Question

11. (approximate calculation) Assume a typical refrigerator uses 100 W continuous average, and costs $500. If improving the insulation reduces the energy use by 10%, and adds $50 to the cost of the refrigerator, is that a good choice for the consumer? Assume the cost of electricity for home use, average in the US, is $ 0.12/kW-hr, (which is less than in CT), and that the refrigerator will be used for 20 years. If you wish to avoid making this an Econ. problem, you may assume that interest rates are 0% for simplicity.

Answer 1

Given Iht 5 O D Cost a To cne Tot. 2102 -26o2.4

For Case 2 : 55 Electricity cost= 0-12x157's 2- breaSible