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High-temperature heat-storing device using concrete and heat storage method thereof

A concrete and heat storage technology, applied in the field of solar energy utilization, can solve the problems of inability to achieve high temperature storage, loose iron ore accumulation, unfavorable heat storage and heat release, etc., and achieve stable high temperature performance, low cost and heat transfer performance. excellent effect

Inactive Publication Date: 2010-01-06
GUANGDONG FIVESTAR SOLAR ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to its loose accumulation, iron ore is not conducive to the process of heat storage and heat release, and its thermal efficiency is low
Heat transfer oil and rock hybrid heat storage system cannot achieve high temperature storage due to the limitation of the boiling point of oil

Method used

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  • High-temperature heat-storing device using concrete and heat storage method thereof
  • High-temperature heat-storing device using concrete and heat storage method thereof
  • High-temperature heat-storing device using concrete and heat storage method thereof

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Experimental program
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Embodiment Construction

[0017] Depend on figure 1 , the concrete heat storage block (1) is made of concrete material, and its density is 2.98g / cm 3 , the specific heat at constant pressure is 970J / (K kg), the thermal conductivity at room temperature is 25°C is 1.75W / (m·K), the refractoriness is 1000°C, and the storage temperature rises from 300°C to 600°C, the concrete heat storage block The size is 1m×1m×1.5m, the stored heat energy is 361.325kWh, and the total stored heat per unit volume can reach 240.8kWh / m 3 . The bare tube heat exchanger pipe (2) adopts metal pipe or non-metallic pipe, the inner and outer walls of the bare pipe heat exchanger pipe (2) are kept smooth, and the bare pipe heat exchanger pipe (2) is buried in the concrete heat storage block (1) , and keep a proper distance, one end of the bare tube heat exchanger pipe (2) is a fluid inlet (3), and the other end is a fluid outlet (4). When the concrete heat storage block (1) is heated, the high-temperature fluid flows in from the ...

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Abstract

The invention relates to high-temperature heat storage device utilizing concrete and its heat storing method. Its heat exchange pipeline is buried in concrete heat storage block, heat exchange fin is at external wall of the pipe, a valve is mounted at cold fluid inlet, cold fluid outlet is at the other end of cold fluid tank; a valve is mounted at heat fluid inlet, heat fluid outlet is at the other end of heat fluid tank. Heat exchange is carried out utilizing the difference of temperature between the concrete heat storage block and the heat exchange pipeline.

Description

technical field [0001] The invention relates to a high-temperature heat storage device using concrete and a heat storage method thereof. The pipes of the heat exchanger are embedded in concrete components, and heat exchange is performed due to temperature differences. The invention can be applied to solar power generation and belongs to the field of solar energy utilization. Background technique [0002] There are currently three heat storage methods: sensible heat, latent heat and chemical energy. Sensible heat storage technology is the simplest and most mature, and widely used. Commonly used sensible heat storage materials include water, oil, masonry, and cement. Latent heat storage, also known as phase change heat storage, is the use of materials to absorb or release latent heat during phase change to store and release heat. During the phase change process, the material is at a constant temperature. It is currently the most widely used and most researched heat storage. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28D20/00F28D15/02
CPCY02E60/142Y02E60/14
Inventor 王志峰白凤武朱教群
Owner GUANGDONG FIVESTAR SOLAR ENERGY
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