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Rabu, 28 Mei 2008

posting pertama : THERMAL FLUID HEATER

ABSTRACT



Water and steam are typically used as heat carriers in heating systems. But at high temperatures, water and steam requires a corresponding high operating pressure. In industrial heating systems, a high temperature level is often a great advantage and establishing this with water and steam can be very controversial and expensive.
In thermal oil heaters a special oil are used instead as the heat carrier, operating at atmospheric pressure up to 300°C. Comparing to water and steam, it would require a pressure of 85 bar to obtain this temperature. There are several advantages by using thermal oil compare to e.g. steam systems.

Thermal oil heaters are a real good and innovative solution for heat production in those industrial processes where high process temperatures are required. There are circumstances in which the use of a thermal fluid heater rather than a steam boiler is more suitable for heat production, usually to lower costs.
Applying basic radiation concepts to process-type heater design, Lobo & Evans developed a generally applicable rating method, that is followed with various modifications, by many heater designers. Reference Lobo & Evans, Heat Transfer in the Radiant Section of Petroleum Heaters, AICHE, Vol. 35, 1939.
Coil is commonly used where the duties are small. Selecting the heater tube material and size to use in a heater design is really a matter of experience. As designers work with different fired heaters for different services, designers develop a knowledge of what fit before in a similar design, so designer know where to start with a new design. But a few general rules can be used to start the selection.
In a thermal fluid heater, a gas or oil fired burner is mounted at one end of the heater and projects into the inner chamber. The hot gases radiate heat, which is absorbed by thermal fluid circulating through the coils. The hot fluid then circulates to one or several users before returning to the thermal fluid heater for reheating.
Process heat load requirement must be determined and remember to add at least 15 percent as a safety factor to make certain heater is not undersized.
Designers must choose the correct thermal fluid for specific operating conditions. The thermal fluid should be checked regularly to verify that it has retained its heat transfer properties.
A properly designed and installed thermal fluid heating system should give between 20 to 30 years of reliable service, but periodic maintenance is still necessary for safe and effective operation.

Keywords: Design; Oil heater; Coil; Temperature; Heat transfer

REFERENCES

Anonim. 2006. Industrial Diesel Oil. http://pertamina.com/. Indonesia.
Anonim. 2006. Thermal Fluid Heater Design. http://www.heaterdesign.com/. USA.
Anonim. 2006. Wikipedia, the free encyclopedia. http://en.wikipedia.org/. UK.
Djokosetyardjo, M.J. 2006. Ketel Uap. Jakarta: Pradnya Paramita.
Holman, J.P., terjemahan E. Jasjfi. 1995. Perpindahan Kalor. Jakarta: Erlangga.
Kern, D.Q. 1983. Process Heat Transfer. Japan: McGraw-Hill Book Company.
Kreith, Frank., terjemahan Arko Prijono. 1991. Prinsip-Prinsip Perpindahan Panas, Edisi Ketiga. Jakarta: Erlangga.
Leinhard, John. 2006. A Heat Transfer Text Book. Cambridge: Phlogiston Press.
Perry, R.H. 1976. Perry’s Chemical Engineer’s Handbook. USA: McGraw-Hill Book Company.
Satiadiwiria, M.Y. 1975. Termodinamika. Jakarta: Bina Aksara.
Zemansky, M.W., dan R.H. Dittman. 1982. Kalor dan Termodinamika. Bandung: Penerbit ITB.

38 komentar:

  1. numpang lewat... nuwun sewu

    BalasHapus
  2. Niliki postingan pertama he...he... kiye abstrak skripsine rika kang?

    BalasHapus
  3. @ Seno
    iya kang jaman ganu tambahi copas sithik hehehe ben keton apik..

    BalasHapus
  4. Artikel yang cukup bagus, walaupun saya gak gitu paham bahasa Inggrisnya. Saya mau tanya, apakah thermal fluid heater ini adalah semacam produk yang digunakan untuk kebutuhan industri (industrial needs)? Kebetulan saya baru mulai mempelajari dunia perindustrian. Trims.

    BalasHapus
  5. In general, the usefulness and significance is overwhelming. Very much thanks again and good luck and keep up the great work!

    BalasHapus
  6. Lewat sini kang. Pertama!! no 1st, no 2nd n more :D

    BalasHapus
  7. slm knl. postinga pertama memang paling mengesankan

    BalasHapus
  8. postinganya blog2nya keren gan, numpang mampir disini ;)

    BalasHapus
  9. postingan pertama ya.... wow keren...

    BalasHapus
  10. oh,,,ini postingan cikal bakal blog yang banyak pengunjung

    BalasHapus
  11. gan dah lama ya blog ini umurnya.

    BalasHapus
  12. senang lihat postingan pertama sahabat seperti ini

    BalasHapus
  13. Postingan pertama ya bang?

    BalasHapus
  14. Hahaha postingan pertama saya, postingan hasil copas, salut deh buat akang yang bisa nulis postingan bahasa inggris tanpa copas.

    BalasHapus
  15. cieee postingan pertama... udah tak baca gan

    BalasHapus
  16. Informasinya lua biasa sekali sangat bemanfaat... Banyaksekali peljaran yang saya dapatkan setelah saya berkunjung keblog ini...
    terimakasih banyak informasinya
    Semoga sukses selalu....

    BalasHapus
  17. terimakasih banyak atas informasnya...
    Saya mendapatkan pengetahuan yang begitu laur biasa sekali...
    semoga semakin sukses...

    BalasHapus
  18. hebat gan bahasa inggrisnya. mudah-mudahan bermanfaat untuk kita semua.

    BalasHapus
  19. Keren banget postingnya gan..

    BalasHapus
  20. haduh artikel pertam langsung pakei bahasa inggris ya.......ga bisa baca............

    BalasHapus
  21. wah, post pertama ternyata skripsi ya gan, hehe

    BalasHapus
  22. makasih banget infonyaa gan , jadi nambah pengetahuan

    BalasHapus

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