Thermal conductivity bahasa gampangnya adalah banyaknya panas yang bisa dihantarkan oleh suatu bahan dalam ukuran dan satuan tertentu. Dari tabel diatas sudah klihatan bahwa tembaga lebih baek dari pada aluminiun.. dalam hal menghantarkan panas.. bisa juga berarti untuk mendapatkan peforma hantar panas yang sama aluminium memerlukan massa dalam satuan kg jauh lebih berat daripada tembaga...
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Fan
ane mau share tentang macam macam bearing.. atau klo istilah bengkel laher kipas
Sleeve bearings
adalah bearing yang bagian kontak atawa titik temu puterannya atau sehernya cuman dilapisin/dilumasi oli ato minyak. kelemahannya itu gak tahan suhu panas, daya tahannya terbatas karena olinya lama lama kering (bisa diatasi dengan semprotin minyak ke bagian kontaknya). Dan gak bagus klo posisi kipasnya ngadep ke atas ato bawah. Biasanya fan PC yang abal abal pake bearing jenis ini.
Spoiler for penjelasan inggrisnya:
use two surfaces lubricated with oil or grease as a friction contact. They often use porous sintered sleeves to be self-lubricating, requiring only infrequent maintenance or replacement. Sleeve bearings are less durable at higher temperatures as the contact surfaces wear and the lubricant dries up, eventually leading to failure; however, lifetime is similar at relatively low ambient temperatures. Sleeve bearings may be more likely to fail at higher temperatures, and may perform poorly when mounted in any orientation other than vertical. The lifespan of a sleeve-bearing fan may be around 40,000 hours at 50 °C. Fans that use sleeve bearings are generally cheaper than fans that use ball bearings, and are quieter at lower speeds early in their life, but can become noisy as they age.
Rifle bearings
hampir sama dengan sleeve bearing tapi ga se berisik sleeve bearing dan punya daya tahan atau masa pake yang lebih lama.
Spoiler for penjelasan inggrisnya:
are similar to sleeve bearings, but are quieter and have almost as much lifespan as ball bearings. The bearing has a spiral groove in it that pumps fluid from a reservoir. This allows them to be safely mounted with the shaft vertical (unlike sleeve bearings), since the fluid being pumped lubricates the top of the shaft.[6] The pumping also ensures sufficient lubricant on the shaft, reducing noise, and increasing lifespan.
Ball bearings
walopun lebih mahal dari fan sleeve bearing biasa tapi daya tahannya lebih lama dan lebih tahan terhadap suhu panas daripada sleeve bearing. Bahasa kitanya fan ball bearing tuh fan yang ada lahernya. untuk jelasnya bisa diliat di gambar dibawah ini. tapi harganya lebih mahal gan
Spoiler for penjelasan inggrisnya:
Though generally more expensive, ball bearing fans do not suffer the same orientation limitations as sleeve bearing fans, are more durable at higher temperatures, and are quieter than sleeve-bearing fans at higher rotation speeds. The lifespan of a ball bearing fan may be over 60,000 hours at 50 °C.[5]
Fluid bearings
fan ini lebih sunyi/sepi dari pada fan diatas apalagi sleeve bearing. (gambarnya lom nemu gan maap ya..)
Spoiler for penjelasan inggrisnya:
have the advantages of near-silent operation and high life expectancy (comparable to ball bearings), but tend to be the most expensive.
Magnetic bearings
yang ini fan yang paling keren gan. lahernya pake daya magnet.. biar lebih jelas yuk liat gambar dibawah.
Spoiler for penjelasan inggrisnya:
or maglev bearings, in which the fan is repelled from the bearing by magnetism.
sekian share dari ane smoga bermanfaat mohon maap klo berantakan gan.. oh ya ini kumpulan gambar. hasil browsing ane.