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ventilation system's main function is to eliminate laboratory space harmful gas,steam,dust,and input the treatment ofresh air,createa comfortable and healthy laboratory

work environment.According to its function,these can be divided into comprehensive ventilation,local ventilation,mixing ventilation.

Comprehensive ventilation:Air comprehensively exchange in the whole room.lfpests in large range produce and spread all overroom,it is necessary to have a comprehensive ventilation,to discharge harmful gas,or for a large number of fresh air,the harmful gasconcentration dilution to allow within concentration.

Local ventilation:Foul air or harmful gas will draw out directly from the spare parts,prevent spreading whole room;0Or the fresh airwill send to a certain local areas.improve local environmental conditions.When the shop in some equipment produce a lot of harmfulgas to human health,when the overall ventilation cannot dilute to allow concentration or comprehensive ventilation is not economic.local ventilation can solve.

Mixing ventilation:refers to with the comprehensive supply and local exhaust,or comprehensive exhaust and locaol supply air mixingventilation form.

>ͨ�Lϵ�y���g���� The technical parameters of ventilation system

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General parameters:

1.����ҵ�ͨ�L�Q��Δ�ÿС�r8-20�Ρ�

2.֧�܃��L����ȡ6-12m/s��ǧ�܃��L��ȡ8-14m/s��

3,ͨ�L�O���OӋ�L��:

���_1500�Ŷ����OӋ���L����1500m3/h;

���_1800�Ŷ����OӋ���L����1800m3/h;

���_�f���ş����OӋ���L����200~300m3/h;

���_300x300mm���L���OӋ���L����800m3/h��

ͨ�L��ҕ���������ӕr�����L��ʼ�K������0.4~0.6m/s

ϵ�y�����е͉�ϵ�y:500<P��1500��

1.The lab ventilation exchanges air take 8-20 times perhour.

2.A tube wind take 6 to 12m/s, dry wind pipe take 8 to 14 m/s.

3.Ventilation equipment design volume:

*Single 1500 detoxification hood design air output for 1500 m/h;

*Single 1800 detoxification hood design air output for 1800 m/h;

*Single 300x300mm convulsions cover design air output for 800m/h,

shall not be less than 800m/h.

The cabinet height of the detoxification hood is 35-40cm, and surface wind speed of cupboard door keep 0.5m/s, The ventilation system are in low voltage system:500<P��1500

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1���L�CҪ��

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2����·�OӋҪ��

�L���x��PP/PVC��ȼ���|���L�ܺ�ȷ����е͉��L�ܼ��gҪ�󡣈A�ܲ��óв巽ʽ�B�ӣ����ܲ��÷��m�B�ӡ�

3����•�OӋ

�ٸ����������P�˜ʣ���•횿�����62dB[A)��

����•���M�ߴ��c�L�C��һ�¡���•�Ӻ�Ȳ�С��50mm��

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Ventilation system requirements:

l, fan requirements

lab ventiaionsystem fan are all made of glass fiber reinforced plastic centrifugal fan,using Atransssionusingglass fiber reinforced plastic centrifugal fan,the efficiency ishigh.the curve smooth performance is stable and reliable,and easy maintenancecorrosion resistance,long service life,

2.pipeline design requirements

uipeall pnesi pressurethan 50pa,eothe low

pressure pipeline.Iln accordance with the relevant national standards.yipPvCmateri.the main ductrem thick.branch

mm thick Circular Pvc pipe usingu-n way PvCsquare tube

sinfangemode,acrdn to the actual situationaso can use card wayconnection.

3,noise design

��According to the national standard,noise must be controlled under 62 db(A)

Muffler import size and fan export agreement.Anechoic layer thickness not less than 50mm.3 Muerbulnool othand superfine glass sound-absorbingon,stainess

steel wire mesh reinforcement mark anechoic material is not easy to damage and air blowawayprolongtheseviceifeofmufier.WMthitsanticorosiveaction