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dc.contributor.authorChunkaew, Phairoachen_US
dc.contributor.authorไพโรจน์ จันทร์แก้วen_US
dc.date.accessioned2022-04-24T07:15:06Z
dc.date.available2022-04-24T07:15:06Z
dc.date.issued2022-04-24
dc.identifier.issn2651-1096
dc.identifier.urihttp://repository.rmutp.ac.th/handle/123456789/3815
dc.descriptionวารสารวิชาการและวิจัย มทร.พระนคร, ปีที่ 15, ฉบับที่ 1 (ม.ค.-มิ.ย. 2564), หน้า 179-192en_US
dc.description.abstractThe purposes of this research were to develop and to test performance of mini heat pump dryer for slice banana. Drying chamber of 0.48×0.47×0.39 m3 was designed and it could contain three trays. The three trays had dimension of 0.33×0.409 m2. A blower with 174.6 W motor of air condition was modify and could adjust flow rates of three levels for air cycle system in dryer. The air system had bypass air at evaporator. The refrigerant of R-134a and four main parts were used in the heat pump system. The four main parts were a 497 W hermetic compressor, a 1,800 W condenser, an expansion valve and a 1,300 W evaporator. Experiments for test performance of the mini heat pump dryer used close loop air system, an evaporator bypass air of 60 %, a temperature of 60 oC and various flow rates of 0.117, 0.128 and 0.140 m3/s. Slide bananas of 400-500 g had an initial moisture content of 244-281 %dry basis and were dried until final moisture content lower than 6.24±0.007 %dry basis. It was found that the flow rates of 0.117, 0.128 and 0.140 m3/s had coefficients of performance (COPh) of 3.32±0.066, 3.88±0.031 and 4.24±0.08, respectively and had specific moisture extraction rates (SMER) of 184.5±11.85, 186.2±8.17 and 200.1±21.34 g/kWh, respectively. The flow rate at 0.140 m3/s was the best condition because it had high specific moisture extraction rate.en_US
dc.description.sponsorshipRajamangala University of Technology Phra Nakhonen_US
dc.language.isothen_US
dc.subjectDrying apparatusen_US
dc.subjectเครื่องอบแห้งen_US
dc.subjectDryingen_US
dc.subjectการอบแห้งen_US
dc.subjectBananasen_US
dc.subjectกล้วยen_US
dc.titleDevelopment and evaluation of mini heat pump dryer for slice bananaen_US
dc.title.alternativeการพัฒนาและประเมินผลเครื่องอบแห้งแบบปั๊มความร้อนขนาดเล็กสำหรับกล้วยน้ำว้าสไลด์en_US
dc.typeJournal Articlesen_US
dc.contributor.emailauthorphairoac@rmutl.ac.then_US
dc.contributor.emailauthorarit@rmutp.ac.then_US


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