Wednesday, February 11, 2009
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Steel picklers have traditionally used carbon block heat exchangers to heat their shallow tank high turbulence pickle baths. The multi-gasketed designs and fragile nature of graphite heat exchangers still require continuous maintenance and repair which results in expensive downtime and spare parts. This has forced the industry to look for alternatives. The use of metal shell and tube heat exchangers virtually eliminates all of the problems associated with carbon block heat exchangers.
As claimed, some of the benefits of metal shell and tube heat exchangers are :
Basic heat transfer equation used to calculate required surface area.
*Tantalum heat exchanger surface area required does not take into consideration using a higher pressure steam.
Interested in detail ? Click HERE
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Source : www.titanmf.com
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- Subscribe FREE - Chemical Processing
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Steel picklers have traditionally used carbon block heat exchangers to heat their shallow tank high turbulence pickle baths. The multi-gasketed designs and fragile nature of graphite heat exchangers still require continuous maintenance and repair which results in expensive downtime and spare parts. This has forced the industry to look for alternatives. The use of metal shell and tube heat exchangers virtually eliminates all of the problems associated with carbon block heat exchangers.
As claimed, some of the benefits of metal shell and tube heat exchangers are :
- Cost competitive with Carbon Block Heat Exchangers
- Easily retrofittable into existing equipment footprint
- Elimination of downtime due to equipment failure
- No spare parts to keep in inventory
- Superior corrosion resistance
- High heat transfer
- High steam pressures to reduce required surface area
- Fully welded metal design eliminates breakage during handling, installation and operation
- Elimination of acid leaks into steam condensate
| Description | Carbon block HEX | Tantalum S&T HEX |
| Heat Input(BTU) | 1,000,000 | 1,000,000 |
| Steam Pressure (PSI) | 75 | 75 |
| Typical Overall U (BTU/hrft2.F) | 250 | 650 |
| Surface Area Required (Sq. Ft.) | 29* | 11.2* |
| Inventory of Spare Parts Required | YES | NO |
| Fully Welded Metal Design | NO | YES |
Basic heat transfer equation used to calculate required surface area.
*Tantalum heat exchanger surface area required does not take into consideration using a higher pressure steam.
Interested in detail ? Click HERE
Download
Source : www.titanmf.com
Related Post
Labels: Heat Exchanger, Shell-and-Tube Heat exchanger
Wednesday, August 8, 2007
- ECI – Operation & Maintenance Engineers - Don't miss FREE articles (>40) related to HX Fouling & Cleaning (Part 2)
- ECI – Operation & Maintenance Engineers - Don't miss FREE articles (>40) related to HX Fouling & Cleaning (Part 1)
- Do Not Overspecified Fouling Factor s for PHE
- Why Lower Fouling in Plate Heat Exchanger ?
- Heat Exchanger Fouling Mechanism, Prevention and Treatment
Fouling factor is generally used in the design to cater for heat exchanger deficiency resulted by fouling. TEMA has based on many years of experiences and experiments list out fouling factor for Shell & Tube Heat Exchanger for many services. Only TEMA subscribers are eligible to use this information. However, there are several reputable researchers & manufacturers have shared this information to the public. Following are the collection of fouling factors for different service.
- Engineering page
- Wolverine Tube
- Delta-T
- BayIndustrial
- GEO-center (Plate Heat Exchanger)
If you know some other site contain similar information, please kindly drop a note to me. I will park it here.
Labels: Fouling, Heat Exchanger, Heat Transfer, Plate Heat Exchanger, Shell-and-Tube Heat exchanger
Monday, June 18, 2007
Today wanna to bring to you a good article (i think) related to Heat Exchanger...
Effectively Design Shell-and Tube Heat Exchanger
This article explains the basics of exchanger thermal design, covering topics such as: Shell and Tube Heat Exchanger (STHE) components; classification of STHEs according to construction and according to service; data needed for thermal design; tube side design; shell side design, including tube layout, baffling, and shell side pressure drop; and mean temperature difference. The basic equations for tube side and shell side heat transfer and pressure drop are well known; here we focus on the application of these correlations for the optimum design of heat exchangers. A follow up article on advanced topics in shell-and-tube heat exchanger design, such as allocation of shell side and tube side fluids, use of multiple shells, over design, and fouling, is scheduled to appear in the next issue.
Effectively Design Shell-and Tube Heat Exchanger
This article explains the basics of exchanger thermal design, covering topics such as: Shell and Tube Heat Exchanger (STHE) components; classification of STHEs according to construction and according to service; data needed for thermal design; tube side design; shell side design, including tube layout, baffling, and shell side pressure drop; and mean temperature difference. The basic equations for tube side and shell side heat transfer and pressure drop are well known; here we focus on the application of these correlations for the optimum design of heat exchangers. A follow up article on advanced topics in shell-and-tube heat exchanger design, such as allocation of shell side and tube side fluids, use of multiple shells, over design, and fouling, is scheduled to appear in the next issue.
If you benefits from this post...buy me some sweets...hehe
Labels: Design, Heat Exchanger, Shell-and-Tube Heat exchanger
