Des Murphy

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Energy MAP Step 18
Establish a Measuring and Monitoring System

• Des Murphy
• Kovara Energy Consultants

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Why Monitor Energy

• Allows you to identify drifts in efficiency due
  to poor maintenance or operation
• Analysis of data often turns up new ideas for
  energy saving.
• It allows you to predict the savings to be
  expected from energy saving investments and
  actions.
• It gives you control of energy utilisation.

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Links to energy MAP
Proof of success needed to maintain commitment
Commit
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Elements of Step 18

• Record
• Normalise
• Analyse
• Target
• Monitor
• Report
• Control

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Record What plant to record?
Efficiency Slip Potential

• Consumption x Slippage Potential

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Record What to measure
Consumption / Yield meters
Process
Condition Indicators
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Record What to measure
Consumption / Yield meters
Example Air Compressors

• Meter Electricity
• Flow meter on compressed air

Process
Condition Indicators

• Air off temperature
• Filter pressure loss
• Loaded and Unloaded hours

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Record What to measure
Consumption / Yield meters
Example Chiller

• Meter Electricity
• Heat meter on chilled water

Process
Condition Indicators

• Condensing temp ambient temp
• Evaporator tem

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Record What to measure
Consumption / Yield meters
Example Process CA

• Process compressed air flow meter
• Record production

Process
Condition Indicators

• Identify the easily measurable factors that
  determine compressed air usage

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Record How to Measure
Testers
Meters / Sensors
Data Collection

• Automatic Data Collection
• Data loggers
• Manual

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Record How to Measure

• Digital thermometer
• Combustion analyser
• Light meter
• Manometer
• Clip-on ammeter
• Velocity meter

Testers
Meters / Sensors
Data Collection

• Automatic Data Collection
• Data loggers
• Manual

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Record How to Measure
Testers

• Air flow meter (1,900)
• Steam meter (2,500)
• Electricity meter (300)

Meters / Sensors
Data Collection

• Automatic Data Collection
• Data loggers
• Manual

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Record How to Measure
Testers
Meters / Sensors
Data Collection

• Automatic Data Collection
• Data loggers
• Manual

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Analyse How?
The core of energy monitoring is to derive a
formula which gives the energy which should have
been used for the period and compare the actual
to this.
Analyse

• First Principles approach

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Analyse Regression
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Normalise Secondary Drivers
The concept of Secondary Drivers
Examples

• Air compressor (load pattern)
• Chiller (ambient temp, evaporating temp)
• Process (product weight, raw material, etc

Normalisation factors usually come from the
First Principles analysis
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Target On what basis?
Recap Each week compare ACTUAL with TARGET
How to establish the Target

• First principles, manufacturers data
• Regression analysis
• Industry benchmarks

Use All Three

• The First Principle gives you a good
  understanding of the process from which new ideas
  are born
• Regression is based on real data (credible)
• Benchmarks are important management information

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Monitor What it means
1
Each period check actual consumptions against
targets
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Monitor How often?
How often should you collect the data and analyse
it?
Examples
Heating system Monthly Chillers Monthly Air
Compressors Monthly Process Depends on the
potential for efficiency slippage and its cost
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Report How detailed?
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Control Follow up
From the report generate tasks/actions and
formally ensure closure. Why did it happen? What
procedures are being put in place to ensure that
it does not happen again?
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Software How can it help?
Data Collection Automatic, semi-automatic,
manual Data Analysis Regression, Targets,
Deviation Reporting Generate report Control Contro
l actions/tasks
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Data Loggers
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Data Loggers - Dent
Time-Of-Use (TOU) SmartLoggers are small,
battery powered activity data loggers. They store
events like on/off transitions of lighting,
motors and other electrical devices. They record
and time stamp the actual time equipment turns on
and off. The on/off transition times are stored
in the data logger and the data are retrieved
using the TOU SmartWare software.
http//www.dentinstruments.com
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Data Logger Log-Tag

• Logtag Data Recorders
• Loggers use a convenient docking station
• Ideal for cold chain applications
• http//www.logtagrecorders.com/index.html

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Temp Logger - HOBO

• HOBO Temp
• Basic Hobo single channel temperature data logger
  
• 8 bit resolution, 8k memory
• Reliable, affordable data logger performance
• http//www.microdaq.com/

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Temp Logger MicroLo

• MicroLog Temp with External Sensor Data Logger
• 2 channels Internal temperature and external
  input
• Sensors available for external input channel
  temperature, pH, 0-10V, 0-20mA and contact
  adapter
• Weatherproof and dust proof
• LCD display for convenient viewing while logging
• Options for wireless communications
•   

http//www.microdaq.com/fourier/microlog/temperatu
re-humidity.php
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Multi-Purpose LogBox

• Two channels
• Each channel accepts sensors directly and
  standard input signals
• 0.5 sec 30 day logging interval
• Average up to 250 reading for each recording
• Current transducer selectable 20, 100 , 150 amps
• Wireless download

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End
Thank you Des Murphy Kovara Energy
Consultants dm_at_kovara.com 045 522866 087
6006829