ched999uk
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- Lancashire
According to this : Water Heating Calculator for Time, Energy, and Power it would take about 8 hrs to take 400 lts at 6 Deg C to 40 deg C using a 2000 watt element - that doesn't take in to consideration losses due to tank's insulation but energy transfer from element to water is generally near 100% efficient.Ahh I see, I miss understood how that one works so the water passes through the element, so you could have the controller set on low so the water passes slowly wonder how long it would take to heat a 400ltr tank though
I quite like the idea of the willis heater as no need to cut any big holes in the tank. There are obviously safety issues to be overcome i.e. making sure the water is flowing through it before powering on the element. It could be quite simple to fit by putting a male rectus on it's input so you can plug reel into it, then on the outlet have it going back to the tank. That way the pump, interconnecting pipe and reel stay warm from the tank water that's then being heated by the 2Kw element.
I'm certainly going to think about it and see if it's worth doing.
Just had another thought - maybe I could use the output from the heater to go though hose wrapped round my RO and filters, so that stayed warm.......