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Imanuel Stevie
"ABSTRAK
Cooling Degree Days ( CDD ) merupakan salah satu cara untuk mengestimasi kebutuhan energi melalui fluktuasi temperatur udara luar. Studi ini menghitung CDD berdasarkan base temperature 20, 22 dan 24°C dalam rentang waktu 2001-2010, perhitungan menggunakan data dry blub temperature udara luar dari stasiun BMKG Halim dan Tanjung Priok. Metode perhitungan menggunakan metode Mean Degree Hours untuk Tanjung Priok dan Mean daily temperature untuk Halim. Hasil perhitungan, analisis hubungan antara CDD dengan Energi, serta perbandingan antara CDD pada daerah Tanjung Priok, Halim, Kemayoran, Cengkareng, dan Pondok Betung disajikan dalam skripsi ini.

ABSTRACT
Cooling Degree Days is one of the ways to estimate the energy requirement through the outside air temperature fluctuations. This studies is to calculate CDD with temperature base 20, 22, and 24°C in Tanjung Priok and Halim area with range 2001-2010 year. This calculation use outdoor dry bulb temperature which data take from BMKG Tanjung Priok and Halim. Method of calculation using mean degree hours method for Tanjung Priok and mean daily temperature method for Halim. The result of this calculation, CDD-energy relation analysis, and comparison between CDD in Tanjung Priok, Halim, Kemayoran, Pondok Betung, and Cengkareng presented in this paper."
2012
S43330
UI - Skripsi Open  Universitas Indonesia Library
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Asep Wahyu Hidayat
"ABSTRAK
Cooling Degree Days ( CDD ) merupakan salah satu cara untuk mengestimasi kebutuhan energi melalui fluktuasi temperatur udara luar. Studi ini menghitung CDD berdasarkan base temperature20, 22 dan 24 oC dalam rentang waktu 2001 - 2010, perhitungan menggunakan data dry blub temperature udara luar dari stasiun BMKG Halim dan Pondok Betung. Metode perhitungan menggunakan metode Mean daily temperature .Hasil perhitungan dan analisis hubungan antara CDD dengan energi disajikan dalam skripsi ini.

Cooling Degree Days is one of the ways to estimate the energi requirement through the outside air temperature fluctuations. This studi is to calculate CDD with temperature base 20, 22, and 24oC in Kemayoran and Pondok Betung area with range 2001-2010 year. This calculation use outdoor dry bulb temperature which data take from BMKG Halim and Pondok Betung. Method of calculation using mean daily temperature method. The result of this calculation present in this paper."
2012
S54528
UI - Skripsi Open  Universitas Indonesia Library
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Rina Muthia Harahap
"[ABSTRAK
Kebakaran hutan dan lahan merupakan permasalahan kompleks yang terjadi di
Provinsi Riau setiap tahun. Pemicunya berasal dari faktor alami dan akibat aktivitas
manusia. Penelitian ini menggunakan variabel hotspots (titik panas) sebagai
indikasi adanya kebakaran hutan dan lahan yang dihasilkan oleh sensor satelit
NOAA (National Oceanic and Atmospheric Administration) akibat kenaikan suhu
di atas 315° K atau 42°C pada luasan 1 km2. Hotspots yang tersebar diseluruh
Provinsi Riau dianalisis kepadatannya sepanjang tahun 2005 hingga 2014
menggunakan perhitungan Kernel Density. Hasilnya pola spasial kepadatan
hotspots terkonsentrasi di Kota Dumai, Kabupaten Rokan Hilir, Bengkalis dan
Pelalawan. Sedangkan pola temporal menunjukkan jumlah hotspots terbanyak
selama 10 tahun terjadi pada bulan Juni hingga Agustus. Kemudian sebaran
kepadatan hotspots dihubungan dengan faktor-faktor pemicu terjadinya kebakaran
yakni curah hujan bulanan, sebaran dan kedalaman gambut serta jenis penggunaan
lahan. Hasil analisis menunjukkan jumlah hotspots terbanyak tersebar pada wilayah
dengan curah hujan bulanan rendah yaitu 50 - 150 mm/bulan dan pada lahan gambut
dengan kedalaman lebih dari 4 meter (sangat dalam) serta pada jenis penggunaan
lahan perkebunan, hutan lahan basah sekunder dan semak belukar. Selanjutnya
penentuan ambang batas hari tanpa hujan sehubungan kemunculan hotspots
diperoleh melalui teknik buffering sejauh 10 km dari stasiun-stasiun pengamatan
hujan setiap hari selama bulan Juni hingga Agustus. Analisis pada setiap
kemunculan hotspots juga dikaitkan dengan kedalaman gambut dan jenis
penggunaan lahan untuk mengetahui karakteristik setiap area buffer, hasilnya
ambang batas hari tanpa hujan dalam kaitan kemunculan hotspots di Provinsi Riau
adalah 3 hari.

