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Vacuum phase-transition heat transfer solar flat-plate heat-collecting system and working medium used for same

A technology of solar flat panels and flat panel heat collectors, applied in the field of solar energy utilization, can solve problems such as difficult promotion, high cost of heat pipe type solar flat panel heat collectors, inability to separate installation, etc. simple effect

Inactive Publication Date: 2011-04-13
SICHUAN TIANYI SOLAR ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a vacuum phase change heat transfer type solar panel heat collection system and the working medium used in the system. Due to the problems of high cost, inability to install separately, and difficult promotion of flat-plate collectors, an innovative device is proposed, that is, a solar flat-plate heat collection system with separate installation of heat collector and heat accumulator, and the use of vacuum phase change heat transfer of working fluid. , this kind of system has high efficiency and low cost, and it can still be used normally below 0°C

Method used

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  • Vacuum phase-transition heat transfer solar flat-plate heat-collecting system and working medium used for same
  • Vacuum phase-transition heat transfer solar flat-plate heat-collecting system and working medium used for same

Examples

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Embodiment 1

[0023] see figure 1 As shown, the vacuum phase change heat transfer type solar panel heat collection system of this embodiment includes a plate collector frame 1 , a gas-liquid separator 4 , a heat accumulator 8 , a vacuum evaporator 2 , and a condenser 7 . The vacuum evaporator 2 is placed inside the flat plate collector frame 1 and penetrates the flat plate heat collector frame 1 to form two connection ends; the condenser 7 is placed inside the heat accumulator 8 and penetrates the heat accumulator 8 to form two connections end. One end of the vacuum evaporator 2 is connected to the gas-liquid separator 4, the gas outlet of the gas-liquid separator 4 is connected to one end of the condenser 7 through the vapor rising pipe 6, and the liquid outlet of the liquid separator 4 is connected to the liquid supply pipe 3 of the evaporator It is connected with the other end of the vacuum evaporator 2, and the other end of the condenser 7 is connected with the gas-liquid separator 4 t...

Embodiment 2

[0029] A working fluid specially used in the vacuum phase change heat transfer type solar panel heat collection system described in Example 1, the working fluid is a multi-component composite working fluid.

[0030] The multi-component composite working medium is one or several kinds of liquid-gas phase change substances.

[0031] The liquid-gas phase change substance is one or more of water, acetone, chloroform, methanol, and ethanol.

example 1

[0032] Example 1, water is used as the working fluid, the vacuum degree is 85.59kPa, and the evaporation temperature of the working fluid after the system is installed is 55°C.

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Abstract

The invention discloses a vacuum phase-transition heat transfer solar flat-plate heat-collecting system and a working medium used for the same. In the vacuum phase-transition heat transfer solar flat-plate heat-collecting system, a vacuum evaporator is arranged in the frame body of a flat-plate heat collector and passes through the frame body of the flat-plate heat collector to form two connecting ends; a condenser is arranged in a heat accumulator and passes through the heat accumulator to form two connecting ends; one end of the vacuum evaporator is communicated with a gas-liquid separator; a gas outlet of the gas-liquid separator is communicated with one end of the condenser by a steam ascending pipe; a liquid outlet of the gas-liquid separator is communicated with the other end of the vacuum evaporator by an evaporator feed pipe; and the other end of the condenser is communicated with the gas-liquid separator by a condensate return pipe. The vacuum phase-transition heat transfer solar flat-plate heat-collecting system can be used normally at the temperature of below 0 DEG C to realize long-distance heat transfer, is easy to popularize and use, can be widely applied to solar heat supply systems, and is particularly suitable for integrated heat supply systems of solar buildings.

Description

technical field [0001] The invention relates to the field of solar energy utilization, in particular to a vacuum phase change heat transfer type solar panel heat collection system and a working fluid used in the system. Background technique [0002] Solar energy is recognized as a sustainable and environmentally friendly energy source. With the continuous development of science and technology, people's use of solar energy has gradually developed from passive and semi-active to active development and utilization. How to effectively use solar energy to make up for the shortage of limited energy sources such as coal, oil, and natural gas is a hot topic in the contemporary scientific community. So far, there are two main types of solar panel collectors used by people. The first is a conventional flat plate collector, which has been commercially produced and is mainly used as a heat collecting component in a solar water heating system. It is characterized in that it is a tube-p...

Claims

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Application Information

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IPC IPC(8): F24J2/32F24J2/34F24J2/46C09K5/04F24S10/95
CPCY02B10/22Y02E10/44Y02B10/20
Inventor 李建明陈志高宇
Owner SICHUAN TIANYI SOLAR ENERGY TECH
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