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Heat Transfer Equations
 

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The most useful resource I had earning my PE was a book of equations that was a companion to HP48 equation library. I didn't use the built in libray much, but the book of equations was an invaluable resource, and I still occasionaly use it as a resource. It is borken down into various engineering subcategories. I intend to have each of the catgories done wih XLC, but this file includes:

Heat Transfer 45 equations in these categories:  Coefficent of Heat Transfer, Film Coefficent, Heat Exchanger, Heat Flow Through Various Shapes, Radiant Heat Flow

 All formulas pull from a common set of variables 

 

A = ft2 Area
cp = Btu/lbm-ºR Specific Heat
D0 = ft Outside Diameter
Di = ft Inside Diameter
EE=    
Fa = None Shape Factor
Fc = None Correction Factor
Fe = None Emmissivity Factor
h = Btu/hr-ft2 Film Coefficent
h = Btu/lbm Enthalpy
h0 = Btu/hr-sf-ºR Outside Film Coefficent
h1 = Btu/lbm Enthalpy
h2 = Btu/lbm Enthalpy
hfg = Btu/lbm Enthalpy of Vaporization
hi = Btu/hr-ft2-ºR Inside Film Coefficent
ho = Btu/hr-sf-ºR Outside Film Coefficent
K = Btu/hr-ft-ºR Thermal Conductivity
K1 = Btu/hr-ft-ºR Thermal Conductivity
K2 = Btu/hr-ft-ºR Thermal Conductivity
K3 = Btu/hr-ft-ºR Thermal Conductivity
Kins =    
Kp =    
L = ft Thickness
L1 = ft Thickness
L2 = ft Thickness
L3 = ft Thickness
LMTD= ºF Log Mean Temp. Difference
m = lbm Mass
n = None Coefficent (turbulent heat flow through pipe)
Npr = None Prandtl Number
Nre = None Reynolds Number
q = Btu/hr Heat Flow
qr =    
r = None Transient Heat flow time constant
r0 = ft Outer Radius
ri = ft Inner Radius
rt = ft Insulated Pipe's Total Radius
t0 = ºF Cold Fluid Outlet Temperature
Ti = ºF Temperature
T0 = ºF Temperature
ΔTi= ºF Temperature
ΔT0= ºF Temperature
Δt= ºF Temperature
ti = ºF Cold Fluid Inlet Temperature
Tp = ºF Thermalcouple Probe Temperature
ts = ºF Surface Temperature
tsv = ºF Saturated Vapor Temperature
Tw = ºF Wall Temperature
TΦ =    
U = Btu/hr-ft2-ºR Overall Heat Transfer Coefficent
U0 = Btu/hr-ft2-ºR Pipe's outside Heat Tranfer Coefficent
v =    
Δh=    
μ1 = lbf-s/ft2 Absolute Viscosity
ρ = lbm/ft3 Body's Density
ρ1 = lbm/ft4 Liquid Density
ρv = lbm/ft5 Vapor Density
T1 = ºF Temperature
T2 = ºF Temperature

Calculation Reference
Heat Transfer
| Find on Amazon.com | Find on Amazon.co.uk | Find on Amazon.fr | Find on Amazon.de | Find on Amazon.ca |
Heat Exchanger
| Find on Amazon.com | Find on Amazon.co.uk | Find on Amazon.fr | Find on Amazon.de | Find on Amazon.ca |
Heat Engines
| Find on Amazon.com | Find on Amazon.co.uk | Find on Amazon.fr | Find on Amazon.de | Find on Amazon.ca |

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Submitted On:
11 Apr 2012
Submitted By:
peachsb
File Date:
11 Apr 2012
File Author:
Scott Peach
File Version:
1.0
File Size:
432.60 Kb
File Type:
xlsx
XLC:
This download requires the XLC Add-in for Excel to be installed.
Downloads:
27
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Comments  

 
#3 JohnDoyle 2012-04-11 14:57
I wonder if it would be worth uploading a version of the calculation with some typical values inserted if only to prevent #DIV/0! errors?
 
 
#2 JohnDoyle 2012-04-11 14:48
Scott this is a really useful Swiss army knife of a spreadsheet. Could you just take a look to the formula on worksheet 'Heat Transfer' cell AB60 and L116 - XLC seems to be indicating an error. If you need to update your spreadsheet take a look to the instructions here.
 
 
#1 JohnDoyle 2012-04-11 14:44
Thanks for your contribution Scott I have awarded a six month XLC Pro subscription by way of thanks.
 

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