Direct-expansion solar heat pump water heating system

A solar heat pump and hot water system technology, applied in solar heating systems, solar thermal energy, solar thermal power generation, etc., can solve problems such as long connecting pipelines, underutilized energy, and low heat exchange efficiency

Inactive Publication Date: 2012-08-22
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the disadvantage is that the surface of the submerged condenser heat exchanger is easy to be corroded, it is inconvenient to install and clean, and the heat exchange efficiency is not high. At the same time, the connecting pipeline is long, and if the refrigerant leaks, it will pollute the water quality; the evaporator is a series

Method used

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  • Direct-expansion solar heat pump water heating system
  • Direct-expansion solar heat pump water heating system
  • Direct-expansion solar heat pump water heating system

Examples

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Embodiment

[0036] figure 1 Schematic diagram of the direct expansion solar heat pump water heating system.

[0037] Such as figure 1 As shown, a direct expansion solar heat pump water heating system includes: a bare plate heat collector 1, a heat collector 2 with a glass cover, a gas-liquid separator 3, a compressor 4, and a plate heat exchanger 5 ( condenser), liquid storage tank 6, thermal expansion valve 7, circulating water pump 8, heat storage tank 9, controller 10, temperature sensor 11 and temperature sensor 12.

[0038] The direct expansion solar heat pump water heating system has two cycles of refrigerant cycle and water cycle, as well as a control circuit.

[0039] Among them, the refrigerant cycle: consists of a bare plate collector 1, a collector with a glass cover 2, a gas-liquid separator 3, a compressor 4, a plate heat exchanger 5, a liquid storage tank 6, and a thermal expansion valve 7 , solenoid valve C23, solenoid valve D24, solenoid valve E25, solenoid valve F26, s...

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Abstract

The invention discloses a heat absorption core of a collector used for a solar heat pump water heating system, a naked plate type collector, a collector with a glass cover plate as well as a direct-expansion solar heat pump water heating system. The naked plate type collector and collector with the glass cover plate are connected through an electromagnetic valve and a refrigerant copper pipe and, a PLC (Programmable Logic Controller) controls the open and close of the electromagnetic valve according to different external conditions so as to realize the separated operation and series operation of the naked plate type collector and the collector with the glass cover plate. Refrigerant gas through evaporation and compression enters a plate-type heat exchanger so as to carry out countercurrent flow heat exchange with circulating water, hot water temperature is fed back to a controller through a temperature sensor, and the controller controls the open and stop of a compressor. With the structure, the system has the advantages of high energy efficiency ratio, good environmental adaptation, simple structure and the like and is environment-friendly and energy-saving.

Description

technical field [0001] The invention relates to a solar water heating device, in particular to a direct expansion solar heat pump water heating system, which belongs to the technical field of heating, air conditioning and domestic hot water equipment. Background technique [0002] As the largest renewable energy source on earth, solar energy has gained more utilization and development in recent years. The direct expansion solar heat pump system (DX-SAHP) uses the solar collector plate as the evaporator of the heat pump system. The refrigerant is filled into the heat collector plate and absorbs solar energy and heat from the surrounding environment when it flows through the heat collector / evaporator. The heat of condensation is then transferred to the heated substance via a heat pump cycle. Compared with the non-direct expansion solar heat pump, the direct expansion solar heat pump saves the heat exchange equipment between the heat collection cycle and the heat pump cycle in...

Claims

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Application Information

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IPC IPC(8): F24J2/46F24J2/48F24J2/00F24J2/05F24J2/26F24J2/40F24S10/40F24S10/75
CPCF24S10/753Y02E10/44
Inventor 关欣张凇源王殿华郭志波
Owner UNIV OF SHANGHAI FOR SCI & TECH
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