I am trying to design a storage tank for a solar hot water heating system.
Need a spec sheet. Need to know gpm, distance and materials
Without specific data one can not begin to answer the quesition.
Assuming that that there is a few allowable radius for the bend: Use a Tubing bender. the least confusing to locate may well be the style for bending electric powered Conduit. you will locate one at a large ironmongery shop or ask an electrician or wiring installer to bend it for you
Build it Solar has a lot of great links to help building your own solar water heating system. Here's a link they point to for making a heat exchanger, www.bio-power .uk/exchanger.htm
