Principle of constant temperature and humidity air conditioning

Constant temperature and humidity air conditioning is a kind of process air conditioning. Usually, we call the air conditioner with strict requirements on indoor temperature and humidity fluctuation and regional deviation control as constant temperature and humidity air conditioner. Constant temperature and humidity are widely used in electronics, optical equipment, cosmetics, medical care, biopharmaceuticals, food manufacturing, various metrology, testing and laboratory industries. [ 1]

Chinese name

Constant temperature and humidity air conditioner

Foreign name

Constant temperature and humidity air conditioner

application area

Electronics, optical equipment, cosmetics and other industries

quick

navigate by water/air

Requirements of architecture and consideration of system form.

Equipment introduction

The temperature and relative humidity determined by the air-conditioned room (or area) according to the process requirements are called the air-conditioned temperature and relative humidity base. The temperature and relative humidity of air-conditioned room (or area) deviate from the maximum difference (δt and

) is called air conditioning accuracy, which is the fluctuation range. Some special technological processes or scientific experiments require that the variation deviation and regional deviation of temperature and humidity be small. For example, the winding process of nylon filament requires temperature of 23℃, fluctuation ≤0.5℃, relative humidity of 765438 0%, fluctuation ≤ 5%; Another example is the high-precision calibration machine in the mechanical industry, which requires 20℃ (0. 1 ~ 0.2)℃. Constant temperature and humidity air conditioner has the requirements of both temperature and humidity base and air conditioning accuracy, for example, t = 23℃ 0.5℃,

= 7 1% 5% and so on. Some processes may only require constant temperature, but the humidity should be within a certain range. For example, the temperature of Class I coordinate boring machine should be kept at 20℃ 1℃ in winter and summer, and the relative humidity should be 40%~65%. However, some processes have strict requirements on relative humidity, such as the physical examination room of man-made fiber factory, where the relative humidity is 65% 3% and the temperature is 20℃ 2℃. At this time, although the precision of temperature control is not high, temperature fluctuation will cause relative humidity fluctuation. At 20℃, the temperature fluctuation is 65438 0℃ and the relative humidity fluctuation is about 4%, which is beyond the fluctuation range of relative humidity, so this air conditioner must control the temperature accuracy at the same time.