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2-4 Shell and Tube Heat exchanger

Outline. 2-4 Shell and tube heat exchangerWhy we use it ?Problem 8.1. engineering-resource.com. Problem Statement. 33,114 lb/hr of n-butyl alcohol at 210 0F is to be cooled to 105 0F using water from 95 to 115 0F. Available for the purpose is a 19 in. ID, two- pass shell exchanger with 204 tubes

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2-4 Shell and Tube Heat exchanger

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    1. 2-4 Shell and Tube Heat exchanger engineering-resource.com

    2. Outline 2-4 Shell and tube heat exchanger Why we use it ? Problem 8.1 engineering-resource.com

    3. Problem Statement 33,114 lb/hr of n-butyl alcohol at 210 0F is to be cooled to 105 0F using water from 95 to 115 0F. Available for the purpose is a 19Ľ in. ID, two- pass shell exchanger with 204 tubes ľ. OD , 16 BWG, 16’0’’ long on 1-in .square pitch arranged for four passes. Vertically cut baffles are spaced 7 in. apart. Pressure drops of 10psi are allowable. What is the Dirt factor ? engineering-resource.com

    4. SOLUTION engineering-resource.com

    5. Data Available Shell Side Data Inside Shell Diameter = 19Ľ in Number of Passes = 2 Baffle spacing = 7 in Baffle type = Vertically Cut Allowable Pressure Drop = 10psi engineering-resource.com

    6. Data Available Tube Side Data Outside Diameter of Tubes = ľ in BWG = 16 Length of tubes = 16’0’’ Tubes Pitch = 1 in. Square Number of tubes = 204 Number of tube passes = 4 Allowable Pressure Drop = 10psi engineering-resource.com

    7. Location of Fluids Tube Side Fluid As water has more scaling tendency than n-butyl alcohol that is why it is taken in tube side Shell Side Fluid n-butyl alcohol certainly engineering-resource.com

    8. Data Available Hot Fluid (n-butyl alcohol) Inlet temperature (T1) = 210 0F Outlet temperature (T2) = 105 0F Mass Flow rate (mh) = 33114 lb/hr Cold Fluid (Water) Inlet temperature (t1) = 95 0F Outlet temperature (t2) = 115 0F engineering-resource.com

    9. Diagram mh = 33114 lb/hr (n-butyl alcohol) 210 0F 105 0F (Water) 115 0F 95 0F

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