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Combined heat and power unit capacity for high-heat to power ratio buildings without selling excess electricity to the grid

Cho, Woojin; Kim, Janghyun; Lee, Kwan-Soo - In: Energy 38 (2012) 1, pp. 354-361

This study presents a simple approach to estimate the capacity of combined heat and power (CHP) units suitable for … methods used in this approach, a graphical method and a simple equation, are capable of predicting the optimum capacity to … advantage of selecting the optimum capacity using the base and peak of the demand power load. The two easy-to-use methods can be …

Persistent link: https://www.econbiz.de/10010807806

A simple sizing method for combined heat and power units

Cho, Woojin; Lee, Kwan-Soo - In: Energy 65 (2014) C, pp. 123-133

method gives the appropriate capacity graphically from the LDC of a building's heating demand. The method can be applied to …

Persistent link: https://www.econbiz.de/10010810015

The mechanism of boron removal in the CaO–SiO2–Al2O3 slag system for SoG-Si

Jung, Eun Jin; Moon, Byung Moon; Seok, Seong Ho; Min, … - In: Energy 66 (2014) C, pp. 35-40

The dissolution behavior of boron in a molten slag was evaluated at 1773 K to establish the boron removal mechanism from silicon refining for preparing higher purity solar-grade silicon. From the experimental results, a mechanism of boron removal from silicon into the CaO–SiO2–Al2O3 slag...

Persistent link: https://www.econbiz.de/10011054348

Investigation of thermal characteristics of high-capacity loop heat pipes after a long-term storage

Maydanik, Yu.F.; Chernysheva, M.A.; Pastukhov, V.G. - In: Energy 74 (2014) C, pp. 804-809

Repeat thermal tests of two high-capacity LHPs (loop heat pipes) have been conducted after their long-term storage … under normal conditions. The first of them 1820 mm long with a capacity of 1200 W and water as a working fluid was made and … first tested in 1985. The other device with a length of 2750 mm and a capacity of 800 W, which consisted of two ammonia LHPs …

Persistent link: https://www.econbiz.de/10011055337

Economic comparison between coal-fired and liquefied natural gas combined cycle power plants considering carbon tax: Korean case

Jeong, Suk-Jae; Kim, Kyung-Sup; Park, Jin-Won; Lim, … - In: Energy 33 (2008) 8, pp. 1320-1330

Economic growth is main cause of environmental pollution and has been identified as a big threat to sustainable development. Considering the enormous role of electricity in the national economy, it is essential to study the effect of environmental regulations on the electricity sector. This...

Persistent link: https://www.econbiz.de/10010808079

A system dynamics based model for coal investment

Fan, Ying; Yang, Rui-Guang; Wei, Yi-Ming - In: Energy 32 (2007) 6, pp. 898-905

Coal is the dominating energy source in China. Although the supply and demand of coal has kept equilibrium along with China's continuous and steady economic development in recent years, the sustainable production ability has been seriously decreasing. In this paper, a system dynamics model is...

Persistent link: https://www.econbiz.de/10010808108

Construction of a fuel demand function portraying interfuel substitution, a system dynamics approach

Abada, Ibrahim; Briat, Vincent; Massol, Olivier - In: Energy 49 (2013) C, pp. 240-251

Most of the recent numerical market partial equilibrium models of natural gas markets use imperfect competition assumptions. These models are typically embedded with a simple representation of the demand side, usually a single-variable, linear, inverse demand function, that does not capture any...

Persistent link: https://www.econbiz.de/10010809067

Generation expansion planning (GEP) – A long-term approach using system dynamics and genetic algorithms (GAs)

Pereira, Adelino J.C.; Saraiva, João Tomé - In: Energy 36 (2011) 8, pp. 5180-5199

capacity factors. This defines a feedback mechanism between the individual expansion planning problems and the long-term System …This paper presents a model to solve the Generation Expansion Planning (GEP), problem in competitive electricity … that the planning environment is influenced by uncertainties affecting the demand, fuel prices, investment and maintenance …

Persistent link: https://www.econbiz.de/10010809315

Long-term renewable energy technology valuation using system dynamics and Monte Carlo simulation: Photovoltaic technology case

Jeon, Chanwoong; Shin, Juneseuk - In: Energy 66 (2014) C, pp. 447-457

A new long-term technology valuation method for renewable energy technologies that combines system dynamics with Monte Carlo simulation is proposed. Existing valuation methods using surveys or cash flows are suitable for technologies characterized by short lifecycles and little uncertainty, but...

Persistent link: https://www.econbiz.de/10010809703

Scenarios of China's oil consumption per capita (OCPC) using a hybrid Factor Decomposition–System Dynamics (SD) simulation

Tao, Zaipu - In: Energy 35 (2010) 1, pp. 168-180

This paper describes a study that combined traditional Factor Decomposition method and System Dynamics (SD) modeling in the quest to predict the pattern of future oil consumption per capita (OCPC).

Persistent link: https://www.econbiz.de/10010810131