PART A: Using the data above, if the Dry and Wet Bulb Temperatures are close to each other, what does that mean about the Relative Humidity? What does the Dry Bulb Temperature relate to? On a day that it is sunny outside, would you expect the wet and dry bulb temperature to be close to, or far from each other? PART B: If the Dewpoint Temperature and Temperature are far from each other, what does that mean about the relative humidity? On a day that it is raining, would you expect the Dewpoint Temperature and Temperature to be close to each other, or far from each other?

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Sling Psychrometer Readings (use the table on the next page to find the Relative Humidity)

Trial

Outside conditions

Wet Bulb Temperature

Dry Bulb Temperature

Relative Humidity %

1

Mostly Sunny

14 C

20 C

 

2

Partly cloudy

16 C

20 C

 

3

Sunny

10 C

22 C

 

4

Cloudy

22 C

22 C

 

PART A: Using the data above, if the Dry and Wet Bulb Temperatures are close to each other, what does that mean about the Relative Humidity? What does the Dry Bulb Temperature relate to? On a day that it is sunny outside, would you expect the wet and dry bulb temperature to be close to, or far from each other?

PART B: If the Dewpoint Temperature and Temperature are far from each other, what does that mean about the relative humidity? On a day that it is raining, would you expect the Dewpoint Temperature and Temperature to be close to each other, or far from each other?

Dry Bulb
Temperature
(Celsius)
-20
-18
-16
-14
-12
-10
-8
-6
-2
0
2
4
6
8
PERSPENN
10
12
14
16
18
20
22
SLING PSYCHROMETER RELATIVE HUMIDITY CHART
Relative Humidity %
Difference Between Wet-bulb and Dry-bulb Temperatures (°C)
2 3 4 5 6 7 8 9 10 11 12 13
24
26
28
30
0 1
100 28
100 40
100 48
100 55 11
100
61 23
100 66 33
100 71 41 13
100 73 48 20
100
77 54 32 11
100
79 58 37 20 1
100
81 63
11
45 28
51 36 20 6
100 83
67
100 85 70
100 86 72
56 42 27 14
59 46 35 22
62 51 39 28
100
87
74
100
88
76
65
54
43 33
100
88
78
67
57 48
38
100
89
79
69
60
50 41 33
100
90
80 71
62 54
100
81 72 64 56
100
82 74 66 58
100
92
83
75
68
100
92 84 76 69 62 55 49
100
92 85
77 70 64 57
100
93
86
78
71
100 93 86 79 72 66 61
91
91
10
17 6
24 13 4
28
19 10
2
16
8
21
14
26
19
30 23
33
36
45 37
48
51 44
40
60 53 46
51
65 59 53
55
48829449
25
33
36
40
45
47
39
42
44
EEEEE
27
30
34
36
39
ITSFN2858
12
17
21
31
34
11
F48828
15
20
23
26
29
14
15
5
10
4
14 9
18 13
21
17
25 20 16
4
9
12
Transcribed Image Text:Dry Bulb Temperature (Celsius) -20 -18 -16 -14 -12 -10 -8 -6 -2 0 2 4 6 8 PERSPENN 10 12 14 16 18 20 22 SLING PSYCHROMETER RELATIVE HUMIDITY CHART Relative Humidity % Difference Between Wet-bulb and Dry-bulb Temperatures (°C) 2 3 4 5 6 7 8 9 10 11 12 13 24 26 28 30 0 1 100 28 100 40 100 48 100 55 11 100 61 23 100 66 33 100 71 41 13 100 73 48 20 100 77 54 32 11 100 79 58 37 20 1 100 81 63 11 45 28 51 36 20 6 100 83 67 100 85 70 100 86 72 56 42 27 14 59 46 35 22 62 51 39 28 100 87 74 100 88 76 65 54 43 33 100 88 78 67 57 48 38 100 89 79 69 60 50 41 33 100 90 80 71 62 54 100 81 72 64 56 100 82 74 66 58 100 92 83 75 68 100 92 84 76 69 62 55 49 100 92 85 77 70 64 57 100 93 86 78 71 100 93 86 79 72 66 61 91 91 10 17 6 24 13 4 28 19 10 2 16 8 21 14 26 19 30 23 33 36 45 37 48 51 44 40 60 53 46 51 65 59 53 55 48829449 25 33 36 40 45 47 39 42 44 EEEEE 27 30 34 36 39 ITSFN2858 12 17 21 31 34 11 F48828 15 20 23 26 29 14 15 5 10 4 14 9 18 13 21 17 25 20 16 4 9 12
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