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João Silva, Vitor Guedes, Senhorinha Teixeira, Pedro Lobarinhas, José Carlos Teixeira, Nelson Rodrigues
Proc. ASME. IMECE2021, Volume 10: Fluids Engineering, V010T10A055, November 1–5, 2021
Paper No: IMECE2021-73589
...Proceedings of the ASME 2021 International Mechanical Engineering Congress and Exposition IMECE2021 November 1-5, 2021, Virtual, Online IMECE2021-73589 NUMERICAL SIMULATION OF THE FLOW INSIDE A HORIZONTAL CLOSED REFRIGERATED DISPLAY CABINET João Silva University of Minho Mech. Engng Dpt. 4800-058...
Proc. ASME. IMECE2019, Volume 6: Energy, V006T06A050, November 11–14, 2019
Paper No: IMECE2019-11941
...Abstract Abstract Heating, ventilation and air-conditioning (HVAC) systems can consume over 5 quads of energy annually, representing 30% of energy consumption in the U.S. in commercial buildings. Additionally, commercial refrigeration (R) systems add about 2 quads to commercial buildings energy...
Proc. ASME. IMECE2010, Volume 5: Energy Systems Analysis, Thermodynamics and Sustainability; NanoEngineering for Energy; Engineering to Address Climate Change, Parts A and B, 791-797, November 12–18, 2010
Paper No: IMECE2010-38507
... 01 05 2012 Previous investigations by other authors, e.g. Lorentzen , have shown that in a conventional refrigeration cycle significant throttling losses occurs. With the help of an ejector, these losses can be reduced. As a result, the energetic efficiency (COP) of the refrigerant...
Proc. ASME. IMECE2008, Volume 8: Energy Systems: Analysis, Thermodynamics and Sustainability; Sustainable Products and Processes, 517-522, October 31–November 6, 2008
Paper No: IMECE2008-66363
...Proceedings of IMECE2008 2008 ASME International Mechanical Engineering Congress and Exposition ctober 31-November 6, 2008, Boston, Massachusetts, USA C YC compression cascade refrigeration cycle that consists of a high and low temperature cycles is presented. In the high temperature cycle...
Proc. ASME. IMECE2008, Volume 8: Energy Systems: Analysis, Thermodynamics and Sustainability; Sustainable Products and Processes, 163-173, October 31–November 6, 2008
Paper No: IMECE2008-67029
... 11 09 2009 There is often a need for both water desalination and cooling (refrigeration/air-conditioning). The cooling can be used to significantly raise system efficiency by compressor inlet cooling in a dual-purpose power-generation and desalination system using gas turbines...
Proc. ASME. IMECE2007, Volume 15: Sustainable Products and Processes, 11-17, November 11–15, 2007
Paper No: IMECE2007-42497
... 26 05 2009 Irreversibility analyses during compression process are presented for some refrigerants namely, R290, R134a, R12, R22, and R152a in a vapor compression refrigeration cycle. The effects of evaporator temperature, condenser temperature and isentropic efficiency...
Proc. ASME. IMECE2002, Advanced Energy Systems, 287-295, November 17–22, 2002
Paper No: IMECE2002-33308
... 23 05 2008 A combined power and cooling cycle is being investigated. The cycle is a combination of the Rankine cycle and an absorption refrigeration cycle. Evaluating the efficiency of this cycle is made difficult by the fact that there are two different simultaneous outputs, namely...
Proc. ASME. IMECE2003, Process Industries, 75-83, November 15–21, 2003
Paper No: IMECE2003-55222
... 14 05 2008 The objective of this paper is to review and suggest wave-rotor applications in power generation and refrigeration systems. The emphasis is on recent investigations performed by the authors for a microturbine (30 kW) and a novel enhancement of a state-of-the-art water (R718...
Proc. ASME. IMECE2004, Advanced Energy Systems, 405-413, November 13–19, 2004
Paper No: IMECE2004-60332
... loss is equal to 44%. Heat Pump Refrigeration Metal Hydrides Exergy e c a r Proceedings of IMECE04 2004 ASME International Mechanical Engineering Congress and Exposition November 13-20, 2004, Anaheim, California USA 0332machines started back in 1970 s, when a few groups in USA, in Japan...
Proc. ASME. IMECE2006, Heat Transfer, Volume 3, 193-198, November 5–10, 2006
Paper No: IMECE2006-14537
... 28 01 2008 The study develops an analytical model of an optimized small scale refrigeration system using ejector vapor compression, with application to the cooling of the electronic components populating a Printed Circuit Board (PCB) in a High-Power Microelectronics System. The authors...
Proc. ASME. IMECE2006, Advanced Energy Systems, 37-42, November 5–10, 2006
Paper No: IMECE2006-13121
... 16 01 2008 Traditional compressor design methods make it very difficult to make significant improvements to screw compressors required for refrigeration and air conditioning applications. The principles which determine the optimum design of such machines are reviewed and, in some cases...
Proc. ASME. IMECE2006, Process Industries, 79-84, November 5–10, 2006
Paper No: IMECE2006-13122
... 18 01 2008 The performance comparison of water as a refrigerant (R718) with some prevailing refrigerants including R717, R290, R134a, R12, R22, and R152a is presented. A computer program simulating an actual vapor compression refrigeration cycle including subcooling was developed...