Monday, January 9, 2017

Egypt regional humidity probability - Annex F - IEC 62552

The following data are based on weather data log of weather station of Cairo International Airport CAI HECA weather station number 623660 found in this link http://en.tutiempo.net/climate/ws-623660.html

The following table is approximate humidity probability Ri for Egypt during year 2016 to be used in Annex "F" in IEC 62552-3:2015. You can download the climate data of Cairo 2016 from this link https://drive.google.com/open?id=0BxLFp7fy6GivazZSanFDNDgxeEU

Assumptions:

[1] Measured temperatures are indoor

[2] Cairo weather is considered as Egypt weather

[3] 2017 weather is expected to be the same as 2016 weather



Year 2016

Relative humidity interval [%]

Nominal RH [%]

Regional humidity probability [%] at the following nominal dry bulb temperatures [°C]

16 °C

22 °C

32 °C

]0,10]

5

0

0

0

]10,20]

15

0

0.28

1.11

]20,30]

25

0.28

2.49

2.76

]30,40]

35

1.38

5.53

3.87

]40,50]

45

6.08

9.67

6.35

]50,60]

55

9.39

8.84

19.06

]60,70]

65

6.91

7.74

4.97

]70,80]

75

1.93

1.38

0

]80,90]

85

0

0

0

]90,100]

95

0

0

0

Total probability

25.97

35.93

38.12