November 14,2022

Representative project of high-precision constant temperature and humidity air conditioning project

Compared with comfort air conditioning, the task of constant temperature and humidity air conditioning is to control the indoor temperature, humidity cleanliness and airflow speed within a certain fluctuation range to meet the needs of industrial production, scientific research and other special occasions for indoor environment. He has accumulated rich experience in the design, construction, commissioning and operation of high-precision constant temperature and humidity system.

Typical constant temperature, constant humidity and purification items:

1. An optical laboratory has achieved high precision constant temperature of 20 ± 0.01 ℃ continuously day and night for the first time in China, and this project has won the second prize of the National Science and Technology Progress Award.

2. The precision artificial environment air conditioning project of Tsinghua University is a high-precision constant temperature and humidity purification system serving the national key project test. The cleanliness level is Class 1000, and the maximum temperature control accuracy is 22 ± 0.05 ℃; The relative humidity is 35~60% ± 3%. The project is a general contracting project. At present, the laboratory has been put into use, and the indoor environmental parameters meet the process requirements.

3. The reconstruction project of the constant temperature and humidity system of the Cesium Clock Laboratory of the Quantum Department of the Chinese Academy of Metrology, which is a national key laboratory of quantum metrology, with an indoor temperature of 23 ± 0.3 ℃ and a relative humidity of 30-60%. Due to the large capacity of electronic equipment in the room, the indoor thermal interference is very large. The project technically solves the interference problem of indoor unstable heat source, meets the indoor environmental parameters, and achieves the goal of stable temperature and humidity control.

4. China Aerospace Science and Technology Group 508 constant temperature and humidity laboratories. This project is a reconstruction project of the original 9 # factory building of 508 laboratories. Its characteristics are: a large space laboratory with an area of 248 square meters and a net height of 7 meters; High requirements for indoor environment - constant temperature accuracy 17 ~ 23 ℃± 0.2 ℃, constant humidity accuracy 45RH ± 10% RH, and it is a ten thousand level purification laboratory. In order to meet the process requirements, the whole purification and air-conditioning area is divided into four systems, of which two optical testing laboratories respectively use the air jacket system of the climate simulation room.

5. The constant temperature and humidity project of the national printing products testing center laboratory, which includes four laboratories, with a total area of 250 square meters

● National Printing Products Laboratory, temperature 23 ± 1 ℃, humidity 50 ± 2RH, large area, high humidity precision.

● National Decoration Products Laboratory, with a temperature of 25 ± 1 ℃ and a humidity of 65 ± 5RH, is a high humidity laboratory with large area and high humidity base.

● Chemical laboratory, temperature 23 ± 2 ℃, humidity 50 ± 5RH. The laboratory emits toxic gas during the experiment, which is to ensure the temperature and humidity as well as the ventilation capacity.

● Reliability laboratory, the room temperature rise rate required to be certified is 0.7~1 ℃/min

Other constant temperature, humidity and purification items:

High precision constant temperature project of Guangshan marking room of Beijing Optical Instrument Factory: the indoor temperature is 20 ± 0.01 ℃, reaching the international advanced level.

Constant temperature project of Petroleum Thread Measurement Center Building of China Academy of Metrology: indoor temperature: 20 ± 0.2 ℃, humidity: 50 ± 10%

High precision constant humidity project of Tianjin Knitting Station: relative humidity requirement: 30 ± 2% ~ 90 ± 2%

Artificial Climate Room of Tianjin Packaging Center

Air conditioning reform of physical and chemical constant temperature and humidity laboratory in Tianjin Packaging Center

Reconstruction of constant temperature room of metering institute

Technical Transformation of Constant Temperature and Humidity Air Conditioning System in 529 Factory

Automatic control system project of No. 207 ultra precision machining laboratory of No. 303 Institute

Reconstruction of Automatic Control System of Constant Temperature and Humidity Air Conditioning in the General Administration Archives

Automatic control system design of 514 energy-saving constant temperature and humidity laboratory of China Academy of Space Research

Air conditioning reconstruction project of metering thermostatic room in satellite assembly plant: temperature 20 ± 0.1 ℃, 20 ± 0.2 ℃, 20 ± 0.5 ℃, 20 ± 1 ℃

Air conditioning system design of a constant temperature and humidity laboratory of Beijing Institute of Fashion Technology: indoor temperature 22 ± 1 ℃, relative humidity 60 ± 2%

303 ultra precision laboratories of China National Aviation Corporation: indoor temperature 22 ± 0.1 ℃, relative humidity 50 ± 5%

High precision thermostatic air conditioner of Beijing Optical Instrument Factory: the project is a Guangshan marking room, with 1200 marking lines and a spacing of 2 microns. The indoor temperature was 20 ± 0.01 ℃, which reached the international advanced level and was completed in 1983. The system solved the requirements of temperature accuracy of ± 0.01 ℃ and relative humidity of ± 2%, and achieved the high precision constant temperature requirement of 20 ± 0.01 ℃ for 20 consecutive days and nights for the first time in China.

The reconstruction project of a constant temperature and humidity laboratory in Tsinghua University: the area is about 110m2, with two precision temperature control operation rooms, of which the net area of high-precision operation room is about 15m2, the net area of precision operation room is 13.6m2, and the rest areas are purification laboratories. The temperature accuracy reaches 22 ± 0.03 ℃. The relative humidity is less than 40%, and the relative humidity fluctuation is less than ± 3%. The commissioning will be completed in 2003.

The reconstruction project of a constant temperature and humidity laboratory of the clothing college: the area is about 60 square meters, the temperature accuracy reaches 22 ± 0.2 ℃, the relative humidity is less than 40%, and the relative humidity fluctuation is less than. The debugging was completed in 2003.

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