Portable Hot Water Heater Application - Suggestions

[Deleted User]

is pretty straight forward.

4 GPM @ a 140 degree rise = 280,000 btuH net.

Divide that by the thermal efficiency of the heat source and you have the job half done. If you use say a Knight mod con, then 280K divided by .92 = 304,000 btuH.

If you tie that in with a TurboMax storage tank/reverse heat exchanger assembly, then the only other thing you need to worry about is the pressurizer, fuel source and containment trailer.

It could be set up to run on LP. It would need to be stored in a non freezing situation.

The amount of propane you could haul with it would depend on local fire ordinances and if it is hauled or driven on Interstate Highways, the NTSB and DOT might like to have some say in it as well.

You could easily subsitute an oil burning appliance for the same boiler. Just be sure to check with local fire officials to see what they want.

ME

Perry_2

Portable Hot Water Heater Application - Suggestions

My youngest brother runs a window and related building exterior cleaning business in Oregon; and asked me for some ideas how to build his next business project.

He is looking to assemble a trailer that would have a propane or diesel (fuel oil) on demand hot water heater to produce 4 GPM (mininum) of 180 F hot water (to be used for washing buildings).

He is of course trying to build this trailer at a reasonable cost - but does not wish to buy unreliable equipment either. The unit would see intermittent use during the year.

He believes that most of the "pressure wash" equipment on the market is at too high a pressure.

The outlet of the hot water heater would feed into a "Medium" pressure pump.

Suggestions anyone. What type of equipement, and what issues does he need to address for venting and fuel supply for a work trailer.


Thanks in advance.

Perry