Heat Exchanger Articles

  • 316L vs. 439 Stainless Steel for use in Condensing Boilers

    There are many choices available when it comes to heat exchanger material in a condensing boiler. In today’s current offering of commercial condensing boilers, you can find copper, carbon steel, 304 stainless, 316L stainless, 439 stainless, duplex steel alloys, and aluminum. A boiler manufacturer evaluates a number of different factors when selecting their material for the heat exchanger. ...


    By Gasmaster Industries Ltd.

  • 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

  • Improving Output and Quality with Better Maintenance

    In the competitive industrial industrial landscape, companies are always striving to increase the quality and output of their products. As a result much attention is often given to refining processes, upgrading equipment, or improving management and planning. While these are certainly all effective, important factors to consider, another invaluable tool for increasing output and quality is better ...


    By STI Group, 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 ...

  • 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 ...

  • 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.

  • Perfected, stable and elegant: Our VACUDEST

    Interview with Daniel Ladenberger, Head of Engineering. Mr Ladenberger, you are highly valued at H2O not only as an experienced technical director, but also as a walking encyclopaedia of sorts. How long have you been with H2O? I’ve been with H2O since the very beginning. I worked at Mannesmann Demag Wittig for two years before Matthias Fickenscher and ...


    By H2O GmbH

  • Case study - Air-to-water heat exchanger reduces operating costs by $120,000 per year

    OVERVIEW This pharmaceutical company had a 5,000 SCFM oxidizer that they were looking to relocate to another facility across the United States.  The destruction rate efficiency and heat recovery expectation at the new location differed from the original design conditions at the current facility. ACTION An Anguil field service engineer went to ...

  • Case study - Air-to-air heat exchanger provides plant heat and big savings

    OVERVIEW A food processing facility installed a new Regenerative Thermal Oxidizer (RTO) for odor control from its roasting operation.  The oxidizer was designed for 95% thermal rate of efficiency and included supplemental fuel injection (SFI) which is used during low VOC loading conditions, to help save fuel cost.  The customer was looking at additional ways  to further ...

  • Monitoring leaks in Heat exchangers - Case study

    The Situation A California refinery produces xylene for use as commercial product and a precursor for petrochemical manufacturing. A primary component to the production of xylene is the isolation and purification of the chemical from a complex mixture of petroleum hydrocarbons. Steam based heat exchangers are used to process the xylene. Inherent to the design and rough duty heat ...

  • Highlight Molds Manufacturing

    The highlight moulds means both more machining work and more technical difficulty.It require better machines and skilled workers.In principle, the thinner the highlight shell, the better heat transfer efficiency, and thus the easier to acquire a better weldless plastic part. But on the other hand, it may lead to deformation, losing its dimensional ...


    By Focare Mould Co.,Ltd.

  • 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

  • Implementation of a transient exergy analysis for a plate–fin heat exchanger

    A 2nd law thermodynamic analysis with exergy analysis can provide a more robust means of accounting for all of the energy flows within and in between subsystems and the work potential. These energy flows may be thermal, chemical, electrical, pneumatic, etc. Some systems such as air or ground vehicles have very transient modes of operation. Energy optimisation of these vehicles through modelling ...


    By Inderscience Publishers

  • Combined energy and exergy analysis of a corrugated plate heat exchanger and experimental investigation

    This paper presents an experimental investigation on combined energetic and exergetic performance characteristics of a corrugated plate heat exchanger using water. On the basis of experimental data considering heat exchange with ambient, various energetic and exergetic performance parameters have been evaluated and discussed their interrelationship. General relationship between energy ...


    By Inderscience Publishers

  • 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

  • Vivianite Heat Exchanger removal trial case study

    On the vivianite-laden heat exchangers, the maintenance supervisor created a recirculation circuit and diluted JS 9325 to a fifty percent (50%) solution. They recirculated the diluted solution for 48 hours while raising the temperature of the solution to 110F. Upon opening the first heat exchanger, they observed a purple solution following by a half-inch (½”) sheet of vivianite scales popping off ...

  • Oil refinery vapour gas case study

    1.0 Evaluation of Refinery Gases Various refinery gases are generated in the process of oil refining. These vary, depending upon the type of crude oil being distilled, such as Reduced Crude distillation, or Naphtha cracker. For the purposes of this case study the description and range of refinery gases are those gases produced from refining Crude Oil and Reduced Crude only. Crude ...

  • RELAP5–3D transient modelling for NGNP integrated plant

    The High–Temperature Gas–cooled Reactor (HTGR) is designed with outlet temperatures ranging between 750°C and 800°C. These high outlet temperatures enhance the power production efficiency and facilitate a variety of industrial applications. The objective of this study is to understand the response of the primary system to potential transients in the secondary system. For this analysis, the ...


    By Inderscience Publishers

  • LIAOYANG PETROCHEMICAL COMPANY REDUCES SCALE IN HEAT EXCHANGERS WITH SCALEWATCHER

    Liaoyang Petroleum’s Olefin Factory in the Hongwei District of mainland China, producing MEG and polypropylene, is saving $65,000 a year in maintenance following the installation of the award winning Scalewatcher computerized, electronic water conditioner from Scalewatcher North America.  Since the Scalewatcher units were installed onto three heat exchangers in ...

  • District Cooling Project – NUON Energy

    District Cooling Project – NUON Energy District cooling Zuidoost Lob Amsterdam Nuon, part of Vattenfall, is a leading energy company that generates electricity and produces gas, heating and cooling, which is supplies to approximately 2.2 million households, companies and organizations in the Netherlands. In 2009 DESMI supplied energy efficient pumps to Nuon for a ...


    By DESMI A/S

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