THEORY EXAMINATION (SEM–VIII) 2016-17 ENERGY MANAGEMENT

SECTION – A

Explain the following (Short Answer Type)

Energy index is a measure used to evaluate energy consumption per unit of output, helping assess energy efficiency in industries.

A regenerator is a heat recovery device that stores heat from exhaust gases and transfers it to incoming air or fuel to improve efficiency.

Energy security refers to the availability of reliable and affordable energy sources to meet a nation’s needs.

Renewable energy comes from natural sources like solar and wind, while non-renewable energy comes from limited resources such as coal and petroleum.

BEE (Bureau of Energy Efficiency) is an Indian government organization that promotes energy efficiency and conservation.

An energy management center helps monitor, control, and optimize energy usage in industries or buildings.

Computer-aided energy management uses computer systems to analyze energy consumption and improve efficiency.

Energy refers to the ability to do work, while exergy represents the useful portion of energy that can be converted into work.

Energy audits are systematic inspections to identify energy losses and suggest efficiency improvements.

The national energy plan focuses on energy conservation, renewable energy development, and efficient energy utilization.

Questions (Section A)

What is energy index?

What is a regenerator?

Define energy security.

What is BEE?

What is an energy audit?

SECTION – B

Attempt any five (Long Answer Type)

An energy audit evaluates energy consumption patterns and identifies opportunities to reduce energy waste. Types include preliminary audit, detailed audit, and investment-grade audit.

Energy Conservation Opportunities (ECOs) are methods to improve energy efficiency, such as optimizing processes and using efficient equipment.

Energy conservation in thermal power plants includes improving boiler efficiency, reducing transmission losses, and recovering waste heat.

Energy-efficient motors consume less power while maintaining performance. Power factor affects energy consumption by influencing reactive power losses.

Carbon monoxide (CO) and sulfur oxides (SOx) emissions harm human health and the environment. Control methods include using cleaner fuels and emission control technologies.

High-grade energy is energy that can be fully converted into work, such as electricity, while heat is considered low-grade energy due to conversion limitations.

Life cycle costing evaluates the total cost of equipment over its lifetime. Demand-side energy management focuses on reducing energy consumption at the consumer level.

Thermal energy storage stores heat energy for later use, while transmission losses occur due to resistance in electrical lines.

Questions (Section B)

What is an energy audit?

Explain energy conservation opportunities.

What is energy-efficient motor?

What are effects of CO and SOx emissions?

What is life cycle costing?

SECTION – C

Attempt any two (Detailed Explanation)

Regulated emissions are controlled by environmental laws, while non-regulated emissions are not strictly controlled. Air quality standards are developed to limit pollution levels.

Green buildings are designed to reduce energy consumption and environmental impact. Energy conservation in air conditioning includes efficient equipment and proper insulation.

Computer-aided energy management uses automated systems to monitor and optimize energy usage, leading to better conservation and cost savings.

Questions (Section C)

What are regulated emissions?

What are green buildings?

Explain computer-aided energy management.