Day-night complementary type soil heating system

Abstract

The invention provides a day-night complementary type soil heating system. According to the heating system, one end of a daytime water inlet pump is connected with a heat storage water tank, the otherend of the daytime water inlet pump is connected with a fermentation tank, the fermentation tank is connected with a phase-change material device through a pipeline, and the phase-change material device is connected with the heat storage water tank through a pipeline, so that a loop is formed; one end of a night water inlet pump is connected with the heat storage water tank, the other end of thenight water inlet pump is connected with the phase-change material device, the phase-change material device is connected with the fermentation tank through a pipeline, and the fermentation tank is connected with the heat storage water tank through a pipeline, so that a loop is formed; and one end of a solar water inlet pump is connected with the heat storage water tank, the other end of the solarwater inlet pump is connected with a solar heat collector, and the solar heat collector is connected with the heat storage water tank through a pipeline, so that a loop is formed. The heating system overcomes the defects of single-stage and multi-stage complementary solar heating systems; and an improvement is made on the basis of an original single-stage solar heating system, the fermentation tank is adopted as a complementary heat source, and the phase-change material device is adopted as a heat storage device, so that the cost is reduced, the problems of energy consumption, environmental pollution and incapability of continuous heating by the single-stage solar heating system for a long time and incapability of continuous heating at night are solved, and all-day continuous heating is realized.

Description

technical field [0001] The invention relates to a day and night complementary soil heating system, which belongs to the technical field of soil heating systems. Background technique [0002] With the growing popularity of growing fruits and vegetables in greenhouses, due to the low soil temperature in winter, the roots of fruits and vegetables in greenhouses are susceptible to low-temperature frostbite, which is not conducive to the growth of fruits and vegetables. Therefore, the development of soil heating technology has become more important. Most rural areas in northern my country use kangs, stoves, and coal-fired boilers for heating. Traditional rural heating methods have low thermal conversion rates, huge energy waste, uneven heating of the soil, and serious environmental pollution. Therefore, it is urgent to promote them in northern rural areas. Clean heating technology. At present, clean heating measures mainly include "coal-to-gas", "coal-to-electricity" and renewabl...

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Problems solved by technology

[0004] In order to solve the technical problems mentioned in the above-mentioned background technology, the present invention proposes a day and night complementary soil heating system, which is improved on the original single-stage solar heating system, by using the fermentation tank as a complementary heat source, and the phase change material device as heat The storage device reduces the cost and solves the problems of energy consumption, environmental pollution and the single-stage solar heating system cannot continue to heat for a long time, cannot continue to heat at night, and is affected by the length of sunshine and weather changes, so as to achieve continuous heating throughout the day

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