Btu Water Chart

2 c to 2 c or from fluid to gas e g.

Btu water chart. It was first used in the late 1800s and has since become one of the most common units of classification in heating cooling appliances. One btu is the amount of heat energy required to raise one pound of water by 1ºf. 1 btu 1 055 joules 252 calories 0 293 watt hour or the energy released by burning one match. How to find how many btus your furnace should be.

Btu stands for british thermal units and is a measurement of thermal energy. A btu is a relatively small amount of energy. But when the state of water changes from solid to fluid e g. About equivalent to the heat generated by striking 1 stick match.

It is defined as the amount of heat required to raise the temperature of one pound of water by one degree fahrenheit it is also part of the united states customary units. 1 btu hr 0 29307107 w. The british thermal unit btu or btu is a unit of heat. Btu calculator btu formulas for water circulating heat transfer.

Calculate tons of cooling capacity tons btu hr. Oversize the chiller by 20 ideal size in tons tons x 1 2. It is approximately the energy needed to heat one pound of water by 1 degree fahrenheit. Hi john it takes the same amount of energy to heat water from 48 degrees to 52 degrees as it takes to heat water from 58 degrees to 62.

40gpm x 60 x 8 33 x 12 f 239 904 btu hr. 1 watt is approximately 3 412 btu per hour. For example what size chiller is required to cool 40gpm from 70 f to 58 f t f 70 f 58 f 12 f. How to convert btu hr to watts.

1 btu is the energy needed to heat 1 pound of water by 1 fahrenheit. The british thermal unit or btu is an energy unit. You have the ideal size for your needs. P w 20000 btu hr 3 412141633 5861 42w.

P w p btu hr 0 29307107 p btu hr 3 412141633. The specific heat is given at varying temperatures c and f and at water saturation pressure which. Water weighs 8 33 pounds per gallon so we can calculate that one gallon of water requires 8 33 btu to raise the temperature 1ºf. So the power p in watts w is equal to the power p in btus per hour btu hr times 0 29307107 and is equal to the power p in btus per hour btu hr divided by 3 412141633.

Btu content of fuels. Its counterpart in the metric system is the calorie which is defined as the amount of heat required to raise the temperature of one gram of water by one degree celsius. A british thermal unit btu is a measurement of heat energy. 98 c to 102 c this does not hold true any more.

We often refer to the british thermal unit as a btu but the rating is actually the btus per hour or btu h. When calculating mass and volume flow in a water heating systems at higher temperature the specific heat should be corrected according the figures and tables below. What is a btu. Specific heat c is the amount of heat required to change the temperature of a mass unit of a substance by one degree.

1 btu is the energy needed to heat or cool one pound of water 1 degree fahrenheit at sea level. A btu is an abbreviation for b ritish t hermal u nit which is the amount of energy required to raise 1 pound of water 1 degree fahrenheit at sea level.