Lister Engine Forum

How to / DIY => Everything else => Topic started by: Johndoh on January 29, 2020, 11:04:47 PM

Title: Some info needed please
Post by: Johndoh on January 29, 2020, 11:04:47 PM
Hi Guys.
I bought this new toy I mean little heater a couple of weeks ago it runs on paraffin. It's a Rippingilles Fyrside needs painted and tidied but it works well, good heat. My question is how can I measure the output of the heater? BTU OR KW
Title: Re: Some info needed please
Post by: Oiler on January 30, 2020, 10:48:24 AM
To quote wikipedia: Heat of combustion of kerosene is similar to that of diesel fuel; its lower heating value is 43.1 MJ/kg (around 18,500 Btu/lb), and its higher heating value is 46.2 MJ/kg (19,900 Btu/lb).

If your heater is burning without smoke, the above should be your heat output.
Title: Re: Some info needed please
Post by: glort on January 30, 2020, 11:20:25 AM
Easy!
Measure the amount of fuel it consumes.

Kero, Diesel and oil is close enough to 10 KWH per litre.  Varies with what sort of oil or blend it is but that will give you a pretty good ballpark indication of the heat it's producing.

If it uses say 300 ml hr, it's .3 kw etc. Just fill it to a repeatable point, note the time you run it, top it up to the same point measuring the fuel you add and do the simple math and there is your output!

There is also no efficiency equation with this. What you burn is the heat output.

My completely unfounded guess with no knowledge of these things will be around 3-4 Kwh.
Title: Re: Some info needed please
Post by: Johndoh on January 30, 2020, 06:59:57 PM
Thanks Glort I was hoping you would chip in. The way the heater works is there is 2 gallon glass bottles inside turned upside down and the paraffin goes into little cups. The left one always empties first so a pint's burning in that bottle should give some indication. I appreciate the info
Title: Re: Some info needed please
Post by: glort on January 31, 2020, 05:26:04 AM

If the bottles are not already marked, put some graduations on them before you fill them then you can get multiple checks as it burns as to how much it's using.

1 Bottle in an hour would be 6Kwh. 1 Bottle in 2 hours = 3kw.

I'm always a bit amused at how very many questions I get on my oil burner Vids about how much fuel they use?
People always seem to want economy but where heating is concerned, the more fuel they use, the more heat they get.
Always seem to think it's like a car and you can get better economy out of one burner than another without loosing any heat.

The stove may have an efficiency curve, how much heat is transferred into the space to be warmed  rather than going up the chimney but the burning itself is linear to fuel consumed as long as the thing is burning cleanly.
Title: Re: Some info needed please
Post by: Johndoh on January 31, 2020, 09:12:40 AM
The reflector is very dull its aluminium seems to have had some type of coating on it at some stage but most is gone now. I believe cream of tartar is a good polish for aluminium so that's today's little job. I'd say you were on the money with 3kw Glort. I have a little room in my house 12x14 feet running the heater on odour free paraffin I have to open the door after about an hour. The missus thinks it's a load of dirty smelly scrap so I think it's doing it's job.
Title: Re: Some info needed please
Post by: glort on January 31, 2020, 09:43:52 AM

I had a modern Kero heater years ago.
I really liked the thing. Put out great heat, I liked the fire glow and I also liked the very feint Kero aroma.
The only drawback was it seemed to be thirsty and kero was not cheap here ( double the price of petrol at least) and hard to get.

Once pretty much every servo sold Bulk kero. I went to 48 places to find one that had a pump and the guy said he hadn't had kero in the tanks for at least 10 years.

I found out later it would have run fine on Diesel but I had got rid of it long before then.
I had some pressure primus type stoves and ran them on Diesel which worked very well and seemed to have more heat than kero.
Title: Re: Some info needed please
Post by: Johndoh on January 31, 2020, 01:11:37 PM
I'm using stuff called Tozane it's bloody dear 40 for 20 litres. It burns about 500 mils an hour it's only warming a small room then you have to open the door. There was a similar one in a local shop when I was a child it was much bigger than my hiding room and it was warm. Temperature is adjustable I have discovered the adjuster on the side
Title: Re: Some info needed please
Post by: glort on February 01, 2020, 04:38:52 AM

Never heard of that before. I looked it up and saw it's  de deodorized Kero.

I also saw many links on the net to far cheaper pricing than what you are paying, less than half in fact.
It may be worth while seeing if you can source the fuel cheaper.
I don't know what diesel is worth where you are but if it's cheaper by a worthwhile margin, you could see how a 50% blend went. I don't see anything with the burning, only the potential aroma.

If the thing is using half a litre of fuel an hour, it would be kicking out some decent heat.
Title: Re: Some info needed please
Post by: Johndoh on February 03, 2020, 04:02:37 PM
Tried 20% diesel it set of the carbon monoxide alarm the converter is quite small on those old heaters. Diesel would be ok for the shed but not the house.