Agricultural greenhouse heating system based on seasonal solar energy soil heat storage

Abstract

The invention relates to an agricultural greenhouse heating supply system based on seasonal solar energy soil heat storage. The agricultural greenhouse heating supply system comprises a solar heat collection subsystem, a greenhouse radiator, a soil heat exchanger, a water circulation subsystem and a control subsystem. The water circulation subsystem is respectively connected with the solar heat collection subsystem, the greenhouse radiator and the soil heat exchanger, heat exchange between circulating water in the water circulation subsystem, the solar heat collection subsystem, the greenhouse radiator and the soil heat exchanger is carried out, the control subsystem is connected with the water circulation subsystem to control the water circulation subsystem to be connected and disconnected, the greenhouse radiator is located inside a greenhouse, the soil heat exchanger is located in soil below the greenhouse, and the solar heat collection subsystem, the water circulation subsystem and the control subsystem are located outside the greenhouse. Compared with the prior art, the agricultural greenhouse heating supply system has the advantages of being high in energy using rate, low in carbon, environmentally friendly, low in operation cost and the like.

Description

technical field [0001] The invention belongs to the fields of new energy, heat supply and facility agriculture, and relates to an agricultural greenhouse heat supply system based on seasonal solar energy soil heat storage. Background technique [0002] The main heating methods of traditional agricultural greenhouses in China include: coal-fired hot air stoves, burning straw, electric heating wires, etc. These traditional heating methods consume high energy consumption, cause large pollution, emit large amounts of greenhouse gases, and have low energy efficiency. [0003] The commonly used new heating method is to heat the agricultural greenhouse through the solar heat collection system, but the traditional solar heat collection system heating for the agricultural greenhouse has a big disadvantage: the temperature of the greenhouse is high enough in spring, autumn and summer most of the time, There is no need for heating, and the solar energy is relatively sufficient during t...

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Problems solved by technology

[0002] The main heating methods of traditional agricultural greenhouses in China include: coal-fired hot air stove, straw burning, electric heating wire, etc. These traditional heating methods have high energy consumption, heavy pollution, large greenhouse gas emissions, and low energy efficiency

[0003] The commonly used new heating method is to heat the agricultural greenhouse through the solar heat collection system, but the traditional solar heat collection system heating for the agricultural greenhouse has a big disadvantage: the temperature of the greenhouse is high enough in spring, autumn and summer most of the time, There is no need for heating, and the solar energy is relatively sufficient during this period, resulting in a lot of waste of solar energy resources; and in winter, when the greenhouse is in urgent need of heating, the solar energy resources are relatively scarce in winter

Situations that result in a summer surplus of solar resources and a winter scarcity

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