ABSTRACT
Land and forest fires are complex problems that occurred in the province of Riau
every year. The trigger factors comes from natural and human activities. This
research uses a variable hotspots as an indication of land and forest fires produced
by the satellite sensors NOAA (National Oceanic and Atmospheric Administration)
due to the temperature rise above 315 °K or 42° C on an area of 1 km2. The density
of hotspots are scattered throughout the province of Riau 2005 to 2014 analyzed
using Kernel Density calculations. The result patterns of spatial density of hotspots
concentrated in Dumai, Rokan Hilir, Bengkalis and Pelalawan. While the time
pattern showed the highest number of hotspots for 10 years occurred in June until
August. Then the distribution of the density of hotspots related with the factors that
trigger fires such as monthly rainfall, distribution and depth of the peatland and the
type of land use. The analysis showed the highest number of hotspots spread out on
an area with a low monthly precipitation is 50-150 mm / month and on peatlands
with a depth of more than 4 meters (very deep) as well as on the type of plantation
land use, wetlands secondary forest and shrubs. Furthermore, the determination of
threshold no rain day due to the hotspots appearance obtained through buffering
technique as far as 10 km from rain gauge stations every day during the month of
June to August. Analysis on each occurrence of hotspots is also associated with the
depth of peat and types of land use to determine the characteristics of each buffer
area, the result of the threshold of no rainy days in relation to the hotspot appearance
in Riau Province is 3 days.;Land and forest fires are complex problems that occurred in the province of Riau
every year. The trigger factors comes from natural and human activities. This
research uses a variable hotspots as an indication of land and forest fires produced
by the satellite sensors NOAA (National Oceanic and Atmospheric Administration)
due to the temperature rise above 315 °K or 42° C on an area of 1 km2. The density
of hotspots are scattered throughout the province of Riau 2005 to 2014 analyzed
using Kernel Density calculations. The result patterns of spatial density of hotspots
concentrated in Dumai, Rokan Hilir, Bengkalis and Pelalawan. While the time
pattern showed the highest number of hotspots for 10 years occurred in June until
August. Then the distribution of the density of hotspots related with the factors that
trigger fires such as monthly rainfall, distribution and depth of the peatland and the
type of land use. The analysis showed the highest number of hotspots spread out on
an area with a low monthly precipitation is 50-150 mm / month and on peatlands
with a depth of more than 4 meters (very deep) as well as on the type of plantation
land use, wetlands secondary forest and shrubs. Furthermore, the determination of
threshold no rain day due to the hotspots appearance obtained through buffering
technique as far as 10 km from rain gauge stations every day during the month of
June to August. Analysis on each occurrence of hotspots is also associated with the
depth of peat and types of land use to determine the characteristics of each buffer
area, the result of the threshold of no rainy days in relation to the hotspot appearance
in Riau Province is 3 days.;Land and forest fires are complex problems that occurred in the province of Riau
every year. The trigger factors comes from natural and human activities. This
research uses a variable hotspots as an indication of land and forest fires produced
by the satellite sensors NOAA (National Oceanic and Atmospheric Administration)
due to the temperature rise above 315 °K or 42° C on an area of 1 km2. The density
of hotspots are scattered throughout the province of Riau 2005 to 2014 analyzed
using Kernel Density calculations. The result patterns of spatial density of hotspots
concentrated in Dumai, Rokan Hilir, Bengkalis and Pelalawan. While the time
pattern showed the highest number of hotspots for 10 years occurred in June until
August. Then the distribution of the density of hotspots related with the factors that
trigger fires such as monthly rainfall, distribution and depth of the peatland and the
type of land use. The analysis showed the highest number of hotspots spread out on
an area with a low monthly precipitation is 50-150 mm / month and on peatlands
with a depth of more than 4 meters (very deep) as well as on the type of plantation
land use, wetlands secondary forest and shrubs. Furthermore, the determination of
threshold no rain day due to the hotspots appearance obtained through buffering
technique as far as 10 km from rain gauge stations every day during the month of
