Effect of porous coating on critical heat flux removed by subcooled water at low flow rates


SCHROEDERRİCHTER D., Yildiz S.

FUSION TECHNOLOGY, cilt.29, ss.512-518, 1996 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 29 Konu: 4
  • Basım Tarihi: 1996
  • Doi Numarası: 10.13182/fst96-a30694
  • Dergi Adı: FUSION TECHNOLOGY
  • Sayfa Sayıları: ss.512-518

Özet

The critical heat flux (CHF) is studied experimentally in vertical tubes heated directly using power current (direct current 2500 A, 15 V) and cooled with water at a low mass flow rate (0 to 0.2 Mg/m(2) . s) and at low pressure (0.1 to 0.8 MPa). A smooth tube and a tube with a porous coating layer sintered onto the inner surface were used. The tube and the porous coating layer are both made from INCONEL-600. The results (so far at moderate heat fluxes) are compared with each other and with correlations by Katto and by Weber. Enhancement of heat transfer was determined as well as a negative effect of the porous coating below the expected value of CHF.