A solar heat collection greenhouse with balanced floor heating

Abstract

The invention discloses a solar heat collection greenhouse with balanced floor heating. The solar heat collection greenhouse includes solar thermal collectors, a greenhouse body, a controller, temperature sensors, a circulation pump and floor heating coils, wherein a plurality of solar thermal collectors are arranged outside the greenhouse body; the water outlet pipeline of the solar thermal collectors is connected with one ends of the floor heating coils; the other end of the floor heating coils is connected with the return water pipeline of the solar thermal collectors; the circulation pump is arranged on the return water pipeline; the temperature sensors are respectively arranged at the outlet ends of the solar thermal collectors, in the interior of the greenhouse and in the soil inside the greenhouse; all the temperature sensors are connected with the controller; a first electromagnetic valve is arranged on the water outlet pipeline of the solar thermal collectors, and a second electromagnetic valve is arranged on the return water pipeline. According to the invention, the solar thermal collectors are used for absorbing heat which is then transferred to the soil by the floor heating coils through a heat-transfer medium, so that the ground temperature is improved; the balance of the ground temperature is ensured through regular direction change, and the environmental temperature and ground temperature are improved, so as to promote the growth of the crops, shorten the growth cycle and increase the yield.

Description

technical field [0001] The invention relates to a solar heat collecting greenhouse with balanced floor heating. Background technique [0002] The greenhouse was originally a special equipment for vegetable production. With the development of production, the application of greenhouses has become more and more extensive. But in the north, the temperature is very low in winter, and the roots of the crops need to be heated. The existing heating methods mainly include the following types: [0003] (1) Use electric heating rods for heating. Since this heating method is electric heating, and there is water in the roots of the crops, it is easy to leak electricity and is more dangerous; [0004] (2) The boiler is used to heat the greenhouse. The heat medium of the boiler is coal, and the flue gas produced pollutes the environment. In order to ensure a constant temperature in the greenhouse, farmers need to add coal multiple times every night, which increases the labor intensity of...

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Problems solved by technology

[0003] (1) Use electric heating rods for heating. Since this heating method is electric heating, and there is water in the roots of the crops, it is easy to leak electricity and is more dangerous;

[0004] (2) The boiler is used to heat the greenhouse. The heat medium of the boiler is coal, and the flue gas produced pollutes the environment. In order to ensure a constant temperature in the greenhouse, farmers need to add coal several times every night, which increases the labor intensity of farmers

[0005] (3) When solar collectors are used, there is a problem of freezing of solar collectors. Generally, refrigerants, various antifreeze fluids, and antifreeze oils are used as circulating media to perform secondary exchanges with water tanks to solve the problem of freezing. Complicated, high heat loss and poor heat collection effect, and when the antifreeze fluid drips, it will pollute the environment;

[0006] The floor heating provided by the above method not only has the problems of electric leakage and damage to the environment, but also has uneven floor heating heating. The temperature in many places is too high, and the temperature in other places is too low, which affects the growth of plants and cannot guarantee a good harvest in the greenhouse.

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