June to August. Analysis on each occurrence of hotspots is also associated with the
depth of peat and types of land use to determine the characteristics of each buffer
area, the result of the threshold of no rainy days in relation to the hotspot appearance
in Riau Province is 3 days.;Land and forest fires are complex problems that occurred in the province of Riau
every year. The trigger factors comes from natural and human activities. This
research uses a variable hotspots as an indication of land and forest fires produced
by the satellite sensors NOAA (National Oceanic and Atmospheric Administration)
due to the temperature rise above 315 °K or 42° C on an area of 1 km2. The density
of hotspots are scattered throughout the province of Riau 2005 to 2014 analyzed
using Kernel Density calculations. The result patterns of spatial density of hotspots
concentrated in Dumai, Rokan Hilir, Bengkalis and Pelalawan. While the time
pattern showed the highest number of hotspots for 10 years occurred in June until
August. Then the distribution of the density of hotspots related with the factors that
trigger fires such as monthly rainfall, distribution and depth of the peatland and the
type of land use. The analysis showed the highest number of hotspots spread out on
an area with a low monthly precipitation is 50-150 mm / month and on peatlands
with a depth of more than 4 meters (very deep) as well as on the type of plantation
land use, wetlands secondary forest and shrubs. Furthermore, the determination of
threshold no rain day due to the hotspots appearance obtained through buffering
technique as far as 10 km from rain gauge stations every day during the month of
June to August. Analysis on each occurrence of hotspots is also associated with the
depth of peat and types of land use to determine the characteristics of each buffer
area, the result of the threshold of no rainy days in relation to the hotspot appearance
in Riau Province is 3 days.;Land and forest fires are complex problems that occurred in the province of Riau
every year. The trigger factors comes from natural and human activities. This
research uses a variable hotspots as an indication of land and forest fires produced
by the satellite sensors NOAA (National Oceanic and Atmospheric Administration)
due to the temperature rise above 315 °K or 42° C on an area of 1 km2. The density
of hotspots are scattered throughout the province of Riau 2005 to 2014 analyzed
using Kernel Density calculations. The result patterns of spatial density of hotspots
concentrated in Dumai, Rokan Hilir, Bengkalis and Pelalawan. While the time
pattern showed the highest number of hotspots for 10 years occurred in June until
August. Then the distribution of the density of hotspots related with the factors that
trigger fires such as monthly rainfall, distribution and depth of the peatland and the
type of land use. The analysis showed the highest number of hotspots spread out on
an area with a low monthly precipitation is 50-150 mm / month and on peatlands
with a depth of more than 4 meters (very deep) as well as on the type of plantation
land use, wetlands secondary forest and shrubs. Furthermore, the determination of
threshold no rain day due to the hotspots appearance obtained through buffering
technique as far as 10 km from rain gauge stations every day during the month of
June to August. Analysis on each occurrence of hotspots is also associated with the
depth of peat and types of land use to determine the characteristics of each buffer
area, the result of the threshold of no rainy days in relation to the hotspot appearance
in Riau Province is 3 days.;Land and forest fires are complex problems that occurred in the province of Riau
every year. The trigger factors comes from natural and human activities. This
research uses a variable hotspots as an indication of land and forest fires produced
by the satellite sensors NOAA (National Oceanic and Atmospheric Administration)
due to the temperature rise above 315 °K or 42° C on an area of 1 km2. The density
of hotspots are scattered throughout the province of Riau 2005 to 2014 analyzed
using Kernel Density calculations. The result patterns of spatial density of hotspots
concentrated in Dumai, Rokan Hilir, Bengkalis and Pelalawan. While the time
pattern showed the highest number of hotspots for 10 years occurred in June until
August. Then the distribution of the density of hotspots related with the factors that
trigger fires such as monthly rainfall, distribution and depth of the peatland and the
type of land use. The analysis showed the highest number of hotspots spread out on
an area with a low monthly precipitation is 50-150 mm / month and on peatlands
