Focus on: Compressed Air Process, Controls & Plant Annual Buyers’ Guide 2024 www.pwemag.co.uk Plant & Works Engineering | 25 Option 2 A data logging system will also help to determine the yearly cost of the compressor system. This needs to be installed for a period of at least seven days. With this system in place, the pattern of demand can be established, otherwise known as a demand profile, and the off-load running time when there is no demand for air. This does not account for the ‘off-load’ power consumption when the compressor is consuming energy without generating air. Option 3 And finally, option three allows plant engineers to calculate the annual cost of the system by estimating the energy consumption of each air compressor. The following working example provides a useful guide: a 75kW compressor operates at 7 bar. It is on load for 80 per cent of the production time, which is 2,000 hours per year. Energy consumption of the compressor = 75 x 0.8 x 2,000 = 120,000 kWh/year. If electricity costs £0.1249/kWh, the annual energy cost is £14,988. Should production time increase to 6000 hours per year, for example, then the annual energy cost would rise to £44,964. With a range of options available to monitor the annual cost of the air compressor system, it is also important to ensure that alternatives are compared based on ‘whole life’ cost, not just the initial capital outlay. By opting for equipment that is a higher cost but is more efficient, sites could benefit from both lower running costs and total cost of ownership in the long term. For more information, please visit: www.bcas.org.uk Name: Company Name: Address: Post Code: Tel: Total Number of Copies @ £ p+p Total £ Drives S & S Hyd H/B Pne H/B Ind Mot Comp H/B H/B Air QUANTITY QUANTITY Hydraulics & Pneumatics There are now 6 of these handy reference books from the publishers of the Drives & Controls and Hydraulics & Pneumatics magazines. Published in an easily readable style and designed to help answer basic questions and everyday problems without the need to refer to weighty textbooks. We believe you’ll find them invaluable items to have within arms reach. From the publishers of QUANTITY QUANTITY QUANTITY 2-5 copies £4.30, 6-20 copies £4.10, 20+ copies £3.75. QUANTITY PRACTICAL ENGINEER’S HANDBOOKS HYDRAULICS INDUSTRIAL MOTORS SERVOS AND STEPPERS PNEUMATICS COMPRESSED AIR INDUSTRIAL ELECTRIC DRIVES PLEASE ALLOW UPTO 28 DAYS FOR DELIVERY $&! -!.5&!#452).' -%$)! ,4$ 4HE (IGH 3TREET 4ONBRIDGE +ENT 4. "% Postage and Packaging: 1-3 copies: £2.99 4-6 copies: £4.99 7 or more copies: £6.99 If you would like to obtain additional copies of the handbooks, please email info@dfamedia.co.uk or call us on 01732 370340. Alternatively you can return the completed form below to: Engineers Handbook, DFA MANUFACTURING MEDIA LTD, 192 The High Street, Tonbridge, Kent TN9 1BE #HEQUES SHOULD BE MADE PAYABLE TO $&! -ANUFACTURING -EDIA ,TD AND CROSSED ! # 0AYEE #OPIES OF THE HANDBOOKS ARE AVAILABLE AT a PER COPY $ISCOUNTS ARE AVAILABLE FOR MULTIPLE COPIES
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