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A review of turbulence promoters used in solar thermal systems

Chamoli, Sunil; Thakur, N.S.; Saini, J.S. - In: Renewable and Sustainable Energy Reviews 16 (2012) 5, pp. 3154-3175

cooling of turbine blade various turbulence generators viz. ribs, baffles and delta winglets are considered as an effective …

Persistent link: https://www.econbiz.de/10010573449

A Hierarchical Aircraft Life Cycle Cost Analysis Model

Marx, William J.; Mavris, Dimitri N.; Schrage, Daniel P. - 1995

This paper presents an exploratory study for identification and quantification of the economic benefits or implications associated with wing cost variations. A hierarchical cost model structure is used to determine life cycle effects of design and manufacturing alternatives for the major...

Persistent link: https://www.econbiz.de/10009475882

Tar reduction in downdraft biomass gasifier using a primary method

Machin, Einara Blanco; Pedroso, Daniel Travieso; … - In: Renewable Energy 78 (2015) C, pp. 478-483

This work present a novel primary method, for tar reduction in downdraft gasification. The principle of this new technology is to change the fluid dynamic behaviour of the mixture, formed by pyrolysis product and gasification agent in combustion zone; allowing a homogeneous temperature...

Persistent link: https://www.econbiz.de/10011208643

Optimization of producer gas fired premixed burner

Bhoi, P.R.; Channiwala, S.A. - In: Renewable Energy 33 (2008) 6, pp. 1209-1219

Much work is reported in the literature pertaining to premixed burners using hydrocarbon fuels. However, very little work is available on similar burners using producer gas as a fuel. The present work aims at testing and optimization of a premixed burner with producer gas as a fuel.

Persistent link: https://www.econbiz.de/10010806260

Weighted Influence Non-linear Gauge System (WINGS) – An analysis method for the systems of interrelated components

Michnik, Jerzy - In: European Journal of Operational Research 228 (2013) 3, pp. 536-544

The WINGS method has been derived from DEMATEL and can be widely used as a structural model for analysis of intertwined … strength (importance) and influence of the system components. In particular, WINGS can be applied as the MCDA method for …, WINGS reproduces the additive aggregation of preferences, a classical method in MCDA. …

Persistent link: https://www.econbiz.de/10010871272

Studies on heat transfer and friction factor characteristics of thermosyphon solar water heating system with helical twisted tapes

Jaisankar, S.; Radhakrishnan, T.K.; Sheeba, K.N. - In: Energy 34 (2009) 9, pp. 1054-1064

Experimental investigation of heat transfer, friction factor and thermal performance of thermosyphon solar water heater system fitted with helical twisted tape of various twist ratios has been performed and presented. The helical twisted tape induces swirl flow inside the riser tubes, which...

Persistent link: https://www.econbiz.de/10011054284

An experimental study on the design parameters of a counterflow vortex tube

Aydın, Orhan; Baki, Muzaffer - In: Energy 31 (2006) 14, pp. 2763-2772

In this experimental study, the design parameters and performances of counterflow vortex tubes are investigated. Under different inlet pressures, the thermal performance as a function of the following geometrical parameters is studied: the length of the vortex tube, the diameter of the inlet...

Persistent link: https://www.econbiz.de/10011054923

The WINGS method with multiple networks and its application to innovation projects selection

Michnik, Jerzy - In: International journal of applied management science 10 (2018) 2, pp. 105-126

Persistent link: https://www.econbiz.de/10011885714

Grey weighted influence non-linear gauge systems (WINGS) for evaluating consumption barriers of refurbished mobile phones for a circular economy

Olorvida, Rey Cesar; Bande, Rey Ann; Ngalot, Dennis; … - In: Cleaner and responsible consumption 8 (2023), pp. 1-12

development of a proposed integration of grey system theory and the weighted influence non-linear gauge systems (WINGS), coined … grey WINGS. Findings from a case study in the Philippines reveal that negative perception, inferior quality, the …) methodologically, integrating grey system theory within the framework of the WINGS method to address uncertainty in judgment …

Persistent link: https://www.econbiz.de/10014514901