Replies to post #11104 on Wanderport Corp (WDRP)

[Cburg]

Volts x Amps produces Killo Watts. This is power. A certain KW heater will produce a corresponding temperature rise at a certain flow rate. I found an equation for temperature rise per KW for a microwave water heater, and it is the same as a resistance electric water heater. Thus a 30Amp 120 volt microwave unit will heat the same as a 30Amp 120 volt tankless electric water heater. I think the only advantage they can hope for is a price improvement, and I think this will be hard to accomplish. A resistance heating element is pretty cheep compared to magnetrons and transformers and rectifiers. I hope I am wrong, but this is what I expect.

http://knol.google.com/k/microwave-water...Another on tankless electric heaters: http://www.gotankless.com/products.htmlIf 1KW produces 15 deg rise at 1L/min, then a comparison to this electric heater would be:2.25GPM=8.52L/min28.8KW=87degFrise15degCrise=27degFrise87/27=3.22xpower 3.22x1=3.22KWx8.52=27.4KW vs 28.8KW to acheive same temperature rise