Application Spotlight: Batch Process Water Heating
Thermal Products Inc was asked to design a Shell & Tube Heat Exchanger within a certain footprint as it needed to fit within our customer’s packaged heating system. We offered to design and build an all 316 Stainless Steel Shell & Tube Heat Exchanger, but our customer requested 304 Stainless Steel Shell & Tube Heat Exchanger instead. Our customer also requested the tube side connections of our shell & tube heat exchanger to be Tri Clamp connections for ease of cleaning the heat exchanger.
The design parameters for the project were to heat 300 gallons of process water from 60 degrees Celsius to 80 degrees Celsius in 15 minutes or less. Our customer’s control package needed to maintain tight temperature control with a +/- .5 degrees Celsius discharge temperature variance for their exacting process downstream. The circulating process water flow rate for each batch will be 120 gallons per minute (GPM)
The 304 Stainless Steel Shell & Tube Heat Exchanger was designed to be a 08024, Type BEU with 304 stainless steel tubes and a 2-pass tube side design. The thermal duty was achieved using 387 lb/hr of steam and was built to ASME Code Section 8, division 1 and TEMA C.
Thermal Products sales and design engineers can design a fully customized heat exchanger to your exacting specifications or an "off the shelf" design for quick shipment and installation. Thermal Products can supply the heat exchanger alone or integrate it into a skidded package with controls, valves and pump(s) on a skid enabling a more "plug and play" design, significantly reducing our customers installation costs.
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The use of a low finned tube within a shell and tube exchanger is an excellent solution for increasing efficiencies in the cooling or heating of gases and liquids. When space on your lube oil console or fuel conditioning skid is at a premium, see how Thermal Products can offer a smaller shell and tube exchanger design, using low finned tubes reducing the heat exchanger overall footprint and offering considerable potential to save in terms of materials and heat exchanger fill volumes.
The wide range of dimensions offered by Thermal Products Inc makes these products perfect for a broad scope of applications for oil/gas coolers in consoles, machinery and plant processes.
Low finned tubes increase that outside surface area. By having a finned tube in place, it increases the overall heat transfer rate. This then decreases the total number of tubes required for a given application which then also reduces overall equipment size and can in the long-run decrease the cost of the project.
Applications Thermal Products has designed low finned tubes within our shell and tube exchangers.
Benefits of Low Finned Tubes:
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Thermal Products was asked to replace “In Kind” an older all 316L stainless steel Type BEM with vertical installation at a local food additives company. The existing unit was an 26” x 120” BEMV 316L/304L with 16 passes on the tube side.
Thermal Products was asked to provide an updated performance data sheet, ASME Code Calculations and engineering drawing. When the ASME Code Calculations were completed it was realized that the ASME Code requirements now required an expansion joint to be employed on the shell side. Because this was a “Drop in Replacement” project, meaning all pertinent dimensions needed to be held from the existing to the new installation, the addition of an expansion joint created a small challenge for us to maintain the critical dimensions. The Thermal Products team was not only able to incorporate the expansion joint while meeting ASME code requirements but also our customer need to maintain thermal performance and dimensional requirements.
The construction of the sanitary heat exchanger was as follows:
• 316L stainless steel tubes, tube sheets and heads
• 304L stainless steel balance
• Product surfaces were polished to 32u-inch Ra finish
• Exterior was polished to 40 Ra finish
• Tri-clamp product connection
• Hinged head cover for easy access to tube side for cleaning
• Garlock Gylon 3522 gaskets for food use
• Support legs for vertical installation
• Insulation jacket for outer shell
• Designed to TEMA C guidelines
• ASME Code Stamped
Thermal Products was also asked to provide the equipment dossier that included the following documents:
• Final Arrangement Drawing
• Design specification sheet
• ASME Code data report
• Weld Procedures (WPS, PQR, and WPQ)
• Weld log
• Welder qualification records
• Q350 R4 Visual Weld inspection
• Passivation certification
• Surface finish certification
• ElectroPolish certification
• Material Test Reports (MTR’s)
• Gasket certificate
• Insulation safety data sheet
• Hydro Test Certification
• ASME Code Calculations
• Unit ID plate
Whether your application is new or replacement, the Thermal Products team stands ready to assist you with your heat exchanger design from start to finish.
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Please contact us today to discuss your project!