Design requirements for air conditioning system in purification workshop

Design requirements for air conditioning system in purification workshop

The general regulations for the design and layout of the air conditioning system in the purification workshop are as follows:

1. Conditions for setting up air conditioners in purification workshops

Setting air conditioning can improve people's labor and work efficiency, thereby increasing economic benefits; in terms of high temperature work, it is beneficial to slow down physical energy consumption. right...

Text label: Purification air conditioning system design, purification workshop air conditioning system standard

Design requirements for air conditioning system in purification workshop

The general regulations for the design and layout of the air conditioning system in the purification workshop are as follows:

1. Conditions for setting up air conditioners in purification workshops

Setting air conditioning can improve people's labor and work efficiency, thereby increasing economic benefits; in terms of high temperature work, it is beneficial to slow down physical energy consumption. For the purification workshop of basement equipment with large heat generation, if the ventilation method is used to cool down, the investment in the ventilation system is large, and it is difficult to set the air inlet and exhaust port, and it is often more economical to use simple air conditioning equipment to achieve the purpose of cooling.

The air conditioning system should be installed when one of the following conditions is met:

(1) Heating and ventilation do not meet human comfort standards or indoor heat and humidity requirements;

(2) The heating and ventilation cannot meet the requirements of the process for the indoor temperature, humidity and cleanliness of the purification pharmaceutical cleanroom;

(3) Although heating and ventilation can achieve human comfort and meet the requirements of indoor heat and humidity environment, it is not economical;

(4) It has a significant effect on ensuring physical health, promoting recovery or improving labor productivity and economic benefits.

2. Energy saving principles of air conditioners

For process air conditioning, it is advisable to take economical and effective local process measures or local area air conditioning instead of whole room air conditioning to achieve the purpose of energy saving. Under the condition that the process requirements are met, the area of u200bu200bthe air conditioning area and the heat dissipation and moisture dissipation equipment should be reduced; when the local air conditioning or the local area air conditioning can meet the requirements, the whole room air conditioning should not be used.

In the purification workshop with tall space, when only the lower area is required to maintain a certain temperature and humidity, the airflow organization method of layered air supply or lower air supply should be adopted.

3. Differential pressure in the air conditioning area

Maintaining positive pressure in the air conditioning area can prevent the infiltration of outdoor air, which is beneficial to ensure that the cleanliness of the purification workshop and indoor parameters are less disturbed by the outside world. For technological air conditioning, it should be determined according to the process requirements; for comfort air conditioning, when the pressure difference between the air conditioning area and the outdoor area or the pressure difference between the air conditioning areas is required, the pressure difference value is 5~10Pa.

Comfortable air-conditioning indoor positive pressure should not be too small or too large. When the indoor positive pressure is 5Pa, the wind speed is equivalent to 2.

85m/s. That is to say, when the average outdoor wind speed is less than 2.

At 85m/s, the positive pressure value of 5Pa can generally meet the requirements. When the indoor positive pressure value is 10Pa, the air volume required to maintain the indoor positive pressure is about 1.0~1.5 air changes per hour, and the fresh air volume of comfort air conditioning can generally meet this requirement. When the indoor positive pressure value exceeds 50Pa, it will make the human body feel uncomfortable, and it is necessary to increase the fresh air volume, increase the energy consumption, and it is difficult to open the door at the same time.

4. Layout requirements of air conditioning area

Air conditioning areas should be arranged centrally, and air conditioning areas with similar indoor temperature and humidity bases and usage requirements should be arranged adjacent to each other. This is to reduce the amount of thermal insulation works on the outer walls of the air-conditioning area, the inner walls and floors adjacent to the non-air-conditioning area, and reduce the cooling and heating loads of the system, so as to reduce the construction investment and future operation of the air-conditioning system. Management costs. Zhongjing Global Purification can provide consulting, planning, design, construction, installation and transformation of clean workshops and purification workshops and other supporting services.

If it is one of the following situations, it is advisable to set up an air conditioning system:

(1) Air-conditioned areas with different usage times;

(2) Air-conditioned areas with different temperature and humidity bases and allowable fluctuation ranges;

(3) Air-conditioning areas with different requirements for air cleanliness; when it must be the same system, the areas with high cleanliness requirements should be treated locally;

(4) Noise standard requires different air-conditioning areas, as well as air-conditioning areas with noise reduction requirements and noise; when it must be divided into the same system, local treatment should be done;

(5) Air-conditioned areas that need to supply heating and cooling separately at the same time period;

(6) For areas containing special substances in the air, the air-conditioning system should be set up independently.

5. Outer door setting in air-conditioned area

The exterior doors of the comfortable air-conditioned area where people frequently go in and out shall meet the following requirements:

(1) Door buckets, revolving doors or spring doors should be installed, and the outer door should avoid the wind direction with high frequency in winter; when it is unavoidable, measures should be taken to prevent wind penetration such as hot air curtains or hot and cold air curtains , or set up lower heating facilities such as radiators, vertical fan coil units, and floor radiant heating in severe and cold areas;

(2) The outer door of the purification workshop should be tight; when the temperature difference between the two sides of the door is greater than or equal to 70℃, a thermal insulation door should be used.

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