10/therm365 0. 4105 1. 1 $1. 10 = $149. 83The energy use per day in the above formulas is based upon the DOE test treatment for hot water heating systems, which presumes an inbound water temperature level of 58F, warm water temperature of 135F, and total hot water production of 64. 3 gallons daily, which is the typical use for a family of 3 people.
365 12. 03 k, Wh/day SEF Electrical energy Expense (k, Wh)= approximated annual operating expense, Example: Assuming the SEF is 2. 0 and the electrical power costs $0. 08/k, Wh365 X 12. 03 2. 0 X $0. 08 = $175. 64.
A solar hot water heater is a device that catches sunlight to heat water. It can be an economical way to produce hot water for your family (for shower and bath). Full Article allows significant energy savings as solar energy is free in contrast to natural gas or fuel oil.
1m of roof = 100m of natural gas/year In our latitudes, the sun shining on 1m of roofing replaces 100 l of heating oil or 100 m of natural gas (around 1 000 k, Wh) a year. Normally speaking, it is possible to heat of the in the kitchen area and the restroom in this way.
Supplying a cleaning device or dishwasher with this warm water also to warm the water and reduces the washing cycles, as long as certain are taken. Warm water all year round The of the collectors is at its, in summer, when the sky is cloudless, and when the collectors face south.