Judul: Analysis Of Thermal Comfort Using Modern Building Material In Baduy Dalam House With Computational Fluid Dynamic
Abstrak: Eco-house is the applying of an ecological design on building. In Indonesia, Baduy Dalam community are examples of people who still have and perform local knowledge in their lifestyle including implementing ecological design in their homes. In this research, has been performed an analysis of thermal comfort in Baduy Dalam homes. The analysis had been performed by using three combinations of roof, wall and floor materials in Baduy Dalam’s house which are ceramic- brickceramic; concrete-brick- ceramic and asbestos cement-brick-ceramic. The analysis performed by a simulation techniques using a computer program Computational Fluid Dynamic (Solidworks 2011) to get a distribution model of air temperature, air movement, and relative humidity(RH) in the building. The input of environmental data such as temperature, RH, solar radiation, and wind speed used a 13 November 2010’s datas. The simulations carried out at 11:00, 13:00, 15:00, 19:00, 21:00, and 23:00. The simulation results of the most unsatisfied thermal comfort conditions using a combination 1 materials are; temperature 55.52°C, RH 20.71%, air flow 0.064 m/s, combination 2 are temperature 59.58°C, RH 17.10%, air flow 0.085 m/s, and combination 3 are; temperature 50.56°C, RH 24.14%, and air flow 0.065 m/s. The simulation results show that the worst conditions are combination 2 (concrete roof, brick walls and cement floor). The highest temperature is 59.58 ° C at 13:00. Modifications is made to the worst house condition by adding vents on the Baduy Dalam house and the results are temperature was -22.07°C lower at Imah and -22.24°C lower at Tepas.
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Judul: Pemodelan Pola Aliran Udara, Suhu, dan RH dengan Teknik Computational Fluid Dynamics (CFD pada Rumah Tradisional Baduy dan Modern di Desa Kanekes, Kabupaten Lebak, Banten
Abstrak: The house was the place for sheltering and living for human. Material election to build a house was depended by weather in the local area, social status, availability, and the economic capacity. As the changing of the time, people now more prefer to choose the material for their buildings by using bricks or concrete. This was caused people‟s paradigm in this time where the building conception in sub-urban area by using bricks or concrete as the material had social status and economic more higher than only use natural material. In fact, on the theory, building materials which contain difficult mass will save heat energy in large amount and release it in long time than light buildings material. The goal of this research was comparing the number of temperature, relative humidity, and airflow velocity inside Baduy‟s traditional house and modern house and simulates it with Computational Fluid Dynamics (CFD) technique. From the simulation result, we can compare the result between both of them. And the result of grating eventually compared with the level of comfort in both of those buildings. The steps of this research were taking data in field (temperature, RH, air velocity, and solar radiation) by condition in 1st scenario, 2nd scenario, and 3rd scenario. The 1st scenario was done with condition the back‟s door closed and the other door was open. It was measured on 06.00 am, 07.00 am, and the next one hour until 05.00 pm. The 2nd scenario was done on 06.30 am, 07.30 am, and the next one hour until 05.30 pm. And the last, the 3rd scenario was done on 06.00 pm until 05.00 am every one hour. As the measurement result which refer by the maximum standard of comfort temperature in tropical area based through CEP Brookes (Karyono 2001), in Modern house the temperature number which more than 29.4oC started from 11.00 am until 02.30 pm and in Baduy‟s house from 12.30 pm until 02.00 pm. The highest temperature in Modern and Baduy‟s house was 31.07oC and 30.17oC and it was happened at 1.30 pm. The error number for temperature from the result of CFD simulation in Baduy‟s and Modern house is 11.88% and 12.31% then the error for RH is 10.09% and 8.66. Simulation result showed that the highest temperature inside buildings at 12.00 pm. That was because the highest number of radiation at that time.
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Judul: Pengelolaan Ikan Napoleon (Cheilinus undulatus) Di Kepulauan Anambas (Studi Kasus di Kecamatan Siantan Tengah)
Abstrak: Penelitian ini bertujuan untuk: (1) Memetakan habitat perairan dangkal tempat larva ikan Napoleon di Siantan Tengah Kepulauan Anambas, (2) Menduga potensi dan pemanfaatan larva ikan Napoleon di Siantan Tengah Kepulauan Anambas (3) Menganalisis usaha budidaya ikan Napoleon di Anambas.(4) Menganalisis keberlanjutan kegiatan penangkapan dan budidaya ikan Napoleon dan (5) Menentukan Strategi pengelolaan Ikan Napoleon di Siantan Tengah. Hasil analisis pemetaan perairan dangkal di Siantan Tengah diperoleh luas habitat perairan dangkal yang dipetakan adalah 113.72 hektar. Kelas pasir mendominasi sebaran habitat yaitu sebesar 43.8% (49.77 hektar), diikuti oleh kelas makroalga sebesar 20.6% (23.39 hektar), kelas abiotik sebesar 17.6% (19.96 hektar), karang hidup sebesar 14.9% (16.94 hektar) dan lamun sebesar 3.2% (3.66 hektar), kecamatan ini merupakan pusat lokasi budidaya ikan Napoleon dan tempat pencarian larva atau benih di Kepulauan Anambas. Berdasarkan perhitungan dan pendugaan populasi potensi larva ikan Napoleon di Siantan Tengah terdapat 3 157 650 ekor dalam satu musim penangkapan dimana hasil tangkapan sebesar 30 ekor per 100 m2. Berdasarkan data perdagangan dan budidaya ikan Napoleon, pemanfaatan ikan ini hanya 10% dari potensi biomassa yang ada di Siantan Tengah 315.765 ekor dengan tingkat kematian 95% maka diperoleh benih sebesar 15 788.25 ekor. Hasil tangkapan juwana Napoleon dengan ukuran >0.5 Inci diperoleh rerata hasil tangkapan sebesar 28 perorang dalam 2 minggu musim penangkapan. Sehigga potensi juwana Napoleon yang tertangkap dalam satu musim adalah 9 628.95 ekor, dengan kepadatan 3 ekor per Ha, dengan luas daerah sargasum sebesar 23.39 Ha. Usaha Perikanan dan Budidaya ikan Napoleon di Siantan Tengah dikelompokan menjadi 3 kategori: (1) Pemeliharaan larva hingga berumur 1 Tahun, (2) Pemeliharaan Sementara 2-3 Tahun dan (3) Pemeliharaan Hingga Panen. Dari Analisis usaha budidaya Napoleon diperoleh keuntungan dimana nilai Net Benefit Cost Ratio (B/C) 1.41–1.47 dan PPC 0.17-0.39 yang berarti bahwa usaha ini layak untuk dijalankan karena memberikan keuntungan bagi nelayan budidaya ikan Napoleon. Pemanfaatan dan pengelolaan ikan Napoleon di Anambas dapat dilakukan dengan menerapkan kebijakan penanganan pasca tangkap untuk memperkecil nilai mortalitas larva ikan Napoleon, melatih dan meningkatkan pengetahuan nelayan budidaya secara intensip dan menjadikan kegiatan budidaya sebagai mata pencaharian nelayan, karena dari analisis RAPFISH keberlanjutan ikan Napoleon di Siantan Tengah masih dikategorikan berlanjut dengan nilai indek keberlanjutan 70.93
Keyword: Napoleon, RAPFISH, shallow water, Siantan Tengah, sustainable