Testing of a Condensation-type Heat Pump System for Low-temperature Drying Applications

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dc.authoridAKTAS, MUSTAFA/0000-0003-1187-5120
dc.authoridGurel, Ali Etem/0000-0003-1430-8041
dc.contributor.authorAktas, Mustafa
dc.contributor.authorCeylan, Ilhan
dc.contributor.authorGurel, Ali Etem
dc.date.accessioned2024-09-29T16:06:13Z
dc.date.available2024-09-29T16:06:13Z
dc.date.issued2014
dc.departmentKarabük Üniversitesien_US
dc.description.abstractA closed-type water source heat pump dryer integrated with a drying programme (DP) was designed and tested. The DP was developed using psychometric conditions of desired drying air and thermodynamic balance of heat pump. A drying algorithm was developed according to the technical specification of the dryer. Drying air temperature, relative humidity and drying air volumetric flow rate were entered from a programmable logic controller (PLC) screen. In this study, the drying of mint leaves was examined. Mint leaves were dried at different temperatures (35 degrees C, 40 degrees C and 45 degrees C) and at different volumetric flow rates 300 m(3)/h for a velocity of 0.75 m/s and 600 m(3)/h for a velocity of 1.5 m/s in the PLC-controlled heat pump dryer. The relative humidity of the drying air entering the dryer chamber was kept between 13.88% and 6.81% and the two air dampers were controlled according to predetermined value. The coefficient of performance (COPhp) values obtained were between 3.81 and 2.29. The specific moisture extraction rate for the whole system (SMERws) was between the 0.034 and 0.044 kg/kWh. The drying air temperatures were controlled with an accuracy of +/- 0.41 degrees C to +/- 0.76 degrees C depending on the mode of operation.en_US
dc.identifier.doi10.1515/ijfe-2014-0124
dc.identifier.endpage531en_US
dc.identifier.issn2194-5764
dc.identifier.issn1556-3758
dc.identifier.issue3en_US
dc.identifier.scopus2-s2.0-84907671848en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.startpage521en_US
dc.identifier.urihttps://doi.org/10.1515/ijfe-2014-0124
dc.identifier.urihttps://hdl.handle.net/20.500.14619/6711
dc.identifier.volume10en_US
dc.identifier.wosWOS:000341564500018en_US
dc.identifier.wosqualityQ4en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherWalter De Gruyter Gmbhen_US
dc.relation.ispartofInternational Journal of Food Engineeringen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectdryingen_US
dc.subjectdrying programmeen_US
dc.subjectminten_US
dc.subjectheat pumpen_US
dc.subjectdehumidificationen_US
dc.titleTesting of a Condensation-type Heat Pump System for Low-temperature Drying Applicationsen_US
dc.typeArticleen_US

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