tube heat exchanger Articles

  • Design and analysis of concentric tube heat exchanger using entropy generation minimisation

    In a heat exchanger, the amount of heat that is transferred at relatively high temperature is of greater importance than heat balance. This would ensure the conservation of exergy. The entropy generation is the only quantity that quantifies the loss in the exergy. In the present study the entropy generation in concentric tube heat exchanger, and the effect of geometry and working parameters on ...


    By Inderscience Publishers

  • Double Trouble Straight Tube Heat Exchanger

    The Challenge This heat exchanger had a combination of bitumen and coke on the tube side and process steam on the shell side. The client confirmed this type of fouling typically took 8-11 days to clean. Thousand of gallons of water was used to remove this type of fouling with limited success. There was limited water capacity onsite which caused an additional logistical constraint. Over 25% of the ...

  • Introduction to Shell and Plate Heat Exchanger

    Shell and plate heat exchangers are heat exchangers with plate and tube as heat transfer elements, also known as sheet heat exchangers. Shell and plate heat exchangers are mainly composed of tube bundles and shell parts (figure). The contact points of cold-formed pairs of strips are tightly welded ...


    By Accessen

  • Tetrapak, Alfa Laval, Westfalia, Cream separators and Sialex®Ring - Case Study

    Tipperary Co-operative, use Sialex®Ring to help control "Scaling" on Plate Heat and Shell and Tube heat exchangers on their " hot water circuits". A further area suitable to benefit from Sialex® is in the Cream separators. These devices are prone to "Scale" build up on flushing jets. Cleaning requires did-assembly and cleaning. This can occur several times during a year. Platetek ...


    By Phoenix Ring Manufaktur UG

  • The Stubby Bitumen - Twisted Tube Heat Exchanger - Case Study

    The Challenge Twisted tube designed heat exchangers are exceptionally difficult to clean. This particular fouling process is extra challenging due to the steam in the tube side which bakes the bitumen on to the shell side faster than other designs. This heat exchagner was brought to ABSOLUTE after a previous service provider was not successful in their attempt to clean it. When ...

  • Advantages of plate heat exchanger

    1. The heat transfer coefficient of plate heat exchanger is higher than that of other heat exchangers. When designing plate heat exchangers, some special corrugates are designed on the plates. Never underestimate the role of these corrugates. They can make the fluid flow with strong turbulence at very low flow rates. The self-purification effect of turbulence can prevent fouling. The ...


    By Accessen

  • The Straight Test Straight Tube Heat Exchanger - Case Study

    The Client The client is an international integrated energy company with operations in 33 countries and are operating and developing their SAGD Assets in the Athabasca oil sands region. As in all SAGD operations the bitumen is brought to the surface mixed with particulate and water. The exchangers that do the initial cooling of this mixture are regularly fouled by the bitumen and ...

  • Studies on steam condensation with non-condensable gases in a horizontal condenser tube for advanced nuclear reactors using RELAP5

    Horizontal heat exchangers are used in advanced light water nuclear reactors in their passive cooling systems, such as Residual Heat Removal System (RHRS) and Passive Containment Cooling System (PCCS). Horizontal condensation studies of steam with non-condensable gases mixtures in these heat exchangers are very important. This work presents a comparison between simulation results and experimental ...


    By Inderscience Publishers

  • Case Study - Aluto Langano Power Plant Rehabilitation

    Aluto Langano, Ethiopia – 2007 The Aluto Langano Geothermal Pilot Plant (ALGPP) is located on the Aluto volcanic complex of the Ethiopian Rift valley, close to the eastern escarpment between Lake Langano and Lake Ziway, some 200 km southeast of Addis Ababa. The Aluto volcanic complex is a young acidic system consisting of domes, lava, and pyroclastic interbeds. The geothermal field was ...

  • Entropy generation minimisation analysis of cross-flow heat exchangers used in indirect evaporative air conditioners

    In this paper, entropy generation in heat exchangers used in Indirect Evaporative Coolers (IDECs) is studied. First, expressions for the rate of entropy generation in tube-type and plate-type cross-flow heat exchangers used as IDECs are obtained. Then, by introducing appropriate geometric constraints and employing thermohydraulic design equations, the variation of the rate of entropy generation ...


