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