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Chapter 1.8 - Energy Monitoring and Targeting

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8. Energy Monitoring and Targeting 8. ENERGY MONITORING AND TARGETING Syllabus Energy Monitoring and Targeting: Defining monitoring & targeting, Elements of monitoring & targeting, Data and information-analysis, Techniques -energy consumption, Production, Cumulative sum of differences (CUSUM). 8.1 Definition Energy monitoring and targeting is primarily a management technique that uses energy information as a basis to eliminate waste, reduce and control current level of energy use and improve the existing operating procedures. It builds on the principle you can t manage what you don t measure . It essentially combines the principles of energy use and statistics. While, monitoring is essentially aimed at establishing the existing pattern of energy consumption, targeting is the identification of energy consumption level which is desirable as a management goal to work towards energy conservation. Monitoring and Targeting is a management technique in which all plant and building utilities such as fuel, steam, refrigeration, compressed air, water, effluent, and electricity are managed as controllable resources in the same way that raw materials, finished product inventory, building occupancy, personnel and capital are managed. It involves a systematic, disciplined division of the facility into Energy Cost Centers. The utilities used in each centre are closely monitored, and the energy used is compared with production volume or any other suitable measure of operation. Once this information is available on a regular basis, targets can be set, variances can be spotted and interpreted, and remedial actions can be taken and implemented. The Monitoring and Targeting programs have been so effective that they show typical reductions in annual energy costs in various industrial sectors between 5 and 20%. 8.2 Elements of Monitoring & Targeting System The essential elements of M&T system are: Recording -Measuring and recording energy consumption Analysing -Correlating energy consumption to a measured output, such as production quantity Comparing -Comparing energy consumption to an appropriate standard or benchmark Setting Targets -Setting targets to reduce or control energy consumption Monitoring -Comparing energy consumption to the set target on a regular basis Reporting -Reporting the results including any variances from the targets which have been set Controlling -Implementing management measures to correct any variances, which may have occurred. Bureau of Energy Efficiency 172

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