The temperature and humidity of constant temperature and humidity is very important for the laboratory. What are the factors that affect the temperature and humidity of constant temperature and humidity laboratory? In summary, there are several reasons:

I. improper selection of air conditioning: there are many common precision air conditioning brands, and the requirements for temperature and humidity are not high. The temperature fluctuation range is mostly ± 2 ℃, and the humidity fluctuation range is mostly ± 5%. For laboratories with higher temperature and humidity requirements, the common precision air conditioning obviously cannot meet the use requirements, so it is necessary to select the high precision constant temperature and humidity air conditioning with higher accuracy requirements.

2. Environmental partition: heat exchange with the outside world is the major factor that affects the temperature and humidity in the laboratory environment. For the overall partition and ceiling of the laboratory, the sandwich color steel plate is more than 50 mm thick, and the surface steel plate is more than 0.426 mm thick, so as to achieve better heat preservation and load-bearing. Double glazed windows shall be used; the laboratory shall be located as far away from the direct sunlight as possible; buffer room shall be provided in the environment.

III. air supply and return: in order to achieve uniform and stable temperature and humidity in the experimental environment, the selection of air supply and return mode is also very important. At present, the laboratory mostly chooses the way of upper air supply and bottom air return.

IV. fresh air supply: in order to ensure the normal breathing of laboratory testers, a certain amount of fresh air supplement shall be ensured in a sealed environment such as constant temperature and humidity. The temperature and humidity of the fresh air will have a great impact on the temperature and humidity of the environment. The design of the fresh air system is also of great importance to the constant temperature and humidity environment.

V. raised floor: selecting the raised floor can make the air return at the bottom of the air conditioner become a reality. At the same time, under the raised floor, the insulation layer is pasted on the floor to reduce the heat conduction with the ground. On the other hand, if the constant temperature and humidity chamber is built on a floor other than the first floor, it can avoid water leakage due to low ambient temperature and condensation on the floor of the first floor.

6. Buffer room: when the two doors of buffer room are opened at different times, the fluctuation of temperature and humidity caused by air exchange with the outside world is eliminated or reduced as far as possible.

7. Other factors: for example, more people's walking, heating instruments and equipment, etc. consider the above factors that are likely to cause constant temperature and humidity environment, build constant temperature and humidity laboratory, and try to avoid excessive heat exchange,

It is very important to choose the suitable model and brand and the design and construction unit of the laboratory with good after-sales service for the realization of constant temperature and humidity in the laboratory.