good to know Karl.
'house water heater' ..?
as in a land house ...
or as in 'onboard Westy' water heater ?

if the later ..then I'd think to use either the regular heater circuit ..
or ..
you know that EGR cooler Heat Exchange on like an AHU tdi ...
I'm saving one of those ..sure looks like a super way to use exhaust
heat to heat up a liquid flowing through it.

On 8/28/2014 4:42 PM, Karl Mullendore wrote:
> On Mon, 25 Aug 2014 12:40:25 -1000, SDF ( aka ;jim lahey' - Scott )
> <scottdaniel@TURBOVANS.COM> wrote:
>
>
>> I have one of these flanges with 3 glow plugs in it ..
>> and 'one of these days' I'll bolt it to another one, to make a fitting
>> that can go right in a hose that's part of the heater circuit.
>>
>> Such cars have fairly high out put alternators too ...
>> tdi jettas use either a 90 or a 120 amp alternator I believe.
> I'd think twice about that idea - at 10A per plug, that's a huge load on the
> alternator. FWIW, I made a prototype electric house water heater using one
> of these flanges, even at the super-low flow rate of the faucet they barely
> warmed the water - from 50 to 80 degrees, with a restrictor in place also.
> Glow plugs are great for heating a combustion chamber but that's about it.
> Later TDIs didn't have these, guess they figured out they really weren't
> worthwhile.
> Karl
>