Monitoring as a secure basis for energy efficiency measures

Peter Sattler, Kurt Krautgartner, and Claus Weberstorfer, sattler energie consulting GmbH

Keywords

energy efficiency measures, industry, realisation of savings, visualisation of losses, measurement, multi channel load analysis, evaluation of measures, energy services

Abstract

Today's energy efficiency programs for industry offer opportunities to save a lot of money in the field of energy consumption. Practice, however, shows that results and realized savings in many cases are rather poor.

Successful realisations of energy saving measures in most cases are made whenever energy consumption, losses or waste of energy is visible for the decision makers. So a detailed analysis of the companies' energy situation with various measurement systems and visualisation of results is the basis for appropriate activities.

The paper shows a lot of convincing and surprising results, that can be obtained with different technologies of monitoring in various fields of energy technologies and that directly lead to savings and optimizations:

Multi-channel load monitoring in electrical systems leads to exact power and energy statistics of the company, the results permit a precise cost center and cost unit calculation. Apart from control engineering problems (e.g. compressor control), time constants of thermal consumers, which are not assessed correctly in most cases, can be recognised. Monitoring of thermal power for example shows problems with hydraulic systems or visualizes losses caused by polluted heat exchangers.

Additional measurement of temperatures and other services provided by energy in the system (light, compressed air,...) allows a detailed evaluation of energy and the efficiency of the system in different operating conditions.

Additional to this, consequent monitoring allows to evaluate the results of well aimed measures and to optimize different parameters after changes in the system.