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Composition optimisation of working fluids for Organic Rankine Cycles and Kalina cycles

Victor, Rachel Anne; Kim, Jin-Kuk; Smith, Robin - In: Energy 55 (2013) C, pp. 114-126

An optimisation model for the composition of mixed working fluids for (Organic Rankine Cycles) ORCs and Kalina cycles … optimisation method of the composition was carried out with Simulated Annealing technique with the objective function of maximising …

Persistent link: https://www.econbiz.de/10011053611

CO2-free power generation in combined cycles—Integration of post-combustion separation of carbon dioxide in the steam cycle

Möller, Björn Fredriksson; Assadi, Mohsen; Potts, Ian - In: Energy 31 (2006) 10, pp. 1520-1532

Ever since the release of the Kyoto protocol the demand for CO2-free processes have been increasing. One of the most expanding sources of electric power in the industrialised world today is the gas-fired combined cycle, combining high efficiency and low investment cost. In this paper, the...

Persistent link: https://www.econbiz.de/10011053950

Robust models for the synthesis of flexible palm oil-based regional bioenergy supply chain

Foo, Dominic C.Y.; Tan, Raymond R.; Lam, Hon Loong; … - In: Energy 55 (2013) C, pp. 68-73

EFB (Empty fruit bunch) is among the palm oil biomass residues that have been identified as the most abundant bioenergy resources in Southeast Asia. EFB has a good potential to meet the targeted share of renewable energy in this region. This work presents robust LP (linear programming) model to...

Persistent link: https://www.econbiz.de/10011054190

Operating conditions of an open and direct solar thermal Brayton cycle with optimised cavity receiver and recuperator

Le Roux, W.G.; Bello-Ochende, T.; Meyer, J.P. - In: Energy 36 (2011) 10, pp. 6027-6036

finite temperature difference and fluid friction. In this paper, thermodynamic optimisation is applied to concentrate on … performance were investigated. The dynamic trajectory optimisation method was applied. Operating points of a standard micro …

Persistent link: https://www.econbiz.de/10011054517

The influence of the legal and economical environment and the profile of activities on the optimal design features of a natural-gas-fired combined heat and power plant

Kotowicz, Janusz; Bartela, Łukasz - In: Energy 36 (2011) 1, pp. 328-338

The paper deals with the effect of some selected quantities occurring in the legal and economical environment on the optimal values of some selected design quantities of a natural-gas-fired CHP plant. This trend of investigations results from the newly observed legal changes in the legislation...

Persistent link: https://www.econbiz.de/10011055049

Characterisation of heavy petroleum fractions using modified molecular-type homologous series (MTHS) representation

Gomez-Prado, Juan; Zhang, Nan; Theodoropoulos, Constantinos - In: Energy 33 (2008) 6, pp. 974-987

The molecular characterisation of refinery feedstocks is a challenging task since, typically, a vast number of components are present in the mixture. Non-experimental approaches for characterisation of hydrocarbon streams fall into three categories: pseudo-component, compound class and average...

Persistent link: https://www.econbiz.de/10011055132

A framework for local and regional energy system integration between industry and municipalities—Case study UPM-Kymmene Kaukas

Tveit, Tor-Martin; Aaltola, Juha; Laukkanen, Timo; … - In: Energy 31 (2006) 12, pp. 2162-2175

The integration of different energy systems, e.g., industrial and municipal, is potentially important for the efficient utilization of energy. It is important that the tools for analysing this type of integration can handle the energy systems on different levels, e.g., regional, site, plant and...

Persistent link: https://www.econbiz.de/10011055618

The influence of economic parameters on the optimal values of the design variables of a combined cycle plant

Kotowicz, Janusz; Bartela, Łukasz - In: Energy 35 (2010) 2, pp. 911-919

of economic optimisations were compared with the results of the optimisation, where the electric efficiency was the …

Persistent link: https://www.econbiz.de/10011055678

Impacts of temporal precision in optimisation modelling of micro-Combined Heat and Power

Hawkes, Adam; Leach, Matthew - In: Energy 30 (2005) 10, pp. 1759-1779

When modelling the environmental and economic aspects of meeting a given heat and power demand with a combination of combined heat and power (CHP) and grid power, it is common to use a coarse temporal precision such as 1-h demand blocks in heat and power demand data. This may be appropriate for...

Persistent link: https://www.econbiz.de/10011055725

Thermodynamic optimisation and computational analysis of irreversibilities in a small-scale wood-fired circulating fluidised bed adiabatic combustor

Baloyi, J.; Bello-Ochende, T.; Meyer, J.P. - In: Energy 70 (2014) C, pp. 653-663

An analysis of irreversibilities generated due to combustion in an adiabatic combustor burning wood was conducted. This was done for a reactant mixture varying from a rich to a lean mixture. A non-adiabatic non-premixed combustion model of a numerical code was used to simulate the combustion...

Persistent link: https://www.econbiz.de/10011055826