Here is a concept I thought of after making my “How to make a heat exchanger” video. The idea is to capture the excess hot water used while having a shower. Cold water supplying the hot water tank
runs through the heat exchanger as how
water from the hot water tank flows to the shower, down the drain and flows
through the heat exchanger. Transferring valuable heat to the cold water supply, creating a cycle. A cycle that in the end saves energy and saves you money.
In the video I use copper piping and fittings. That can be quite expensive. You can use
plastic pipe and fittings for the shell. The transfer material needs to be metal. Stainless steel or copper is optimum. Plastics are an insulator and are terrible when it comes to heat
people make the mistake of using plastics as a conductor. The obvious reason for this is cost.
Watch the video and enjoy. I am working on follow-up videos. If you have any questions about the build or whether a modification will work or not, e-mail me or message me through Google+
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Rob The Plumber