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Composite phase-change heat-storage heating method and heating apparatus

A technology of phase change heat storage and composite phase change, which is applied to heating methods and central heating, can solve the problems of large heat storage equipment and insufficient heat storage capacity, and achieve the effect of improving heat storage capacity and reducing volume

Inactive Publication Date: 2006-02-08
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The invention aims to solve the shortcomings of insufficient heat storage capacity and large volume of heat storage equipment in the current heat storage heating technology, and proposes a composite phase change heat storage heating method

Method used

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  • Composite phase-change heat-storage heating method and heating apparatus
  • Composite phase-change heat-storage heating method and heating apparatus
  • Composite phase-change heat-storage heating method and heating apparatus

Examples

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Effect test

example 1

[0030] Example 1: Thermal storage electric heater

[0031] The specific structure of the electric heating device of the regenerative electric heater can be seen in Fig. 6 to Fig. 8 . An electric heating plate 18 is arranged at the bottom of the heat storage device to provide heat. The electric wires of the electric heating plate 18 pass through from the airflow channel 15 and the insulation layer 14, and the electric wires are covered with insulating sleeves 19 outside.

[0032] The heat storage device is composed of three parts: an insulation layer 14 , a heat storage chamber 22 , and a packed bed containing a phase-change heat storage medium and a heat medium 12 . The thermal insulation layer 14 covers the heat storage cavity 22 and the air flow channel 15, and its function is to reduce heat loss during the heat storage process. The heat medium 12 generally uses heat-conducting oil, because it has a large thermal conductivity, good heat transfer performance, and has a cert...

example 2

[0035] Example 2: Regenerative heating tube in floor electric heating

[0036] First of all, when manufacturing heat storage tubes and heat storage capsules filled with phase change heat storage medium, a certain amount of space margin should be reserved when filling the heat storage medium, so as to avoid volume expansion when the phase change heat storage medium melts and cause expansion of the tube. After filling, it should be strictly sealed to prevent the phase change material from seeping out after long-term use, which will greatly reduce the heat storage effect. The phase change thermal storage medium can be selected from organic or inorganic phase change materials with a phase change temperature between 40 and 45 degrees Celsius. Then, install the heating cable in the center of the outsourcing pipe. In the next step, the remaining space in the tube is filled with the fabricated heat storage tube or capsule. Its specific structure can be seen in Figure 3-Figure 5. Fi...

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Abstract

The new composite phase changing heat accumulating heating technology includes adding heat accumulating pipe and heat accumulating capsule into traditional electric heating set and filling heat medium in the gaps. The heat accumulating medium takes phase change while being heated and cooled to form one latent heat accumulating process. The heat medium acts as the fluid medium for heat transfer between the heated surface and the heat accumulating medium to strengthen the heat transfer inside the heat accumulating medium on one hand, and takes temperature change as one sensible heat process accompanying the heat accumulating and releasing on the other hand. The technology of the present invention can strengthen the heat transfer process inside heat accumulating medium, raise heat accumulating capacity and decrease size of heat accumulating apparatus.

Description

technical field [0001] The invention relates to a phase-change heat storage heating method and a heating pipe section in electric heating and floor electric heating, belonging to a residential heating method and system. Background technique [0002] Heat storage technology is an important technology to improve energy utilization efficiency and environmental protection. It can be used to solve the rationing contradiction between heat energy supply and demand, and has become a research hotspot worldwide. With the improvement of people's living standards, more and more electrical appliances have entered the homes of ordinary people, and the frequency of use of most of these electrical appliances has dropped sharply after the early morning. This makes the original very serious "peak-valley" contradiction of power supply more prominent, and the difference between peak power consumption and low power consumption load is getting bigger and bigger. The continuous increase of the pe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24D15/02F24D13/00F24D11/00
CPCY02B30/12
Inventor 刘中良张明李晶李莉马重芳
Owner BEIJING UNIV OF TECH
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