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To do so, we divide the BTU/hour by a constant of 33,475. This constant represents water being converted to steam, which is 34.5 pounds of water multiplied by 970.3 BTU/lb, or latent energy. For this calculation, you will enter the BTU/hr of your operation along with the efficiency of your boiler.

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Learn MoreFeb 12, 2017 · Solution: For tubing up to and including 5 in O.D., use equation above. P = [580 psi] D = [2.75 in] e = 0 (strength welded) S = [11,800 psi] at [650°F]) Note: Where the manufacturing processes produce only standard plate thickness, so should be used 1/8 in (3.2 mm) minimum. Calculator Preview.

Learn More2) Calculate the heat transfer Surface, A=Q/ (U*LMTD) 3) Select a tube diameter and suitable tube length ==> number of tubes and Shell diameter can be determined. 4) Now you have a proposed heat

Learn MoreMay 17, 2019 · Recommended steps. Fix the inlet/outlet temperature values. Calculate LMTD. Select a shell and tube heat exchanger (TEMA) tube. Decide on shell and tube geometry. Calculate heat transfer area based on selected geometry (A Overall) Get the overall

Learn MoreThe number of tube N t can be predicted in fair approximation with the shell inside diameter D s. ( ) ShadeArea D N CTP s t π 2 4 = (5.135) where CTP is the tube count constant that accounts for the incomplete coverage of the shell diameter by the tubes, due to necessary clearance between the shell

Learn MoreSep 10, 2011 · Re: Number tubes required Post by admin » Fri Sep 09, 2011 4:23 pm Based on the heat exchange power, fluid properties - specific heat - and available or required temperature change, area for heat exchange can be calculated.

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