Phase change waste heat recovery ventilator for solar greenhouse

Abstract

The invention discloses a phase change waste heat recovery ventilator for a solar greenhouse. The phase change waste heat recovery ventilator for the solar greenhouse comprises a composite phase change heat exchange box. A heat exchange fin tube and an axial flow fan are arranged in the composite phase change heat exchange box, wherein the axial flow fan is arranged on one side of composite phase change heat exchange box, the heat exchange fin tube is arranged on the other side of the composite phase change heat exchange box, an inner wall of a composite phase change heat exchange box body is provided with communicated cavities, fluid composite phase change heat storage materials are arranged in the cavities, and the fluid composite phase change heat storage materials flow freely in the cavities of the inner wall of the box body. An upper cavity and a lower cavity of the composite phase change heat exchange box body are communicated through the heat exchange fin tube, and the inner wall of the composite phase change heat exchange box which is below the heat exchange fin tube is further provided with a condensation gutter. The phase change waste heat recovery ventilator for the solar greenhouse is suitable for installation in a greenhouse building, is matched with the growth level of the plants in the greenhouse and greatly improves the building performance and the production capacity of the solar greenhouse. The phase change waste heat recovery ventilator for the solar greenhouse is reasonable in structure, compared with an existing greenhouse, the cost is not increased, and the thermal storage and heat preservation standards of the greenhouse can be improved greatly.

Description

technical field [0001] The invention relates to a ventilation fan for a solar greenhouse, in particular to a phase change waste heat recovery ventilator for a solar greenhouse that can utilize composite phase change materials to efficiently recover waste heat from ventilation and ventilation. The phase change waste heat recovery ventilator can be used in While performing ventilation, the heat of the exchanged air is collected, and then the heat is stored in the greenhouse through internal air convection, so that the thermal insulation performance of the solar greenhouse can be greatly improved without affecting the ventilation performance of the greenhouse. Background technique [0002] Ventilation is very necessary for the normal operation of the solar greenhouse. The main reason is that the temperature of the greenhouse is too high or the humidity is too high. The introduction of external air can reduce the indoor temperature or reduce the indoor humidity. Another very imp...

AI Technical Summary

Problems solved by technology

[0003] At present, conventional solar greenhouses are ventilated by the natural ventilation of the front roof vents and roof vents, and some high-end solar greenhouses use fans for ventilation. When a large amount of heat is taken out of the greenhouse, resulting in poor heat storage conditions in the greenhouse

Sufficient energy is provided by solar radiation, but due to the problem of heat storage means, a large amount of heat energy cannot be effectively stored in the solar greenhouse, which leads to a serious shortage of the overall thermal insulation performance of the solar greenhouse

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