Question

Why it is important to study the cost implications of any energy saving measures in industry? What are the ways and means by which it is carried out?

Answer 1

IMPORTANCE OF ENERGY SAVINGS IN INDUSTRY

1. Energy in Industry

The industry is the major user of energy in modern society, accounting for roughly 40% of final energy use. Coal or oil are heavily used, especially by primary industry and manufacturing and refining. Gas is being used increasingly to replace coal because it is a cleaner fuel producing less impact on the environment. Electricity is only a minor component of industrial energy use although its use in driving electric motors is very important.

Some major sectors as follows where the use of energy describes:

Manufacturing: this includes the processing of primary resources into consumer products. Mineral
refining, oil refining, and chemical manufacturing are some areas of energy use where considerable
savings could be made. Such activities often occur in the industrial zones of major cities.

Power Generation - the power generation industry is a massive user of fossil fuels and accounts for
more than 50% of international greenhouse gas emissions. Many power stations are very inefficient and there are strong economic and environmental incentives to save energy in the power supply industry.

Mining – this is a primary industry which generally occurs outside cities, often in remote parts of the
country. Energy intensity is high in most mining operations but there is an incentive to save energy
because energy wastage is reflected in the cost of the minerals.

Agriculture – another major user of primary energy which takes place in rural areas and is largely
beyond the scope of city governments to influence it.

Construction – is a modest user of energy, particularly liquid fuels because this activity often takes
place at sites where electric power is not readily available. Considerable savings are available in this
sector because there is often a large amount of wastage in construction activities

2. Energy Auditing in Industry

The greatest potential for savings in the industrial sector will usually revolve around the selection, operation, and maintenance of efficient equipment in the process.

1. Planning for Energy Efficiency in Industrial Processes
Once an initial energy audit has been undertaken, it will provide an important first step in monitoring and achieving the progress towards energy efficiency goals. This information is the baseline energy
consumption or the energy usage associated with current practices in the factory as well as existing
equipment. Known as T0, this is the energy consumption prior to any systematic energy efficiency
measures being undertaken.it can be possible through the implementation of energy efficient technologies

1.Short-Term Energy Efficiency Targets 2.Long Term Energy Efficiency Targets

3.Strategies for Energy Savings in Industry
The strategies for achieving energy savings in the industry are quite different from those for most other sectors. The industry is very diverse and is often controlled by very large multi-national corporations. In this context, the appropriate approach needs to be carefully considered. The industry is generally receptive to efforts to cut its energy costs but it is less likely to be attracted to regulatory measures that increase its operating costs. The technical options available for energy savings in the industrial sector: i)Electric Motors
ii) Compressed Air
iii)Steam
iv)Furnaces
v)Heat Recovery

vi)Regulatory Measures vii)Awareness Raising and Education viii)Energy Savings Through Cogeneration ix)Energy Savings and Furnaces x)Energy Savings in Steam Distribution Systems

so.these are the ways to save the energy in industry and the importance of energy.