Abstract
Phase change materials have good peak-shaving and valley-filling effects, which are effective for improving the thermal environment of passive thermal storage buildings. In this paper, phase change materials were applied to a solar greenhouse in the plateau area, and the indoor temperature is measured and analyzed under different meteorological conditions. It was concluded that when phase change materials were applied in the central region of Yunnan, where the temperature difference between day and night was large, it had a significant improvement effect on the thermal environment inside the solar greenhouse. The average outdoor air temperature, the maximum outdoor temperature difference between day and night, and solar radiation were the main factors affecting the temperature in the greenhouse. By analyzing and evaluating the effect of using phase change materials in solar greenhouses under different outdoor climate conditions, the advantages and limitations of using phase change greenhouses in different areas of the plateau were discussed.
Highlights
The temperature variation in greenhouses plays a key role in the growth and development of indoor crops [1,2]
Naj jar A[6] et al simulated the thermal environment of a greenhouse containing phase change materials and the results obtained were consistent with the measured data, indicating that the use of phase change materials can reduce the indoor temperature difference and lower the maximum indoor temperature by about 5°C in summer
We analyzed the effect of phase change materials on regulating the thermal environment of greenhouses, explored the effect of using phase change greenhouses in different climatic conditions in Yunnan, and concluded the advantages and limitations of using phase change greenhouses in different regions of Yunnan, based on the highland climate characteristics of Yunnan with high solar radiation intensity during daytime and large temperature difference between day and night
Summary
The temperature variation in greenhouses plays a key role in the growth and development of indoor crops [1,2]. Phase change greenhouse can use phase change material to absorb and release a large amount of latent heat through its phase change to realize energy transfer in time and space, store excess solar energy during the daytime, and release energy into the greenhouse at night when the temperature inside the greenhouse decreases, which can reduce the fluctuation of greenhouse temperature during the whole phase change cycle and create a more stable greenhouse microclimate environment with obvious energy-saving effect. We analyzed the effect of phase change materials on regulating the thermal environment of greenhouses, explored the effect of using phase change greenhouses in different climatic conditions in Yunnan, and concluded the advantages and limitations of using phase change greenhouses in different regions of Yunnan, based on the highland climate characteristics of Yunnan with high solar radiation intensity during daytime and large temperature difference between day and night
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
