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.

doc for "btu required to heat water".(Page 1 of about 13 results)

"btu required to heat water"

doc ico  Required for combination ovens...

Required for combination ovens. Provide the number of steam pans the oven can accommodate based on measured test data, which will appear on the ENERGY STAR list of certified products. ... Gas Oven Steam Mode Pre-Heat Energy (Btu) ... Provide the calculated convection mode cooking-energy efficiency average water consumption rate value based on ...

doc ico  Welcome to Building Science Education Solution Center

When heat is transferred by conduction, it moves from molecule to molecule; no movement of the material plays a role in the transfer. In order for heat to move by conduction, materials must be in direct contact with each another. An example: When touching a hot pan on a stove, conduction of heat moves from the stove to the pan to your hand.

doc ico  Minimum Efficiency Requirements Tables for …

a Three phase heat pumps in the <65,000 Btu/h category are not covered by ENERGY STAR . ... Performance Required. Electric storage water heaters. ≤24 A and ≤250 V. ... a Energy factor (EF) is an efficiency ratio of the energy supplied in heater water divided by the energy input to the water heater. Gas Furnaces . Warm-Air Furnaces: Minimum ...

doc ico  2020 Florida Energy Conservation

Heat pump 65,000 Btu/h. Gas furnace, non-weatherized Oil furnace, non-weatherized ... HSPFAFUE 80%. HSPFAFUE 83%. HSPF (Min) = AFUE (Min) = AFUE (Min) = Other: Type = Effic. (min) = Water heating system (storage type): Minimum federal standard required by NAECA2: ... The total leakage test is not required for ducts and air handlers located ...

doc ico  FE-Style Questions (not turned in) - University of Idaho

mass [lbm] of liquid water. mass [lbm] of water vapor. amount of heat transfer [Btu] required for cooling . Solve the above problem using EES. Additionally, overlay this this process on a P-v diagram that includes lines of constant quality. You have gas in a cylinder that obeys the polytropic relationship of p*V3 = constant.

doc ico  Evaporative Cooling - academic.

If so, find the volume flow rate of supply air and water consumption of the evaporative cooler. Direct / Indirect Evaporative Cooling System: Solution: Tc is function of Twb and Th. At given conditions, Tc = 73 F. Assume T2 = 78 F. For i3 = 24.7 Btu/lba and i4 = 26.8 Btu/lba, RH4 = 43%. Energy balance on space gives: ma(i3 - i4) + Qspace = 0

doc ico  Energy is one of the easiest areas of Environmental …

Assume that an input of 10,000 BTU of heat is required to produce an output of 1 kilowatt-hour of electricity. Show all your work to calculate: a. BTU of heat needed to generate the electricity produced by the power plant each day. b. Pounds of coal consumed by the power plant each day, assuming one pound of coal yields 5,000 BTU of heat.

doc ico  Cal Poly Pomona

98x10^15 / .32x10^9 = 3×10^8 btu/person. 3x10^8 / 20x10^6 btu/ton = 15 ton/person. A bicyclist on a flat road expends energy at the rate of 80 watts. How many calories of energy are expended in five minutes of pedaling? 80 J/sec (1cal/4.184J)(300sec) = 6000 cal. A windmill produces 1400 watts of electric power that is used to heat water.

doc ico  CHE 425 - CPP

The unit is designed with sufficient tube area to permit 15,000 gph of water to be heated from 70 to 140oF. In the course of this design, a dirt coefficient hd of 1000 Btu/hr(ft2(oF was assumed to allow for scaling on the water side of the tube. The film …

doc ico  California State University, Northridge

The convection heat transfer coefficient is 4 Btu/h(ft2(oF on the glycerin (shell) side and 50 Btu/h(ft2(oF on the water (tube) side. Determine the rate of heat transfer in the heat exchanger (a) before any fouling occurs and (b) after fouling with a fouling factor of 0.002 Btu/h(ft2(oF /Btu on the outer surfaces of the tubes.


If more than one shell-and-tube, domestic-water heat exchanger is required on Project, delete paragraph below and schedule shell-and-tube, domestic-water heat exchangers on Drawings. Capacity and Characteristics: ... Input Rating: Btu/h. Steam Pipe Size: NPT or FLG. Retain first subparagraph below if retaining "Steam Supply" Subparagraph above. ...

doc ico  CHAPTER 1

The mass flow rate of the cooling water required is to be determined. Assumptions. 1. This is a steady-flow process since there is no change with time. 2 . Kinetic and potential energy changes are negligible. 3 . ... Properties The specific heat of water is 1.0 Btu/lbm.(F (Table A-3E). The enthalpy of vaporization of water at 85(F is 1045.2 Btu ...

doc ico  CHAPTER 14

Properties The specific heat of water is 1.0 Btu/lbm.(F (Table A-3E). The enthalpy and entropy of vaporization of water at 120(F are 1025.2 Btu/lbm and sfg = 1.7686 Btu/lbm.R (Table A-4E). ... The work required and the heat transfer are to be determined. Assumptions 1 Steady operating conditions exist. 2 Changes in the kinetic and potential ...