Constant temperature and humidity system
Notion
Constant temperature and humidity system is through a variety of technical means to a range of temperature and humidity control at a set point and allowed to volatility and regional bias a special system to meet the various environmental specification standards.
Classification
classification temperature humidity Application Industry Laboratory normal temperature 18℃-28℃ 45%-70% Textiles, paper, paint, and other precision manufacturing Cryogenic Laboratory 5℃-18℃ 45%-70% Film preservation, pharmaceutical research, biological cultivation High-temperature Laboratory 30℃-80℃ 40%-95% Electronic products, High-temperature or high temperature and humidity aging test
3.Part of the industry testing standards
sub option | paper | Textiles | plastic | paint | precision manufacturing |
temperature | 23±1℃ | 20±1℃ | 20±1℃ | 23±2℃ | 20±0.1(0.5)℃ |
Relative humidity | 50±2% | 65±2% | 50±3% | 50±5% | 45-75% |
Cycles | 15~30次/h | 15~30次/h | 15~30次/h | 15~30次/h | 15~30次/h |
Air flow rate | ≤0.3m/s | ≤0.25m/s | ≤0.3m/s | ≤0.3m/s | ≤0.3m/s |
New supplementary air | ≥0.5m2/人.分 | ≥0.5m2/人.分 | ≥0.5m2/人.分 | ≥0.5m2/人.分 | ≥0.5m2/人.分 |
noise | ≤55dB | ≤55dB | ≤55dB | ≤55dB | ≤55dB |
National standard | GB10739 | GB6529 | GB/T2918 | GB9278 | |
International standard | ISO187 | ISO139 | ISO291 | ISO3270 |
4.Planning Points
According to constant temperature and humidity Laboratory operational features: an independent system, the amount of wind, a unique air distribution, heat sealed space, etc., summed up the following planning points overall design of constant temperature and humidity
1.Safety Engineering | 12.Static, vibration and noise |
2.Temperature and humidity control accuracy and range | 13.Equipment space and air-conditioned rooms |
3.Clean extent requirement | 14.Arrangements for access routes and changing the buffer |
4.Illumination requirements | 15.Enough space for maintenance |
5.Amount heat and moisture range of the equipment | 16.Interior clear height and floor load |
6.Air conditioning back to the wind | 17.Pollution, pollution and disaster prevention |
7.Air pressure balance | 18.Installation and operating costs of the measure |
8.Introduction of new wind | 19.Aesthetic requirements |
9.Exhaust system | 20.Installation cost / schedule control |
10.Heat preservation and insulation measures | 21.Operating costs |
11.Configuration Facility and of power | 22.Maintenance & elasticity factor |