Environmental assessment of CCHP (combined cooling heating and power) systems based on biomass combustion in comparison to conventional generation

Maraver, Daniel Capitán; Sin, Ana; Sebastián, Fernando; Royo, Javier

doi:10.1016/j.energy.2013.02.014

Cited by 125 publications

(54 citation statements)

References 25 publications

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“…The CHP facility is able to reduce the dissipated part up to around 15-20 %. The CCHP facility introduces a further advantage: part of the recovered heating is employed in the production of refrigerated water thanks to an absorption freezing cycle [35]. In such a case the energy conservation is represented by the lower quantity of primary energy employed in the freezing cycle thus adding to the effectiveness of the co-generation system a greater effectiveness in freezing production.…”

Section: Discussionmentioning

confidence: 99%

Recycling, waste management and urban vegetable gardens

Sgobbo¹

2016

WIT Transactions on Ecology and the Environment

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Waste management is an issue where several technical, technological but also social and cultural factors contribute to make it complex, while the concentration of waste production in big cities mainly gives it an urban and metropolitan dimension. Remarkable difficulties can be found in the scarce motivation of the citizens to actively participate in the process of trash separation and collection as well as in the dislike they feel towards the systems and facilities dedicated to waste processing. This paper reports on research in this subject carried out at the University of Naples thanks to a scientific cooperation agreement with the Dutch multinational company Còrio. The verified thesis showed the existence of a close relationship between direct and tangible motivations and the users' attitude to trash separation. The results were significantly above those expected to be obtained through coercive methods or, even worse, through the promise of an abstract general benefit. The above-mentioned research also brought the implementation of a prototype made up of a playful but at the same time educational urban vegetable garden of around 800 sq. m with a virtuous management system of organic household waste. The experiment, named Orto in Campania, showed the real effectiveness of the proposed solutions with a strong motivational value for the citizens' involvement but also the mutability of it both in well-established and in new urban areas. The success was so huge that this installation, intended as temporary, is still on course after more than five years.

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Section: Discussionmentioning

confidence: 99%

Recycling, waste management and urban vegetable gardens

Sgobbo¹

2016

WIT Transactions on Ecology and the Environment

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“…LCAs were undertaken considering the ISO 14040 standards [33,34] and the methodological issues regarding energy systems, and were performed using the SimaPro 7.3 software package [35] and the Ecoinvent database [36]. The environmental interventions were categorized and weighted according to the Eco-Indicator 99 [37] impact evaluation method, which is the more restrictive according to the results obtained in previous works [10].…”

Section: Life Cycle Assessment (Lca)mentioning

confidence: 99%

“…This analysis is based on the main conclusions of previous works [4,5,10], which show that the feasibility of CCHP in comparison to conventional generation is limited both by the technologies involved and the cooling-to-heating ratio.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Biomass-Fuelled Combined Cooling, Heating and Power (CCHP) Systems Integrated with Subcritical or Transcritical Organic Rankine Cycles (ORCs)

Maraver

Quoilin

Royo

2014

Entropy

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This work is focused on the thermodynamic optimization of Organic Rankine Cycles (ORCs), coupled with absorption or adsorption cooling units, for combined cooling heating and power (CCHP) generation from biomass combustion. Results were obtained by modelling with the main aim of providing optimization guidelines for the operating conditions of these types of systems, specifically the subcritical or transcritical ORC, when integrated in a CCHP system to supply typical heating and cooling demands in the tertiary sector. The thermodynamic approach was complemented, to avoid its possible limitations, by the technological constraints of the expander, the heat exchangers and the pump of the ORC. The working fluids considered are: n-pentane, n-heptane, octamethyltrisiloxane, toluene and dodecamethylcyclohexasiloxane. In addition, the energy and environmental performance of the different optimal CCHP plants was investigated. The optimal plant from the energy and environmental point of view is the one integrated by a toluene recuperative ORC, although it is limited to a development with a turbine type expander. Also, the trigeneration plant could be developed in an energy and environmental efficient way with an n-pentane recuperative ORC and a volumetric type expander. OPEN ACCESSEntropy 2014, 16 2434

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“…Not only the curbing depletion of fossil fuel but negative environmental impacts associated with it, such as greenhouse gases, acid rain, and deterioration in climate has caught the interest of exploiting the renewable energy like biomass as fuel [1]. A study by Daniel et al [2] has revealed integrating biomass into combined cooling and heating power (CCHP) for providing energy for buildings. Utilizing biomass or waste can lessen the environmental issues due to high carbon dioxide emissions, which are chiefly produced by fossil fuels.…”

Section: Introductionmentioning

confidence: 99%

Utilizing Downdraft Fixed Bed Reactor for Thermal Upgrading of Sewage Sludge as Fuel by Torrefaction

Karki

Poudel

2017

Applied Sciences

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A lab-scale downdraft fixed bed reactor was used for the study of sewage sludge, a non-lignocellulosic biomass, torrefaction to enhance the thermochemical properties of sewage sludge. The torrefaction was carried out for a temperature range of 200-350 • C and a residence time of 0-50 min. Degree of torrefaction, torrefaction index, chemical exergy, gas analysis, and molar ratios were taken into account to analyze the torrefied product with respect to torrefaction temperature. The effect of torrefaction temperature was very pronounced and the temperature range of 250-300 • C was considered to be the optimum torrefaction temperature range for sewage sludge. Chemical exergy, calorific value and torrefaction index were significantly influenced by the change in the relative carbon content resulting in decrease of the O/C and H/C molar ratios.

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Environmental assessment of CCHP (combined cooling heating and power) systems based on biomass combustion in comparison to conventional generation

Cited by 125 publications

References 25 publications

Recycling, waste management and urban vegetable gardens

Recycling, waste management and urban vegetable gardens

Optimization of Biomass-Fuelled Combined Cooling, Heating and Power (CCHP) Systems Integrated with Subcritical or Transcritical Organic Rankine Cycles (ORCs)

Utilizing Downdraft Fixed Bed Reactor for Thermal Upgrading of Sewage Sludge as Fuel by Torrefaction

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