Heat accumulating type anti-freeze solar heat collector system

A solar heat collector and thermal storage technology, which is applied in the field of antifreeze solar heat collector systems, can solve the problems of cracked pipelines, environmental pollution, and large initial investment in antifreeze systems, achieving wide application, reducing initial investment costs, The effect of eliminating environmental pollution problems

Inactive Publication Date: 2010-09-08
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of residual water easily remaining in the return and emptying system, resulting in cracking of valves and pipelines, the problem of freezing and cracking of ci

Method used

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  • Heat accumulating type anti-freeze solar heat collector system
  • Heat accumulating type anti-freeze solar heat collector system
  • Heat accumulating type anti-freeze solar heat collector system

Examples

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Example Embodiment

[0007] Specific implementation mode 1: Combination Figure 1-Figure 4 To illustrate this embodiment, the thermal storage type antifreeze solar collector system of this embodiment includes a solar collector 2, a first circulating water pump 4, a heat user 5, a first check valve 7, a fourth shut-off valve 13, and a circulation plant. The fluid outflow pipe 20 and the circulating working fluid inflow pipe 21. The outflow end of the heat user 5 is in communication with the solar collector 2 through the circulating working fluid outflow pipe 20. The first check valve 7 is installed on the circulating working fluid outflow pipe 20. The inflow end of the user 5 is in communication with the solar collector 2 through the circulating working fluid inflow pipe 21. The fourth shut-off valve 13 and the first circulating water pump 4 are sequentially installed on the circulating working fluid inflow pipe 21 along the flow direction of the circulating working fluid. The antifreeze solar colle...

Example Embodiment

[0008] Specific implementation manner two: combination Figure 1-Figure 4 To illustrate this embodiment, the antifreeze solar collector system of this embodiment also adds an expansion water tank 3 and a third communication pipe 27. The expansion water tank 3 communicates with the circulating working fluid inflow pipe 21 through the third communication pipe 27, and the first The three communicating pipe 27 is located on the circulating working fluid inflow pipe 21 between the temperature sensor 9 and the fourth shutoff valve 13. This setting plays the role of constant pressure supply. The other composition and connection relationship are the same as in the first embodiment.

[0009] The heat storage mode of the present invention (see figure 2 ): The first shut-off valve 10 is closed, the second shut-off valve 11, the third shut-off valve 12, and the fourth shut-off valve 13 are opened; the circulating working fluid flows out of the heat user 5 and enters the solar collector 2 t...

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Abstract

The invention discloses a heat accumulating type anti-freeze solar heat collector system, relates to an anti-freeze solar heat collector system and aims to solve the problems of frost cracking of valves and pipelines because moisture is easy to remain in a returning and emptying system, frost cracking of the pipelines due to the solidification of circulating working fluid at an extremely low temperature, high primary investment in the anti-freeze liquid system and easy environment pollution. A first cut-off valve and a temperature sensor of the system are sequentially arranged on a circulating working fluid inflow pipe along the flowing direction of the circulating working fluid; a second check valve and a second circulating water pump are sequentially arranged on a circulating working fluid return pipe along the flowing direction of the circulating working fluid; first and second communicating pipes are arranged on the two sides of the first cut-off valve in parallel; the upper ends of the first and second communicating pipes are communicated with the circulating working fluid inflow pipe; and the lower ends of the first and second communicating pipes are communicated with the inlet end and the outlet end of a heat accumulating tank made of a phase-change material respectively. The system reduces the primary investment in the anti-freeze liquid system of the heat collector, avoids pollution and solves the problems of frost cracking of the pipelines and the valves.

Description

technical field [0001] The invention relates to an antifreeze solar heat collector system. Background technique [0002] Due to the low outdoor temperature in winter in some areas of our country, when using solar energy, the problem of antifreezing of solar collectors must be considered. In the antifreeze design of solar collectors, national standards generally recommend emptying systems, drainage systems, antifreeze systems and circulating antifreeze systems. Due to improper installation and equipment problems, the drainage and emptying system can easily cause residual water in the system, resulting in cracking of valves and pipelines, affecting the safe operation of the system. The antifreeze system, especially the high-concentration antifreeze system, has a relatively large initial investment, and its price is about 300 to 400 yuan per square meter of solar collectors, and because the solar collectors are located outdoors, they are easily affected by external forces and ...

Claims

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Application Information

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IPC IPC(8): F24J2/34F24J2/46
CPCY02E10/40
Inventor 姜益强姚杨宋孟杰董建锴高强邵奕文
Owner HARBIN INST OF TECH
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