Heating cost ?

[mattysupra]

Hi all,

I have a quote for a new heating system in a industrial unit.

Can someone help work out costs as i dont under stand.

It will run on LPG. Im told the LPG gas costs 48p per litre.

The heater spec says it uses 0.51Kg/h (22kw heater)

Does the above sound correct? Can anyone work out the running cost as the heater spec doesn't say how many liters it uses but only the weight of LPG it will use.


Any help would be great thankyou.

 

[ianmcd]

for liquid Propane use the following calculation

1 Kg = 1.985 litres = 47.132 BTU

To convert BTU to kW simply multiply by 0.000293.

To convert kW to BTU simply multiply by 3414.

Hope this helps

Regards

Ian

 

[muggles]

One litre of propane weighs 0.504kg so you'll use about a litre an hour, although that's assuming the boiler is running at full tilt constantly, which it won't be

 

[mattysupra]

Thankyou, so i guess i can round it off to 50p a hour.


Does the gas price sound correct at 48p per litre? (tank hire on top)

 

[Agile]

Sounds like about £25 a day depending on how long you turn it off for at night.

 

[muggles]

Only if you can't add up, at 50p an hour it'd take 50 hours to spend £25...

 

[Agile]

Thats right but the boiler is not 100% efficient and LPG users always seem to have tremendous heating bills.

Like £50 a week for a tiny mobile home!

OK, OP so its calculated to be about £13 a day. You can turn it off at weekends and at night.

I still like radiant gas heaters as used in mosques.

 

[muggles]

The efficiency is irrelevant, if the book has a stated gas rate then that's what it'll use provided it's set up correctly. The book says it'll use 0.51kg an hour of gas, so that's what it'll use (assuming it's burning constantly). Mobile homes are badly insulated, which will use more gas, and tend to be run off bottles, which are more expensive than bulk