temperature rise

[Grime Busters LLC]

Nigel, probably one of the most valuable individuals ever to visit this or any other PW board. Such a shame another great person disappears because of all the drama.

 

[Christopher]

The carpet cleaner truck mounts use up a lot of wasted heat like from the engine, exhaust and I think that they use a simple heat exchanger.

With a heat exchanger first to pre-heat the water then the heat rise in the boiler will heat the water more since it is coming in warmer.

Maybe an external coil for the water to get heated by an engine oil fin cooler then a coil around the muffler for more heat then going into the pump but keep it limited to about 100 to 120 degrees, maybe that will give you some super hot water at the wand?

Another idea is using another boiler set at 100 degrees to pre-heat the water before it enters the pump then heated by the regular burner.

This is just to get the water hotter, not really more efficient using another burner but the coils at the oil cooler and muffler might increase efficiency.

The carpet cleaner truck mounts use the wasted heat from what I hear but I have not looked at those systems up close yet.

 

[Ron Musgraves]

Hello Scott,

It has been many years since I did the research when I rebuilt our primary system. If my memory is correct I used 100,000 Btu to heat 1 gpm 100 degrees. In fact we get about a 150 degree temperature rise.

The boiler that I had installed is rated at 980,000 Btu and the General TSF-2221 pump that we installed is rated for 10.2 gpm. The boiler is also rated for steam. We have had a couple projects that we ran it well over 300 degrees.

I purchased the boiler from Whitco in 2001. It uses Lp vapor and the coil is 3/4" x 400 feet long.

In the picture the boiler is on the left side and the General is on the lower right. The spin on oil filter that you see next to the boiler is for the engine on our Genset.

My guys can run two wands with 5.5 tips and have water temperature running in the range of 180-210 degrees. Remember in the winter time our inbound water temperature is around 35-40 degrees!

Dave Olson

Hello My freind Dave Olsen, hows it going. Glad to see you getting in the mix. Hope all is well!!!

 

[Dave Olson]

Thanks Ron,

I'm doing better everyday.

I'm even going to try and take the old truck out for a spin this holiday weekend!

Dave Olson

 

[Scott Stone]

Can I go? It is great to know you are feeling better. Thanks for dropping in.

 

[Ron Musgraves]

Anyone wants to Know Dave Olson heres what Dave Loved, Old cars trucks and his favorite Tractors

Thanks Ron,

I'm doing better everyday.

I'm even going to try and take the old truck out for a spin this holiday weekend!

Dave Olson

 

[Christopher]

This is really a great thread.

For the 10000btu to heat the water in the example, was that in a pan on the stove or in a pipe flowing like 5.5gpm? I think that the flow has a lot to do with the heating and loss of efficiency so for the guys with the 380,000btu systems or larger burners, maybe because of the volume flowing through the pipe it does not get heated efficiently?

I wonder if the bigger coil companies could make a more efficient burner system? I would think that they could.

A more efficient coil/burner system would probably save some fuel for the heating but it probably would get the water a lot hotter, faster and for multiple gun systems, provide enough heat for 2 or more guns with hot water, even on a cold day.