MERAL Myanmar Education Research and Learning Portal
Item
{"_buckets": {"deposit": "7b743c72-d080-4396-bf1a-177ddebc3a7c"}, "_deposit": {"created_by": 155, "id": "7093", "owner": "155", "owners": [155], "owners_ext": {"displayname": "", "username": ""}, "pid": {"revision_id": 0, "type": "depid", "value": "7093"}, "status": "published"}, "_oai": {"id": "oai:meral.edu.mm:recid/00007093", "sets": ["user-mmu"]}, "communities": ["mmu"], "item_1583103067471": {"attribute_name": "Title", "attribute_value_mlt": [{"subitem_1551255647225": "Transient boiling critical heat flux on horizontal vertically oriented ribbon heater with treated surface condition in pool of water", "subitem_1551255648112": "en"}]}, "item_1583103085720": {"attribute_name": "Description", "attribute_value_mlt": [{"interim": "The deep understanding of transient pool boiling critical heat flux (CHF) phenomena with treated surface and its\ncorrelation in water at saturated and subcooled conditions are becoming increasingly important for the database\nfor the further enhancement of the design of liquid cooling technologies. Transient CHF using horizontal\ncylinders with different surfaces have been reported. However, there is a need to find the effect of surface\nwettability (contact angle) on transient CHF. This paper aims to study the steady and transient CHF due to\nexponentially increasing heat inputs,Q=Q0exp(t τ) , using horizontal vertically oriented platinum ribbon in a\npool of water with respect to pressure, subcooling, surface roughness and contact angle. The exponential period,\n , was varied from 5 ms to 10 s. We used three ribbon heaters with different surfaces, namely, commercial\nsurface (CS), treated surface I (TS-I) polished by buff paper together with alumina, and treated surface II (TS-II)\nfinished by emery paper. For the surface condition, surface roughness and contact angle of each ribbon were\nmeasured prior to pool boiling experiment. The acquired non-boiling heat transfer, steady and transient CHF\nwere evaluated with existing corresponding equations. The steady-state CHFs measured on the TS-I were tested\nwith the corresponding results of commercial surface. The three groups of transient CHF with different physical\nmechanisms, the enhancement of transient CHF in light of surface condition and transient CHF degradation\ndepending on pressure and subcooling were reported."}]}, "item_1583103108160": {"attribute_name": "Keywords", "attribute_value_mlt": [{"interim": "Transient critical heat flux"}, {"interim": "Ribbon"}, {"interim": "Surface roughness"}, {"interim": "Contact angle"}, {"interim": "Treated surface"}]}, "item_1583103120197": {"attribute_name": "Files", "attribute_type": "file", "attribute_value_mlt": [{"accessrole": "open_access", "displaytype": "preview", "download_preview_message": "", "file_order": 0, "filename": "", "future_date_message": "", "is_thumbnail": false, "licensetype": "license_0", "mimetype": "", "size": 0, "version_id": ""}]}, "item_1583103131163": {"attribute_name": "Journal articles", "attribute_value_mlt": [{"subitem_issue": "JSME", "subitem_journal_title": "JSME Mechanical Engineering Journal", "subitem_pages": "19 pages", "subitem_volume": "Vol.3, No.3, 2016"}]}, "item_1583105942107": {"attribute_name": "Authors", "attribute_value_mlt": [{"subitem_authors": [{"subitem_authors_fullname": "Min Han Htet"}]}]}, "item_1583108359239": {"attribute_name": "Upload type", "attribute_value_mlt": [{"interim": "Publication"}]}, "item_1583108428133": {"attribute_name": "Publication type", "attribute_value_mlt": [{"interim": "Journal article"}]}, "item_1583159729339": {"attribute_name": "Publication date", "attribute_value": "2016-01-25"}, "item_1583159847033": {"attribute_name": "Identifier", "attribute_value": "DOI: 10.1299/mej.15-00438"}, "item_title": "Transient boiling critical heat flux on horizontal vertically oriented ribbon heater with treated surface condition in pool of water", "item_type_id": "21", "owner": "155", "path": ["1608152094107"], "permalink_uri": "http://hdl.handle.net/20.500.12678/0000007093", "pubdate": {"attribute_name": "Deposited date", "attribute_value": "2020-12-29"}, "publish_date": "2020-12-29", "publish_status": "0", "recid": "7093", "relation": {}, "relation_version_is_last": true, "title": ["Transient boiling critical heat flux on horizontal vertically oriented ribbon heater with treated surface condition in pool of water"], "weko_shared_id": -1}
Transient boiling critical heat flux on horizontal vertically oriented ribbon heater with treated surface condition in pool of water
http://hdl.handle.net/20.500.12678/0000007093
http://hdl.handle.net/20.500.12678/000000709368d421ea-b94b-4e7c-bc58-cc1cf7db2568
7b743c72-d080-4396-bf1a-177ddebc3a7c
Name / File | License | Actions |
---|---|---|
![]() |
Publication type | ||||||
---|---|---|---|---|---|---|
Journal article | ||||||
Upload type | ||||||
Publication | ||||||
Title | ||||||
Title | Transient boiling critical heat flux on horizontal vertically oriented ribbon heater with treated surface condition in pool of water | |||||
Language | en | |||||
Publication date | 2016-01-25 | |||||
Authors | ||||||
Min Han Htet | ||||||
Description | ||||||
The deep understanding of transient pool boiling critical heat flux (CHF) phenomena with treated surface and its correlation in water at saturated and subcooled conditions are becoming increasingly important for the database for the further enhancement of the design of liquid cooling technologies. Transient CHF using horizontal cylinders with different surfaces have been reported. However, there is a need to find the effect of surface wettability (contact angle) on transient CHF. This paper aims to study the steady and transient CHF due to exponentially increasing heat inputs,Q=Q0exp(t τ) , using horizontal vertically oriented platinum ribbon in a pool of water with respect to pressure, subcooling, surface roughness and contact angle. The exponential period, , was varied from 5 ms to 10 s. We used three ribbon heaters with different surfaces, namely, commercial surface (CS), treated surface I (TS-I) polished by buff paper together with alumina, and treated surface II (TS-II) finished by emery paper. For the surface condition, surface roughness and contact angle of each ribbon were measured prior to pool boiling experiment. The acquired non-boiling heat transfer, steady and transient CHF were evaluated with existing corresponding equations. The steady-state CHFs measured on the TS-I were tested with the corresponding results of commercial surface. The three groups of transient CHF with different physical mechanisms, the enhancement of transient CHF in light of surface condition and transient CHF degradation depending on pressure and subcooling were reported. |
||||||
Keywords | ||||||
Transient critical heat flux, Ribbon, Surface roughness, Contact angle, Treated surface | ||||||
Identifier | DOI: 10.1299/mej.15-00438 | |||||
Journal articles | ||||||
JSME | ||||||
JSME Mechanical Engineering Journal | ||||||
19 pages | ||||||
Vol.3, No.3, 2016 |