Question About 'Btu required to heat water'

How many BTU does it take to heat 1 gallon of water?

One BTU is the amount of heat energy required to raise one pound of water by 1ºF . 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.

How many BTUs to heat water 10 degrees?

Where C p is the heat capacity of water (1 BTU/lb/F) and m is the mass of the water (Assume 1 gal has 8.3 lb of water and the 3,412 BTU = 1 kWh) In a 10 year period, the energy required is 166,622,500 BTU which is equal to 48,834 kWh . In a 10 year period, the energy required is 136,327,500 BTU which is equal to 39,995 kWh .

How do you calculate BTU?

Calculate the area in square feet of the space to be cooled, and multiply by 31.25. Calculate the heat gain through the windows. Calculate the heat generated by occupants, allow 600 BTU per person.

How many BTUs do you need to boil water?

You have all heard of the BTU of heat energy (British Thermal Unit), it takes one BTU to raise one pound of water one degree Fahrenheit. So if the water in the pan on the stove is put in at 32°F, it will then require 180 BTU’s to bring the water to boiling temperature, or 212°F.

pdf for "btu required to heat water".(Page 1 of about 18 results)

"btu required to heat water"

pdf ico  Btu Required To Heat Water

heat for being transferred into the better the temperature of the material does we change. Peter to delete this and durable in btu to heat water storage water heaters, the high btu. Even if you hire a pool professional to come near your proof and size your heater for you, think WE are FIRE expert has included three suit your consideration.

pdf ico  What Does It Cost To Heat Your Water? - ScaleSafe

Aug 01, 2013 · Btu’s to heat a gallon of water with gas 1131 Btu’s is 0.0113 therms. It will take 0.0113 therms to heat a gallon of water, or 0.0113 x 1000 = 11.31 therms to heat 1000 gallons. At $1.20 /therm, it costs 11.31 x $1.20 = $13.58 to heat 1000 gallons. Cost To Heat Water Using Electricity A typical electric water heater is 90.4 to 95% efficient ...

pdf ico  Residential Water Heaters: Guide to 2019 Energy Code …

Dec 17, 2019 · Natural gas or propane tankless water heater with an input rating of 200,000 BTU per hour or less Natural gas or propane storage water heater with an input rating of 75,000 BTU per hour or less Electric Resistance, 60 gallons or less, or Tankless Electric (allowed only if natural gas is not available to building. 1) Electric Heat Pump

pdf ico  Characteristics of water - EMS

Characteristics of water Boiling point – 212F @ sea level, higher altitudes? Freezing point - 32F Specific heat – 1.0 Ammonia has highest ice and steam SH = .5 Specific weight 1.0 Latent heat of fusion – 144 BTU/lb. Latent heat of vaporization – 970 BTU/lb. PH – 7 neutral – (less is acid more is base) Mpemba (IM PEM BAH)effect

pdf ico  Overview General heat rate: Heat Rate (Btu/kWh) = Energy …

unit heat rate is to 3,412 Btu/kWh, the more efficient and cost-effective the operation. An increase in heat rate results in an increase in fuel consumption; whereas, decreasing heat rate equates to a reduction in the fuel required to produce a given number of kWh of energy. Although heat rate is a key consideration in any purchasing decision,

pdf ico  Chromalox Determining Heat Energy Requirements …

Btu/lb required to heat the liquid to the condi-tion indicated starting with water at 32°F. Latent heat is the heat energy in Btu/lb absorbed when a pound of boiling water is converted to a pound of steam at the same temperature. The same amount of heat is released when the steam condenses back to water at the same temperature. Latent heat

pdf ico  3.6 Public Utilities and Energy

• Energy—Energy is commonly measured in terms of British thermal units (Btu). A Btu is defined as the amount of heat required to raise the temperature of 1 pound of water by 1 degree Fahrenheit. For transportation projects, energy usage is predominantly influenced by the amount of fuel used for construction and operation. The average Btu ...

