Solar heated greenhouse without supplementary heat source
A solar energy, unassisted technology, applied in the field of solar energy applications, can solve problems such as difficulty, immature grid-connected technology, and high cost of solar energy heating, and achieve significant application effects and cost reduction effects
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[0039] 1. Meteorological data (taking Chengde as an example)
[0040] According to the meteorological data, the following data are calculated and given to calculate the heat load.
[0041] The outdoor parameters are as follows [statistical year (1951~1980)]:
[0042] Annual average temperature: 4.9°C, calculated outdoor heating temperature in winter: -23°C, minimum daily average temperature in winter: -29.8°C, winter sunshine rate: 66%
[0043] Maximum depth of frozen soil: 100cm, number of days of heating period with daily average temperature ≤+5°C: 150d, average temperature during the period of daily average temperature ≤+5°C: -8.0°C
[0044] Starting and ending dates with daily average temperature ≤+5°C: November 5th to April 5th, days of heating period with daily average temperature ≤+8°C: 150d
[0045] The average temperature during the period when the daily average temperature is ≤+8°C: -6.6°C, the start and end dates of the daily average temperature ≤+8°C: October 11t...
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