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CFD evaluati.n of pressure drop across a 3-D fi.ter housi.g for i.dustri.l gas turbi.e plants

Fronti.rs i. Energy 2016年第2期10卷 192-202页

作者： fidelis i. abam Samuel O. EFFi.M Olayi.ka S. OHUNAKi. Department of Mechani.al Engi.eeri.g Michael Okpara University ofAgriculture Umudike Umuahia 02155 Nigeria Department of Mechani.al Engi.eeri.g Cross River University ofTechnology Calabar 540252 Nigeria Department of Mechani.al Engneeri.g Covenant Universiy Ota 11 O01Nigeria

Thi. paper i.vesti.ated the flow di.tri.uti.n and total pressure drop across a desi.ned 3-D fi.ter housi.g i.tegrated wi.h a 3-stage fi.trati.n system usi.g computa- ti.nal flui. dynami.s （CFD）. The fi.ter housi.g model was proposed for a heavy-duty i.dustri.l gas turbi.e plant operati.g at an average ambi.nt temperature of 20℃.The pressure drops across the classes of fi.ters were 652.8 Pa, 2692.2 Pa, 887.8 Pa, 776.2 Pa and 2304.2 Pa for i.GB, GB-GA, GA-FA, FA-HA, and HA-O, respecti.ely. The results obtai.ed i.di.ated an acceptable total pressure drop of 7.2% for the enti.e fi.ter housi.g before fi.ter clean-up. Although the CFD si.ulati.n result shows that small outlet flow veloci.y and transoni. flows exi.t at the outlet of the fi.ter housi.g, the desi.ned fi.ter housi.g was proved compati.le wi.h the studi.d GT, for i.let flow condi.i.ns between 600≤ Wai.≤610 kg/s and 60≤Vai.≤70 m/s for the ai. flow rate and veloci.y, respecti.ely. Furthermore, the desi.ned fi.ter housi.g could be adopted for the studi.d GT and locati.ns of Usan and Mai.uguri.i. Ni.eri., and other locati.ns wi.h si.i.ar envi.onmental condi.i.ns.

关键词： computati.nal flui. dynami.s (CFD) pressure drop flow di.tri.uti.n fi.ter housi.g gas turbi.e

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End-use energy uti.i.ati.n effi.i.ncy of Ni.eri.n resi.enti.l sector

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Fronti.rs i. Energy 2014年第3期8卷 322-334页

作者： fidelis i. abam Bethrand N. NWANKWOJi.E Ekwe B. EKWE Olayi.ka S. OHUNAKi. Department of Mechani.al Engi.eeri.g Micheal Okpara University of Agriculture Umudike 02155 Nigeria Department of Mechani.al Engi.eeri.g Covenant University Ogun State 11001 Nigeria

i. thi. paper, the end-use effi.i.nci.s of the di.ferent energy carri.rs and the overall energy effi.i.ncy i. the Ni.eri.n resi.enti.l sector （NRS） were esti.ated usi.g energy and exergy analysi.. The energy and exergy flows were consi.ered from 2006 to 2011. The overall energy effi.i.ncy ranges from 19.15% i. 2006 to 20.19% i. 2011 wi.h a mean of （19.96±0.23）% whi.e the overall exergy effi.i.ncy ranges from 4.34% i. 2006 to 4.40% i. 2011 wi.h a mean of （4.31±0.059）%. The energy and exergy effi.i.ncy margi. was 15.58% wi.h a margi.al i.provement of 0.07% and 0.02%, respecti.ely when compared wi.h previ.us results. The contri.uti.n of the energy carri.rs to the total energy and exergy i.puts were 1.45% and 1.43% for electri.i.y, 1.95% and 3% for fossi. fuel and 96.6% and 95.57% for bi.-fuel. The result shows that approxi.ately 65% of the resi.ence use wood and bi.mass for domesti. cooki.g and heati.g, and only a fracti.n of the resi.ence have access to electri.i.y. LPG was found to be the most effi.i.nt whi.e kerosene, charcoal, wood and other bi.mass the least i. thi. order. Electri.i.y uti.i.ati.n exergy effi.i.ncy i. affected by vapor-compressi.n ai. condi.i.ni.g appli.ati.n apart from low potenti.l energy appli.ati.ns. i. addi.i.n, thi. paper has suggested alternati.es i. the end-use appli.ati.n and has demonstrated the relevance of exergy analysi. i. enhanci.g sustai.able energy poli.i.s and management and i.proved i.tegrati.n techni.ues.

关键词： end-use energy exergy effi.i.ncy resi.enti.lsector Ni.eri.

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