滚动转子压缩机的设计Word文档格式.docx
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滚动转子压缩机的设计Word文档格式.docx
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R410a
标准工况
最大压差工况
最大轴功率工况
设计工况
PiPso/MPa
0.932
0.680
0.996
P2Pdk/MPa
3.396
3.033
2.701
3.351
压力比Pdk
Pso
3.644
4.460
3.972
3.364
ViVso/(m3?
kg1)
0.030
0.044
0.029
V2/(m3?
0.009
0.011
0.012
m/(kJ?
435.51
439.52
437.41
h2/(kJ?
473.48
486.55
482.75
473.10
h4/(kJ?
292.19
280.72
270.02
282.96
等熵指数==C1=1.16由r410aCv
的性质经计算求得
1.16
压缩多变指数nln(P2/Pl)
In(W/v2)
1.074
1.078
1.062
1.036
工质单位质量制冷量
q0m
hih4(kJ?
kg-1)
143.32
158.80
169.50
154.45
单位等熵压缩功ts1
h2m/(kJ?
kg)
37.97
47.03
43.23
35.69
理论容积输气量
qvt
60n^(D2d2)L/(m3?
h1)
3.04
v
1
容积系数彳Pdk.
1c——1
0.97
0.98
压力系数p(通常认为p近似等
于1)
温度系数t(通常,当压力比=2~8
时,T=0.95~0.82,压力比高时取下
限)
0.90
泄漏系数](转速为3000r/min时,
l约为0.82~0.92范围)
0.88
回流系数h(一般近似取1)
容积效率vvpTlh
0.77
0.78
实际质量输气量
qmavq/(kg?
h)
V1
78.03
53.20
80.72
制冷量Qo五血/kW
3600
3.106
2.347
2.505
3.463
等熵压缩功率Pts*7/kw
0.823
0.695
0.639
0.800
PdkPd
Pso-Ps其中
Ps0,Pd0.1Pdk
4.008
4.906
4.369
3.701
Tl—(「1)
指示效率iJ
n,—
—(n11)
n1
P
指示功率Pi亠
i
1.07
0.89
0.82
1.03
机械效率m(m=0.40~0.85)
0.8
电动机效率mo(小冰箱mo0.65,
商用制冷机mo0.8)
0.7
电效率elimmo
0.60
0.50
0.46
0.58
电功率Pel(Pts/el)/kW
1.37
1.39
1.38
性能系数(相对功率)COP,Q°
Pel
2.27
1.69
1.80
2.51
四、转子受力分析
1)压缩过程中基元容积内的气体压力
0.25sin2]n
0.25sin2
pJ2)(0.5)
(1)sin
(2)(0.5)
(1)sin
2)作用于滚动转子上的气体力合力
FgRL(1
)(p
Pso).2(1
cos
3)作用于滚动转子上的阻力矩M
MgFg
-R
2
旋转力矩
Mg
-R2L(1
摩擦力矩
Mf
9550R(
1)-
m
n
)1(1cos2)
MgMf
Pso)[2(1cos)[—(1COS2)]
五、气体合力及阻力矩随转角的变化曲线
标准工
况
Po
Fg
Mf
M
0.857257
0.0000000000
10
20
25
30
35
0.933571
1.089526
0.0008647913
0.858122
0.936836
3.805616
0.0034279911
0.860685
0.940998
7.902595
0.0079449696
0.865202
0.946158
13.69471
0.0151634763
0.87242
0.952417
21.51408
.025*******
0.883207
60
0.959876
31.70735
0.0412832347
0.89854
65
0.968638
44.63286
0.0622390475
0.919496
70
0.978808
60.65849
0.0899812165
0.947238
75
0.990494
80.16029
0.1257454120
0.983002
80
1.003812
103.5218
0.1708253160
1.028082
85
1.018884
131.1341
0.2265589890
1.083816
90
1.035839
163.397
0.2943165699
1.151573
95
1.054821
200.7205
0.3754899090
1.232747
100
1.075985
243.5277
0.4714846149
1.328741
105
1.099502
292.2581
0.5837148711
1.440972
110
1.125563
347.3719
0.7136012583
1.570858
115
1.154379
409.3558
0.8625716969
1.719828
120
1.18619
478.7286
1.0320655177
1.889322
125
1.221265
556.0491
1.2235405721
2.080797
130
1.259906
641.9241
1.4384832203
2.29574
135
1.302462
737.0186
1.6784209768
2.535678
140
1.349325
842.0665
1.9449375635
2.802194
145
1.400948
957.8832
2.2396901133
3.096947
150
1.457849
1085.381
2.5644282917
3.421685
155
1.520627
1225.584
2.9210151534
3.778272
160
1.589972
1379.651
3.3114496358
4.168706
165
1.666688
1548.892
3.7378907052
4.595147
170
1.751711
1734.803
4.2026833226
5.05994
175
1.846136
1939.089
4.7083865807
5.565643
180
1.951247
2163.706
5.2578045928
6.115061
185
2.068561
2410.904
5.8540209859
6.711278
190
2.199877
2683.281
6.5004381798
7.357695
195
2.347333
2983.848
7.2008230294
8.05808
200
2.513494
