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近几年来我们对某些老厂空调控制系统进行了技术改造。具体做法是:在调节器方面,采用TA型调节器配热敏电阻,简化了调节系统,提高了控制精度;在控制系统方面,将层层收敛的多级控制加热器(包括高精度系统)改成一级控制;夏天取消先降温、再升温的露点调节环节,改用调一、二次回风风量比来控制室温,尽量利用回风的余热代替多级加热装置。
In recent years, we have carried out technological transformations on certain old plant air conditioning control systems. The specific approach is: In terms of regulators, the use of TA-type regulators with thermistors simplifies the adjustment system and improves the control accuracy; in terms of control systems, multi-level control heaters (including high-precision systems) that converge in layers Changed to a control; summer to cancel the first cooling, reheating the dew point adjustment link, use the first and second return air volume ratio to control the room temperature, try to use the return heat of waste heat instead of multi-stage heating device.