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The project demonstrates a technique to rationalise the thermal/electrical demands in a modern dairy manufacturing plant and reduce the overall energy costs by 10 % through the integration of the handling, storage and processing of milk with an advanced energy system and services. The installation incorporates new process and services valving arrangements, thermal storage and integrated control systems. The design allows up to 30 % of the total daily milk volume to be given a priority route through the processing plant, with automatic identification, to reduce the cooling, heating and recooling requirements. By integrating an ice storage system to the chilled water plant, the site's maximum electrical demand is controlled to a lower level (0.5 to 0.8 MW reduction). The process plant steam suppliers are also controlled and integrated into the system to optimise on the energy centre fuel consumption. Energy savings of 700 toe and 800,000 kWh per annum have been achieved together with a 0.5 MW maximum electrical demand reduction and transfer of 600,000 kWh to the off-peak cheaper rate tariff. The return on investment has been calculated for this particular installation at 4.4 years; however, it is anticipated that for replication purposes a simple payback period of three to four years can be expected.

Additional information

Authors: GOLDEN VALE FOOD PRODUCTS LTD, Golden Vale Food Products Ltd., Charleville (IE);INTEGRATED ENERGY SYSTEMS LTD, Integrated Energy Systems Ltd., Preston (GB)
Bibliographic Reference: EUR 14302 EN (1992) 20 pp., FS, ECU 6
Availability: (2)
ISBN: ISBN 92-826-4545-2
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