Monday, November 24, 2008
6.Can the washer machine benefit from the Miljødusj?
The Miljødusj is designed to heat the incoming cold water based on the drain water leaving the shower at the same time. It must be simultaneous to work efficient. I was first thinking of hooking up the washing machine together with the shower, but I was told it would not do much good. The washing machine does not drain anything until it is done with the washing cycle, and then the next water that flows inn would be for rinsing, which I believe is usually just cold water. But then I thought, what if I connect just the water inlet to the washing machine from the preheated outlet of the Miljødusj heat exchanger, and forget about the drain water going through it. Then I could start the washing machine right after my shower and harvest the left over energy. (Or possibly run it at the same time as I shower?) After my morning shower, I set the shower mixer to just cold water, and emptied 2 liter at the time while measuring the temperature. It gave be this table, that shows the energy value of the "leftovers" when I am done showering. I am not sure how much water our washing machine needs, but I would say it should be less than 8 liters. If so, it should be possible to squeeze out 85 Wh by also connecting the washer machine to the Miljødusj. Many ifs, and not a big potential saving. Based on this I decided not to connect our washer machine, at least not for now.