Investigation of thermal architectures for flue-gas assisted organic rankine cycle systems: an assessment for thermodynamics and environmental performance indicators

Author(s):  
Burak Turkan ◽  
Akin Burak Etemoglu ◽  
Muhiddin Can
2016 ◽  
Vol 37 (4) ◽  
pp. 503-515 ◽  
Author(s):  
Krzysztof Sornek ◽  
Mariusz Filipowicz

Abstract Straw-fired batch boilers, due to their relatively simple structure and low operating costs, are an excellent source of heat for a wide range of applications. A concept prototype of a cogeneration system with a straw-fired batch boiler was developed. The basic assumptions were based on the principles of the Rankine Cycle and the Organic Rankine Cycle systems with certain design modifications. Using the prototype design of a system that collects high-temperature heat from the boiler, studies were performed. The studies involved an analysis of the flue gas temperature distribution in the area of the oil exchanger, a comparison of the instantaneous power of the boiler’s water and oil circuits for different modes of operation, as well as an analysis of the flue gas. In the proposed system configuration where the electricity production supplements heat generation, the power in the oil circuit may be maintained at a constant level of approx. 20-30 kW. This is possible provided that an automatic fuel supply system is applied. Assuming that the efficiency of the electricity generation system is not less than 10%, it will be possible to generate 2-3 kW of electricity. This value will be sufficient, for an on-site operation of the boiler.


2014 ◽  
Vol 47 ◽  
pp. 16-25 ◽  
Author(s):  
Amalia Zucaro ◽  
Maddalena Ripa ◽  
Salvatore Mellino ◽  
Marco Ascione ◽  
Sergio Ulgiati

2016 ◽  
Vol 64 ◽  
pp. 790-805 ◽  
Author(s):  
Huixing Zhai ◽  
Qingsong An ◽  
Lin Shi ◽  
Vincent Lemort ◽  
Sylvain Quoilin

Author(s):  
Paul Stefan Trandafir ◽  
Adrian Ioana ◽  
Roxana Marina Solea ◽  
Daniela Tufeanu ◽  
Diana Cristina Labes (Craciun)

Environment protection, like a new religion consists of: environmental programmes, objectives and targets, training, incentive schemes, audit frequency, site inspections, administration and community relations. This paper presents the main environmental performance indicators. They should therefore be cost-effective and appropriate to the size and type of organization and its needs and priorities. Organizations should make the optimum use of the environmental information they collect. To this end the indicators should fulfill the dual purpose of assisting the management of the organization and providing information to stakeholders. In article we present a set of Environmental Performance Indicators (EPI). These indicators should therefore be cost-effective and appropriate to the size and type of organization and its needs and priorities. We present many categories of environmental performance indicators: comparability (indicators should enable a comparison and show changes in the environmental performance); balance between problematic (bad) and prospective (good) areas, continuity (indicators should be based on the same criteria and should be taken over comparable time sections or units); timeliness (indicators should be updated frequently enough to allow action to be taken); clarity (indicators should be clear and understandable).


2019 ◽  
Vol 14 (1) ◽  
pp. 122-140 ◽  
Author(s):  
Jan Alpenberg ◽  
Tomasz Wnuk-Pel ◽  
Philip Adamsson ◽  
Johannes Petersson

Purpose The purpose of this paper is to examine why and how municipal managers and CEOs for municipally owned companies use the environmental performance indicators. Design/methodology/approach A case study approach as a research design was used. In total, 18 semi-structured interviews were conducted among managers for administrative departments and municipal company CEOs. Findings This study found that the environmental performance indicators are used by department managers mainly for resource allocation, control and for teaching the employees. The CEOs of the municipal companies use the environmental indicators for communicating with external stakeholders and see the indicators primarily as marketing tools. The main reason why the environmental performance indicators are used in the municipality can be the strong demand from the local politicians to push the “green agenda,” and therefore the managers have to comply. Research limitations/implications As in any case study, generalizations from the research should be made with care, but since this is only one municipality, further research is needed to find additional evidence. Practical implications The findings of this study have a number of implications for future practice, and it is worth mentioning that clear guidelines for how the information could be made more useful for managers at the managerial level in Växjö municipality (VM) are requested for both the municipal managers and the CEOs. Social implications Overall, this study strengthens the idea that environmental performance indicators could be used to a larger extent for communicating with external stakeholders both for municipal departments and companies. Originality/value The research adds to the literature by examining different patterns of using environmental performance indicators in a unique setting – in VM, which is called “the greenest city in Europe” and is one of the “pioneers” in environmental work and extensively uses performance indicators.


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