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• Flash steam recovery trims gas bill  

  Biomar Grangemouth has cut between 9 and 10% off its annual gas bill with the help of a system to recover energy from flash steam that would otherwise be lost to atmosphere. The aquaculture manufacturer says that the energy savings alone mean that the Flash Recovery Energy Management Equipment (FREME) engineered system from Spirax Sarco has paid for itself around 10 times in the four years since installation.

• Pressurised deaerator system 

  SPIRAX SARCO has launched a pressurised deaerator system that is said to reduce the dissolved oxygen content of boiler feedwater to virtually nil without chemical treatment.

• Cool, clean and dry… 

  Compressed air produced by a compressor is hot, wet and dirty; however compressed air applications require cool, clean and dry air for efficient and reliable performance. Contaminants can be present in compressed air from the outset due to the nature of atmospheric air, but can also enter the system in the form of compressor wear and from the system itself. Effective treatment of the compressed air is therefore vital and only by understanding the various types of contamination which must be reduced or eliminated, can the correct treatment be specified. Peter Fearon of IMI Precision Engineering explains how to plan an efficient compressed air filtering system.

• Accurate boiler blowdown 

  Boiler blowdown is probably one of the most regularly completed, but least understood areas of boiler operation. Blowing down a boiler is necessary to ensure that the boiler can deliver clean, dry steam to the heating system, but getting it wrong can lead to preventable energy losses. Paul Mayoh, technical manager at Spirax Sarco, reports.

• 9 tips for getting the most out of your glycol 

  Brent Hall, technical manager at ICS Cool Energy, offers nine top tips for using glycol in chillers and chilled water systems.