Intelligent greenhouse and environmental control method of using greenhouse effect for heat collection and fan coils for heat exchange

Abstract

The invention discloses an intelligent greenhouse and environmental control method of using the greenhouse effect for heat collection and fan coils for heat exchange. The greenhouse is a multi-unit combined light-transmissive greenhouse with a highly overhead structure and comprises fan coil devices which are arranged at the middle-upper portions of the greenhouse, wherein each fan coil device integrating a heat exchanger and a wet curtain comprises a high-air-volume low-air-pressure fan and is provided with an inner water circulation pipe and an outer water circulation pipe, and the fan coildevices are connected to a heat storage pool through one water supply and return pipe. Two curtain layers are arranged above and below the devices respectively. An intelligent control system is designed, the greenhouse is closed for keeping warm in the cold season, the fans are started, internal water circulation of the coils is enabled, the solar heat is accumulated into water during daytime, andcrops are supplemented with CO2 gas fertilizer; the solar heat in the water is released into the air during nighttime. The greenhouse is opened for ventilation in the hot season, the fans are started, and external water circulation is enabled; the ventilation cooling effect is improved through evaporation and heat absorption on the surfaces of the heat exchangers. The problem that the cost is toohigh when existing methods are adopted for regulating the greenhouse environment is solved in an environment-friendly low-carbon mode, the remarkable effects of increasing the production, improving the quality, reducing the consumption of drugs and saving water are achieved, and transformation and upgrading of facility agricultural production modes are facilitated.

Description

technical field [0001] The invention belongs to the technical field of temperature control of greenhouses, and in particular relates to an intelligent environment-controlled greenhouse and a control method that utilizes greenhouse effect heat collection and coil heat exchange with simple structure and is easy to implement and operate. Background technique [0002] Agricultural production is often rigidly constrained by adverse climates such as low temperature and frost, drought and little rain, and little sunshine. It has been difficult to get rid of the trouble of "depending on the weather" to varying degrees since ancient times. The rise of facility agriculture and greenhouse agriculture has enabled people to overcome the impact of adverse climate to a large extent, especially greenhouse heating and supplementary radiation measures have enabled off-season high-efficiency production to be realized. However, the heating process of the greenhouse is highly dependent on fossil...

AI Technical Summary

Problems solved by technology

In order to obtain high-yield and high-quality effects, heating is often necessary, but the economy of fossil fuels is poor, and it is difficult to expand the application area

The air heating that has been promoted in recent years is indeed more environmentally friendly than fossil fuels, but there are also problems such as high one-time investment, high energy consumption, and a sharp drop in energy efficiency ratio during low temperature hours at night.

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