氮气密度比空气大还是小(空气密度对照表)

氮气比空气密度小。

氮气,通常状况下是一种无色无味的气体,而且一般氮气比空气密度小。氮气占大气总量的78.08%(体积分数),是空气的主要成份之一。

氮气在大气中含量虽多于氧气,但是由于它的性质不活泼,所以人们是在认识氧气之后才认识氮气的。不过它的发现却早于氧气。

氮气的化学性质不活泼,常温下很难跟其他物质发生反应,所以常被用来制作防腐剂。但在高温、高能量条件下可与某些物质发生化学变化,用来制取对人类有用的新物质。

空气密度就是指在一个标准大气压下,每立方米空气所具有的质量(千克)。空气的密度大小与气温,海拔等因素有关,海拔越高密度越低,我们一般采用的空气密度是指在0摄氏度、绝对标准指标下,密度为1.29克/立方分米。

氮气密度比空气大还是小(空气密度对照表)

很多朋友都想了解空气密度表的详细情况,IWUCHEN整理了一部分最新的供大家参考:

空气密度表1:

绝对压力空气温度空气密度绝对压力空气温度空气密度
Mpa摄氏度Kg/m3Mpa摄氏度Kg/m3
0.1251.16911.42516.367
0.2252.33811.52517.537
0.3253.50731.62518.706
0.4254.67641.72519.875
0.5255.84551.82521.044
0.6257.01461.92522.213
0.7258.18372.02523.382
0.8259.35282.12524.551
0.92510.5222.22525.720
1.02511.6912.32526.889
1.12512.8602.42528.058
1.22514.0292.52529.228
1.32515.198

饱和蒸汽密度表

绝对压力饱和蒸汽温度饱和蒸汽密度绝对压力饱和蒸汽温度饱和蒸汽密度
Mpa摄氏度Kg/m3MpaKg/m3摄氏度
0.199.70.58831.41957.1038
0.2120.11.12881.5198.37.5928
0.3133.41.65071.6201.48.082
0.4143.52.16281.7204.38.5718
0.5151.82.66831.8207.19.0616
0.6158.83.16921.9209.89.552
0.7164.93.66652.0212.410.043
0.8170.44.16162.1214.810.535
0.9174.34.65442.2217.211.028
1.0179.95.14512.3219.511.521
1.1184.15.63672.4221.812.016
1.2187.96.1252.5223.912.511
1.3191.66.6143

各种气体的标准密度参考:

气体的密度(单位:千克/米3)

气体名称密度
氢气0.09
氦气0.18
氮气1.25
氧气1.43
氟气1.696
氖气0.90
氯气3.21
氩气1.78
7.14
臭氧(O3)2.14
氨气0.77
氙气5.89
氡气9.73
煤气0.60
一氧化碳1.25
二氧化碳1.98
氯化氢1.64
甲烷0.78
氧化氮1.34
硫化氢1.54
乙炔1.17
乙烷1.36
空气1.29

空气密度表2:

空气温度干空气密度饱和空气密度饱和空气饱和空气含湿量饱和空气焓
水蒸气分压力
tρρbpq.bdbib
kg/m3kg/m3X102Pag/kg干空气kJ/kg干空气
-201.3961.3951.020.63-18.55
-191.3941.3931.130.7-17.39
-181.3851.3841.250.77-16.2
-171.3791.3781.370.85-14.99
-161.3741.3731.50.93-13.77
-151.3681.3671.651.01-12.6
-141.3631.3621.811.11-11.35
-131.3581.3571.981.22-10.05
-121.3531.3522.171.34-8.75
-111.3481.3472.371.46-7.45
-101.3421.3412.591.6-6.07
-91.3371.3362.831.75-4.73
-81.3321.3313.091.91-3.31
-71.3271.3253.362.08-1.88
-61.3221.323.672.27-0.42
-51.3171.31542.471.09
-41.3121.314.362.692.68
-31.3081.3064.752.944.31
-21.3031.3015.163.195.9
-11.2981.2955.613.477.62
01.2931.296.093.789.42
11.2881.2856.564.0711.14
21.2841.2817.044.3712.89
31.2791.2757.574.714.74
41.2751.2718.115.0316.58
51.271.2668.75.418.51
61.2651.2619.325.7920.51
71.2611.2569.996.2122.61
81.2561.25110.76.6524.7
91.2521.24711.467.1326.92
101.2481.24212.257.6329.18
111.2431.23713.098.1531.52
121.2391.23213.998.7534.08
131.2351.22814.949.3536.59
141.231.22315.959.9739.19
151.2261.21817.0110.641.78
161.2221.21418.1311.444.8
171.2171.20819.3212.147.73
181.2131.20420.5912.950.66
191.2091.221.9213.854.01
201.2051.19523.3114.757.78
211.2011.1924.815.661.13
221.1971.18526.3716.664.06
231.1931.18128.0217.767.83
241.1891.17629.7718.872.01
251.1851.17131.62075.78
261.1811.16633.5321.480.39
271.1771.16135.5622.684.57
281.1731.15637.712489.18
291.1691.15139.9525.694.2
301.1651.14642.3227.299.65
311.1611.14144.8228.8104.67
321.1571.13647.4330.6110.11
331.1541.13150.1832.5115.97
341.151.12653.0734.4122.25
351.1461.12156.136.6128.95
361.1421.11659.2638.8135.65
371.1391.11162.641.1142.35
381.1351.10766.0943.5149.47
391.1321.10269.7546157.42
401.1281.09773.5848.8165.8
411.1241.09177.5951.7174.17
421.1211.08681.854.8182.96
431.1171.08186.1858192.17
441.1141.07690.7961.3202.22
451.111.0795.665212.69
461.1071.065100.6168.9223.57
471.1031.059105.8772.8235.3
481.11.054111.3377247.02
491.0961.048117.0781.5260
501.0931.043123.0486.2273.4
551.0761.013156.94114352.11
601.060.981198.7152456.36
651.0440.946249.38204598.71
701.0290.909310.82276795.5
751.0140.868384.53821080.19
8010.823472.285451519.81
850.9860.773576.698282281.81
900.9730.718699.3114003818.36
950.9590.656843.0931208436.4
1000.9470.5891013

附:不同温度下饱和水蒸汽压力

空气温度(℃)饱和水蒸汽压力(Pa)空气温度(℃)饱和水蒸汽压力(Pa)空气温度(℃)饱和水蒸汽压力(Pa)
-2012881069.24202333.1
-15193.3291143.9212493.1
-10287.98101127.9222639.8
-5422.63111311.89232813.1
0610.6121402.55242986.4
1655.94131497.21253173.5
2705.27141598.9263359.7
3757.27151706.2273563.7
4811.93161818.5283766.8
5870.59171933.2294013
6933.25182066.5304239.6
7998.58192199.3314493

另附干燥空气密度表

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