Multi-energy complementary cyclic utilization system for facility agriculture and application method

Abstract

The invention relates to a multi-energy complementary cyclic utilization system for facility agriculture and an application method. The multi-energy complementary cyclic utilization system intelligently and uniformly dispatches electric power from a wind power generation system, a municipal power grid, a fuel gas distributed generator set and a solar power generation system to supply production and household electricity; the gas distributed generator set generates power by adopting municipal gas or biogas from a biogas digester; the flue gas waste heat of the fuel gas distributed generator setprovides heat energy for a planting greenhouse, a biogas digester, livestock and poultry breeding and aquaculture; the solar power generation system is arranged on the roof of a planting greenhouse,wherein the planting greenhouse provides green feed for livestock and poultry breeding and aquaculture, and the planting greenhouse, the livestock and poultry breeding and the aquaculture jointly provide biogas raw materials for the biogas digester; and the biogas digester provides biogas for the fuel gas distributed generator set and provides fertilizers for the planting greenhouse at the same time.

Description

technical field [0001] The invention belongs to the field of energy supply, and in particular relates to a multi-energy complementary recycling system and application method for facility agriculture. Background technique [0002] Facility agriculture is the comprehensive application of engineering equipment technology, biotechnology and environmental technology. Through the use of certain facilities and devices, according to the best environment required by the growth and development of animals and plants, local areas improve or create environmental meteorological factors, so that plants or animals can get the best results. Production methods with the best growth environment, such as greenhouses, greenhouses, agricultural factories, factory farms, etc. [0003] To achieve and maintain the best growth environment for animals and plants in facility agriculture, it needs to consume a lot of energy such as electricity, heat, and cooling. Energy costs account for about 15% to 40%...

AI Technical Summary

Problems solved by technology

[0013] (1) Solar energy: Due to the influence of geographical location, seasons, rainy days, nights or special weather and other environments, the energy production and supply of solar energy is intermittent and cannot be guaranteed continuously; low conversion efficiency;

[0014] (2) Wind energy: The utilization of wind energy is severely restricted by geographical location, coupled with the intermittent nature of wind power, instability, low conversion efficiency, and large footprint;

[0016] (4) Ground source heat pump: First, ground source heat pumps need to consume municipal power to drive air-conditioning equipment, and the main source of municipal power is coal power, so it will increase CO 2 and pollutant emissions; secondly, the southern region is mainly used for cooling, mainly injecting heat into the ground; while the northern region has a large demand for heating in winter, mainly injecting cold into the underground, so after the system is in operation all year round, the underground temperature will be unbalanced. The efficiency of the system is reduced, which affects the surrounding ecology; third, due to the need to drill wells underground, there must be enough area for drilling and laying pipes; fourth, because it involves drilling, installation, etc., its construction cost is high It is nearly 40% lower than conventional air conditioners; fifth, due to the more complex structure of ground source heat pumps, the requirements for design, construction, and construction site management are relatively high. Once the underground equipment fails, it cannot be repaired, and it can only be discarded or re-drilled;

[0017] (5) The type of energy is single, and the guarantee factor is low: the renewable energy in facility agriculture currently has a single type of energy, and most of them only use one type of renewable energy, such as agricultural photovoltaic complementary, biogas boilers, etc.; once there is a problem with renewable energy When there is no backup energy, it is impossible to guarantee the security of power, cooling and heat supply in agricultural greenhouses

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