Phase-change heat-storage greenhouse seedling device

Abstract

The invention belongs to the technical field of agricultural facilities and particularly relates to a phase-change heat-storage greenhouse seedling device. The phase-change heat-storage greenhouse seedling device comprises a sunlight-greenhouse main body structure comprising a covering material and a skeleton structure, and further comprises a phase-change heat-storage environment regulating system comprising a phase-change heat collecting unit (1), a latent heat storage and exchange unit (2), a root temperature regulating unit (3), a circulating pump set (4) and a circulating pipeline (5). Latent heat type functional thermal fluid is taken as heat-storage media, sunlight radiant heat redundant in the day time is collected as much as possible at the position of the front roof of a sunlight greenhouse by the aid of high heat conductivity of the heat collecting pipeline and phase-change heat storage and enhanced convection heat transfer of the latent heat type functional thermal fluid, growth and development of crops in the daylight greenhouse under winter low temperature conditions and summer high temperature environment is benefited, growth and development speed and growth index of the crops in winters and summers are favorably increased, yield of the crops is increased, quality of the crops is improved, and anniversary efficient production of the crops in the sunlight greenhouse is realized.

Description

technical field [0001] The invention belongs to the technical field of facility agricultural engineering, and in particular relates to a phase change thermal storage greenhouse seedling raising device. Background technique [0002] At present, energy-saving solar greenhouses are the main type of solar greenhouses in northern my country. They can produce temperature-loving vegetables without heating under cold conditions of -10 to 20°C, so that annual production and supply of vegetables in solar greenhouses can be realized. However, there are generally low indoor and ground temperatures in winter in solar greenhouses in my country, and excessively high indoor and ground temperatures in summer. In winter, solar greenhouses use solar energy to increase indoor temperature. Under sunny conditions, the indoor temperature can quickly meet the crop growth requirements during the day, but it cannot be guaranteed in cloudy, rainy and snowy weather. In cloudy, rainy and snowy weather,...

AI Technical Summary

Problems solved by technology

Phase change heat storage walls can accept and absorb limited solar radiation energy, and the heat storage efficiency is low; existing phase change energy storage devices or systems mostly occupy the operating space in the solar greenhouse or affect the lighting in the greenhouse

Up to now, there has been no related patent on the use of latent heat functional thermal fluid as heat storage medium and efficient heat collection by the front roof frame to realize the thermal environment regulation of solar greenhouses

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