Heat exchangers

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Efficient and reliable Heat Exchangers are the key components for achieving excellent and stable performances in paper machines’ ventilation. This objective of optimal result and reliability is at the core ofMDS products’ engineering and development which focus on:

  • Flash & condensates energy flows available from steam system at variable charges
  • Cleanliness of air passing through exchangers (filters)
  • Minimal pressure drops on both primary & secondary circuits
  • Acceptable air velocity range, neither too low (exchange insufficient) nor too fast (vibrations, breaks, etc)
  • Accessibility to coils for inspection, cleaning, repair without dismantling/removal on installation
  • Corrosion-resistant materials, specially for condensate exchangers
  • Heavy-duty construction resistant to steam shocks and vibrations
  • Stability of performances under variable working conditions
  • Easy-to-clean (particularly Air-Air or Air-Water tubular exchangers as well as direct “scrubber” models)

 

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Set of Air-Air & Air-Water HR exchangers
 IR fumes Air-Air & Air-Water HR exchangers

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Air-Air & Air-Water HR exchangers Double Air-Air HR exchangers

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Special features

  • High-pitch fin tubes for polluted air or recycling circuits (i.e. Air Dryers, Air Tunnels, Yankee hoods, Aircaps…)
  • Square fins for air-water exchangers
  • Intermediate chambers for access and cleaning
  • Customized exchangers to replace existing ones with specific dimensions
  • Single or multi-pass air-air exchangers (direct or counter flow)
  • Water-spraying cleaning system for air-air exchangers
  • Flushing circuit for air-water exchangers (heat transfer booster)
  • Scrubbers, heating up white/grey water by direct air-to-water contact , single or double circuit
  • Special Heat Recovery Exchangers for oven exhausts, boilers chimneys, IR dryers, Yankee hoods…
  • Survey, engineering, supply, automation, instrumentation, setup, start-up & services dedicated to Heat Recovery projects (turnkey or supply)

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Technical solutions

Capitalizing on more than 50 years of know-how and experience, MDS offers to its customers a comprehensive range of services, from the simple study to extended intervention, which can include survey, technical advises, supply, assistance and any other more specific missions for safer results at the best value for money.
On the product side, MDS exchangers have been engineered to cover many fields of application and to serve various types of manufacturing chains wherever heating or drying processes are involved, such as:

  • Paper & board (for all kinds of products and capacities worldwide)
  • Nonwoven products
  • Tissue paper
  • Wood pellets process
  • Tobacco
  • Food transformation
  • Plastic films
  • Textile, synthetic and glass fibers
  • Filters
  • Steel production
  • Automotive industry
  • Construction materialsAluminum nozzles for MG hoods up to 200°C (maximal permanent service temperature 300°C)

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