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Energy Savings % Indoor Vs. Window R/F |
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A/C is Off |
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Excluding Summer
Energy Savings |
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Definition of
Columns in the table: |
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B
= Average Outdoor
temperature (temperature of Window R/F's Condenser). |
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C
= Average Indoor
temperature, 70 F or higher (temperature of Indoor R/F's Condenser). |
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D
= Average temperature inside the R/F (set constant at 29 F). |
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Ti = C - D
= Temperature difference between the Indoor R/F's evaporator and
condenser. |
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Tw = B - D
= Temperature difference between the Window R/F's evaporator and
condenser. |
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G = Energy Savings % assuming that both R/Fs have the same COP
(efficiency). |
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G
= (Ti - Tw) / Ti
Unlike Column H, it does not include the higher efficiency of window R/F. |
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H = Energy Savings % taking into account the higher COP
(efficiency) of the window R/F. |
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H = 1 - (Tw x Tw) /
(Ti x Ti) Unlike
column G, it includes
the higher efficiency of window R/F. |
|
|
Fahrenheit |
B |
C |
D |
Ti |
Tw |
G |
H |
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JAN |
21 |
70 |
29 |
41 |
-8 |
95% |
95% |
|
FEB |
21 |
70 |
29 |
41 |
-8 |
95% |
95% |
|
MAR |
30 |
70 |
29 |
41 |
1 |
95% |
95% |
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APR |
45 |
70 |
29 |
41 |
16 |
62% |
86% |
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MAY |
52 |
70 |
29 |
41 |
23 |
44% |
69% |
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JUN |
63 |
70 |
29 |
41 |
34 |
18% |
33% |
|
JUL |
66 |
70 |
29 |
41 |
37 |
9% |
18% |
|
AUG |
61 |
70 |
29 |
41 |
32 |
22% |
40% |
|
SEP |
52 |
70 |
29 |
41 |
23 |
44% |
69% |
|
OCT |
41 |
70 |
29 |
41 |
12 |
71% |
91% |
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NOV |
28 |
70 |
29 |
41 |
-1 |
95% |
95% |
|
DEC |
21 |
70 |
29 |
41 |
-8 |
95% |
95% |
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Average Energy Savings % |
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62% |
73% |
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Exact same as above
except in Celsius |
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Celsius |
B |
C |
D |
Ti |
Tw |
G |
H |
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JAN |
-6 |
21 |
-2 |
23 |
-4 |
95% |
95% |
|
FEB |
-6 |
21 |
-2 |
23 |
-4 |
95% |
95% |
|
MAR |
-1 |
21 |
-2 |
23 |
1 |
95% |
95% |
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APR |
7 |
21 |
-2 |
23 |
9 |
62% |
86% |
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MAY |
11 |
21 |
-2 |
23 |
13 |
44% |
69% |
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JUN |
17 |
21 |
-2 |
23 |
19 |
18% |
33% |
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JUL |
19 |
21 |
-2 |
23 |
21 |
9% |
18% |
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AUG |
16 |
21 |
-2 |
23 |
18 |
22% |
40% |
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SEP |
11 |
21 |
-2 |
23 |
13 |
44% |
69% |
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OCT |
5 |
21 |
-2 |
23 |
7 |
71% |
91% |
|
NOV |
-2 |
21 |
-2 |
23 |
0 |
95% |
95% |
|
DEC |
-6 |
21 |
-2 |
23 |
-4 |
95% |
95% |
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Average Energy Savings % |
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62% |
73% |
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Exact same as above
except in Kelvin |
|
Kelvin |
B |
C |
D |
Ti |
Tw |
G |
H |
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JAN |
267 |
294 |
271 |
23 |
-4 |
95% |
95% |
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FEB |
267 |
294 |
271 |
23 |
-4 |
95% |
95% |
|
MAR |
272 |
294 |
271 |
23 |
1 |
95% |
95% |
|
APR |
280 |
294 |
271 |
23 |
9 |
62% |
86% |
|
MAY |
284 |
294 |
271 |
23 |
13 |
44% |
69% |
|
JUN |
290 |
294 |
271 |
23 |
19 |
18% |
33% |
|
JUL |
292 |
294 |
271 |
23 |
21 |
9% |
18% |
|
AUG |
289 |
294 |
271 |
23 |
18 |
22% |
40% |
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SEP |
284 |
294 |
271 |
23 |
13 |
44% |
69% |
|
OCT |
278 |
294 |
271 |
23 |
7 |
71% |
91% |
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NOV |
271 |
294 |
271 |
23 |
0 |
95% |
95% |
|
DEC |
267 |
294 |
271 |
23 |
-4 |
95% |
95% |
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Average Energy Savings % |
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62% |
73% |
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Back |
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Windowrefrigerator.com |
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PATENT PENDING |
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