Computational fluid dynamics and energy prediction hybrid based greenhouse energy-saving control method

Abstract

The invention discloses a computational fluid dynamics and energy prediction hybrid based greenhouse energy-saving control method. The computational fluid dynamics and energy prediction hybrid based greenhouse energy-saving control method includes the steps of 1), establishing a CFD (computational fluid dynamic) model; 2), simulating an indoor temperature field cloud picture according to the CFD model; 3), judging priorities of work of sets of fan coils; 4), predicting greenhouse energy; 5), establishing optimized objective function of energy consumption; 6), performing sequential quadratic programming optimization calculation; 7), acquiring total input energy of each time period according to calculation results, and regulating flow of fed water and total opening number of the fan coils by means of a PID (proportion integration differentiation) algorithm according to the calculated total input energy. By the method, indoor temperature fields and greenhouse energy consumption of the greenhouse can be well simulated, and thermal environment and energy consumption inside a research laboratory can be effectively simulated; the method is free of limitation of hardware conditions of a greenhouse control system, and hardware cost of the control system is saved; the greenhouse temperature fields can be evenly distributed, heating and cooling energy consumption can be lowered, and operation cost can be lowered.

Description

technical field [0001] The invention relates to the field of temperature control in tall and large space buildings, in particular to a modern greenhouse energy-saving control method, in particular to a greenhouse energy-saving control method based on computational fluid dynamics and energy prediction. Background technique [0002] Facility agriculture is a concrete embodiment of modern agriculture, a symbol of a country's agricultural development level, and an inevitable requirement for high-yield, high-quality, and efficient agriculture. As an important part of facility agricultural production, greenhouse production industry has attracted more and more attention from people. The agricultural production of modern large-scale greenhouse facilities has an important dependence on energy conditions, and the energy consumption is generally high. Therefore, the energy-saving control method of the greenhouse is of great significance to alleviate the energy contradiction. [0003]...

AI Technical Summary

Problems solved by technology

The multi-zone independent control method is likely to cause uneven temperature distribution in the high-space greenhouse, and has the disadvantages of instability of the overall heating control system, low temperature control accuracy and slow response time in the greenhouse.

Images