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How many btus will it take to raise 50 pounds of ice at 32 degrees to water at 160 degrees?
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What is thermal energy and what is it measured in?
Thermal energy is heat. It's what melts substances, changes temperatures, or vaporizes substances. It is measured in calories, joules or british thermal units. 252 calories = 1 b.t.u.,It takes 144 btus to melt 1 pound of ice at 32 degrees, 180 btus to raise 1 pound of water in temperature from 32F to 212F and 970.2 btus to make 1 pound of steam at 212 degrees.It takes 80 calories to melt 1 gram of ice at 0 degrees C, 100 calories to raise 1 gram of water in temperature from 0C to 100C and 538.6 calories to make 1 gram of steam at 100 degrees C.the calorie is equal to 4.1868 joules so that:It takes 334 joules to melt 1 gram of ice at 0 degrees C, 418.68 J to raise 1 gram of water in temperature from 0C to 100C and 2255.0 J to make 1 gram of steam at 100 degrees C.Answer'Thermal energy' is an obsolete term, long replaced by the term, 'internal energy'. Heat is not the same thing as internal energy, but is described as 'energy in transit' between a warmer body and a cooler body. In SI, all forms of energy, including energy in transit, are measured in joules.The British Thermal Unit (BTU) is an imperial unit used rarely outside the United States. The calorie is an obsolete unit used to measure energy in the cgsA system of measurement (despite this, for some reason, the food industry clings onto this unit, expessing the energy available from food in kilocalories).
How many BTU are generated to get water to 212 degrees?
This question is a little confusing in that BTUs are not generated in raising the temperature of anything; the input of heat is required. And if the questioner meant required instead of generated, then the question is still unanswerable as the amount of water must be specified, AND the starting temperature must be specified.
If you were to extract enough BTUs to lower 100 pounds of water 10 degrees C and were to convert that perfectly to mechanical energy how high could you raise the temperature of one pound of steel?
This is a question of heat capacity. The specific heat of water is about 9.3 times that of iron (I don't have a figure handy for steel but iron must be similar). So the heat extracted from the water is (weight of water) x 10 x (specific heat of water). The heat given to the steel will be (weight of steel) x T x (specific heat of steel). These are equal. So: T = (Weight of water)/(Weight of steel) x 9.3 x 10 = 9,300 deg C. This of course can't be done-thermodynamics doesn't allow heat to pass from a cooler to a hotter body. But it illustrates how much heat water contains. I know about that from paying to heat my swimming pool!
What amount of heat energy in Btus is required to raise the temperature of 45 pounds of lead from 62 degrees F to 100 degrees F?
You like the old units! I'll work in SI then give you the answer in BTU. Specific heat capacity of lead = 0.127 KJ.Kg-1.C-1 (kilojoules per kilogram per deg C). 45 lb = 20.41 kg. 100 - 62 = 38 deg F = 21.11 degC. So heat energy = 0.127 x 20.41 x 21.11 = 54.72 KJ. 1 KJ = 0.9478 BTU
How many btus does it take to heat up one gallon of water?
That depends on what the starting temperature of the water is,and what temperature you want it to reach.If you expect to get a number, you must first give the necessary numbers.
How many btus does it take to raise of 5 pounds of water to 5 degrees Fahrenheit?
25
How many Btus will it take to raise 10 pounds of water from -5 to 220 Degrees?
2250
How many BTUs does it take to raise the temperature of water from 32 degrees to 300 degrees?
That will completely depend on how much water there is.
How many btus are required to change five pounds of ice at 20 degrees to steam at 220 degrees?
6,520 Btus
How many Btus will it take to raise 10 pounds of Ice from -5 to 220 Degrees?
If you're in Celsius, 13459.5 Btu's. If you're in Fahrenheit, 12632.5 Btu's.
How many btus does it take to raise half pound of water 1 degree?
One BTU is the energy required to raise one pound of water by one degrees. Therefore, your answer would be one half.
How many BTUs does it take to heat 390 gallon tank of water from 60 degrees to 248 degrees?
The specific heat of water is 1 BTU per pound per degree Fahrenheit. There are 8.3378 lbs/gallon at 60 degrees, which equals 3251.742 pounds of water. The number of BTUs to raise it 188 degrees is then 611,327.496 BTUs.
What mass of water can be heated from 25 degrees celsius to 5 degrees celsius by the addition of 2825 joules?
None. Changing water from 25 degrees C to 5 degrees C requires heat to be REMOVED, not added!
What is 650 degrees in BTUs?
One measure does not directly translate to another. A BTU is the amount of heat that it takes to raise the temp of one pound of water by one degree F. A burning match, and a burning fireplace may both be at 650 degrees, but the fireplace gives off more heat (more BTUs)
BTUs to melt one pound of ice?
From high school science class; it takes 144 BTUs to melt a pound of ice. That takes it to 32 degrees F. To then raise the temp to 72 deg., would take about 40 more BTUs.
How many Btu are required to raise the temperature of 15lb of water from 100F to 120F?
1 btu raises 1 lb water 1 degree F from 62 to 63 degrees. generally 1 btu/lb/degree F x 20 degrees F difference x 15 lbs = 300 btus specifically the heat of the liquid at 100F is 67.97 btus and at 120F = 87.92 btu 87.92 - 67.97 = 19.95 btu 19.95 x 15 lbs. = 299.25 btus to be more accurate
How many btu's in office water-cooler?
There are no BTUs in an office water-cooler. But you can calculate how many BTUs are removed by the cooler. One BTU or British Thermal Unit is the amount of heat energy required to raise the temperature of one pound of water one degree Fahrenheit. There for when you remove one BTU you are lowering one pound of water one degree Fahrenheit. So if you know how many pounds of water you have and the temperature of the water you start with and the temperature of the water comming out of the cooler you can calculate how many BTUs the cooling unit of the water cooler has removed. BTU=Temp1 - Temp 2 X LB water
