How does a constant temperature and humidity laboratory achieve temperature and humidity standards?

Release time:

2025-02-13 10:33

In many fields such as scientific research and production,constant temperature and humidity laboratoryplay a crucial role. So, how does a constant temperature and humidity laboratory achieve temperature and humidity standards?

Building envelope structure

The building envelope structure of a constant temperature and humidity laboratory is the fundamental line of defense to ensure stable indoor temperature and humidity. The walls, roof, and floor of the laboratory are usually made of materials with excellent thermal insulation properties, such as rock wool sandwich color steel panels. This material has outstanding insulation performance, effectively reducing the impact of external temperature fluctuations on indoor temperature and humidity, lowering the energy consumption of the air conditioning system, and thus enhancing the stability of temperature and humidity control. At the same time, doors and windows must have good sealing performance to prevent the exchange of indoor and outdoor air, avoiding changes in temperature and humidity due to air convection. For example, if the sealing performance is poor, in the hot summer, outdoor hot air may seep indoors, raising the indoor temperature and affecting humidity, thereby disrupting the constant temperature and humidity environment.

Air conditioning system

The air conditioning system is the core part of controlling temperature and humidity in a constant temperature and humidity laboratory, which includes cooling, heating, dehumidification, and humidification systems. Different types of air conditioning systems vary in terms of temperature and humidity control accuracy, stability and reliability, air handling capacity, energy efficiency, and convenience. For example, common combined air conditioning units can flexibly configure various functional segments according to the specific needs of the laboratory to achieve precise temperature and humidity control; while direct expansion air conditioning units have advantages such as easy installation and small space occupation. In practical applications, it is necessaryfor professional service providers to select models based on the specific needs of the laboratory.For example, for scientific research laboratories with extremely high precision requirements for temperature and humidity, higher precision constant temperature and humidity air conditioning units may be selected; while for some production-type constant temperature and humidity laboratories with higher energy efficiency requirements, energy-saving air conditioning systems may be chosen.

Ventilation system

The ventilation system is also indispensable for constant temperature and humidity laboratories. By reasonably arranging the supply and return air outlets, good circulation of indoor air can be achieved, ensuring uniform temperature and humidity in all areas of the room. At the same time, introducing a certain amount of fresh air is key to maintaining indoor air quality and meeting the breathing needs of laboratory personnel. However, fresh air must undergo strict pretreatment before entering the laboratory, including filtering, temperature and humidity adjustment, etc., to meet the temperature and humidity requirements of the laboratory. For example, in winter, the outdoor fresh air temperature may be low, and the humidity may not meet the requirements. After pretreatment, the fresh air can be heated and humidified to an appropriate temperature and humidity range before being sent indoors, avoiding impact on the indoor environment.

Control system

The control system is the brain of the constant temperature and humidity laboratory for achieving precise temperature and humidity control. It monitors indoor temperature and humidity data in real-time through temperature and humidity sensors and transmits this data to the intelligent controller. The intelligent controller automatically adjusts the operating parameters of the air conditioning system, such as cooling capacity, heating capacity, humidification amount, and dehumidification amount, based on the preset temperature and humidity range, to ensure that temperature and humidity are always maintained within the set range. For example, when the temperature and humidity sensor detects that the indoor temperature is too high, the intelligent controller will automatically increase the cooling capacity of the air conditioning system to lower the indoor temperature; when the humidity is too low, it will control the humidification system to increase the humidification amount, raising the indoor humidity.

Airflow organization form

Airflow organization forms, such as the commontop supply and bottom return,top supply and side returnetc., play an important role in the uniform distribution of temperature and humidity in constant temperature and humidity laboratories. By optimizing airflow organization, it is possible to effectively avoid dead zones and areas with uneven temperature and humidity. Taking top supply and bottom return as an example, the air supply outlet is located at the top of the laboratory, evenly delivering treated air into the room, while the return air outlet is located on the ground, which can promptly return indoor air to the air conditioning system for reprocessing. This method allows for a more ideal circulation of indoor air, ensuring uniform distribution of temperature and humidity in space.

In summary, constant temperature and humidity laboratories achieve and maintain temperature and humidity standards through the collaborative effects of building envelope structure, air conditioning system, ventilation system, control system, and reasonable airflow organization, providing stable environmental conditions for scientific research, production, and other activities.

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