?url_ver=Z39.88-2004&rft_id=1415021008&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=KARAKTERISTIK+PERPINDAHAN+PANAS+MINYAK+KELAPA+%0D%0ASEBAGAI+MATERIAL+BERUBAH+FASA+PADA%0D%0AALAT+PENUKAR+KALOR&rft.creator=AJI+MUHAMMAD+YULIAN%2C+1415021008&rft.subject=620+Ilmu+teknik+dan+ilmu+yang+berkaitan&rft.description=Konsumsi+energi+listrik+pada+bangunan+di+Indonesia+sebagian+besar+berasar+dari+%0D%0Asistem+pengkondisian+udara+dengan+pemakaian+%C2%B1+50%25+dari+total+keseluruhan+%0D%0Akonsumsi+energi+bangunan.+Salah+satu+cara+untuk+mengurangi+kebutuhan+konsumsi+%0D%0Alistrik+pada+pengkondisian+udara+adalah+dengan+menggunakan+sistem+penyimpan+%0D%0Atermal+(termal+storage).+Penelitian+ini+bertujuan+untuk+mengetahui+laju+pendinginan+%0D%0Aminyak+kelapa+sebagai+PCM+dan+mengetahui+kemampuan+minyak+kelapa+melepas+%0D%0Atermal+pada+alat+penukar+kalor+jenis+double+helix+coil+dan+staggered+fins.%0D%0APenelitian+ini+dilaksanakan+di+Laboratorium+Termodinamika%2C+jurusan+Teknik+%0D%0AMesin%2C+Universitas+Lampung.+Adapun+waktu+pelaksanaan+penelitian+ini+dimulai+%0D%0Apada+bulan+November+2018%E2%80%93+Juni+2019.+Phase+Change+Material+(PCM)+yang+%0D%0Adigunakan+adalah+minyak+kelapa+dengan+menggunakan+alat+penukar+kalor+%0D%0Astaggered+fins+dan+double+helix+coil+serta+dengan+memvariasikan+kecepatan+aliran+%0D%0Audara+dan+temperatur+inlet+Hasil+penelitian+menunjukan+bahwa+(1)+Pada+alat+penukar+kalor+double+helix+coil%2C+%0D%0Alaju+pendinginan+dipengaruhi+oleh+kecepatan+aliran+udara+dan+temperatur+inlet%2C+%0D%0Aseperti+pada+kecepatan+4+m%2Fs+dan+inlet+16%C2%B0C+diketahui+memiliki+laju+pendinginan+%0D%0Asebesar+21%2C5x10-3%0D%0A%C2%B0C%2Fmenit+selama+tiga+jam+dan+energi+kalor+yang+mampu+dilepas+%0D%0APCM+sebesar+419%2C67+kJ%2C+dan+(2)+Pada+alat+penukar+kalor+tipe+staggered+fins%2C+%0D%0Asemakin+tinggi+kecepatan+udara+berbanding+lurus+dengan+laju+pendinginan+seperti+%0D%0Apada+kecepatan+3+m%2Fs+diketahui+laju+pendinginan+sensibel+sebesar+0%2C892+%C2%B0C%2Fmenit+%0D%0Aselama+5%2C6+menit+sedangkan+total+energi+kalor+yang+mampu+dilepas+PCM+selama%0D%0A60+menit+sebesar+158%2C35+kJ+dengan+konsentrasi+padatan+yang+terjadi+sebesar%0D%0A76%2C22%25.%0D%0AKata+kunci%3A+material+berubah+fasa%2C+PCM%2C+penyimpan+termal%0D%0A%0D%0A%0D%0AElectricity+consumption+of+buildings+in+Indonesia+is+largely+based+on+air+%0D%0Aconditioning+systems+with+usage+of+%C2%B1+50%25+from+the+total+energy+consumption+of+%0D%0Abuildings.+One+way+to+reduce+electricity+consumption+requirements+for+air+%0D%0Aconditioning+is+to+used+thermal+storage+systems+(thermal+storage).+This+study+aims+%0D%0Ato+determine+the+cooling+rate+of+coconut+oil+as+PCM+and+determine+the+ability+of+%0D%0Acoconut+oil+to+release+thermal+on+double+helix+coil+heat+exchanger+and+staggered+%0D%0Afins.%0D%0AThis+research+was+conducted+at+the+Thermodynamics+Laboratory%2C+Department+of+%0D%0AMechanical+Engineering%2C+Lampung+University.+The+timing+of+this+research+begins+%0D%0Ain+November+2018+-+June+2019.+The+Phase+Change+Material+(PCM)+used+is+coconut+%0D%0Aoil+by+using+staggered+fins+heat+exchanger+and+double+helix+coil+as+well+as+by+%0D%0Avarying+the+air+flow+rate+and+inlet+temperature.The+results+showed+that+(1)+In+the+double+helix+coil+heat+exchanger%2C+the+cooling+rate+%0D%0Ais+influenced+by+the+air+flow+velocity+and+inlet+temperature%2C+such+as+at+a+speed+of%0D%0A4m%2Fs+and+inlet+16+%C2%B0C+known+to+have+a+cooling+rate+of+21%2C5x10-3%0D%0A%C2%B0C%2Fmenit+for+three%0D%0Ahours+and+the+heat+energy+that+can+be+released+by+PCM+is+419.67+kJ%2C+and+(2)+In+a+%0D%0Astaggered+fins+type+heat+exchanger%2C+the+higher+the+air+velocity+is+proportional+to+the+%0D%0Acooling+rate+as+at+the+speed+of+3+m%2Fs.+amounting+to+0.892+%C2%B0+C%2Fminute+for+5.6+minutes+%0D%0Awhile+the+total+heat+energy+that+can+be+released+by+PCM+for+60+minutes+is+158.35+kJ%0D%0Awith+a+solid+concentration+that+occurs+at+76.22%25.%0D%0AKeywords%3A+phase+change+material%2C+PCM%2C+thermal+storage%0D%0A%0D%0A&rft.publisher=FAKULTAS+TEKNIK&rft.date=2019-07-09&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F56963%2F1%2FABSTRAK.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F56963%2F2%2FSKRIPSI%2520FULL.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F56963%2F3%2FSKRIPSI%2520TANPA%2520BAB%2520PEMBAHASAN.pdf&rft.identifier=++AJI+MUHAMMAD+YULIAN%2C+1415021008++(2019)+KARAKTERISTIK+PERPINDAHAN+PANAS+MINYAK+KELAPA+SEBAGAI+MATERIAL+BERUBAH+FASA+PADA+ALAT+PENUKAR+KALOR.++FAKULTAS+TEKNIK%2C+UNIVERSITAS+LAMPUNG.+++++&rft.relation=http%3A%2F%2Fdigilib.unila.ac.id%2F56963%2F