35 KB783 KB16 KB199920252007Can, AhmetGalović, AntunŽivić, Marijaštevilka:3letnik:537 stranistr. 158-164ISSN:0039-2480COBISSID:10182171URN:URN:NBN:SI:doc-FB9H48UOenAssociation of Mechanical Engineers and Technicians of Slovenia et al.Zveza strojnih inženirjev in tehnikov Slovenije et al.Strojniški vestnikenergijska bilancamatematični modelitoplotni menjalnikiEnergijska in eksergijska analiza sotočnih in protitočnih prenosnikov toplote z uporabo merilnih podatkov| Energy and exergy analysis of a parallel and counter-flow heat exchangers using measured data|This paper presents an energy and exergy analysis of a parallel and counter-flow recuperative heat exchangers using experimental data. An experimental rig was constructed to measure the inlet and outlet temperatures and the mass flow rates of streams. The analytical model was developed to obtain a non-dimensional relationship between the destroyed exergy and exchanged heat-flow rate as a function of the non-dimensional parameters of a heat exchangerČ the ratio of inlet absolute temperatures, pT, the ratio of theheat-capacity rates, p3, and the number of heat-transfer units, p2. The effectiveness of the heat exchange is also calculated for each case. The results are shown in appropriate non-dimensional diagramsPrispevek podaja energijsko in eksergijsko analizo sotočnih in protitočnih ločilnih prenosnikov toplote z uporabo marilnih podatkov. Sestavili smo merilno progo, na kateri smo merili vstopne in izstopne temperature in masni tok vode. Za določitev brezrazsežnega razmerja izgubljene eksergije in prenesenega toplotnega toka v odvisnosti od brezrazsežnih parametrov prenosnika toplote: razmerja absolutnih temperatur na vstopu pT, razmerja toplotnih moei p3 in stevila enot prenosnika toplote p2, smo razvili analitični model. Za vse primere smo izračunali tudi učinkovitost prenosa toplote. Rezultate smo prikazali v ustreznih brezrazsežnih diagramihTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaUniverza v Ljubljani, Fakulteta za strojništvo