Asked in Math and Arithmetic, Units of Measure, Physics
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. ...
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. ...
Asked in Math and Arithmetic, Algebra
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 to raise air temperature 1 deg?
It doesn't work that way. There is not a certain number of btus to raise air temperature. You would have to know how much air. A BTU is the British Thermal Unit. That is the amount of energy required to raise the temperature of one pound of water one degree F. ...
Asked in Wood-Burning Stoves
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) ...
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...
Asked in Heating Ventilating and Air Conditioning, Math and Arithmetic, Mechanical Engineering, Temperature
How many BTU's does it take to evaporate one pound of water?
BTUs to Evaporate One Pound of Water Quick Answer: Somewhere around 1000BTU/lb Long answer: It depends on the temperature of the water you start with. Before you can evaporate the water, you must heat it to it's boiling point. The warmer the water you start with the fewer BTUs will be needed to heat the water to its boiling point. Keep in mind the BTUs require to raise the water to its boiling point are very few compared to the BTUs required...
Asked in Math and Arithmetic, Algebra, Temperature
How many BTUs does it take to heat one pound of water from 80 degree F to 212 degree F?
212 - 80 = 132 degrees temperature increase x 1 pound water = 132 BTU
Asked in Temperature
How many btus are required to change 5 pounds of ice at 32 degrees to steam at 82 degrees?
The question cannot be answered because: the temperature scale being used has not been specified, There is no normal temperature scale in which you can have ice at 32 degrees and steam at 82 degrees without large changes in pressure. If changes in pressure are permitted then there is no simple formula to calculate the amount of heat (btus) required. ...
Asked in Heating Ventilating and Air Conditioning, Math and Arithmetic, Chemistry, Thermodynamics and Statistical Mechanics
How many BTUs are needed to heat one gallon of water to 200 degrees?
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 <---------------- ...
How many BTUs are required to raise 2 lbm of water 100 degrees F at 100 psia?
202.3 btu According to Keenan and Keyes, 1 lb of water at 100psia requires 298.4 btu to raise it's temperature from 32 degrees to 327 degrees F. that is 1.0115 btu per pound. So 2 lbs of water would require 202.3 btu to raise it's temperature at 100 psia 100 degrees F. (from between 32F-227F to a higher temperature between 132F-327F) At 100psia any addition of heat to water at 327F will result in the generation of steam and no increase in temperature. **Note:...
Asked in Home Electricity, Plumbing, Home Appliances
How do you determine the Btus in your electric hot water heater?
A BTU is the amount of energy required to raise the temperature of 1 pound of water 1 degree Fahrenheit (F) at or near 39.2 degrees F and 1 atmosphere of pressure. Electric heaters are rated in KW, not BTU's 3413 BTU's = 1 KW-hr. Check the link below for a PDF on water heater sizing. ...
Asked in Science, Chemistry, Rain and Flooding
How much heat is it to heat 500g of water from 5 degrees to 75 degrees?
BTU: British Thermal Unit, the amount of energy it takes to raise one pound of water one degree Fahrenheit. In this case 500g(x aproximatly 8 pounds per gallon) or 4000 pounds x 70(the difference from 5 degrees to 75 degrees), which equals 280,000 BTUS ...
Asked in Math and Arithmetic, Physics, Algebra
How many BTUs will it take to change 1 gallon of water at 32 degrees to ice at 32 degrees?
You would need to remove approximately 1200 BTUs of heat to convert a gallon of water to ice. There are 8.34 lb in a gallon of water, which converting to lb-moles is 0.463. The latent heat of crystallization for water is -2583.4 BTU/lb-mole. Multiplying the two together and you get -1197 BTUs, which means you need to remove that amount of heat to convert the gallon of water to ice. ...
Asked in Heating Ventilating and Air Conditioning, Math and Arithmetic, Physics, Evaporation and Condensation
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. ...
How many BTU needed to operate 30000 gallon pool at 80 degrees?
It takes 8.34 BTU to heat 1 gallon of water 1 degree F. Take 8.34 BTU times number of gallons to determine energy needed to raise pool 1 degree F. Then multiply by how many degrees you need to raise the temperate of the current pool temperature to the desired temperature. Example: 8.34 * 30,000 gal = 250,200 BTU need to raise temperature 1 degree F Next multiple by the number of degrees to warm, say the pool is 55 F. 80F -...
Asked in Physics
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 in 650 degrees F?
there is no conversion from temperature to BTU unless you know the mass and specific heat of a substance at a certain temperature. Then you could calculate the BTU required to heat the substance from a known starting temperature up to an ending temperature. ...
How many btus to reduce water temperature one degree?
That depends on how much water you have, and what temperature it's starting at. If you have one pound of water, and its temperature is 40Â° F, then it will cool to 39Â° F if you pull exactly one BTU of heat out of it. Different amounts of water, or different starting temperature . . . different amounts of heat. ...
Sizing btus for a window air conditioner?
BTU's or British Thermal Units are used to decide the amount of air that can be altered in a set time limit. The larger the air mass you need to change temperature of in a set time determines the BTU rating of the apliance you need. The more cubic area you have the greater BTU rating will be. Actually 1 BTU is equal to the energy required to raise 1 pound of water from 60 degrees to 61 degrees in one...