• The Magazine of the Society of Air-Conditioning and Refrigerating Engineers of Korea
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• v.24 no.1
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• pp.56-65
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• 1995

• The Proceedings of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.6 no.3
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• pp.17-22
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• 1992

• Proceedings of the Korean Society of Crop Science Conference
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• 1985.10a
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• pp.20-20
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• 1985

• Ceramist
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• v.20 no.4
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• pp.47-54
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• 2017

• Intergrated Energy Industry
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• s.1
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• pp.16-19
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• 2005

• Electrical & Electronic Materials
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• v.24 no.6
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• pp.23-32
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• 2011

• Korea Petroleum Association Journal
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• no.8 s.18
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• pp.54-58
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• 1982

• Journal of the Korea Institute of Information and Communication Engineering
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• v.14 no.11
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• pp.2569-2574
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• 2010

In this paper, we introduce an efficient energy management using a notion of virtual energy system for shared solar-powered sensor network. Virtual energy system is an abstraction that allows sensor network applications on a node to reserve their own fractions of the shared solar cell and the shared rechargeable battery, hence achieving logically partition of a shared renewable power source. Our results show that our design and implementation are reliable, lightweight and efficient, allowing proper isolation of energy consumption among applications.

• Explosives and Blasting
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• v.27 no.2
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• pp.56-60
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• 2009

In view of physics, energy is defined as the ability to work. The use of natural gas and nuclear power have been increased since 1980s to replace fossil fuels such as coal and petroleum. Recently, solar energy, wind power, tidal power, and geothermal energy have been considered as promising alternative energy sources to overcome environmental pollution. However, their energy efficiencies are much lower than those of chemical energies such as nuclear power, explosive, and petroleum gas. In this study, the present situation of the green energy was reviewed to seek out the way to overcome the limit of the environmental (alternative) energy. Also, purification, application and development trend of the highly efficient alternative energy sources were investigated.

• Proceedings of the Korea Society for Energy Engineering kosee Conference
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• 1993.11a
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• pp.64-68
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• 1993

This paper represents a programme to build and to drive the Regional Energy Planning System(REPS), which projects the expansion of energy supply and the requirement of energy accompany with the reducing of energy consumption by the energy conservation technologies and the considering of environment by the clean energy technologies in the region of each consumer works at. Therefore, in this paper, defined the REPS, presented the main items and contents should be involved in it, and discussed the way to build and to drive it.