Solar greenhouse soil heat supply and temperature increasing device

Abstract

The invention discloses a solar greenhouse soil heat supply and temperature increasing device. The solar greenhouse soil heat supply and temperature increasing device includes greenhouse solar thermalcollectors, connection pipes and radiators and is characterized in that the greenhouse solar thermal collectors and the radiators are connected through the connection pipes to form a sealed communication heat storage device, the interiors of the solar thermal collectors and the interiors of the radiators are full of heat storage media, medium inlets / outlets are formed in the tops of the radiators, the communication heat storage device is laid on land of non-planting areas inside the greenhouse and on vacant land around the greenhouse, and the radiators on the communication heat storage deviceare buried in soil of the non-planting areas inside the greenhouse. During practical use, heat is transmitted to soil of land where the greenhouse is located through the communication heat storage device, a large amount of heat can be stored in the soil under the greenhouse in advance, therefore, time for heating the interior of the greenhouse at night can be prolonged, and the air temperature needed by growth of plants inside the greenhouse is ensured.

Description

technical field [0001] The invention relates to the technical field of solar energy utilization, in particular to a soil heating and warming device for a solar greenhouse. Background technique [0002] The rural agricultural economy has developed rapidly in recent years, and a large number of greenhouses have been newly established. The "greenhouse vegetable" industry has become a new economic growth point of rural agriculture and a new direction for adjusting the rural industrial structure. Greenhouse vegetables earn a high income due to the seasonal price difference. The net profit per mu of greenhouses is around 15,000 yuan, or even more than 60,000 yuan. The income of one mu of pollution-free greenhouse vegetables is equivalent to 7 to 10 mu of vegetables in the open air. The most important factor restricting the development of greenhouse planting and the income of farmers is the sudden drop in temperature in the greenhouse at night, which affects the growth cycle of p...

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Problems solved by technology

[0003] The invention solves the problems existing in the prior art during the development of greenhouse planting. When the greenhouse is used for planting in winter, the temperature in the greenhouse drops suddenly at night, which will affect the growth cycle of the planted crops or cause the crops to suffer severe freezing damage. To solve the contradiction between low temperature in winter and slow growth of plants, it is necessary to provide heating for the greenhouse. However, in the process of heating the greenhouse, it is currently difficult to choose which heating method can be realized and which energy to use to realize the heating of the greenhouse. The problem is to provide a soil heating and warming device for solar greenhouses. When it is applied, it absorbs solar energy through the solar heat collector connected to the heat storage, and then stores the absorbed heat in the solar heat collector and the radiator. In the soil in the greenhouse, the heat absorbed by the solar collector is transferred to the soil through the heat medium in the tank, and a large amount of heat is stored in the soil during the day, and the heat in the soil is dissipated into the greenhouse at night to provide energy for the greenhouse. In addition, the heat in the cooling body can also be directly dissipated into the air in the greenhouse, thereby providing heat for the greenhouse to ensure the temperature required for the growth of plants in the greenhouse

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