Static thermal-storage heating-amount slow-release structure and construction process and use thereof

Abstract

The present invention relates to a geothermic electric heating static heat-stored heating heat quantity slowly-releasing structure, its construction process and application. Its structure comprises up-down laminated heat-storing layer and heat quantity slowly-releasing layer, the geothermic cable is embedded in the heat-storing layer formed from heat-storing material whose heat-conducting coefficient is 0.3-0.79w.m(-1).k(-1), said heat-storing layer is covered with the slowly-releasing layer formed from slowly-releasing material whose heat-conducting coefficient is 0.04-0.07 w.m(-1).k(-1), and the temp. sensor is embedded in the slowly-releasing layer, and is series-connected with geothermal cable loop. Its application includes the following steps: starting power supply to supply power to geothermic cable, and storing heat energy in heat-storing layer, then slowly-releasing the heat energy to heating space by means of slowly-releasing layer.

Description

technical field [0001] The invention relates to electric heating technology, in particular to a geothermal electric heating static heat storage heating heat slow release structure and its construction technology and application. Background technique [0002] At present, the existing electric heating technology still has some imperfect aspects: [0003] 1. Most of them use electric radiators, electric heaters, and electric water heaters for direct heating, and the comprehensive energy utilization efficiency is low, only 30%. In addition, warm air is used for heating. When the distance is long, cold wind is formed due to heat dissipation and air exchange, and the comfort of indoor personnel is poor (factors that affect comfort include temperature, air pressure, humidity, wind speed, etc.); [0004] 2. The electric heating film ceiling radiation heating with low cost but relatively simple technology has poor comfort and safety, and the surface temperature of the radiator excee...

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Problems solved by technology

[0003] 1. Most of them use electric radiators, electric heaters, and electric water heaters for direct heating, and the comprehensive energy utilization efficiency is low, only 30%. In addition, warm air is used for heating. When the distance is long, cold wind is formed due to heat dissipation and air exchange, and the comfort of indoor personnel is poor (factors that affect comfort include temperature, air pressure, humidity, wind speed, etc.);

[0004] 2. The electric heating film ceiling radiation heating with low cost but relatively simple technology has poor comfort and safety, and the surface temperature of the radiator exceeds the national standard;

[0005] 3. Household central air-conditioning technology of air heat pump, the heating capacity is limited by temperature, which has adverse effects on the environment;

[0006] 4. Groundwater electric heat pump heating, which uses low-temperature heat exchange technology to pump out groundwater and use its heat energy. Although the conversion efficiency is high, the investment cost is high, and the pollution of groundwater will not be solved.

[0007] 5. Regenerative radiator technology and large-volume water heat storage technology, high-pressure and high-temperature water heat storage technology, bulky, and water heat storage technology is not suitable for urban heating

[0008] 6. The traditional geothermal cable heating technology is to bury the geothermal cable for heating in the heat storage material of a certain thickness below the ground, and use the heat released by the heat storage material to obtain a reasonable vertical temperature field distribution, which is comfortable and indoor heat. good stability, figure 2 It is the time and temperature change curve of the traditional geothermal cable heating power supply. It can be seen from the figure that the heating rate is faster. The disadvantage is that the cooling rate is faster after the power is cut off, resulting in a rapid drop in the temperature of the heating space.

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