Due to its relatively high total energy eeciency, the application of cogeneration is attracting increased attention. Today cogeneration is an essential element in the energy supply system in many countries, and when environmental and economic aspects are considered too, it seems to be a relevant option in expansion planning in many situations. The present paper presents a quite general and yet ...

The study deals with an emergy evaluation of the supply of electricity and heat to a large user, namely a public hospital in Northern Italy. We performed firstly a conventional LCA evaluation, in order to identify and quantify the material and energy flows involved in three cogeneration alternatives for the hospital. The evaluated cogeneration alternatives were: 1) an Internal Combustion Engine...

In this article, the first and second law analysis of diesel engine based cogeneration system was performed. Fuel utilization efficiency, rate of power, and rate of process heat of the plant were determined and various efficiencies based on both energy and exergy methods and the performance assessment parameters are defined for both the system components and the entire cogeneration plant. The o...

⇑ Corresponding author. E-mail addresses: [email protected] (C.-T. H (H.-J. Chuang), [email protected] (C.-S. Chen). This paper presents the design of adaptive load-shedding strategy by executing the artificial neural network (ANN) and transient stability analysis for an Industrial cogeneration facility. To prepare the training data set for ANN, the transient stability analysis has been p...

Refrigeration cogeneration systems which generate power alongside with cooling improve energy utilization significantly, because such systems offer a more reasonable arrangement of energy and exergy ‘‘flows’’ within the system, which results in lower fuel consumption as compared to the separate generation of power and cooling or heating. This paper proposes several novel systems of that type, b...

The supply of energy services plays a major role in human society but also induces major environmental problems. Common efforts have to be focus on the development of new power conversion systems with reduced environmental impact and higher efficiencies to preserve the resources. Distributed power generation and cogeneration represent an attractive way for a more advantageous and sustainable fo...

Micro cogeneration – the simultaneous production of heat and power in an individual building based on small energy conversion units such as Stirling and reciprocating engines or fuel cells – is expected to increase energy efficiency on the level of household energy supply. A large-scale introduction of micro CHP may radically change the electricity system and turn consumers into power producers...

in this paper, the application of neural networks for simulation and optimization of the cogeneration systems has been presented. cgam problem, a benchmark in cogeneration systems, is chosen as a casestudy. thermodynamic model includes precise modeling of the whole plant. for simulation of the steadysate behavior, the static neural network is applied. then using dynamic neural network, plant is...

A novel cogeneration system is proposed for power generation and seawater desalination. It combines the CRGT (chemically recuperated gas turbine) with the MED-TVC (multi-effect thermal vapor compression desalination) system. The CRGT contains a MSR (methane-steam reformer). The produced syngas includes plenty of steam and hydrogen, so theworkingmedium flow increases and NOx emissions can achiev...