Slope greenhouse solar chimney ventilation system

Abstract

The invention discloses a slope greenhouse solar chimney ventilation system which comprises a solar chimney arranged at a wall of one side of a greenhouse, an outdoor air inlet formed in the lower endof the solar chimney, and an indoor air inlet formed in the upper end of the solar chimney and communicated with the upper end of the side wall of the wall; meanwhile, the system further comprises aplurality of air supply outlets of different sizes arranged at the top of the greenhouse and an exhaust outlet formed in the bottom of the wall at the other side of the greenhouse. By means of the hot-pressing effect of the solar chimney, hot-blast air is supplied into the greenhouse through the air supply outlets in the top of the greenhouse and the indoor air inlet, the defect that heat inside the greenhouse is not sufficient in winter is overcome, and the good growth micro-environment is provided for fruits and vegetables. Due to the air outlets of different sizes, distribution of temperature inside the greenhouse is more uniform; in addition, the air supply outlets of the variable sizes can lower the total pressure of a fan, and energy consumption of the whole ventilation system is lowered.

Description

technical field [0001] The invention relates to a ventilation system for increasing the temperature of a greenhouse in winter, in particular to a solar chimney ventilation system for a slope greenhouse. Background technique [0002] Greenhouse is an important modern agricultural measure, and it is also a complex microenvironmental ecosystem, so it needs a suitable crop environment to adapt to its growth. Common greenhouses often adopt an artificial frame-covered structure in which one or more layers of thermal insulation plastic film are covered on the skeleton of a bamboo-wood structure or a steel structure. Same as the greenhouse effect, the film prevents a large amount of long-wave radiation in the shed at night, thus forming an independent greenhouse space so that the shed can have good temperature protection during the day and night. In addition, the outer membrane can effectively prevent the loss of carbon dioxide produced by the respiration of fruits and vegetables, ...

AI Technical Summary

Problems solved by technology

However, covering these opaque materials will not only reduce the incident solar radiation during the day, but also affect the photosynthesis of plants, resulting in a decrease in the temperature in the shed and inhibition of crop growth.

In addition, the structure of the conventional greenhouse is characterized by its long length, and the uneven distribution of solar radiation in the morning and evening, which makes the uneven distribution of heat along the length of the greenhouse, resulting in different heating of the growing areas of fruits and vegetables in the greenhouse, which affects the quality of their growth.

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