Homemade solar water system

[pieces]

Wind chill factor needs to be considered even more in the Southern states if playing with unenclosed pipes.

I like the Vac tubes .I was looking at it but we have cheap gas so it wasnt worth the outlay .

[lee]

I had thought of heating my outdoor spa (only about 1400 litres) with a mini system

it has a 2kw heating element and takes about 12 hours to heat up from cold (approx 18deg C)
probably about $2-3 a day to run

however i wasnt sure if it was really worth the effort as i couldnt find a cheap easy way to implement it.

[ralph123]

A Chinese beer drinker has made a solar water heater — using leftover beer bottles and hoses.

Dont know how effective it is...