references
Hysys®: the Aeraulic solution
HYSYS®
SIZING
Exhaust air
AID FOR THE AIR DUCT NETWORK
Return air Supply air
Fresh air
FLOWAY
Diameter Qv (x103 m3/h) 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 11 12 12.5 13 Duct Ø 315 214 67 27 Ø 355 107 48 29 Ø 400 200 91 52 34 Ø 450 167 94 63 44 32 Ø 500 300 158 107 73 53 43 35 27 Ø 630 231 188 136 111 91 75 63 54 48 Ø 710 273 214 176 136 120 103 91 79 71 63 56 Ø 800 300 250 214 188 158 136 125 111 100 91 81 70 58 54 Ø 900 300 261 222 200 182 167 150 125 107 97 88
Room to be treated: Office R1 pack, opening of fresh air outlets based on presence detector, room by room
14
15
77
68
Presence
Fresh air intake on CU
Meeting room R+ pack, fresh air control based on the read CO2 level
CO2
Duct diameter Ø 200 Ø 250 Ø 315 Ø 355 Ø 400 Ø 450
0.2 208
0.3 93 313
0.4 56 192
0.5 36 125 357
0.6 88 250 455
0.7 67 185 333
0.8 53 152 263 500
0.9 38 122 208 385
1
Qv (x103 m3/h) 1.2 1.4
1.5
1.6
1.8
2
2.1
2.2
2.3
2.4
2.5
96 172 333
67 125 217 417
48 91 172 313
42 81 152 278
132 238
104 192
85 156
143
132
119
111
102
RULES FOR DETERMINING AIR FLOW RATES
There are various ways of defining the ventilation flow rate required in a building. 3 methods are generally used to calculate the required air flow rates: In compliance with European standard EN 15251, which sets the required fresh air flow rates depending on how the building is used, its surface area, the number of occupants, pollutant emissions, etc. This is the most exhaustive standard, and takes into account all of these criteria, which generally imposes higher flow rates.
* The recommendations and indicated length values are for information only, and in no way engage CIAT's liability
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HEAT PUMPS - AIR CONDITIONING - REFRIGERATION - AIR HANDLING - HEAT EXCHANGE - NA 17.01 A