UNIT IV
Energy Audit
Contents
1. objective of energy management
2. Need and scope of energy audit
3. Methodology
4. Types of energy audit
5. Material and energy balance
6. Energy auditing instruments
7. Maintenance and audit
,1. Objective of energy management:
To minimize the energy costs/waste without affecting production and quality
To minimize environmental effects
To optimize utilization and procurement of energy
2. Need and scope of energy audit:
2.1 Need energy audit:
To understand which type of fuel/energy is being used in particular
process/products.
In identifying the quantity and cost of various energy forms.
In identifying the energy consumption at various levels.
In highlighting wastage by relating energy input and production output.
2.2 Scope of energy audit:
Monitoring energy consumption
Considering possibility of savings
Recommending appropriate policies for bringing down energy consumption
Possibility of avoiding losses
Detailed analysis of present consumption and past trends
Reviewing lighting requirements
Check capacities and efficiencies of equipments
Check working of controls like fire alarms etc
Compare standard consumption to actual
Need for publicity campaigns
Examine need of automatic controls
, 3. Methodology:
The methodology employed in energy audit is:
Conducting a survey if energy use and conservation study to identify scope and
possible areas of conservation
Work out techno economic feasibility in the use of alternative sources of energy
Step1: Interview with key facility personnel
Step2: Facility tour
Step3: Document review
Step4: Facility inspection
Step5: Staff interview
Step6: Utility analysis
Step7: Identify/Evaluate feasible ECMs
Step8: Economic analysis
Step9: Prepare report summarizing audit finding
4. Types of energy audit:
The factors on which energy audit depends on are as follows:
Type of industry.
Type of fuel/ energy being used.
Depth to which final audit is needed.
Different functionalities and process performed in industry.
Investment and time availability.
Potential and magnitude of cost reduction required.
The energy auditing process can be classified to different forms depending on the depth and
intensity of audit required, based on the demands of different sectors in which auditing is done.
In general auditing process is done to check some parameters like amount of energy
consumption, energy utilization, wastage, qualitative and quantitative measure of products
produced, and its contribution to economic development. Few different types are mentioned
below:
Energy Audit
Contents
1. objective of energy management
2. Need and scope of energy audit
3. Methodology
4. Types of energy audit
5. Material and energy balance
6. Energy auditing instruments
7. Maintenance and audit
,1. Objective of energy management:
To minimize the energy costs/waste without affecting production and quality
To minimize environmental effects
To optimize utilization and procurement of energy
2. Need and scope of energy audit:
2.1 Need energy audit:
To understand which type of fuel/energy is being used in particular
process/products.
In identifying the quantity and cost of various energy forms.
In identifying the energy consumption at various levels.
In highlighting wastage by relating energy input and production output.
2.2 Scope of energy audit:
Monitoring energy consumption
Considering possibility of savings
Recommending appropriate policies for bringing down energy consumption
Possibility of avoiding losses
Detailed analysis of present consumption and past trends
Reviewing lighting requirements
Check capacities and efficiencies of equipments
Check working of controls like fire alarms etc
Compare standard consumption to actual
Need for publicity campaigns
Examine need of automatic controls
, 3. Methodology:
The methodology employed in energy audit is:
Conducting a survey if energy use and conservation study to identify scope and
possible areas of conservation
Work out techno economic feasibility in the use of alternative sources of energy
Step1: Interview with key facility personnel
Step2: Facility tour
Step3: Document review
Step4: Facility inspection
Step5: Staff interview
Step6: Utility analysis
Step7: Identify/Evaluate feasible ECMs
Step8: Economic analysis
Step9: Prepare report summarizing audit finding
4. Types of energy audit:
The factors on which energy audit depends on are as follows:
Type of industry.
Type of fuel/ energy being used.
Depth to which final audit is needed.
Different functionalities and process performed in industry.
Investment and time availability.
Potential and magnitude of cost reduction required.
The energy auditing process can be classified to different forms depending on the depth and
intensity of audit required, based on the demands of different sectors in which auditing is done.
In general auditing process is done to check some parameters like amount of energy
consumption, energy utilization, wastage, qualitative and quantitative measure of products
produced, and its contribution to economic development. Few different types are mentioned
below:
