Method for controlling temperature and humidity of solar drying room precisely

Abstract

The invention discloses a method for controlling temperature and humidity of a solar drying room precisely, which includes the following steps: A. collecting room temperature T1 of the drying room, air outlet temperature T2 of a solar air heat collector and room temperature M of the drying room; B. judging whether T1 is not smaller than a first set value a, judging if M is smaller than a second set value c, and if T1 is not smaller than the first set value a and M is smaller than the second set value c, closing a solar heat collecting device, an auxiliary heating device and an electric air door of a dehumidifier, and executing the step A repeatedly; otherwise entering next step; C. judging whether T2-T1 is not larger than a third set value b, judging whether M is smaller than a set value c simultaneously, and if T2-T1 is not larger than the third set value b and M is smaller than the set value c, a circulating fan is closed, the solar heat collecting device does not work, and the step A is repeated; otherwise entering next step; and D. starting the circulating fan, exchanging air of the drying room through the solar heat collecting device, and repeating the step A. The method for controlling the temperature and the humidity of the solar drying room precisely judges outdoor and indoor humidity timely, achieves linkage control of all drying devices, and can precisely control the temperature and the humidity in the drying room.

Description

technical field [0001] The invention relates to a method for automatically controlling the temperature and humidity of a solar drying room. Background technique [0002] The basic structure of the solar drying room is: the solar heat collecting equipment composed of the solar air heat collector, the circulation fan and the circulation pipe heats the air, and the hot air output from the air outlet of the solar air heat collector enters the drying room and is drawn away. The air in the drying room enters the air inlet of the solar air heat collector for reheating, thus forming an independent air heating circulation system, and the solar air heat collector realizes air circulation and communication with the drying room through a circulating fan. In the case of insufficient light such as cloudy and rainy days, the drying room supplements the indoor temperature through the auxiliary heating device, so as to realize the drying and dehumidification of the target object around the c...

AI Technical Summary

Problems solved by technology

[0006] The humidity control method of the aforementioned solar drying room does not consider the actual demand of material drying, and only controls the opening and closing of the electric damper according to M. In the case of continuous cloudy and rainy days, the ventilation in the solar drying room is often poor, and the materials are easy to deteriorate and rot, which is economical for users. big loss

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