with a depth of more than 4 meters (very deep) as well as on the type of plantation
land use, wetlands secondary forest and shrubs. Furthermore, the determination of
threshold no rain day due to the hotspots appearance obtained through buffering
technique as far as 10 km from rain gauge stations every day during the month of
June to August. Analysis on each occurrence of hotspots is also associated with the
depth of peat and types of land use to determine the characteristics of each buffer
area, the result of the threshold of no rainy days in relation to the hotspot appearance
in Riau Province is 3 days., Land and forest fires are complex problems that occurred in the province of Riau
every year. The trigger factors comes from natural and human activities. This
research uses a variable hotspots as an indication of land and forest fires produced
by the satellite sensors NOAA (National Oceanic and Atmospheric Administration)
due to the temperature rise above 315 °K or 42° C on an area of 1 km2. The density
of hotspots are scattered throughout the province of Riau 2005 to 2014 analyzed
using Kernel Density calculations. The result patterns of spatial density of hotspots
concentrated in Dumai, Rokan Hilir, Bengkalis and Pelalawan. While the time
pattern showed the highest number of hotspots for 10 years occurred in June until
August. Then the distribution of the density of hotspots related with the factors that
trigger fires such as monthly rainfall, distribution and depth of the peatland and the
type of land use. The analysis showed the highest number of hotspots spread out on
an area with a low monthly precipitation is 50-150 mm / month and on peatlands
with a depth of more than 4 meters (very deep) as well as on the type of plantation
land use, wetlands secondary forest and shrubs. Furthermore, the determination of
threshold no rain day due to the hotspots appearance obtained through buffering
technique as far as 10 km from rain gauge stations every day during the month of
June to August. Analysis on each occurrence of hotspots is also associated with the
depth of peat and types of land use to determine the characteristics of each buffer
area, the result of the threshold of no rainy days in relation to the hotspot appearance
in Riau Province is 3 days.]"
2016
UI - Tesis Membership  Universitas Indonesia Library
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Helmi Dadang Ardiansyah
"Ice Slurry adalah sebuat teknologi langka di Indonesia. Bentuk dan proses pembuatan yang sangat unik membuat ice slurry mempunyai kelebihan diantara es dan air. Dalam aplikasinya sudah mulai banyak diterapkan sebagai pendingin gedung dan pendingin ikan nelayan. Indonesia adalah negara maritime sehingga mata pencaharian nelayan sangat banyak. Namun mata pencaharian tersebut tidak populer karena pendapatan yang kecil. Banyak hal yang dapat dilakukan untuk meningkatkan perekonomian nelayan salah satunya penerapan ice slurry sebagai media pendingin ikan.
Tujuan dari penelitian ini adalah mengetahui karakteristik ice slurry berbahan dasar air laut dengan variasi salinitas. Variasi salinitas yang digunakan maksimum 30 ppt, 26 ppt, 22 ppt dan 18 ppt. Untuk pengujian dilakukan pada alat scraper ice slurry generator karena hasil fraksi es yang lebih besar. Temperatur fan condenser, rpm motor, dan volume beban sama untuk semua variasi. Selain itu juga dilakukan variasi beban evaporator dari sistem pendingin.
Hasilnya adalah salinitas rendah lebih menghasilkan fraski es dibanding salinitas tinggi, namun terdapat es balok pada hasil ice slurry. Enthapi terendah pada salinitas rendah sedangkan viskositas dan konduktivitas termal tertinggi di salinitas terendah. Kesimpulan ini didukung oleh variasi beban evaporator yang menunjukkan hasil sama untuk kalor 1.718 kW dan 2.947 kW.

Ice Slurry is a rare technology in Indonesia. Shape and procces ice slurry is unique, so ice slurry have many advantages between ice and water for cooling system. Ice slurry application has been applied as building cooling and fish cooling. Indonesia is maritime country so many people work as fisher. But actually that job now isn?t popular because small income. Many effort to increase economic of Indonesia fisher, the one of solution is ice slurry as fish cooling in above their ship.
The purpose from this research is to know characteristic of ice slurry based on sea water with salinity variant. The variations are 30 ppt, 26 ppt, 22 ppt and 18 ppt. The experiment used scraper ice slurry genearator because result of ice fraction is bigger than the others. Temperature fan in condenser, rpm motor, and volume are same every experiment. The others variation is evaporator load with same parameter.
