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How to calculate the number of ventilation times in industrial production workshops(necessary for selecting new wind cabinets)
Reference to the number of ventilation times in industrial production workshops:
1. Definition of the number of ventilation times: The number of ventilation times(times / hours) = the total indoor air supply(m/ H) (indoor area(M2) × indoor height(M));
2. The general environment requires a change of wind of 25 to 30 hours/hour;
3. In densely populated public places, the amount of wind required is 30 to 40 / hour;
4. There are densely populated and high-temperature places or production workshops, requiring a change of wind of 40 to 50 / hour;
5. High temperature and severely contaminated production workshops require 50 to 60 air exchange hours;
6. In the humid South, the number of ventilation should be increased appropriately, while in the hot and dry North, the number of ventilation can be reduced appropriately.
Regarding clean room workshop air change times should also refer to clean room grade reference table.
The calculation method of the number of new wind cabinets:
1. The number of units used = the volume of the site × the number of times of air exchange and the actual air supply of the unit;
2. The post wind should be selected according to the actual situation, and the total wind volume can be appropriately reduced;
3. The indoor air supply pipeline must match the type of air conditioner and design a suitable air supply pipeline according to the actual installation environment and the number of air outlets.
4. Definition of the number of ventilation times: Number of ventilation times(times / hours) = total indoor air supply(M3 / H) /(indoor area(M2) * indoor height(M)
Number of units used =(site volume * number of ventilation times) / actual wind volume of unit
The post wind should be selected according to the actual situation, and the total wind volume can be appropriately reduced.
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工業廠房換氣次數參考表： |
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Example of the calculation of the number of new winds:
A computer room area S = 60(M2), net height H = 3(M), person N = 10(person)
1. If calculated according to the amount of new wind required per person, the new wind volume Q1 = n.q = 10 * 70 = 700(M3 / H). (Take the new wind quantity Q = 70(M3 / H) per person);
2. If the number of new air changes in the room is calculated, the number of new air changes in the room P = 5(sub/h), the new air volume Q2 = q.n = 5 * 60 * 3 = 900(M3 / H).
Due to Q2 &;; Gt; Q1, so Q2 is taken as the basis for setting options.
Ventilation times of residential and public buildings:
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Room Name |
Number of ventilation times(times / H) |
Room Name |
Number of ventilation times(times / H) |
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Residential, dormitory bedroom General hotel, hotel bedroom A fine hotel, a hotel bedroom. Residential kitchen Shop Office File Library Waiting room |
1.0 0.5 1.0 1.0 3 1.5 0.51 3 |
Nursery Activity Room School classrooms Library, Reading Room student dormitory Library Reporting Hall Library Library Underground parking garage |
1.5 |
Contact: manager.zhan
Phone: 15928853231
Tel: 028-87849573
Email: 2541565040@qq.com
Add: Chengdu Gaoxin West District Science and Technology Park
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