Design and Installation
06-236115-001
4-5
October 2014
Table 4-4. HFC-227ea Total Flooding Concentration Factors (W/V), English
Temp
a
(°F)
c
Specific
Vapor
Volume
s
(ft
3
/lb)
d
Weight Requirements of Hazard Volume,
(lb/ft
3
)
b
Design Concentrations (% by Volume)
e
6
6.25
6.70
7
8
9
10
11
12
13
14
15
30
2.0210
0.0316
0.0330
0.0355
0.0372
0.0430
0.0489
0.0550
0.0612
0.0675
0.0739
0.0805
0.0873
40
2.0678
0.0309
0.0322
0.0347
0.0364
0.0421
0.0478
0.0537
0.0598
0.0659
0.0723
0.0787
0.0853
50
2.1146
0.0302
0.0315
0.0339
0.0356
0.0411
0.0468
0.0525
0.0584
0.0645
0.0707
0.0770
0.0835
60
2.1612
0.0295
0.0308
0.0332
0.0348
0.0402
0.0458
0.0514
0.0572
0.0631
0.0691
0.0753
0.0817
70
2.2075
0.0289
0.0302
0.0325
0.0341
0.0394
0.0448
0.0503
0.0560
0.0618
0.0677
0.0737
0.0799
80
2.2538
0.0283
0.0296
0.0319
0.0334
0.0386
0.0439
0.0493
0.0548
0.0605
0.0663
0.0722
0.0783
90
2.2994
0.0278
0.0290
0.0312
0.0327
0.0378
0.0430
0.0483
0.0538
0.0593
0.0650
0.0708
0.0767
100
2.3452
0.0272
0.0284
0.0306
0.0321
0.0371
0.0422
0.0474
0.0527
0.0581
0.0637
0.0694
0.0752
110
2.3912
0.0267
0.0279
0.0300
0.0315
0.0364
0.0414
0.0465
0.0517
0.0570
0.0625
0.0681
0.0738
120
2.4366
0.0262
0.0274
0.0295
0.0309
0.0357
0.0406
0.0456
0.0507
0.0560
0.0613
0.0668
0.0724
130
2.4820
0.0257
0.0269
0.0289
0.0303
0.0350
0.0398
0.0448
0.0498
0.0549
0.0602
0.0656
0.0711
140
2.5272
0.0253
0.0264
0.0284
0.0298
0.0344
0.0391
0.0440
0.0489
0.0540
0.0591
0.0644
0.0698
150
2.5727
0.0248
0.0259
0.0279
0.0293
0.0338
0.0384
0.0432
0.0480
0.0530
0.0581
0.0633
0.0686
160
2.6171
0.0244
0.0255
0.0274
0.0288
0.0332
0.0378
0.0425
0.0472
0.0521
0.0571
0.0622
0.0674
170
2.6624
0.0240
0.0250
0.0269
0.0283
0.0327
0.0371
0.0417
0.0464
0.0512
0.0561
0.0611
0.0663
180
2.7071
0.0236
0.0246
0.0265
0.0278
0.0321
0.0365
0.0410
0.0457
0.0504
0.0552
0.0601
0.0652
190
2.7518
0.0232
0.0242
0.0260
0.0274
0.0316
0.0359
0.0404
0.0449
0.0496
0.0543
0.0592
0.0641
200
2.7954
0.0228
0.0238
0.0256
0.0269
0.0311
0.0354
0.0397
0.0442
0.0488
0.0535
0.0582
0.0631
a The minimum design temperature in the flooded space.
b
[agent weight requirements (lb/ft
3
)] = Pounds of agent required per cubic foot of protected volume
to produce indicated concentration at the temperature specified.
c [temperature (°F)] = The design temperature in the hazard area.
d [specific volume (ft
3
/lb)] = Specific volume of superheated HFC-227ea vapor can be approximated by the formula:
where = temperature (°F)
e
[concentration (%)] = Volumetric concentration of HFC-227ea in air at the temperature indicated.
t
W V
W V
W
V s
c
100
c
–
=
t
s
s
1.885
0.0046
t
+
=
t
C
Содержание ECS
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