The result in low salinity produced big fraction es compare with high salinity, but in the result ice slurry contain ice beam. Conclutsion from calculated of result ice slurry is low enthapy on low salinity, the big value of viscous and conductivity thermal on low salinity. The conclusion has supported with variation of load evaporator that presented result as trend as for 1.718 kW and 2.947 kW.
"
Depok: Fakultas Teknik Universitas Indonesia, 2012
S42071
UI - Skripsi Open  Universitas Indonesia Library
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Abdul Manan Aruli, examiner
"Proyek PLTU Tanjung Balai Karimun 2x7 MW merupakan salah satu proyek dalam program 10000 MW yang dicanangkan pemerintah. Pada tahap konstruksi ditemukan permasalahan pembangunan sistem pendingin PLTU tersebut yang menggunakan tipe once through-Intake channel disebabkan kondisi dasar laut yang dangkal dan relatif panjang, sehingga dibutuhkan biaya relatif besar. Studi ini bertujuan untuk mencari solusi yang paling optimal untuk menyelesaikan masalah tersebut dengan mempertimbangkan aspek biaya, kemudahan konstruksi, kemudahan operasi dan pemeriharaan, dan kemudahan perijinan. Analisis dilakukan terhadap 5 alternatif desain yaitu once through – intake channel, once through – intake piping, once through – offshore pumphouse, closedloop sea water cooling tower, dan closed-loop fresh water cooling tower. Hasil studi menunjukkan bahwa alternatif yang paling optimal adalah merubah desain pendinginan menjadi closed-loop menggunakan sea water cooling tower.

Tanjung Balai Karimun 2 x 7 MW PLTU project is one of the projects in the 10,000 MW program launched by the Government. At the construction stage, problems were found in building the PLTU cooling system which uses the once through-intake channel type due to the shallow and relatively long seabed conditions, so it required relatively large costs. This study aims to find the most optimal solution to solve this problem by considering aspects of cost, ease of construction, ease of operation and maintenance, and ease of licensing. Analysis was carried out on 5 design alternatives, namely single-through inlet pipe, single-through inlet pipe, single-through offshore pump house, closed-loop seawater cooling tower, and closed-loop freshwater cooling tower.The study results show that the most optimal alternatif is to change the cooling design to closed-loop using a sea water cooling tower."
Depok: Fakultas Teknik Universitas Indonesia, 2023
PR-pdf
UI - Tugas Akhir  Universitas Indonesia Library
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Fadhil Azharrisman
"Penelitian ini membahas mengenai perancangan dan perhitungan palka ikan untuk kapal ikan 30 GT menggunakan kapal yang dirancang khusus. Pada penelitian ini pendinginan palka ikan menggunakan sistem refrigerasi untuk mengoptimalkan volume ruangan palka karena, dalam pengoperasiannya palka berpendingin es membutuhkan 50% dari kapasitas ruang palka untuk memuat es. Dalam penelitian ini, dilakukan studi literatur guna menentukkan parameter perhitungan, desain geometrik palka, dan dilakukan simulasi CFD menggunakan Ansys Fluent untuk menilai bentuk aliran fluida pendingin dan waktu pendinginan produk, lalu dilanjutkan dengan perhitungan beban pendinginan dan kebutuhan daya listrik yang dibutuhkan untuk sistem pendingin yang telah dirancang. Berdasarkan hasil simulasi didapatkan waktu pendinginan paling cepat terjadi ketika kecepatan inlet fluida pendingin 8 m/s pada kapasitas pemuatan 100% dengan waktu pendinginan ikan dari 27°C sampai 0°C membutuhkan waktu selama 4 jam 15 menit, serta kebutuhan daya total untuk sisterm refrigerasi yaitu 5,88 kW.

This study discusses the design and calculation of fish hold for 30 GT fishing vessels using specially designed vessels. In this study, fish hold cooling uses a refrigeration system to optimize the volume of the hold because, in its operation, the ice-cooled hatch requires 50% of the capacity of the hold to load ice. In this study, a literature study was conducted to determine the calculation parameters, geometric design of the hold, and a CFD simulation was carried out using Ansys Fluent to review the shape of the cooling fluid flow and product cooling time then continued with the calculation of the cooling load and the electrical power required for the cooling system has been designed. Based on the simulation results, the fastest cooling time occurs when the cooling fluid inlet velocity is 8 m/s at a loading capacity of 100% with a cooling time of fish from 27°C to 0°C which takes 4 hours 15 minutes, as well as the total power requirement for the refrigeration system is 5.88 kW."
