercooled is guaranteed, the suction temperature of a product is increased, heating capacity of the product is improved, and damage caused by liquid impact to the compressors is prevented. According to the relation of water tank water temperature, waste water temperature and set water temperature, due to the fact that the thermostatic control valve carries out a PID algorithm, openness of the thermostatic control valve is controlled, water flow is adjusted, and therefore the water tank water temperature keeps constant when the waste water temperature fluctuates.

Description

Technical field [0001] The invention relates to a fluid heater using a heat pump and a control method thereof, in particular to an instant waste heat recovery heating unit used in a waste heat comprehensive utilization system and an outlet constant temperature control method thereof. Background technique [0002] Printing and dyeing, electronics, food processing, chemical, metallurgical and other enterprises all need to supply a lot of hot water in the production process, and at the same time produce more waste hot water (30~70℃). Large and medium-sized collective bathrooms also have a lot of waste heat from bathing. Water (around 30°C) is produced. The waste hot water discharged from modern industrial production and life is usually not reused after production, but is directly discharged into the environment or discharged into the environment after correspondingly required purification treatment. This waste heat is not only unused, but also causes thermal pollution to the environ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B27/02F25B43/00F25B49/02F24H9/20
CPCY02A30/274
Inventor 王玉军杨奕刘军许春林李鲲
Owner JIANGSU TENESUN ELECTRICAL APPLIANCE
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