Specs.pdf
PDF 92 KB Posted
- Attached to
- 4420--Replace RO Water Heat Exchanger
- Solicitation number
- 36C25026Q0524
About this file
This document is a heat exchanger specification sheet detailing the design and performance parameters for a shell-and-tube heat exchanger unit.
The heat exchanger is designed to transfer 1,049,499.92 Btu/h between water on both the shell side (106.26 GPM inlet at 140°F, outlet at 120°F) and tube side (60 GPM inlet at 60°F, outlet at 95°F). The unit features an 81.1 square foot surface area with a service overall heat transfer coefficient of 259.5 Btu/hr,ft²,°F and minimal excess surface area of 1.32 percent. The shell side operates at a calculated pressure drop of 1.84 PSIG with a velocity of 5.62 ft/s, while the tube side experiences 0.44 PSIG pressure drop at 2.04 ft/s velocity. Construction specifications include 104 tubes of 316 stainless steel with 3/4-inch diameter, 20 BWG gauge, 48-inch length, arranged in a 15/16-inch triangular pitch. The shell is constructed of steel with a cast SS316 head, 316 S/S tubesheet, and steel baffles. Design parameters specify 150 PSIG pressure rating for the shell side and 125 PSIG for the tube side, with both rated to 375°F design temperature. Inlet and outlet connections are 3.0-inch NPT on the shell side and 4.0-inch NPT on the tube side. The unit meets ASME Section VIII Division 1 standards and carries a U stamp certification. Tube-to-tubesheet joints utilize roller expansion, and composite fiber gasket material is specified.
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Other files
| File | Type | Posted |
|---|---|---|
| 36C25026Q0524.docx | DOCX document | |
| SOW.pdf |
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Text version
Shell Side Tube Side Fluid Name Water Water Total Flow 106.26 GPM 60 GPM Inlet Temperature 140.0 °F 60.0 °F Outlet Temperature 120.0 °F 95.0 °F Operating Pressure 0 PSIG 0 PSIG Pressure Drop, Allow./Calc 6.5 / 1.84 PSIG 6.5 / 0.44 PSIG
Velocity 5.62 ft/s 2.04 ft/s Density 61.51 lb/ft3 62.16 lb/ft3 Viscosity, Mean 0.53 cp 0.95 cp Viscosity, Wall 0.54 cp 0.91 cp Specific Heat 1.0 Btu/lbm,°F 1.0 Btu/lbm,°F Thermal Conductivity 0.37 Btu/ft,h,°F 0.35 Btu/ft,h,°F Specified Fouling Factor 0.000250 hr,ft2,°F/Btu 0.000250 hr,ft2,°F/Btu
Total Heat Exchanged Btu/h 1,049,499.92
LMTD °F 52.14
Overall Heat Transfer Coefficient, Clean/Dirty Btu/hr,ft2,°F 305.1/262.93 Overall Heat Transfer Coefficient, Service Btu/hr,ft2,°F 259.5 Surface Area ft2 81.1 Excess Surface Area % 1.32
Construction
Shell Side Tube Side Number of Passes 1 4 Design Pressure 150PSI 125PSIG Design Temperature 375(°F) 375(°F)
Inlet Connection (Location) Type 3.0 in NPT 4.0 in NPT Outlet Connection (Location) Type 3.0 in NPT 4.0 in NPT
Tube Material / Diameter 316 S/S / 3/4 in No. Tubes / Gauge / Length / Pitch 104 / 20 BWG / 48 / 15/16 TRI Shell Material STEEL Head Type/Material CAST SS316 Tubesheet Material 316 S/S Baffle Material STEEL Gasket Material COMP.FIBER Tube to Tubesheet Joint Roller Expanded Approvals ASME Sect VIII Div 1 w/U stamp.
File details come from the government source that posted it. Updated .