Depok: Fakultas Teknik Universitas Indonesia, 2021
S-pdf
UI - Skripsi Membership  Universitas Indonesia Library
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Cheremisinoff, Nicholas P.
Ann Arbor, Mich.: Ann Arbor Science, 1981
621.197 CHE c
Buku Teks  Universitas Indonesia Library
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Rivaldo Garchia
"Seperti kita ketahui, Indonesia memiliki banyak sumber energi yang dapat dimanfaatkan sebagai bahan bakar pembangkit listrik, antara lain Energi Air, Energi Surya, Energi Angin, Energi Panas Bumi dan Energi Gas. Pembangkit listrik tenaga gas memiliki banyak keunggulan dari energi yang laiinnya karena tidak bergntung pada kondisi cuaca seperti angin, intensitas cahaya atau laju aliran air. Potensi gas alam indonesia sebagai sumber bahan bakar Pembangkit Listrik Tenaga Gas (PLTG) sangat melimpah.
Menurut studi badan geologi kementerian Energi dan Sumber Daya Alam (ESDM), potensi gas alam yang ada di Indonesia pada tahun 2008 saja mencapai 170 TSCF, dengan komposisi tersebut Indonesia memiliki reserve to production (R/P) mencapai 59 tahun ke depan. Pembangkit listrik tenaga gas memiliki efisiensi yang cukup rendah akibat temperatur gas buang yang masih tinggi. Efisiensi dapat ditingkatkan dengan memanfaatkan sistem pendingin untuk menaikkan efisiensi kerjanya. Namun apabila pembangkit tersebut telah dibuat dengan siklus kombinasi menjadi gas dan uap maka ada sistem pendingin menjadi kurang optimum karena gas buangnya sudah terpakai sebagai sumber panas HRSG.
Dalam penelitian ini temperatur udara masuk gas diturunkan hingga temperatur 15o C. Untuk penurunan temperatur ambient hingga 150C terjadi kenaikan daya output turbin gas sebesar 15,14 MW dan kenaikan efisiensi themal siklus sebesar 3,9 %. Sumber panas yang didapatkan generator chiller berasal dari HRSG dengan laju aliran massa steam sebesar 6,37 kg/s. Hal ini mengakibatkan penurunan daya output turbin uap berkurang sebesar 3,27 MW. Akan tetapi, dengan adanya sistem pendingin pada absorption chiller ini daya output yang dihasilkan oleh turbin gas meningkat sebesar 11,87 MW.

As we know, Indonesia has many sources of energy that can be used as fuel for power generation, among others, Air Energy, Solar Energy, Wind Energy, Geothermal Energy and Energy Gas. Gas power plants have many advantages of energy because it does not bergntung laiinnya on weather conditions such as wind, light intensity or rate of water flow. The potential of Indonesian natural gas as a fuel source Gas Power Plant (power plant) is very abundant.
According to the study of geological bodies Ministry of Energy and Natural Resources (EMR), the potential of natural gas in Indonesia in 2008 alone reached 170 TSCF, with the composition of Indonesia has a reserve to production (R / P) reached 59 years into the future. Gas power plants have a fairly low efficiency due to the exhaust gas temperature is still high. Efficiency can be improved by utilizing the cooling system to increase its efficiency. However, if the plant has been made with a combined cycle gas and steam into the existing cooling system becomes less optimal because the exhaust gas has been used as a heat source HRSG.
In this study the gas intake air temperature is reduced to a temperature of 15°C. To decrease ambient temperatures of up to 150C an increase in power output of 15.14 MW gas turbine and an increase in efficiency of 3.9% themal cycles. The heat source is obtained chiller generator comes from HRSG with steam mass flow rate of 6.37 kg / s. This resulted in a decrease in the steam turbine output power is reduced by 3.27 MW. However, the presence of the absorption chiller cooling system's power output generated by gas turbines increased by 11.87 MW.
