Thermal Science 2022 Volume 26, Issue 3 Part A, Pages: 2349-2360
https://doi.org/10.2298/TSCI2203349L
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Application of renewable materials in energy saving of new building solar greenhouse
Li Xuan (Space Design, Hanseo University, Seosan, Korea), xuanli_82@126.com
This paper studies the application of renewable materials in the energy
saving of new building solar greenhouse, and analyzes the influence of
different building materials on the energy saving of solar greenhouse, it
can adjust the angle of the sunlight greenhouse roof manually to improve the
solar radiation into the room and adjust the fan system manually to increase
the heat storage of the back wall. The test greenhouse located in a modern
production base of a city was measured, and the test data under different
weather conditions in winter of 2020 were selected to analyze the
characteristics of temperature and light data indexes in the renewable
material solar greenhouse and common material solar greenhouse, and the
active lighting mechanism and active heat storage mechanism of the
renewable material new building solar greenhouse were theoretically
studied. The results show that the average light transmittance and indoor
illumination of the solar greenhouse with recycled materials are increased
compared with that of ordinary materials under different weather conditions
in winter. In winter solstice, cloudy days and sunny days, the light
transmittance of active daylighting and heat storage solar greenhouse was
61.17%, 58.26%, and 70.81%, respectively, which was 7.87%, 5.88%, and 11.45%
higher than that of ordinary energy-saving solar greenhouse, and the
corresponding indoor illumination was 15.42%, 11.73%, and 21.28% higher than
that of ordinary energy-saving solar greenhouse. In terms of temperature,
under different weather conditions in winter, the indoor temperature and
ground temperature of the solar greenhouse with active daylighting and heat
storage are significantly higher than those of the control material
energy-saving solar greenhouse. The temperature difference between indoor
and outdoor is above 27ºC.
Keywords: tilting roof technology, active heat storage technology, mechanism of active daylighting, roof angle
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