    By Inderscience Publishers

  • The performance and emission characteristics of a diesel engine using preheated Kusum oil and Kusum diesel blend

    Rapidly depleting conventional petroleum resources have prompted research for alternative fuels. Among various possible options for internal combustion engines, fuels derived from triglycerides (vegetable oils/animal fats) are a promising substitute for diesel fuel. Vegetable oils pose some detrimental characteristics like high viscosity and low volatility compared to diesel fuel. In the present ...


    By Inderscience Publishers

  • Concentric Reducer

    Product descriptionWe are concentric reducer supplier, manufactures, and exporters, a type of pipe reducer that fastens pipe sections on the same axis and is conical in shape. The usual forming process is reduction ...

  • Improving Chiller Energy Efficiency Through Automatic Tube Cleaning System Technology

    In this paper, solutions for improving chiller energy efficiency by reducing fouling of shell and tube heat exchangers are discussed. Sponge-ball type automatic tube cleaning system technology is introduced and discussed as a solution for improving chiller energy efficiency and tube cleaning system operating principles are presented.Multiple case studies are provided demonstrating the positive ...


    By Innovas Technologies LLC

  • Best Practices for Eddy Current Testing of Heat Exchanger Tubes

    Eddy current testing (ECT)  is one of the best methods of measuring wall thickness and circumferential cracks when testing heat exchanger tubes. But it takes quality instrumentation to capture defects accurately. Heat exchanger tubes are subject to heavy stress due to high-fluid pressure, including expansions and contractions of the tubes themselves. ECT is one of the most ideal inspection ...


    By Zetec, Inc

  • Experimental investigation of flow-induced vibration in PFBR steam generator sector model

    The 500 MWe Prototype Fast Breeder Reactor (PFBR) is under construction at Kalpakkam. It is a liquid metal sodium-cooled pool-type fast reactor with all primary components located inside a sodium pool. Fission heat is transferred to a secondary sodium system in an intermediate heat exchanger, which is in turn transferred to water in a Steam Generator (SG). The PFBR-SG is a vertical shell and ...


    By Inderscience Publishers

  • Enhancement of heat and exergy transfer inside double pipe heat exchanger with conical tube

    Enhancement of heat and exergy transfers in double pipe exchangers with conical tubes is investigated. Different fluid combinations are selected. The momentum and energy equations for both fluids are solved mathematically and numerically. Both solutions are well matched. A parametric study including the effect of the thermal conductivity, thermal capacity and the tube to pipe diameters ratios is ...


    By Inderscience Publishers

  • The Major Components of Heat Exchangers

    Heat exchangers are not only one of the most common pieces of equipment found on industrial sites, they are also one of the most important. Despite the name, heat exchangers are used for both heating and cooling and are actually used more often for cooling, especially on industrial sites such as refineries or processing plants. These pieces of equipment are not “one size fits all.” In ...


    By STI Group, Inc.

  • Kenics Heat Exchanger Increased Production Capacity in Specialty Chemical Plant

    Increasing production capacity and setting a monthly production record are targeted goals for all manufacturers. To achieve this, all equipment and systems must work in perfect unison and perform to optimal efficiency. The Situation A large specialty chemical manufacturer located in Ohio was experiencing unsatisfactory production levels due to the plant’s old, outdated, ...


    By National Oilwell Varco

  • Are GAS-FIRED Burner Technologies Really The Best Choice for ISTR Cleanups?

    Its an exciting time. In-Situ Thermal Remediation (ISTR) shows great promise and has proven to be an extremely effective method for cleaning a wide range of Contaminants of Concern (COC’s) at contaminated sites. Most recently, gas-fired soil heating technologies are entering the market with promises of much cheaper natural gas heating, faster setup and heating times, less heaters required ...


    By Soil-Therm Equipment, Inc.

  • Improving and maintaining the performance of your Heat Exchanger or Condenser.

    The usage of Heat Exchangers or Condensers is common in many processes across a wide range of industries. The Energy sector is no different, either in the Thermal Power Generation, Upstream and Downstream of the Oil and Gas including Petrochemical and Chemical plants; Heat Exchangers are used to cool of the steam or to pre-heat different liquid needed in the processes. The recurrent problem of ...


    By Ovivo USA LLC

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