HPC Compressed Air Engineering - 21 Pages

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Catalogue excerpts

Compressed Air Engineering Basic principles, tips and suggestions HPC Compressed Air Systems, Victoria Gardens, Burgess Hill, West Sussex RH15 9RQ Tel: 01444 241671 Fax: 01444 247304 E-Mail: info@hpcplc.co.uk www.hpccompressors.co.uk P-2010HPC.2/08 Specifications are subject to change without notice Further information and tools for correctly planning your compressed air supply system can be found online at: www.kaeser.com> Services> Analysis and Advice

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How much does your compressed air cost? 10 4. Condensate: Correct drainage 12 5. Condensate: Safe, economical treatment 14 6. Efficient compressor control 16 7. Pressure band control: 18 8. Energy savings with heat recovery www.kaeser.com > Services > Analysis and Advice Further information and tools for correctly planning your compressed air supply system can be found online at: 06 2. Efficient compressed air treatment To find out, ask KAESER for an analysis of your compressed air demand (ADA). You'll find more information in chapters 11 to 13, or in our brochure "Analysis and Advice". 20 9....

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How much does your compressed air cost? 10 4. Condensate: Correct drainage 12 5. Condensate: Safe, economical treatment 14 6. Efficient compressor control 16 7. Pressure band control: 18 8. Energy savings with heat recovery www.kaeser.com > Services > Analysis and Advice Further information and tools for correctly planning your compressed air supply system can be found online at: 06 2. Efficient compressed air treatment To find out, ask KAESER for an analysis of your compressed air demand (ADA). You'll find more information in chapters 11 to 13, or in our brochure "Analysis and Advice". 20 9....

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It’s the same with compressed air as with many other things in life: a small cause can have dramatic effect – both in a positive and negative sense. Upon closer inspection things are often different from how they compressed air? at first appear. In unfavourable conditions compressed air can be expensive, but in the right circumstances it is incredibly economical. Our tips are likely to provide better long term results than any clever advice that might be offered by an investment consultant. In this first chapter we will explain the terms used in compressor engineering and the things you should...

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Choose the required grade of treatment according to your field of application: Air treatment using a refrigeration dryer (+3°C pressure dew point) Of course this depends greatly on local ambient conditions. Even in normally contaminated zones the hydrocarbons in the air caused by industry and traffic emissions can lie between 4 and 14 mg/m³. In industrial areas, where oil is used as a lubricating, cooling and processing medium, the mineral oil content can be far in excess of 10 mg/m³. Other impurities such as hydrocarbons, sulphur dioxide, soot, metals and dust are also present. Upon request c)...

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When atmospheric air cools down, as is the case after compression in a compressor, water vapour precipitates as condensate. Under average conditions, 4. Important terms – A brief explanation a) Absolute air humidity Absolute humidity is the water content of the air, given in g/m³. a 30 kW compressor with a free air delivery of 5 m3/min at compressed air? 7.5 bar will "produce" approximately 20 litres of condensate per shift. This condensate has to be removed from the air system in order to prevent potential damage and avoid costly production downtime. Compressed air drying is therefore an important...

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Condensate is an unavoidable by-product of compressed air production. We have already discussed how it is formed in the chapter "Why do we need to dry compressed air" (pg . 8). We explained how, under average Condensate: 4. Correct drainage conditions, a 30 kW compressor with an FAD of 5 m³/min produces 20 litres of condensate per shift. This liquid must be removed from the air system to prevent system failures, costly production downtime and corrosion. In this chapter we explain how to drain condensate correctly and achieve significant cost-savings at the same time. 1. Condensate drainage Condensate,...

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Considerable quantities of condensate occur as a result of compressed air production (see chapters 3 and 4). The term ‘condensate’ is misleading because it 3. Specialist disposal Of course, it is possible to collect the condensate and have it disposed of by a specialised company. However these costs are typically between €40 and €150 per m³. In view of the amount of condensate accumulating, treatment would be the more economical approach. It has the advantage that only about 0.25 % of the original volume is left over to be disposed of in accordance with environmental regulations. could be misunderstood...

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In spite of its many advantages, compressed air is a relatively expensive energy source. This means that costs should be saved wherever possible. In many applications one of the main causes of increased costs 1. Internal control a) Full-load/idle control Most compressors are fitted with threephase asynchronous drive motors. The permissible starting frequency of these drive motors is lower the higher the drive power. It does not correspond to the starting frequency necessary to cut in and cut out compressors with lower switching differentials to meet the actual air demand. These switching cycles...

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Compressed air systems typically comprise multiple compressors of similar or various sizes. As effective control is essential to ensure efficient system operation, a master controller is needed to coordinate the opera- controlled sequencer or, better still, an industrial computer with controller intelligence. There are several methods of pressure band control, as explained below. Pressure band control: Optimised compressor performance to meet actual demand tion of individual machines. This task used to be relatively simple, as it usually involved sequencing compressors of the same size to handle...

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In view of continuously soaring energy prices, efficient use of energy is not only important for the environment, but is also increasingly becoming an economic necessity. Compressor manufacturers to Industrial water circulation Plate heat exchanger Cooling oil circulation in the compressor with heat recovery 4. Considerations of reliability Normally, the compressor's primary cooling system should never be used both for cooling and as a heat recovery system. The reason: should the heat recovery system fail then compressor cooling and therefore the production of compressed air would be endangered....

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