A greenhouse that uses a rotatable heat-absorbing plate for temperature regulation

Abstract

The invention discloses a greenhouse using a rotatable heat absorbing plate to adjust temperature. The greenhouse comprises four walls, a ceiling with the rotatable heat absorbing plate, a circulatingwater pump and a heat storage water tank, wherein the four walls enclose an indoor space of the greenhouse; the ceiling comprises a transparent cover plate, water pipes, the rotatable heat absorbingplate, a thermal insulation layer and beams, and the ceiling covers an upper part of the greenhouse space; the transparent cover covers above the ceiling of the whole greenhouse, and a plurality of the water pipes are connected to form a long water pipe which is connected with the circulating water pump and the heat storage water tank; the rotatable heat absorbing plate is fixedly connected with the water pipes, and rotates following the water pipes; and the side of the rotatable heat absorbing plate near the water pipes is coated with a selective metal absorbing coating layer, and the side facing away from the water pipes is fixed with the thermal insulation layer. According to the greenhouse, rotation of the rotatable heat absorbing plate can play functions of heat storage, light transmission and thermal insulation; the utilization efficiency of solar energy can be improved, and the temperature is reliably adjusted; and the greenhouse is suitable for an area with large temperature difference between day and night, thermal insulation and heat supply at night can also be realized, and the system is simple.

Description

technical field [0001] The invention relates to the field of greenhouses, in particular to a greenhouse which utilizes a rotatable heat absorbing plate for temperature regulation. Background technique [0002] A greenhouse is an artificially established microclimate system suitable for the growth of crops. The particularity of this system lies in the high heat transfer coefficient of the envelope structure, rapid heat leakage, and basically no heat storage capacity compared with conventional buildings. At present, there are mainly two types of heating systems for greenhouses, namely hot air heating systems and hot water heating systems. The hot air heating system has the advantage of direct air supply without heat exchange, which saves investment, but it has a certain impact on the growth of crops, and the use of conventional energy to directly heat the air in the greenhouse not only consumes a lot of energy, but also easily causes uneven temperature distribution in the gre...

AI Technical Summary

Problems solved by technology

However, the use of the shading principle reduces the efficiency of solar energy utilization, cannot achieve night heat preservation and heating, and the system is complicated

[0006] Further searching found that the patent of Chinese Patent Application No. 201220258091.5 also adopted the above-mentioned shading principle, and adopted a rotating and adjustable non-transparent shading plate, but it mainly adjusts the light and has poor controllability to the temperature. It also cannot realize night heat preservation and heating.

[0007] From the above searches, we can see that the existing technology has problems such as low solar energy utilization efficiency, poor temperature control, inability to realize night heat preservation and heating, poor applicability in areas with large temperature differences between day and night, and complex systems.

Images