Efficient utilisation of electric machine drives in the industry of Cyprus

Τίτλος

Efficient utilisation of electric machine drives in the industry of Cyprus

Θέμα

Electric machinery

Electric driving

Electric power consumption

Δημιουργός

Efstathios, Michael

Πηγή

Higher Technical Institute

Το πλήρες κείμενο είναι διαθέσιμο από το Υπουργείο Ενέργειας, Εμπορίου Βιομηχανίας και Τουρισμού

Εκδότης

Library of Cyprus University of Technology

Ημερομηνία

1986

Δικαιώματα

Απαγορεύεται η δημοσίευση ή αναπαραγωγή, ηλεκτρονική ή άλλη χωρίς τη γραπτή συγκατάθεση του δημιουργού και κάτοχου των πνευματικών δικαιωμάτων.

Μορφή

pdf

Γλώσσα

en

Τύπος

text

Αναγνωριστικό

EED0014

Σύνοψη

In consideration of the characteristics of the Industrial sector of a small and developing economy a study is presented which reveals the state of utilisation of electric machine drives in the industry of Cyprus and examines the possible technological and financial effects from the penetration of specific electricity conservation measures.
Through an analysis of the electricity consumption records and the kVA capacity of the electricity consuming apparatus the state of utilisation of electricity is described levels as well as by the form of end in sectoral and subsectoral use. Thus it was found that 88% of the electrical equipment in use in the Industrial sector are AC machine drives. The subsequent field investigations have described the loading conditions of these motors which indicate an average loading of 51.7%, an overall efficiency 'of 85% and 11.9 average daily hours of operation.
Four specific energy conservation measures which are likely to be adopted locally are thoroughly discussed through a technological and financial appraisal. The provision of a benefit/cost ratio enables the comparison of the four measures and makes possible the identification of the most economical measure for adoption.
The impact from the penetration of these measures in the Industrial sector and the dominant industrial subsectors are examined taking into account where necessary the risks involved from the electricity price variations and the annual hours of operation. It was generally found that the Power Factor Controller method is rarely financially viable whereas the Energy Efficient motor can be considered as the standard type of drive for certain applications such as compressors and the Reduced Voltage approach and proper sizing of motors produce high rates of return in situations where serious underloading exists.