3316.112
7.9593608901
8.816618
205
2.701442
3684.169
8.7807207571
9.637977
210
2.91491
4092.834
9.6701348744
10.52739
215
3.158449
4547.794
10.6334971535
11.49075
220
4971.788
11.4834377327
12.34069
225
4902.028
11.1634442864
12.0207
230
4823.635
10.8092497462
11.66651
235
4736.511
10.4223069085
11.27956
240
4640.569
10.0043555674
10.86161
245
4535.734
9.5574458885
10.4147
250
4421.954
9.0839571624
9.941214
255
4299.199
8.5866107482
9.443867
260
4167.469
8.0684761670
8.925733
265
4026.797
7.5329694835
8.390226
270
3877.251
6.9838433280
7.8411
275
3718.938
6.4251681480
7.282425
280
3552.007
5.8613045331
6.718561
285
3376.651
5.2968667247
6.154123
290
3193.108
4.7366776877
5.593934
295
3001.66
4.1857163843
5.042973
300
2802.638
3.6490581389
4.506315
305
2596.416
3.1318092066
3.989066
310
2383.413
2.6390368604
3.496294
315
2164.092
2.1756964701
3.032953
320
1938.957
1.7465571738
2.603814
325
1708.547
1.3561278183
2.213385
330
1473.441
1.0085848817
1.865842
335
1234.248
0.7077040717
1.564961
340
991.6043
0.4567972350
1.314054
345
746.1704
0.2586561001
1.115913
350
498.6268
0.1155042262
0.972761
355
249.6683
.028*******
0.886215
360
血与9的关系
00
4
>
6
O
最大压差工况
P0
0.68
0.713045
0.681151
0.797896
0.0006333156
0.713679
0.683542
2.786998
0.0025104487
0.715556
0.686589
5.78742
0.0058184526
0.718864
0.690368
10.02934
0.0111049979
0.72415
0.694953
15.75607
0.0190050423
0.73205
0.700416
23.22156
0.0302346643
0.74328
0.706833
32.68839
0.0455828843
0.758628
0.714282
44.42619
0.0659021062
0.778947
0.722842
58.7106
0.0920978215
0.805143
0.732598
75.82283
0.1251181999
0.838164
0.743638
96.04977
0.1659441449
0.878989
0.75606
119.6847
0.2155803291
0.928626
0.769967
147.0285
0.2750476483
0.988093
0.785473
178.3918
0.3453774467
1.058423
0.802706
214.0974
0.4276077754
1.140653
0.821803
254.4835
0.5227818567
1.235827
0.842922
299.9077
0.6319488402
1.344994
0.866238
350.7517
0.7561668572
1.469212
0.891949
407.4263
0.8965083117
1.609554
0.920278
470.3782
1.0540672916
1.767113
0.951479
540.0969
1.2299689411
1.943014
0.985844
617.1227
1.4253806144
2.138426
1.023704
702.0565
1.6415246292
2.35457
1.065441
795.57
1.8796924496
2.592738
1.111495
898.4187
2.1412601746
2.854305
1.162375
1011.456
2.4277052632
3.140751
1.218674
1135.649
2.7406245177
3.45367
1.28108
1272.1
3.0817534546
3.794799
1.350399
1422.069
3.4529873327
4.166033
1.427579
1586.998
3.8564042772
4.56945
1.513739
1768.549
4.2942911397
5.007336
1.610202
1968.641
4.7691729818
5.482218
1.718549
2189.5
5.2838473633
5.996893
1.840668
2433.715
5.8414249770
6.55447
1.978836
2704.318
6.4453786151
7.158424
2.13581
3004.87
7.0996030113
7.812648
2.314947
3339.578
7.8084888089
8.521534
2.520369
3713.444
8.5770148273
9.29006
2.75717
4132.445
9.4108640081
10.12391
3.031692
4603.776
10.3165700462
11.02962
4523.138
9.9527955178
10.66584
4431.517
9.5536723417
10.26672
4331.405
9.1268953635
9.839941
4222.751
8.6747366896
9.387782
4105.526
8.1997950855
8.91284
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