Heat Transfer CoefficientsHeat Transfer Coefficient CalculationsSaturated Water Properties at Different Temperatures:(SI Units)InstructionsThis Worksheet will allow you to calculate heat transfer coefficients (h) for convection situations that involve internal flowspecific vol.specific heatviscositythermal cond.Prandtl #in a tube of given cross-section. The sheet will allow you to input your tube cross section specifications (perimeter, area, diameter),TempnuTempCpTempmuTempkTempPrto define desired flow rates, to calculate Reynold's numbers and Nusselt numbers, and finally to find the local heat transfer coefficient (h).270Outside Range270Outside Range270Outside Range270Outside Range270Outside RangeEach Section of the sheet is surrounded by a border with a heading, and includes an important step in the calculation process. You, the user,2730.00127342172730.001752730.56927312.99must fill in every box that is surrounded by a double border like below. You must also select entries from all drop-down menus.2750.00127542112750.0016522750.57427512.22Fill in these boxes - NOT others2800.00128041982800.0014222800.58228010.26All calculated numbers are returned in plain boxes, but in bold and italic text - these are the results. In addition, the sheet allows you to specify2850.00128541892850.0012252850.592858.81certain units (like flow rates and tube sections).2900.00100129041842900.001082900.5982907.562950.00100229541812950.0009592950.6062956.62TUBE SECTION3000.00100330041793000.0008553000.6133005.83Fill in data for either a circular tube or a non-circular tube.3050.00100530541783050.0007693050.623055.2CIRCULAR OR NON-CIRCULAR TUBEUsing Non-circular Section - Not Needed0.3753100.00100731041783100.0006953100.6283104.62Select Your Unit of Length:13150.00100931541793150.0006313150.6343154.16in = inchesArea (your units^2) =0.0983200.00101132041803200.0005773200.643203.77mm = millimetersPerimeter (your units) =1.2853250.00101332541823250.0005283250.6453253.42Select Your Type of Cross Section:23300.00101633041843300.0004893300.653303.15circular3350.00101833541863350.0004533350.6563352.88non-circular3400.00102134041883400.000423400.663402.66Hydraulic Diameter (4A/P) (your units) =0.30505836583450.00102434541913450.0003893450.6683452.45Your Cross Sectional Area (m^2) =0.0000632257"A"3500.00102735041953500.0003653500.6683502.29Your Effective Tube Diameter (m) =0.0077484825"D"3550.0010335541993550.0003433550.6713552.143600.00103436042033600.0003243600.6743602.02FLOW RATE3650.00103836542093650.0003063650.6773651.91Specify flow rate and the units you are using.3700.00104137042143700.0002893700.6793701.8Select Flow Rate Specification:13730.00104437342173730.0002793730.683731.76GPM = gallons per minute375Outside Range375Outside Range375Outside Range375Outside Range375Outside RangeFPS = feet per secondMPS = meters per secondFlow Rate (Your Units) =4.1Flow Rate (m/s) =4.193443761"V"REYNOLD'S NUMBER CALCULATION and PROPERTIESUnits are set in S.I. Form; however, the Reynold's number itself is non-dimensional.Also, this sheet will use water properties unless otherwise prompted (by entering "custom values").Please NOTE: water properties in this sheet are only available for 273 to 373K. You must use customvalues outside of this range.Re calculated using diameter:Hydraulic DiameterCoolant Type:1water = standard water properties (automatic)custom = your own values (fill in custom spaces)Estimated Mean Coolant Temp (Tm) (K):295WATER PROPERTIES:CUSTOM PROPERTIES:nu (specific volume in m^3/kg) =0.001002roe (density in kg/m^3) =20roe (density in kg/m^3) =998.003992016mu (viscosity in kg/(m*sec)) =2mu (viscosity in kg/(m*sec)) =0.000959k (thermal conductivity in W/m^K) =2k (thermal conductivity in W/m^K) =0.606Pr (Prandtl # in non-dimensional units) =2Pr (Prandtl # in non-dimensional units) =6.62NOTE: You do not need these if using water between273 and 373 Kelvin.Reynolds Number (Re = roe*V*D/mu) =33814"Re"NUSSELT NUMBER CALCULATIONSBased on the Reynold's number, the Nusselt number will be calculated. There are three basic flow ranges in which the heat transferdiffers substantially - the laminar region (Re