Kw to kWh

warksfarmer · Aug 23, 2017

I know they are not directly related and one measures power and the other consumption but if you've got a survey suggesting a building will need 100kw per annum and the shed was occupied for 2500 hours per year, what's a good guesstimate for kWh. This is a heat related question not electricity use.

akaPABLO01 · Aug 23, 2017

warksfarmer said:
I know they are not directly related and one measures power and the other consumption but if you've got a survey suggesting a building will need 100kw per annum and the shed was occupied for 2500 hours per year, what's a good guesstimate for kWh. This is a heat related question not electricity use.

I guess you just have the survey suggesting 100kW boiler will service the annual heat demand. You could do with the bit before which is the annual heat requirement.

Also, if the building is habitable or your drying then you won't need heat for 2,500 hours. You are probably looking at half this 1,250 hour or 8 hours a day for 6 months if it's for human consumption not forgetting minus weekends/bank holidays unless it's lived in.

You could do with providing more info such as usage of heat for a start.

Yale · Aug 23, 2017

You use 1kw of energy for 1 hour you have used 1kwh.

Not rocket science.

If you are using 100kw of energy per hour and run for 2500 hours per year then the energy consumed per annum would be 100x2500 = 250,000kwh.

Doing it for the kids · Aug 23, 2017

Yale said:
You use 1kw of energy for 1 hour you have used 1kwh.

Not rocket science.

If you are using 100kw of energy per hour and run for 2500 hours per year then the energy consumed per annum would be 100x2500 = 250,000kwh.

I am pleased you said that, the post above yours confused me.

I always use the electric heater analogy that every grand parent has in their sitting room. 1 bar on the fire is 1 kw. Have all 3 on it uses 3 kw's / hr, at 10p / kWh thats 30p an hr when running flat out - too expensive put a jumper on boy!

thesilentone · Aug 23, 2017

..just to make life interesting 1.0kwhr = 3400 BTU............I think

akaPABLO01 · Aug 23, 2017

Doing it for the kids said:
I am pleased you said that, the post above yours confused me.

I always use the electric heater analogy that every grand parent has in their sitting room. 1 bar on the fire is 1 kw. Have all 3 on it uses 3 kw's / hr, at 10p / kWh thats 30p an hr when running flat out - too expensive put a jumper on boy!

How can you use 100kW per annum, surely the size of system is 100kW?

warksfarmer · Aug 23, 2017

akaPABLO01 said:
I guess you just have the survey suggesting 100kW boiler will service the annual heat demand. You could do with the bit before which is the annual heat requirement.

Also, if the building is habitable or your drying then you won't need heat for 2,500 hours. You are probably looking at half this 1,250 hour or 8 hours a day for 6 months if it's for human consumption not forgetting minus weekends/bank holidays unless it's lived in.

You could do with providing more info such as usage of heat for a start.

Very large workshop (48m x 24m x 12m to apex) with people in it 6 days per week 50 weeks/year.

akaPABLO01 · Aug 23, 2017

warksfarmer said:
Very large workshop (48m x 24m x 12m to apex) with people in it 6 days per week 50 weeks/year.

You'll need blow heaters to do the workshop. What's the roof like, walls and is there a large roller door for your machinery?

Still Farming · Aug 23, 2017

Kwhrs therms ?

Doing it for the kids · Aug 24, 2017

6 blow heaters would do that I reckon, we have similar here

f0ster · Aug 24, 2017

you can get them from kotly.com.pl

Kw to kWh

warksfarmer

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akaPABLO01

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Yale

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Doing it for the kids

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thesilentone

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akaPABLO01

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warksfarmer

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akaPABLO01

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Still Farming

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Doing it for the kids

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f0ster

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