29 /08 /08 08:46:10 Rangkuman DiskusiMenghitung Flow Refigeran Pada Kompressor
Flow refrigerant pada suatu system refrigerasi tergantung dari kondisi operasi (seperti evap temp, cond. temp, derajat subcool, derajat superheat,jenis refrigerant, dll). Bapak harus tahu kondisi design dari sistim tersebut, atau lebih akurat dapat langsung ambil data dari sistim yang sudah running. Kalo design benar, biasanya data design dan actual tidak berbeda jauh. Manufacture compressor untuk refrigeration system punya software untuk mengetahui kapasitas pendinginan dan data2 yg lain (seperti data flow refrigerant dan temperature keluar kondensor). Kita tinggal memasukkan data evap. temp, cond. temp, type compressor yg dipakai, dan data lain yg diperlukan. Software bisa di download dari website (kalo menyediakan) atau minta langsung ke manufacturer.
Saya mau pasang transmitter yang jaraknya cukup jauh sekitar 300 meter dari DCS, apakah sinyal 4 - 20 mA nya masih bisa keterima dengan baik di DCS nya atau tidak? atau apakah saya perlu penguat sinyal agar sinyal bisa keterima dengan baik di DCS. Kira2 berapa yach panjang kabel yang di ijinkan untuk sinyal 4-20mA.
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Dubai oil retailers - Emirates National Oil Company (Enoc), Emirates Petroleum Products Company (Eppco) and Emarat - plant to cut diesel prices at the pumps by 50 fils a gallon effective September 1, marking their sixth straight cut in prices in a little more than a month, reported Gulf News. A spokesman for Enoc and Eppco said the price of diesel will be cut to Dhs16.25 per gallon from Dhs16.75 per gallon from Monday. [ Lanjut .. ]
Jordan to buy French nuclear reactor
Jordan plans to buy a nuclear reactor from a French company soon, reported Jordan Times, citing comments by Prime Minister Nader Dahabi during a meeting with Olivier Jarde, the head of Jordanian-French Parliamentary Friendship Committee. The two countries signed a nuclear co-operation agreement on 30 May. [ Lanjut .. ]
Oil rises for third day
Crude oil rose for a third day in New York on concern that Hurricane Gustav may enter the Gulf of Mexico. Crude oil for October delivery rose as much as 63 cents, or 0.5 percent, to 6.90 a barrel on the New York Mercantile Exchange. [ Lanjut .. ]
Kuwait to boost oil capacity
Kuwait aims to pump 3 million barrels per day of crude oil in the first half of 2009, up from around 2.5 million barrels per day at present, reported Reuters. Kuwait is sticking to the production target of 2.53 million bpd set by Opec and has about 200,000 bpd to 300,000 bpd of spare capacity. [ Lanjut .. ]
Dubai diesel price cut in 5th time
Dubai oil retailers - Emirates National Oil Company, Emirates Petroleum Products Company and Emarat have reduced the price of diesel at the pumps by 50 fils a gallon yesterday, Gulf News has reported. This is the fifth straight cut in less than a month. [ Lanjut .. ]
