Zobrazeno 1 - 10
of 30
pro vyhledávání: '"Giulio Contaldi"'
Publikováno v:
Case Studies in Thermal Engineering, Vol 4, Iss C, Pp 113-117 (2014)
A way to increase the efficiency of positive-displacement air compressor is spraying the lube oil to exploit it not only as lubricating and sealing agent but also as thermal ballast. This work seeks the experimental evidence in sliding-vane compresso
Externí odkaz:
https://doaj.org/article/803bd7c4991e4d95b9c0e05f1ae48b32
Publikováno v:
Energy Procedia. 81:775-783
The efficiency of a pump for engine cooling system in automotive sector can be very low (15%-20%) during the homologation cycle which is more oriented to medium and low engine loads. Actual pump technology makes reference always to centrifugal pumps,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c85bde3547b802ebac883f67478f3f31
Publikováno v:
International Journal of Refrigeration. 52:11-20
The present work highlights the energy saving potential of the lubricant fluid supplied in Sliding Vane Rotary air Compressors. A Lagrangian theoretical model of a sprayed oil injection technology assessed the cooling effect of the lubricant due to t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::44e01e5f93efea4ebae7441b56454ded
https://doi.org/10.1016/j.ijrefrig.2014.12.020
https://doi.org/10.1016/j.ijrefrig.2014.12.020
Autor:
Giuseppe Bianchi, Sham Rane, Giulio Contaldi, Stefano Murgia, Ahmed Kovacevic, Roberto Cipollone
Positive displacement machines are the most suitable devices for small-scale waste heat to power conversion units based on an Organic Rankine Cycle (ORC) due to their capabilities of handling small mass flow rates and high pressure ratios. Among the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b0b80b2e1f41d349b8475b542035de45
https://openaccess.city.ac.uk/id/eprint/18481/1/ORC2017_ID79_CFDinSVRE_revised.pdf
https://openaccess.city.ac.uk/id/eprint/18481/1/ORC2017_ID79_CFDinSVRE_revised.pdf
Compressed air production is an energy–intensive sector, thus compressor manufacturers are constantly looking for enhancing the efficiency, by acting on several technological aspects. In an air compressor, about 80-90% of the input electric power u
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e91749fed391920f542a14e0017c6318
http://hdl.handle.net/11311/1042930
http://hdl.handle.net/11311/1042930
Autor:
Giuseppe Bianchi, Roberto Cipollone, Stefano Murgia, Ahmed Kovacevic, Giulio Contaldi, Sham Rane
The limiting factor for the employment of advanced 3D CFD tools in the analysis and design of rotary vane machines is the unavailability of methods for generation of computational grids suitable for fast and reliable numerical analysis. The paper add
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::65af0355e2c64a219fc0866839d25286
http://bura.brunel.ac.uk/handle/2438/15138
http://bura.brunel.ac.uk/handle/2438/15138
Pumping work in energy recovery units based on Organic Rankine Cycles (ORC) can severely affect the net power output recovered. Nevertheless, in recent years scientific andindustrial communities mainly focused on expanders’ development. In order to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2b084786cd5cec2ed96866d5fe214ac8
http://hdl.handle.net/11697/119944
http://hdl.handle.net/11697/119944
Autor:
Roberto Cipollone, Gianluca Valenti, Giuseppe Bianchi, Stefano Murgia, Tommaso Calvi, Giulio Contaldi
In industrial contexts, electrical energy for compressed air represents an important share of the global electricity consumption: this figure accounts for 4–5% of the total. Among the existing compressor technologies, rotary volumetric machines pro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cab588380f811f8dc5ad18b4c1856010
http://bura.brunel.ac.uk/handle/2438/14602
http://bura.brunel.ac.uk/handle/2438/14602
Positive-displacement compressors and, among them, sliding-vane rotary machines are widely used in the compressed air sector. As in many other industrial fields, the efficient utilization of energy has become a major goal also in this sector. The aim
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e6d6ad192e0b405476832d1e751008e1
http://hdl.handle.net/11311/963983
http://hdl.handle.net/11311/963983
Publikováno v:
IOP Conference Series: Materials Science and Engineering. 232:012054
Lube-oil injection is used in positive-displacement compressors and, among them, in sliding-vane machines to guarantee the correct lubrication of the moving parts and as sealing to prevent air leakage. Furthermore, lube-oil injection allows to exploi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b37f5d18b0ccc15618e396a1ecc0a15c
https://doi.org/10.1088/1757-899x/232/1/012054
https://doi.org/10.1088/1757-899x/232/1/012054