Indoor air conditioning system of clean workshop

Indoor air conditioning system of clean pharmaceutical cleanroom

During engineering design, the selection of a reasonable air-conditioning system should consider the use, scale, use characteristics of the building, changes in heat and humidity loads, parameters and requirements for temperature and humidity adjustment and control, the local weather conditions, energy conditions and The area and location of the air-conditioning room, initial investment...

Text label: clean workshop air conditioning system, air conditioning system, clean pharmaceutical cleanroom design and installation

Indoor air conditioning system for clean workshop

During engineering design, the selection of a reasonable air-conditioning system should consider the use, scale, use characteristics of the building, changes in heat and humidity loads, parameters and requirements for temperature and humidity adjustment and control, the local weather conditions, energy conditions and There are many factors such as the area and location of the air-conditioning room, initial investment and operation and maintenance costs; different use times, different air cleanliness requirements, different temperature and humidity bases, large differences in load characteristics, and the need for heating and cooling at the same time. Air conditioning systems should be set up in different rooms and areas; rooms with large space and many people, and technological air conditioning areas with small allowable fluctuations in room temperature and humidity, and high requirements for noise and cleanliness, should adopt all-air constant air conditioning System, in general, the all-air air-conditioning system should be a single-duct type; when the room is allowed to use a large supply air temperature difference or the indoor humidity is large, an all-air constant-air volume air-conditioning system with primary return air should be used. When it is required to use a small supply air temperature difference, the indoor humidity is small, and the relative humidity allows a large fluctuation range, the secondary return air system can be used; When the humidity fluctuation does not exceed the allowable range, a shared full-air constant air volume air conditioning system can be set up centrally; if centralized control is used, some rooms cannot meet the room temperature parameter requirements, but when the variable air volume or fan coil unit and other air conditioning systems can meet the requirements, It is not advisable to use a full air constant air volume air system with end reheating.

When the load changes greatly, multiple rooms share one air-conditioning system, and each room needs to adjust the indoor room temperature separately, especially for the air-conditioned rooms in the inner area that need to be cooled all year round, when the economic and technical conditions allow, it is advisable to use the full-scale air-conditioning system. VAV air conditioning system; when the allowable temperature and humidity fluctuation range of the room is small, or the noise requirements are strict, the variable air volume air conditioning system should not be used, and the variable air volume air conditioning system should be adopted, and the fan should be adjusted by variable speed; measures should be taken to ensure the minimum fresh air volume requirements; When the variable air volume terminal device is used, the air outlet with good diffusion performance should be used; for small and medium-sized air-conditioning systems, the variable refrigerant flow split air-conditioning system can be used when conditions permit. When it is necessary to operate all year round, a heat pump type unit should be used. In the same air conditioning system, when there are rooms that need to be cooled and heated separately at the same time, a heat recovery type unit should be used. Zhongjing Global Purification can provide consulting, planning, design, construction, installation, transformation and other supporting services for purification workshops and clean workshops.

The air-conditioning primary return air system is the most common air-conditioning system in the air-conditioning process. It combines the advantages of the DC system and the closed system. It can not only meet the hygiene requirements of indoor personnel, but also provide a certain amount of fresh air to the room. Air, and use return air as much as possible to save energy, but the primary return air system needs to use reheat to solve the problem of limited supply air temperature difference. In order to ensure the necessary supply air temperature difference, the primary return air system sometimes needs to be reheated in summer. heat, resulting in the phenomenon of counteracting cold and heat. The secondary return air system of the air conditioner divides the return air into two parts. The first part is directly mixed with the fresh air for cooling and heat treatment through the coil, and the second part is mixed with the treated air for the second time. The air reduces the temperature difference between the supply air and does not need to be reheated, which achieves the purpose of saving cooling capacity. The secondary air conditioning system is more energy efficient than the primary air return air conditioning system.

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