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随着工业现代化高速发展,各种生产、科研对室内温湿度、洁净度、噪声、振动等空调技术提出了更严格的要求。例如现代计量仪表中测试精度要求较高的“双频激光干涉仪”就要求室温保持20°±0.1℃的恒温条件。在恒温系统中要控制空气的温度与相对湿度这两个参数。当空气温度值变化范围不大时,这两个参数几乎是成比例的波动着,但过去人们对空气相对湿度的波动是不大重视的,以为有“露点控制法”一切就都解决了。其实“露点控制法”有局限性,它在空气相对湿度的控制上产生难以克服的静差与
With the rapid development of industrial modernization, various production and scientific research put forward more stringent requirements for indoor air temperature and humidity, cleanliness, noise, vibration and other air conditioning technologies. For example, the “dual-frequency laser interferometer” requiring high test accuracy in modern metering instruments requires a constant temperature of 20°±0.1°C at room temperature. In the constant temperature system, the two parameters of air temperature and relative humidity are to be controlled. When the range of air temperature changes is not large, these two parameters fluctuate almost proportionally. However, in the past, people did not attach much importance to the fluctuation of relative humidity of air, thinking that there was a “dew point control method” and everything was solved. In fact, the “dew point control method” has its limitations. It produces insurmountable static differences in the control of air relative humidity.