Experimental Study of Onset of Nucleate Boiling in Vertical Rectangular Channels with Different Flow Path Heights
A study on ONB (onset of nucleate boiling) in two vertical rectangular channels are experimentally conducted in a range of mass flux varying from 100 to 300 kg/(m2·s), inlet water temperature from 70 to 100°C, heat flux from 10 to 70 kW/m2, and local pressure of 0.145 MPa. The cross-section sizes ar...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2022-01-01
|
| Series: | Science and Technology of Nuclear Installations |
| Online Access: | http://dx.doi.org/10.1155/2022/7760569 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832553683191070720 |
|---|---|
| author | Ning Cheng Shuwen Yu Jun Xiao Chang-Hong Peng |
| author_facet | Ning Cheng Shuwen Yu Jun Xiao Chang-Hong Peng |
| author_sort | Ning Cheng |
| collection | DOAJ |
| description | A study on ONB (onset of nucleate boiling) in two vertical rectangular channels are experimentally conducted in a range of mass flux varying from 100 to 300 kg/(m2·s), inlet water temperature from 70 to 100°C, heat flux from 10 to 70 kW/m2, and local pressure of 0.145 MPa. The cross-section sizes are 1.8 mm ∗ 60 mm and 2.8 mm ∗ 60 mm, respectively. Three boiling incipience judgment methods have been used to locate ONB sites and found that ΔTONB (the wall superheat at ONB site) increases with the decrease of inlet temperature and increases as mass flux increases. The results also indicate that although the bubble size and behaviors in the narrow channel are different from that in the nonnarrow channel at the ONB site, the heat transfer has not been influenced evidently. In addition, ΔTONB in both channels can be predicted by the correlation proposed by Thom within the error range of ±30%. |
| format | Article |
| id | doaj-art-684235cc9ddc43c18e17406bfa10fae0 |
| institution | Kabale University |
| issn | 1687-6083 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Science and Technology of Nuclear Installations |
| spelling | doaj-art-684235cc9ddc43c18e17406bfa10fae02025-02-03T05:53:27ZengWileyScience and Technology of Nuclear Installations1687-60832022-01-01202210.1155/2022/7760569Experimental Study of Onset of Nucleate Boiling in Vertical Rectangular Channels with Different Flow Path HeightsNing Cheng0Shuwen Yu1Jun Xiao2Chang-Hong Peng3School of Nuclear Science and TechnologySchool of Nuclear Science and TechnologyNuclear and Radiation Safety CenterSchool of Nuclear Science and TechnologyA study on ONB (onset of nucleate boiling) in two vertical rectangular channels are experimentally conducted in a range of mass flux varying from 100 to 300 kg/(m2·s), inlet water temperature from 70 to 100°C, heat flux from 10 to 70 kW/m2, and local pressure of 0.145 MPa. The cross-section sizes are 1.8 mm ∗ 60 mm and 2.8 mm ∗ 60 mm, respectively. Three boiling incipience judgment methods have been used to locate ONB sites and found that ΔTONB (the wall superheat at ONB site) increases with the decrease of inlet temperature and increases as mass flux increases. The results also indicate that although the bubble size and behaviors in the narrow channel are different from that in the nonnarrow channel at the ONB site, the heat transfer has not been influenced evidently. In addition, ΔTONB in both channels can be predicted by the correlation proposed by Thom within the error range of ±30%.http://dx.doi.org/10.1155/2022/7760569 |
| spellingShingle | Ning Cheng Shuwen Yu Jun Xiao Chang-Hong Peng Experimental Study of Onset of Nucleate Boiling in Vertical Rectangular Channels with Different Flow Path Heights Science and Technology of Nuclear Installations |
| title | Experimental Study of Onset of Nucleate Boiling in Vertical Rectangular Channels with Different Flow Path Heights |
| title_full | Experimental Study of Onset of Nucleate Boiling in Vertical Rectangular Channels with Different Flow Path Heights |
| title_fullStr | Experimental Study of Onset of Nucleate Boiling in Vertical Rectangular Channels with Different Flow Path Heights |
| title_full_unstemmed | Experimental Study of Onset of Nucleate Boiling in Vertical Rectangular Channels with Different Flow Path Heights |
| title_short | Experimental Study of Onset of Nucleate Boiling in Vertical Rectangular Channels with Different Flow Path Heights |
| title_sort | experimental study of onset of nucleate boiling in vertical rectangular channels with different flow path heights |
| url | http://dx.doi.org/10.1155/2022/7760569 |
| work_keys_str_mv | AT ningcheng experimentalstudyofonsetofnucleateboilinginverticalrectangularchannelswithdifferentflowpathheights AT shuwenyu experimentalstudyofonsetofnucleateboilinginverticalrectangularchannelswithdifferentflowpathheights AT junxiao experimentalstudyofonsetofnucleateboilinginverticalrectangularchannelswithdifferentflowpathheights AT changhongpeng experimentalstudyofonsetofnucleateboilinginverticalrectangularchannelswithdifferentflowpathheights |