"
Depok: Fakultas Teknik Universitas Indonesia, 2015
S59273
UI - Skripsi Membership  Universitas Indonesia Library
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Muhammad Hafil Nugraha
"Dalam suatu siklus kondenser perpendingin air, air pendingin kondenser menyerap panas dari fenomena kondensasi refrijeran. Air pendingin tersebut perlu didinginkan kembali menggunakan sistem menara pendingin.Terdapat dua jenis menara pendingin evaporatif yakni sistem terbuka dan tertutup. Dari kedua jenis menara pendingin ini terdapat perbedaan unjuk kerja yang perlu ditinjau. Unjuk kerja suatu menara pendingin bergantung pada nilai efektifitas, bilangan NTU, dan kapasitas pendinginan yang dihasilkan.Untuk menara pendingin terbuka eksperimen dilakukan dengan menggunakan paking di dalam menara dan tidak menggunakan paking (non-paking) pada menara pendingin tertutup digunakan penukar kalor berupa koil dengan susunan bersilangan dengan diameter 3/8 inchi, yang memiliki jalur parallel.Peninjauan terhadap perbedaan unjuk kerja antara dua jenis menara pendingin perlu dilakukan dengan membandingkan hasil dari percobaan.

In water cooled condenser, heat from the process of refrigerant condensation absorbed by cooling water. Cooling tower used to dissipate heat from water cooled refrigeration. There are two basic types of evaporative cooling devices. The first of these, the direct contact or open cooling tower. The second is indirect contact or closed-circuit cooling tower.The comparison perfomance between type of cooling tower must be known. Perfomance of cooling tower depends from the effectiveness, Number Transfer Unit (NTU), and cooling capacity.Experiment in open cooling tower doing with packing inside and non-packing. In closed cooling tower used the heat exchanger coils (tube bundle) with stagerred line and 3/8 inch diameter with multipath (parallel path)."
Depok: Fakultas Teknik Universitas Indonesia, 2013
S53338
UI - Skripsi Membership  Universitas Indonesia Library
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Salsabila Almira Raissa
"Film Better Days (少年的你) merupakan film adaptasi dari novel In His Youth, In Her Beauty (少年的你,如此美丽) karya Jiu Yuexi yang rilis pada 25 Oktober 2019. Film ini berkisah tentang seorang siswi SMA tingkat akhir bernama Chennian yang merupakan korban perundungan dari Weilai, Luoting, dan Xumiao dalam persiapan untuk mengikuti ujian Gaokao. Chennian menjadi korban perundungan karena ia merupakan lawan tangguh dalam ujian Gaokao. Weilai merupakan seorang perundung yang digambarkan sebagai generasi muda Cina yang berusaha meraih kesuksesan masa mudanya dalam mengikuti ujian Gaokao. Penelitian ini bertujuan untuk menganalisis penokohan Weilai sebagai representasi generasi muda Cina dalam persiapan mengikuti ujian Gaokao. Metode yang digunakan dialah metode kualitatif. Hasil penelitian menunjukkan adanya hubungan antara tekanan ujian Gaokao dan penokohan Weilai. Hal tersebut dapat dilihat melalui tiga hubungan antara Weilai dengan teman-teman. Dengan adanya pembuktian tersebut dapat disimpulkan bahwa terdapat sisi lain dari perjuangan pelajar Cina dalam mengejar kesuksesan yang menodai semangat mulia ujian Gaokao.

Better Days (少年的你) is a film adaptation of the novel In His Youth, In Her Beauty (少 年的你,如此美丽) by Jiu Yuexi which was released on October 25, 2019. This film is about a final year high school student named Chennian. who was the victim of bullying from Weilai, Luoting, and Xumiao in preparation for the Gaokao exam. Chennian became a victim of bullying because she was a tough opponent in the Gaokao exam. Weilai is a bully who is described as a young generation of China who is trying to achieve success in her youth in taking the Gaokao exam. This study aims to analyze the characterization of Weilai as a representation of the Chinese young generation in preparation for taking the Gaokao exam. The method used is a qualitative method. The results showed that there was a relationship between Gaokao test pressure and Weilai's characterization. This can be seen through the three relationships between Weilai and friends. With this evidence, it can be concluded that there is another side to the struggle of Chinese students in pursuing success that tarnishes the noble spirit of the Gaokao exam."
Depok: Fakultas Ilmu Pengetahuan Budaya Universitas Indonesia, 2022
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