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Optimizing the Design of Solar Energy Greenhouses

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org

Citation:   No Citation available.
Authors:   Eshetu Beshada, Qiang Zhang
Keywords:   solar energy, greenhouse, shading

A solar energy greenhouse technology developed in northern China for winter vegetable production has shown a good potential for Manitoba winter conditions. The design and performance of solar energy greenhouses are dependent on the geographical location. Theoretical analysis was conducted to optimize the design of solar greenhouses with respect to the latitude of the location for maximum solar radiation gain. The parameters that were analyzed included the greenhouse length and the roof slope. The model predictions indicate that shading of the solar storage (north) wall in a solar energy greenhouse may considerably reduce the amount of solar energy stored in the greenhouse. The tilt angle of the north roof can be optimized to eliminate its shading effect. To reduce the shading effect by the end wall, a long greenhouse is preferred.

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