A slope greenhouse solar chimney ventilation system

Abstract

The invention discloses a solar chimney ventilation system for a slope greenhouse, which comprises a solar chimney arranged on one side wall of the greenhouse, an outdoor air inlet at the lower end of the solar chimney, and an indoor air inlet whose upper end communicates with the upper end of the side wall of the wall; At the same time, it also includes a plurality of air supply outlets of different sizes arranged on the top of the greenhouse and an air exhaust outlet at the bottom of the wall on the other side of the greenhouse. Utilizing the thermal pressure effect of the solar chimney, hot air is sent to the shed through the indoor air inlet and the air outlet on the top of the greenhouse, which makes up for the lack of heat in the greenhouse in winter and provides a better growth microenvironment for fruits and vegetables. The temperature distribution in the shed is more uniform through the air outlets of different sizes. In addition, the air supply outlets with different sizes can also reduce the total pressure of the fan and reduce the energy consumption of the entire ventilation system.

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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