| Energy / Electricity Saving Rate = (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 | |||||||||||||||||||||||
| All temperatures are Calculated in Celsius. | |||||||||||||||||||||||
| Ti = C-D | Ti is the temperature difference between Indoor R/Fs evaporator & condenser | ||||||||||||||||||||||
| Tw = B-D | Tw is the temperature difference between Window R/Fs evaporator & condenser | ||||||||||||||||||||||
| B = Outdoor temperature (temperature of window R/F's condenser). | |||||||||||||||||||||||
| C = Indoor temperature (temperature of indoor R/F's condenser). | |||||||||||||||||||||||
| D = 32 F (0 oCelsius), the assumed fixed temperature of both R/F's evaporator (fixed). | |||||||||||||||||||||||
| B | B | B | B | B | B | B | B | B | B | B | B | B | B | B | B | ||||||||
| Fahrenheit | 110 | 105 | 100 | 95 | 90 | 85 | 80 | 75 | 70 | 65 | 60 | 55 | 50 | 45 | 40 | 36 | |||||||
| Celsius | 43 | 41 | 38 | 35 | 32 | 29 | 27 | 24 | 21 | 18 | 16 | 13 | 10 | 7 | 4 | 2 | |||||||
| C | 110 | 43 | 0% | 6% | 13% | 19% | 26% | 32% | 38% | 45% | 51% | 58% | 64% | 71% | 77% | 83% | 90% | 95% | |||||
| C | 105 | 41 | -7% | 0% | 7% | 14% | 21% | 27% | 34% | 41% | 48% | 55% | 62% | 68% | 75% | 82% | 89% | 95% | |||||
| C | 100 | 38 | -15% | -7% | 0% | 7% | 15% | 22% | 29% | 37% | 44% | 51% | 59% | 66% | 74% | 81% | 88% | 94% | |||||
| C | 95 | 35 | -24% | -16% | -8% | 0% | 8% | 16% | 24% | 32% | 40% | 48% | 56% | 63% | 71% | 79% | 87% | 94% | |||||
| C | 90 | 32 | -34% | -26% | -17% | -9% | 0% | 9% | 17% | 26% | 34% | 43% | 52% | 60% | 69% | 78% | 86% | 93% | |||||
| C | 85 | 29 | -47% | -38% | -28% | -19% | -9% | 0% | 9% | 19% | 28% | 38% | 47% | 57% | 66% | 75% | 85% | 92% | |||||
| C | 80 | 27 | -63% | -52% | -42% | -31% | -21% | -10% | 0% | 10% | 21% | 31% | 42% | 52% | 63% | 73% | 83% | 92% | |||||
| C | 75 | 24 | -81% | -70% | -58% | -47% | -35% | -23% | -12% | 0% | 12% | 23% | 35% | 47% | 58% | 70% | 81% | 91% | |||||
| C | 70 | 21 | -105% | -92% | -79% | -66% | -53% | -39% | -26% | -13% | 0% | 13% | 26% | 39% | 53% | 66% | 79% | 89% | |||||
| C | 65 | 18 | -136% | -121% | -106% | -91% | -76% | -61% | -45% | -30% | -15% | 0% | 15% | 30% | 45% | 61% | 76% | 88% | |||||
| C | 60 | 16 | -179% | -161% | -143% | -125% | -107% | -89% | -71% | -54% | -36% | -18% | 0% | 18% | 36% | 54% | 71% | 86% | |||||
| C | 55 | 13 | -239% | -217% | -196% | -174% | -152% | -130% | -109% | -87% | -65% | -43% | -22% | 0% | 22% | 43% | 65% | 83% | |||||
| C | 50 | 10 | -333% | -306% | -278% | -250% | -222% | -194% | -167% | -139% | -111% | -83% | -56% | -28% | 0% | 28% | 56% | 78% | |||||
| Note: Under 0% area is when outdoors is warmer than indoors (A/C is On). | |||||||||||||||||||||||
| When A/C is On, there is no Net energy savings. See bottom of page. | |||||||||||||||||||||||