A certain amount of fuel contains 15 x 10loBtu of energy Wha

A certain amount of fuel contains 15 x 10loBtu of energy. What is the corresponding energy in kilocalories?

Solution

the British thermal unit (BTU or Btu) is a traditional unit of work equal to about 1055 joules. It is the amount of work needed to raise the temperature of one pound of water by one degree Fahrenheit (Physical analogue: one four-inch wooden kitchen match consumed completely generates approximately 1 BTU). In science, the joule, the SI unit of energy, has largely replaced the BTU.

The BTU/h is most often used as a measure of power in the power, steam generation, heating, and air conditioning industries. It is still used in some metric English-speaking countries of fuels is expressed in BTUs.

The British thermal unit (BTU or Btu) is a traditional unit of work equal to about 1055 joules

1 kcal_th = 4184 J

The energy in joules E_(J) is equal to the energy in kilocalories E_(kcal-th) divided by 4184:

E_(kcal) = E_(J) / 4184

Converting energy units from british thermal unit to kilocalorie

1 Btu = 0.25219021687207 kcal

So 15 x 10¹⁰ btu   = 0.25 x15 x 10¹⁰ kcal

                                                        ⁼ 3.75x 10¹⁰ kcal