Intelligent temperature and humidity control method for closed circulation heat pump tobacco curing barn

Abstract

The invention discloses an intelligent temperature and humidity control method for a closed circulation heat pump tobacco curing barn, which comprises the following steps of: (1) starting a closed circulation heat pump system, and setting a target dry bulb temperature Tdset and a target wet bulb temperature Twset, (2) detecting a dry bulb temperature and a wet bulb temperature in a tobacco loadingchamber, and comparing the dry bulb temperature and the wet bulb temperature with the target dry bulb temperature Tdset and the target wet bulb temperature Twset to realize starting and stopping of acompressor and switching control of heating and dehumidifying modes. In combination of control on auxiliary electric heating equipment, the compressor starting dry bulb temperature control amplitudedifference A1, the compressor stopping dry bulb temperature control amplitude difference A2, the compressor wet bulb temperature control amplitude difference A3 and the electric heating starting dry bulb temperature control amplitude difference A4 are creatively combined, and thus the compressor can be reasonably started and stopped and can be switched between the heating mode and the dehumidifying mode, the temperature and the humidity of the curing barn are ensured to be matched with the target temperature and the target humidity, the temperature and the humidity are both considered, the control effect is good, and high market application and popularization prospects are achieved.

Description

technical field [0001] The invention belongs to the technical field of heat pump barns, and in particular relates to an intelligent control method for temperature and humidity in a closed cycle heat pump barn for tobacco leaves. Background technique [0002] Tobacco barns include coal-fired barns and heat pump barns, and heat pump barns are further divided into open cycle heat pump barns and closed cycle heat pump barns. The open cycle heat pump barn generally only has the functions of heating and external humidity removal. The heat pump heats and heats the air and sends the high-temperature air into the tobacco chamber through the action of the circulating fan to achieve the purpose of heating the tobacco leaves. The heating of the tobacco leaves causes the internal moisture to evaporate into the smoking room. When the relative humidity of the air in the smoking room is higher than the set value, the cold air door is opened, and the external fresh and dry air enters the smo...

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the problem that the temperature and humidity in the tobacco room of the existing closed cycle heat pump tobacco leaf curing room are difficult to meet the needs of tobacco leaf curing at the same time, and proposes an intelligent control method for the temperature and humidity of the closed cycle heat pump tobacco leaf curing room

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