?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Karakteristik+Perpindahan+Panas+di+Ventilasi+Berisi%0D%0AMaterial+Berubah+Fasa+untuk+Aplikasi+Ruangan%0D%0A%0D%0ASejuk+pada+Proses+Pembekuan&rft.creator=CARLOS+CARLES+TURNIP%2C+1415021027&rft.subject=600+Teknologi+(ilmu+terapan)&rft.subject=620+Ilmu+teknik+dan+ilmu+yang+berkaitan&rft.description=Bangunan+memiliki+kontribusi+besar+terhadap+konsumsi+energi.+Air%0D%0Aconditioner+(AC)+adalah+faktor+terbesar+dalam+penggunaan+energi+listrik.%0D%0AKonsep+free+cooling+mempunyai+perhatian+khusus+untuk+mengurangi+jam%0D%0Aoperasi+dan+kapasitas+yang+dibutuhkan+pada+sistem+pendingin+konvensional.%0D%0AFree+cooling+didapat+dengan+cara+mengumpulkan+udara+dingin+pada+malam%0D%0Ahari+pada+penyimpanan+energi+termal+dan+melepaskan+udara+dingin+pada%0D%0Asiang+hari.%0D%0A%0D%0APhase+change+material+(PCM)+adalah+contoh+media+penyimpanan+dalam%0D%0Akonsep+free+cooling.+PCM+memiliki+densitas+energi+yang+besar%2C+jarak%0D%0Atemperatur+penyerapan+dan+pelepasan+yang+berdekatan.+Parafin+adalah+PCM%0D%0Ayang+bersifat+tidak+korosif%2C+sifat+kimia+stabil%2C+ketersediannya+banyak.%0D%0APenelitian+dilakukan+pada+2+model+ventilasi+dengan+ukuran+15cmx15cm+yang%0D%0Aberisikan+PCM+berbahan+aluminium+hollow+dan+mengondisikan+temperatur%0D%0A%0D%0Audara+masuk+18oC%2C+20oC%2C+22oC+dengan+laju+aliran+udara+1m%2Fs%2C+2m%2Fs%2C+3m%2Fs%0D%0Auntuk+mengetahui+laju+pendingan+PCM+pada+masing-masing+percobaan.%0D%0A%0D%0AHasil+penelitian+menunjukkan+bahwa+laju+pendinginan+PCM+terbesar+adalah%0D%0A0%2C173oC%2Fmenit+didapat+pada+temperatur+udara+masuk+18oC+dengan+laju+udara%0D%0A3m%2Fs+pada+ventilasi+model+1+diikuti+ventilasi+model+2+dengan+laju+pendinginan%0D%0A0%2C155oC%2Fmenit+didapat+pada+temperatur+udara+masuk+18oC+dengan+laju+udara%0D%0A3m%2Fs.%0D%0APengaruh+geometri+ventilasi%2C+penurunan+temperatur+udara+masuk%2C+dan%0D%0Apeningkatan+laju+aliran+udara+berpengaruh+terhadap+laju+pendinginan+PCM.%0D%0A%0D%0AKata+kunci+%3A+free+cooling%2C+PCM%2C+ventilasi%0D%0ABuildings+have+a+major+contribution+to+energy+comsumption.+Air+conditioner+is%0D%0Aresponsible+for+most+of+energy+use+in+buildings.+Free+cooling+of+buildings+have%0D%0Amuch+attention+to+reduce+the+operation+hours+and+capacity+of+conventional%0D%0Acooling.+Free+cooling+could+be+provided+by+collecting+natural+cold+energy+during%0D%0Anight+time+in+appropriate+thermal+storage+form+and+this+could+be+retrieved+when%0D%0Aneeded.+Phase+change+materials+are+storage+medium+in+free+cooling+applications%2C%0D%0Abecause+have+high+energy+densities%2C+and+absorb+and+release+heat+at+a+narrow%0D%0Atemperature+range.+Paraffin+are+PCM+non+corrosives%2C+stable+chemical+reaction%2C%0D%0Aavailable+from+many+manufactures.%0D%0A%0D%0AThis+research+use+2+models+of+ventilations+made+by+hollow+aluminium+with%0D%0Adimensions+15cm+x15cm+was+filled+with+PCM+and+conditioned+the+temperature%0D%0Ainlet+18oC%2C+20oC%2C+22oC+with+velocity+of+air+1m%2Fs%2C+2m%2Fs%2C+3m%2Fs+to+know+cooling+rate%0D%0Aof+PCM.+The+result+show+largest+of+cooling+rate+of+PCM+is+0%2C173oC%2Fmin+provided%0D%0A%0D%0Aon+temperature+inlet+18oC+and+velocity+of+air+3m%2Fs+on+model+ventilation+1+while%0D%0Amodel+2+ventilation+has+cooling+rate+of+PCM+0%2C155oC%2Fmin+on+temperature+inlet%0D%0A18oC+and+velocity+of+air+3m%2Fs.+effect+geometry+of+ventilation%2C+decrease+of%0D%0Atemperature+inlet+and+increase+velocity+of+air+influence+cooling+rate+of+PCM.%0D%0A%0D%0AKeywords%3A+free+cooling%2C+PCM%2C+ventilation.&rft.publisher=FAKULTAS+TEKNIK&rft.date=2019&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F57209%2F1%2FABSTRAK.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F57209%2F2%2FSKRIPSI%2520FULL.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F57209%2F3%2FSKRIPSI%2520TANPA%2520BAB%2520PEMBAHASAN.pdf&rft.identifier=++CARLOS+CARLES+TURNIP%2C+1415021027++(2019)+Karakteristik+Perpindahan+Panas+di+Ventilasi+Berisi+Material+Berubah+Fasa+untuk+Aplikasi+Ruangan+Sejuk+pada+Proses+Pembekuan.++FAKULTAS+TEKNIK%2C+UNIVERSITAS+LAMPUNG.+++++&rft.relation=http%3A%2F%2Fdigilib.unila.ac.id%2F57209%2F