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Control method of heat pump system

A control method and technology for a heat pump system, applied in the field of heat pump systems, can solve the problems of easy frost formation in winter, poor low temperature performance, etc., and achieve the effects of accuracy and real-time performance, stable operation state, and realization of utilization.

Inactive Publication Date: 2019-08-02
浙江碳银数智绿能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the air source heat pump itself also has problems such as poor low temperature performance and easy frost in winter.

Method used

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  • Control method of heat pump system
  • Control method of heat pump system
  • Control method of heat pump system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A control method for a heat pump system, such as figure 1 As shown, including PV / T system, heating system, power supply system and control system.

[0030] The PV / T system includes a PV / T heat collector, a compressor, a condenser, a liquid receiver, a dry filter, an expansion valve, a heat storage tank, a drain valve, and a pressure protector. Refrigerant is selected as the circulating working medium of the system. The working medium absorbs solar energy and heat in the air and evaporates in the PV / T heat collector, and then enters the compressor to become high-temperature and high-pressure steam, and then enters the condensation pipe to condense Heat release, the condensing pipe is set inside the heat storage water tank, the heat released by the condensing pipe heats the water in the water tank, and finally the working fluid that turns back into liquid flows through the liquid storage, dry filter, expansion valve, throttling drop Return to the PV / T heat collector afte...

Embodiment 2

[0037] A PV / T collector, such as figure 2As shown, it includes glass cover plate, air channel, EVA, photovoltaic cell, TPT back plate, new controllable phase change heat storage plate, evaporation tube, aluminum alloy frame arranged in sequence from top to bottom, and sunlight shines on the glass cover plate In the above, the photovoltaic cell adopts a monocrystalline silicon cell, which is converted into electrical energy by absorbing sunlight, and then converts the electrical energy into thermal energy and stores it in a new type of controllable phase change heat storage plate, and the new controllable phase change heat storage plate and evaporation The combination of tubes adopts the tube-sheet type, and then the heat of the new controllable phase-change heat storage plate is transferred to the evaporation tube through switch control. The evaporation tube can absorb both solar heat and heat in the air, and then transfer it to the evaporation tube The refrigerant working me...

Embodiment 3

[0039] The measuring point layout of the photovoltaic photothermal composite air source heat pump system of the present invention is as follows: image 3 As shown, the control system includes an intelligent controller, PV / T heat collector inlet temperature T1 and pressure P1, compressor inlet temperature T2 and pressure P2, outlet temperature T3 and pressure P3, condensing coil outlet temperature T4 and pressure P4 , the outlet temperature T5 and pressure P5 of the heat storage water tank, the inlet temperature T6 and pressure P6, and the temperature of hot water in the heat storage water tank T7.

[0040] According to the weather conditions and collected data, the following heat collection strategies are adopted:

[0041] 1) When the solar radiation is strong and the temperature T1 of the refrigerant in the condensation section is higher than the temperature T7 of the cooling water in the water tank, the system operates in the mode of solar photovoltaic-evaporation pipe-conde...

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Abstract

The invention provides a control method of a heat pump system. The control method comprises a PV / T system, a heating system, a power supply system and a control system, wherein the PV / T system comprises a PV collector, a compressor, a condenser, a reservoir, a drying filter, an expansion valve, a heat storage water storage tank, a water escape valve and a pressure protector. According to the novelcontrollable phase-change heat storage material provided by the invention, the heat release process is controllable, small heat loss in storage, controllable in phase change temperature, high in latent heat storage capacity, non-toxic, non-corrosive, and harmless to the environment and stable in chemical and thermal properties.

Description

technical field [0001] The invention relates to the field of heat pump systems, in particular to a control method for the heat pump system. Background technique [0002] With the rapid development of the world economy, the pressure on energy demand is increasing day by day, and human beings are worried about the deterioration of the living environment and energy security, making full use of renewable energy and energy conservation a global consensus. In order to effectively alleviate the pressure of energy demand and reduce environmental pollution, countries around the world are vigorously advocating the development and utilization of renewable energy. A new era of power system is emerging, which takes new energy power generation as the main symbol and strives to realize the comprehensive and complementary utilization of multiple energy sources. [0003] Solar photovoltaic photothermal comprehensive utilization (PV / T) technology organically combines solar photovoltaic power...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24D11/02F24D19/10F24S20/40F24S60/10H02J7/35H02S40/38
CPCF24D11/0221F24D19/1045F24D2200/123F24D2200/14F24S20/40F24S60/10H02J7/35H02S40/38Y02B10/70Y02E10/40Y02E10/56Y02E70/30
Inventor 晏禾勉张来甲
Owner 浙江碳银数智绿能科技有限公司
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