A high-efficiency light and heat resource utilization device for wheat planting

Abstract

The invention discloses a high-efficiency photothermal resource utilization device for wheat planting, which includes a greenhouse body, which is divided into two parts: an upper heat-absorbing area and a lower planting area. Water mist is sprayed in the heat-absorbing area, and the water mist takes away a lot of heat when it evaporates into water vapor, and the low-pressure steam generated by evaporation is absorbed by the high-pressure steam generated by the solar heat collection evaporator in the steam jet pump, and further in the condensation box The sprayed water mist condenses and releases a lot of heat and mixes with it to become high-temperature hot water. The hot water circulates and heats the soil after passing through the horizontal buried tube heat exchanger. When the temperature is low at night, the gravity heat pipe can store the water in the soil. The heat is brought to the planting area, so that the wheat can grow at a suitable temperature all day long, so that the light resources can be stored for day and night, and cycle efficiently.

Description

technical field [0001] The invention relates to the technical field of agricultural production, in particular to a high-efficiency photothermal resource utilization device for wheat planting. Background technique [0002] Wheat seeds can generally germinate at 4-37°C, the fastest germination temperature is 20-25°C, and the most suitable temperature for sowing is when the daily average temperature is 16-18°C. The lowest temperature for wheat germination is 0°C, and the highest temperature is 30-35°C. Modern planting often adopts greenhouse planting methods to reduce climate impact, but greenhouses are generally set up for the cold climate in winter. When the daylight time is too long or the temperature is high, the temperature in the greenhouse will exceed 100% because the heat is not easily lost. The highest temperature that crops can tolerate. During the use of greenhouses, there is such a problem: when the energy is too high during the day, cooling methods must be used, ...

AI Technical Summary

Problems solved by technology

Modern planting often adopts greenhouse planting methods to reduce climate impact, but greenhouses are generally set up for the cold climate in winter. When the daylight time is too long or the temperature is high, the temperature in the greenhouse will exceed 100% because the heat is not easily lost. The highest temperature that crops can tolerate

During the use of greenhouses, there is such a problem: when the energy is too high during the day, cooling methods must be used, and when the temperature is too low at night, heating methods must be used. How can the surplus energy in the greenhouse during the day be collected and released again at night, so that the planting environment in the greenhouse can be continuously maintained at a suitable growth temperature? It is a very important issue for my country's agricultural development

Although this invention can better ensure the maintenance of soil temperature, the heating and cooling methods are all completed through the air conditioning system, and the light and heat resources are only used as the heat storage source of the soil, which cannot make full use of the light resources. , and the degree of manual dependence is high, it is necessary to accurately set a large number of temperature sensors to make the system work

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