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Phase-change heat storage solar water heater without heat storage box

A solar water heater and phase-change heat storage technology, which is applied to solar collectors, solar thermal energy, solar thermal power generation, etc., can solve the problems of high cost and low thermal conductivity, and achieve the effects of low cost, high thermal efficiency and cost reduction.

Inactive Publication Date: 2015-09-23
海宁汇豪太阳能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention aims to solve the problems of high cost and low heat conduction efficiency of the existing phase change heat storage solar water heaters

Method used

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  • Phase-change heat storage solar water heater without heat storage box
  • Phase-change heat storage solar water heater without heat storage box
  • Phase-change heat storage solar water heater without heat storage box

Examples

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Embodiment

[0018] Example: phase change heat storage solar water heater without heat storage tank

[0019] In this embodiment, the finned tube heat exchanger adopts a U-shaped finned tube heat exchanger, figure 1 The phase-change heat storage solar water heater without a heat storage tank shown in , includes an all-glass solar vacuum heat collection tube 9, a header 1, and a bracket 10. The header 1 is provided with a water inlet 5 and a water outlet 6. In addition, a corresponding Change material filling port 3; phase change material 7 is installed in all-glass solar vacuum heat collecting tube 9; U-shaped fin tube heat exchanger 8 is arranged in all-glass solar vacuum heat collecting tube 9, U-shaped fin tube heat exchanger 8 almost fills the entire vacuum tube 9 and is in close contact with the inner wall of the vacuum tube 9; there is a little space for expansion of the phase change material at the top of the vacuum tube 9. Holes 12 are left on the fins of the U-shaped finne...

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Abstract

The invention provides a solar water heater using a phase-change material as a heat storage medium. The problem that an existing phase-change heat storage solar water heater is high in cost and low in heat conducting efficiency is solved. The phase-change heat storage solar water heater without a heat storage box comprises full-glass solar vacuum heat-collecting tubes, a header and a support, wherein a water inlet and a water outlet are formed in the header. In addition, the phase-change heat storage solar water heater is further provided with a phase-change material filling port. The full-glass solar vacuum heat-collecting tubes are filled with the phase-change material. Finned tube exchangers are arranged in the full-glass solar vacuum heat-collecting tubes, the whole vacuum tubes and are almost full of the finned tube exchangers, and the finned tube exchangers are in tight contact with the inner walls of the vacuum tubes a. A little space for phase-change material expansion is reserved at the upper portion of each vacuum tube. Due to the fact that the phase-change material is used as the heat storage medium, the heat storage capacity of the heat storage medium is several times or more of that of water, and more heat can be stored. Due to the heat storage box is omitted, the phase-change material is directly filled in the vacuum tubes, and cost is greatly reduced. The full-glass solar vacuum heat-collecting tubes directly transfer converted heat energy to the heat storage medium and is high in heat efficiency. The vacuum tubes do not bear pressure, and hot water is still output in a pressure-bearing mode.

Description

technical field [0001] The invention relates to a solar water heater, in particular to a solar water heater using a phase change material as a heat storage medium. technical background [0002] Existing solar water heaters use water as the heat storage medium, which utilizes the rise in water temperature (sensible heat) to store heat, so the heat storage capacity is very low; and as the water temperature rises, the heat lost is relatively small many. [0003] Using phase change materials as the heat storage medium of solar water heaters can greatly improve the heat storage capacity of the water heaters. Although some patents have also considered the use of phase change materials as heat storage media for solar water heaters, they all have heat storage tanks, and transfer the heat energy converted from solar energy to phase change materials through heat conducting components, so the cost is high and the heat conduction efficiency is low. Contents of the inv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24J2/34F24J2/30F24J2/46F24S10/30
CPCY02E10/44
Inventor 黄勤娟
Owner 海宁汇豪太阳能科技有限公司
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