Unlock instant, AI-driven research and patent intelligence for your innovation.

A solar energy utilization method for precipitation of solid heat storage

A solid heat storage and solar energy technology, applied in the field of solar energy utilization, can solve the problems of large change in contrast performance, small heat exchange power, long heat exchange time, etc., and achieve the effect of small volume change, high heat exchange efficiency, and large heat storage.

Active Publication Date: 2019-06-14
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there are many advantages, in the exothermic process from liquid phase to solid phase, the influencing factor of heat transfer coefficient is changed from liquid convective heat transfer to solid heat conduction, which leads to a great reduction of the coefficient, so the heat transfer time is long and the heat transfer efficiency is long. The power is small, and the contrast performance of the overall solar energy utilization system changes greatly before and after heat absorption and release; and because the solid and liquid densities change greatly, there are also certain requirements for the safety of container design

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A solar energy utilization method for precipitation of solid heat storage
  • A solar energy utilization method for precipitation of solid heat storage
  • A solar energy utilization method for precipitation of solid heat storage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A solar energy utilization method for precipitation of solid heat storage, which is realized by a solar energy utilization system for precipitation of solid heat storage, the solar energy utilization system for precipitation of solid heat storage is as follows figure 1 As shown, it includes a heat collector, a heat storage box provided with a thermal insulation shell 1, a heat collection box and a heat exchanger 3 in the heat storage box arranged in the heat storage box, and the solar energy utilization method for separating out solid heat storage includes the following step:

[0031] Step 1. Store solar energy in the saturated solution in the heat storage temperature section and precipitate solid solutes to form a saturated solution in the high temperature section. The saturated solution in the low temperature section or the heat storage temperature section is a solution whose solubility decreases as the temperature increases;

[0032] Wherein, the step 1 specifically ...

Embodiment 2

[0041] In this embodiment, the power tray 5 in Embodiment 1 is replaced by a stirring device, and the fluid is slowly stirred when exothermic, so that the solution is mixed to maintain its saturation and uniform temperature characteristics.

Embodiment 3

[0043] In this embodiment, the power tray 5 structure in Embodiment 1 is removed, as figure 2 As shown, a bypass line communicating with the heat storage tank is provided on one side of the heat storage tank, and the bypass line is filled with insoluble saturated solution and solid solute and can be transformed from a liquid state when passing through a high-temperature saturated solution It is a gaseous insoluble working substance 31, and the bypass pipeline is provided with a front-stage heat exchanger and a one-way valve, wherein the insoluble working substance 31, which is insoluble in solvents and solutes, is uniform within the temperature range from the heat storage temperature section to the high temperature end. is gaseous. The heat absorption process of the solution in the heat storage tank is the same as that in Example 1. When the heat storage tank releases heat, the heated fluid first flows through the pre-stage heat exchanger 32 on the bypass to absorb the heat i...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for utilizing solar energy by separating out solids to store heat. The method for utilizing the solar energy by separating out the solids to store the heat comprises the steps that first, a saturated solution of the heat storage temperature section stores the solar energy, solid solutes are separated out, and a saturated solution of the high temperature section is formed; and second, the saturated solution of the high temperature section releases heat to absorb the solid solutes, and the saturated solution of the heat storage temperature section is formed. A traditional heat storage mode of large capacity solid-liquid phase change heat storage is changed, and when the solid solutes are separated out from parts of special heat storage working mediums (the solution solubility is decreased with increasing of the temperature at the full temperature section or the part temperature section), the parts of special heat storage working mediums still in the liquid state when exchanging heat with the outside world, so that the high heat exchange coefficient of heat absorption and heat release, the defect of excessively-low solid state heat transfer coefficient in the traditional phase change heat exchange process is avoided, changes of chemical heat and physical heat are included in the heat storage process, and the heat storage amount is large.

Description

technical field [0001] The invention relates to the field of solar energy utilization, in particular to a solar energy utilization method for precipitation of solid heat storage. Background technique [0002] Solar energy has the characteristics of randomness, regionality, and seasonality. Therefore, in order to use solar energy more stably, energy storage has become an important component of its use. Sensible heat is used for energy storage, the energy storage is small, and the temperature rise is large, so it is generally used in the field of low-temperature hot water. For large-scale heat storage, the volume of sensible heat storage is large, the cost is high, and the heat dissipation is large, which reduces the efficiency of solar energy use. [0003] In order to improve the efficiency of solar energy use, phase change heat storage is applied in engineering practice. Traditional phase change heat storage is based on the principle that a large amount of physical latent ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F24S60/00F24S10/30F24S80/00
CPCY02E10/44
Inventor 王显龙李华山廉永旺姚远卜宪标王令宝马伟斌
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI