• Journal of Energy Engineering
• /
• v.3 no.1
• /
• pp.4-9
• /
• 1994

• Journal of the KSME
• /
• v.30 no.6
• /
• pp.515-520
• /
• 1990

• JOURNAL OF ELECTRICAL WORLD
• /
• s.319
• /
• pp.27-34
• /
• 2003

• 전기산업
• /
• v.4 no.2
• /
• pp.26-41
• /
• 1993

• 유체기계공업학회:학술대회논문집
• /
• 2006.08a
• /
• pp.313-316
• /
• 2006

As Decentralized Generation(DG) becomes more reliable and economically feasible, it is expected that a higher application of DG units would be interconnected to the existing grids. This new market penetration of DG technologies is linked to a large number of factors like technologies costs and performances, interconnection issues, safety, market regulations, environmental issues or grid connection constrains. Korea Electric Power Corporation (KEPCO) has researched performance characteristics of the 60k W class 1) basic start-up & shutdown operation analysis 2) interconnection test 3) MGT -absorption chiller-heater system in the local condition. Variations of heat recovery from exhaust gas has measured according to micro gas turbine output of 15, 30, 45, 60kW. From those results, the performance of the MGT-absorption chiller/heater system has been evaluated. The suggested strategy and experience for the evaluation of the distributed generation will be used for the introduction of other distributed generation technologies into the grid in the future.

• Plant Journal
• /
• v.18 no.2
• /
• pp.46-51
• /
• 2022

As GHG reduction becomes a major global issue, the importance and interest of ETS is increasing. Korea experienced positive effects of the system since the introduction of ETS in 2015, but also faced various problems. The focus of this study is on the issue of applying the ETS system to the group energy of industrial complexes. The group energy of industrial complexes is a unique industrial form of Korea that cannot be found in the world. Therefore, if the system is implemented in the same way as the preceding countries, it will inevitably cause problems. In particular, the group energy of industrial complexes has the characteristic that the conditions and amount of heat supplied are dtermined according to the demands of customers and the amount of power generation is determined accordingly. We investigated how differenct temperatures of heat produced in cogeneration affect carbon credit calculations.

• Korean Journal of Air-Conditioning and Refrigeration Engineering
• /
• v.21 no.2
• /
• pp.71-78
• /
• 2009

Up until recently, the energy and the economic analysis of a cogeneration system have been implemented by a manual calculation that is based on monthly thermal loads of buildings. In this study, a cogeneration system modeling validation with a detail building energy simulation, eQUEST, for a building energy and cost prediction has been implemented. By analyzing the hourly building electricity and thermal loads, it enables users to decide proper cogeneration system capacity and to estimate more accurate building energy consumption. eQUEST also verified the energy analysis when the heat pump system is integrated with the cogeneration system. The mechanical system configuration benefits from the high efficiency heat pump system while avoiding the building electricity demand increase. Economic analysis such as LCC (Life Cycle Cost) method is carried out to verify economical benefits of the system by applying actual utility rates of KEPCO(Korea Electricity Power COmpany) and KOGAS(KOrea GAS company).

• Transactions of the Korean hydrogen and new energy society
• /
• v.32 no.5
• /
• pp.324-330
• /
• 2021

In recent years, polymer electrolyte membrane fuel cell (PEMFC) based cogeneration system has received more and more attention from energy researchers because beside electricity, the system also meets the residential thermal demand. However, the low-quality heat exited from PEMFC should be increased temperature before direct use or storage. This study proposes a method to utilize the heat exhausted from a 10 kW PEMFC by coupling a heat pump. Two different configuration using heat pump and a reference layout with heater are analyzed in term of thermal and total efficiency. The system coefficient of performance (COP) increases from 0.87 in layout with heaters to 1.26 and 1.29 in configuration with heat pump and cascade heat pump, respectively. Lastly, based on system performance result, another study in economics point of view is proposed.

• The Magazine for Energy Service Companies
• /
• s.26
• /
• pp.36-49
• /
• 2004

• Nuclear industry
• /
• v.5 no.2 s.24
• /
• pp.24-31
• /
• 1985