pdf ico  HVAC Rule of Thumb Calculator - Engineering Pro …

1 Btu = 0.293 watthour 1 watthour = 3.412 Btu 1 Btu/h = 3.93x10-4 HP 1 HP = 2,545 Btu/h 1 HP = 0.746 kW 1 kW = 1.34 HP There are two main sets of units that should be discussed in more detail, (1) EER and (2) SEER. First, you need to understand that the efficiency of air conditioners in the refrigeration

pdf ico  Basic Energy Units, Terms and Calculations

• Btu (British Thermal Unit)- energy required to heat one lbm of water one degree Fahrenheit −1 Btu = 778.16 ft-lbf = 1.055 kJ = 0.252 Cal −Commonly used measure of fuel energy, heating and cooling quantities −1 MBtu = 1000 BTU; 1 MMBtu = 10 6 Btu −1 Quad = 10 15 Btu (billion 10 9, trillion 10 12, quad rillion) −1 Q = 10 18 Btu

pdf ico  Hot Water Heater Sizing Guidelines for Food …

Therefore, a water heater would be required which will recover 197 GPH. c. To compute a BTU or KW rating for the required hourly hot water demand found in example a, the following formulas should be used: Formula 1 (for gas water heaters) BTU input = GPH x °Rise x 8.33 lb./ gallon of water Thermal Efficiency BTU input = 54 GPH x 60°F X 8.33 lb.

pdf ico  2019 Energy Code (Energy Standards) Water Heating …

3. Unfired service water-heater storage tanks and solar water -heating back up tanks must have/meet one of : A. External insulation, R -12 or more B. Internal and external insulation, R -16 or more (combined) C. Tank surface heat loss < 6.5 BTU per hour per square foot (water -air temperature difference of 80°F) 15

pdf ico  WATER HEATER SIZING GUIDELINES - San Diego County, …

of the computed hourly hot water demand must be provided. Therefore, a water heater would be required which will recover 197 GPH. F. To compute a BTU or KW rating for the required hourly hot water demand found in example #1, the following formulas should be used: Formula 1 (for gas water heaters): $ 6 7 = ) 2 * + J L Q P 5 : : < ,.

pdf ico  Heat Exchanger Control & BTU Calculation - Yokogawa

BTU is defined as the quantity of heat required to raise the temperature of one pound of water 1°F. The equation for heat transfer to a liquid is as follows: Q=W(T2-T1)Cp Q=Heat transfer per unit time (BTU/hr) W=Mass flow rate (lb/hr) T2=Outlet temperature (°F) T1= Inlet temperature (°F) Cp=Specific heat capacity (1.0 BTU/lb for water) The ...

pdf ico  Chapter 11 Energy in Kiln Drying - US Forest Service

212 °F). For water, the latent heat of fusion (ice to liquid) is considerably lower, 144 Btu/lb. Heat Capacity The heat capacity (or specific heat relative to water) of solids, liquids, and gases is by definition the amount of energy (Btu) required to heat 1 lb of material 1 °F. The actual value will differ with the physical or chem-


greatly reduce heat losses and power consumption. E.g. Company A has a 7000 l tank tank is well insulated and initial heat up time is not critical. 7000 x 1 x 60 860 x 12 hours mass x specific heat x temperature rise 860 x heat up time (hours) itre degreasing with a temperature of 60°C. The The company needs to determine the power required.


1 KW = 3413 Btu = 4.1 Gals. @ 100°F Rise Determine % of hot water portion of total mixed water requirements M-C = 140-40 = 100 = 71.5% of mixture H-C 180-40 140 is hot water % of cold water in mixture is: 1 ∅ 3 ∅ (Balanced Circuits) Watts = Amps .577 X Watts = Amps H-M = 180-140 = 40 = 28.5% of mixture Volts Volts

pdf ico  +HEAT INPUT

one gallon of water one degree. A Btu may be sensed and visualized as about the amount of heat produced by burning one wooden match. One watt-hour of electricity produces 3.413 Btu. This is the formula for determining the Btu required to heat a given quantity of water a certain number of de-grees: Gallons x 8.25 x 1.0 x temp. rise = Btu


of hot water to a higher temperature for a specific purpose, such as for thesanitizing rinse on a high temperature automatic dishmachine. B. BTU (British Thermal Unit): The quantity of heat required to raise the temperature of one pound of water one (1) degree Fahrenheit.