How many BTUs are needed to heat one gallon of water to 200 degrees?

Answer 1

Assume the water is initially at 40 F and 14.7 psia.

m = ( 1.0 gal ) ( 1.0 ft^3 /7.4805 gal ) ( 62.43 lbm / ft^3 ) = 8.346 lbm

Q = Delta U = ( m ) ( Cv ) ( T2 - T1 )

Q = ( 8.346 lbm ) ( 1.00 Btu / lbm - Fdeg ) ( 200 F - 40 F ) = 1335 Btu <----------------

Answer 2

The specific heat capacity of water is approximately 4.18 Joules per gram per degree Celsius. One gallon of water weighs about 8.34 pounds or 3,785 grams. To raise the temperature of one gallon of water from room temperature to 200 degrees Fahrenheit (93.33 degrees Celsius), you would need about 3,785 * 93.33 * 4.18 = 1,483,457 Joules or approximately 1,409 BTUs of energy.

Answer 3

8.33 btu if the gallon is US measure, 10 btu if the gallon is british measure.

A btu is the amount of heat required to raise 1 pound of water 1 degree fahrenheit at atmospheric pressure (14.696 psia).

Answer 4

I depends of the starting temperature of the water.

A BTU is the amount of energy required to raise 1 pound of water 1 degree Fahrenheit ... water weighs about 8.34#/gal ... so 8.34 BTU's are required to raise 1 gallon of water 1 degree F. If your starting temperature of the water was 40 degrees F ... there would be 160 degree rise to 200 degrees or ...

1,334 BTU's are required to raise 1 gallon of water from 40 degrees to 200 degrees Fahrenheit

.

Answer 5

Since a BTU is defined as the amount of energy required to raise 1 lb of liquid water 1 degree Fahrenheit we could calclate the answer as follows:

19000 lb x (212-166)°F x 1 BTU/lb/°F = 874,000 BTU

This assumes that you only want to raise it to 212°F but not boil it (212 °F is the normal boiling point of water at atmospheric pressure). If you wanted to warm it up AND turn it to vapor, you would have to add 970.4 BTU per pound vaporized. If you vaporized the entire 19000 lb, it would thus take a total of

874,000 + 19000 x 970.4 = 874,000 + 18,437,600 = 19,311,600 BTU

Rounded to the maximum justifiable significant figures it would be 1.93x107 BTU.

Answer 6

The definition of BTU is the amount of energy necessary to raise 1 pound of water by 1 °F (see related link). Taking the density of water (at 40°F) as 8.3451 pounds per gallon, we have 333.804 pounds of water (see other related link). The temperature difference is 212° - 40° = 172°F. So it takes (333.804 BTU) to raise this amount of water by 1°F, so multiply by 172 to get total BTU = 57414 BTU

Answer 7

It takes 8.33 BTU to raise the temperature of water 1 degree F.

Answer 8

You can assume two temperatures, and calculate the amount of energy required to heat the water from one temperature to the other. Then convert that to BTU.

Answer 9

5 Gal of water from 36 TO140F

Answer 10

Approx 8090 BTU