| Energy/Electricity Savings % Comparison between the Window Refrigerator & A/C | |||||||||||||||||||||||
| Freezing Water at night and a Similar Indoor Refrigerator and a traditional window A/C. | |||||||||||||||||||||||
| Energy Saving % = (C - B) / (C - D) | |||||||||||||||||||||||
| This formula has been reviewed and verified by a third party expert. | |||||||||||||||||||||||
| To download the original MS. Excel spreadsheet, in your browser, change *.htm to *.xls | |||||||||||||||||||||||
| C = Td is average Day outdoor temperature | |||||||||||||||||||||||
| B = Tn is average Night outdoor temperature | |||||||||||||||||||||||
| D = The temperature of the Evaporator (Water/Ice Reservoir) = 0 C | |||||||||||||||||||||||
| Td | Td | Td | Td | Td | Td | Td | Td | Td | Td | Td | Td | Td | Td | Td | |||||||||
| Fahrenheit | 110 | 105 | 100 | 95 | 90 | 85 | 80 | 75 | 70 | 65 | 60 | 55 | 50 | 45 | 40 | ||||||||
| Celsius | 43 | 41 | 38 | 35 | 32 | 29 | 27 | 24 | 21 | 18 | 16 | 13 | 10 | 7 | 4 | ||||||||
| Tn | 90 | 32 | 26% | 21% | 15% | 8% | 0% | -9% | -21% | -35% | -53% | -76% | -107% | -152% | -222% | -346% | -625% | ||||||
| Tn | 85 | 29 | 32% | 27% | 22% | 16% | 9% | 0% | -10% | -23% | -39% | -61% | -89% | -130% | -194% | -308% | -563% | ||||||
| Tn | 80 | 27 | 38% | 34% | 29% | 24% | 17% | 9% | 0% | -12% | -26% | -45% | -71% | -109% | -167% | -269% | -500% | ||||||
| Tn | 75 | 24 | 45% | 41% | 37% | 32% | 26% | 19% | 10% | 0% | -13% | -30% | -54% | -87% | -139% | -231% | -438% | ||||||
| Tn | 70 | 21 | 51% | 48% | 44% | 40% | 34% | 28% | 21% | 12% | 0% | -15% | -36% | -65% | -111% | -192% | -375% | ||||||
| Tn | 65 | 18 | 58% | 55% | 51% | 48% | 43% | 38% | 31% | 23% | 13% | 0% | -18% | -43% | -83% | -154% | -313% | ||||||
| Tn | 60 | 16 | 64% | 62% | 59% | 56% | 52% | 47% | 42% | 35% | 26% | 15% | 0% | -22% | -56% | -115% | -250% | ||||||
| Tn | 55 | 13 | 71% | 68% | 66% | 63% | 60% | 57% | 52% | 47% | 39% | 30% | 18% | 0% | -28% | -77% | -188% | ||||||
| Tn | 50 | 10 | 77% | 75% | 74% | 71% | 69% | 66% | 63% | 58% | 53% | 45% | 36% | 22% | 0% | -38% | -125% | ||||||
| Tn | 45 | 7 | 83% | 82% | 81% | 79% | 78% | 75% | 73% | 70% | 66% | 61% | 54% | 43% | 28% | 0% | -63% | ||||||
| Tn | 40 | 4 | 90% | 89% | 88% | 87% | 86% | 85% | 83% | 81% | 79% | 76% | 71% | 65% | 56% | 38% | 0% | ||||||
| Tn | 35 | 2 | 96% | 96% | 96% | 95% | 95% | 94% | 94% | 93% | 92% | 91% | 89% | 87% | 83% | 77% | 63% | ||||||
| Above 0% is when average night time temperature is warmer than average day time. | |||||||||||||||||||||||