scholarly journals EFFECT OF SOLUBLE ADDITIVES, BORIC ACID (H3BO3) AND SALT (NaCl), IN POOL BOILING HEAT TRANSFER

2011 ◽  
Vol 43 (3) ◽  
pp. 195-204 ◽  
Author(s):  
Sang-M. Kwark ◽  
Miguel Amaya ◽  
Hye-Jin Moon ◽  
Seung-M. You
Keyword(s):  
Heat Transfer ◽  
Boric Acid ◽  
Boiling Heat Transfer ◽  
Pool Boiling ◽  
Pool Boiling Heat Transfer

Pool Boiling Heat Transfer of Borated (H3BO3) Water on a Nanoporous Surface

2013 ◽  
Vol 135 (9) ◽  
Author(s):  
Miguel Amaya ◽  
Sang M. Kwark ◽  
Ajay Gurung ◽  
Seung M. You
Keyword(s):  
Heat Transfer ◽  
Boric Acid ◽  
Acid Deposition ◽  
Boiling Heat Transfer ◽  
Pure Water ◽  
Pool Boiling ◽  
Pressurized Water ◽  
Pool Boiling Heat Transfer ◽  
Borated Water ◽  
Nanoporous Surface

With regard to potential application in pressurized water reactors (PWRs), a nanoporous heated surface was tested in pool boiling of an aqueous solution of boric acid (H3BO3), or borated water (1% volume concentration). The effect of system pressure and surface orientation on pool boiling heat transfer (BHT) was studied. The nanoporous surface consisted of a coating of alumina nanoparticles applied on a 1 cm2 flat copper surface through nanofluid boiling. An uncoated surface in borated water was similarly tested, and due to boric acid deposition, the BHT degraded and the critical heat flux (CHF) enhanced relative to pure water. Also, the possibility of transient pool boiling behavior of borated water was investigated but none was detected. With pressure and orientation variation, the nanoporous surface imposed on borated water showed a trend of further CHF enhancement to the CHF limit produced by the nanoporous surface in pure water. Over the nanoporous surface, the CHF of borated water was increasingly better with decreasing pressure, than that over the plain surface. However, BHT degraded slightly further. Boric acid deposition over the nanoporous surface was believed to be the source of this BHT degradation, but played no apparent role in the further CHF enhancement.

Pool Boiling Heat Transfer of Borated (H3BO3) Water on a Nanoporous Surface

2012 ◽  
Author(s):  
Miguel Amaya ◽  
Sang M. Kwark ◽  
Ajay Gurung ◽  
Seung M. You
Keyword(s):  
Heat Transfer ◽  
Boric Acid ◽  
Acid Deposition ◽  
Boiling Heat Transfer ◽  
Pure Water ◽  
Pool Boiling ◽  
Pressurized Water ◽  
Pool Boiling Heat Transfer ◽  
Borated Water ◽  
Nanoporous Surface

With regard to potential application in pressurized water reactors (PWRs), a nanoporous heated surface was tested in pool boiling of an aqueous solution of boric acid (H3BO3), or borated water (1% volume concentration). The effect of different system pressures and different surface orientations on pool boiling heat transfer was studied. The nanoporous surface consisted of a coating of alumina nanoparticles applied on a 1 cm2 flat copper surface through nanofluid boiling. An uncoated surface in borated water was similarly tested, and due to boric acid deposition, the boiling heat transfer (BHT) degraded and the critical heat flux (CHF) enhanced relative to pure water. Also, the possibility of transient pool boiling behavior of borated water was investigated but none was detected. For all pressures and orientations, the nanoporous surface further enhanced the CHF of borated water to the CHF produced by the nanoporous surface in pure water. Over the nanoporous surface, the CHF of borated water was increasingly better with decreasing pressure, than that over the plain surface. However, BHT degraded slightly further. Boric acid deposition over the nanoporous surface was believed to be the source of this BHT degradation, but played no apparent role in the further CHF enhancement.

Nucleate Pool Boiling Heat Transfer in Microgravity

1998 ◽  
Vol 29 (1-3) ◽  
pp. 196-207
Author(s):  
Haruhiko Ohta ◽  
Koichi Inoue ◽  
Suguru Yoshida ◽  
Tomoji S. Morita
Keyword(s):  
Heat Transfer ◽  
Boiling Heat Transfer ◽  
Pool Boiling ◽  
Nucleate Pool Boiling ◽  
Pool Boiling Heat Transfer

SOME PROBLEMES ON POOL BOILING HEAT TRANSFER

1970 ◽  
Author(s):  
V. I. Subbotin ◽  
D. N. Sorokin ◽  
A.A, Tsiganok
Keyword(s):  
Heat Transfer ◽  
Boiling Heat Transfer ◽  
Pool Boiling ◽  
Pool Boiling Heat Transfer
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