Energy Management

Energy Management

Maheswari M. (Nalla Malla Reddy Engineering College, India), Gunasekharan S. (Lord's Institute of Engineering and Technology, India) and Sumadeepthi Veeraganti (Malla Reddy Engineering College (Autonomous), India)
Copyright: © 2020 |Pages: 12
DOI: 10.4018/978-1-5225-8551-0.ch008


Energy is described as the amount of work that can be done by force. There are various forms of energy such as kinetic energy, potential energy, thermal energy, light energy, sound energy, and electromagnetic energy. As per the law of conservation of energy, it is neither created nor destroyed. In this modern era, energy became an integral part of our life. The life without energy is not at all possible nowadays. The energy is not offered at free of cost and it comes at an affordable prize. The generation of energy requires natural resources which are exhaust day by day. At the same time, the usage of energy is increasing exponentially. Managing and reducing energy consumption not only saves money but also helps in mitigating climate change and enhancing corporate reputation. The organizations can achieve appreciable energy reduction by adopting simple measures. This chapter discuss about the present scenario of energy, need for energy management, energy management program, and its various steps involved.
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Energy Consumption And Gdp

The GDP of any nation is related to its energy consumption. To illustrate this concept the energy consumption from an historical viewpoint is given in Table 1. It shows the average daily consumption of people in various societies from early period to recent. The increase in per capita energy consumption exponentially as the advancement and industrialization took place in the society is shown in Table1. In early years the humans were lived in forest and had fruits, nuts and vegetables. Then the people started to hunt the animals and they learnt to use fire for cooking and heating. After later stages, societies developed and the first energy usage applied for agricultural and then for industrial practices. Now a days the advancements took place in each and every aspect and all requires energy. It is clear from Table 1, the per capita energy consumption approximately increases from 2000 kilocalories to 21000 kilocalories from ancient days to late 1990's.

Table 1.
Overview of per capita energy consumption from BC to AD
Period and LocationType of SocietyCharacteristicsEstimated Daily per Capita Energy Consumption
Very earlyGatherers Gatheredwild fruit,
nuts and vegetables
2000 kCal (8.2 MJ)
1000 000 BCHunter-gatherersGathered wild fruit
etc., hunted and
cooked food
4 000 kCal (16.4 MJ)
4000 ac Middle EastSettled farmersSowed crops and
kept animals
12 000 kCal (49.2 MJ)
AD 1500 EuropeAgricultural with
small scale Industry
Agricultural society with specialized industry21 000 kCal (88.2 MJ)
AD 1900 EuropeIndustrialized SocietyLarge Scale Industry and Mass production.90 000 kCal (378 MJ)
AD 1500 USA, Europe and othersAdvanced Industrialized SocietyConsumer society, mass transport, many labour saving devices250 000 kCal (1 GJ)

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