kwh needed to raise 150 ltr of water from 10 deg to 55 deg?

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kwh needed to raise 150 ltr of water from 10 deg to 55 deg?

has anyone got a formula for the above

its related to a gas boiler

2007-02-17 07:43:55 · 2 answers · asked by jon b 1 in Home & Garden ➔ Other - Home & Garden

2 answers

energy = mass X specific heat capacity of water X temp rise

= 150 X 4200 X 45

= 28 350 000 joules

1 kWh = 3 600 000 joules

so .... energy needed = 28 350 000 / 3 600 000

= 7.9 kWh

2007-02-17 07:57:04 · answer #1 · answered by Anonymous · 0⤊ 0⤋

Vol(l) x temp rise/Time (mins) x 14.3

150 x 45 / 60 x 14.3

6750 / 858 = 7.86 Kw/h

An 80,000 Btu boiler should take about 25-40 mins depending on losses.

2007-02-17 20:32:54 · answer #2 · answered by jayktee96 7 · 0⤊ 0⤋