Temperature self-regulating solar greenhouse system based on phase change heat storage technology

Abstract

The invention relates to a temperature self-regulating solar greenhouse system based on phase change heat storage technology. The temperature self-regulating solar greenhouse system comprises a phasechange heat storage wall, an automatic control mechanism, a solar collector, a collector outlet pipe, a collector return pipe, an electromagnetic inlet valve, a water inlet tee pipe, a water return tee pipe, a ground circulation pipeline, an electric heating and thermal insulation water tank and a cold water replenishment water tank. The temperature self-regulating solar greenhouse system based onthe phase change heat storage technology has the advantages that with the solar collector and the automatic control mechanism added on the basis of a traditional greenhouse system and a greenhouse brick wall structure improved into a phase change heat storage wall structure at the same time, the solar collector can effectively absorb solar heat during the day and conduct heating and heat storageto a greenhouse through water circulation; the greenhouse brick wall structure is used for regulating heat storage in the day and heat release at night in the greenhouse to realize stable indoor environment; the automatic control mechanism can conduct data collection and processing as well as automatic regulation of the greenhouse system so as to achieve energy-saving and environment-friendly effects and have positive significance for the development of greenhouse agriculture.

Description

technical field [0001] The invention relates to the technical field of facility agricultural greenhouses, in particular to a self-temperature-controlling solar greenhouse system based on phase change heat storage technology. The system uses an automatic control mechanism to adjust the heat collected by the solar collector and the heat storage and release characteristics of the phase change heat storage wall to achieve high efficiency and energy saving in the greenhouse. Background technique [0002] With the improvement of living standards, people have higher and higher requirements for the richness and nutrition of the diet on the table. In most areas of our country, it is not suitable for planting and growing crops in cold winter, resulting in shortage of fresh fruits and vegetables in winter and high prices. As a modern agricultural technology, greenhouse agriculture makes up for this contradiction between supply and demand. At present, most of the widely used greenhous...

AI Technical Summary

Problems solved by technology

At present, most of the widely used greenhouse systems in our country use traditional brick walls as the maintenance structure and light-transmitting film covering as the roof structure. However, in the cold season, especially at night in the cold season, due to the low sunlight collection rate during the day, even if the thermal insulation effect is enhanced by adding phase change materials, it is often impossible to achieve a suitable temperature environment for crop growth, and freezing damage will occur and chilling damage

In order to ensure the temperature stability of the greenhouse system at night, the maintenance personnel of the greenhouse system also need to burn coal for auxiliary heating of the greenhouse at night, which not only consumes a lot of resources but also pollutes the environment, and also greatly increases the workload of personnel. Inadequate supervision will also cause economic losses. , which is not conducive to the expansion of production scale and the improvement of informatization in greenhouse agriculture

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