{"id":{"repo_id":"vt","oai_identifier":"oai:vtechworks.lib.vt.edu:10919/74552"},"canonical_url":"https://search.dev.ndltd.org/etd/vt/oai:vtechworks.lib.vt.edu:10919/74552","repository":{"repo_id":"vt","name":"Virginia Tech","base_url":"https://vtechworks.lib.vt.edu/oai/request"},"display":{"title":"Heat transfer from a finned pin to the ambient air","abstract":"Extensive investigations employing fins as extended surfaces have been conducted, but relatively little experimental work has been conducted with pins, no information is available on the heat transfer characteristics of a pin and annular fin combination, i.e., a finned pin. The increased surface area of a finned pin would promote more heat transfer. In this thesis a theoretical investigation of the basic heat transfer characteristics of a finned pin, and an experimental investigation to verify the theoretical result were conducted. 1. Theoretical investigation consists of: (1) Optimum dimensions (2) Sample calculation of optimum dimensions (3) Derivation of heat transfer equations (4) Sample calculations of heat flow-rate and temperature distribution 2. Experimental investigation consists of: (1) Set-up of experimental equipment (2) Measurements of heat flow-rate and temperature distribution (3) Comparison of theoretical results with measured results 3. Conclusions: The conclusions were based on the comparison of the two-disc finned pin with the plain pin. (1) For the two-disc finned pin employed in this thesis: Increase in heat-flow-rate: 85% Increase of effectiveness: 61% (2) In general, the increase in heat flow-rate depends on the material, dimensions, temperature difference and spacing of annular fins.","abstract_html":"Extensive investigations employing fins as extended surfaces have been conducted, but relatively little experimental work has been conducted with pins, no information is available on the heat transfer characteristics of a pin and annular fin combination, i.e., a finned pin. The increased surface area of a finned pin would promote more heat transfer. In this thesis a theoretical investigation of the basic heat transfer characteristics of a finned pin, and an experimental investigation to verify the theoretical result were conducted. 1. Theoretical investigation consists of: (1) Optimum dimensions (2) Sample calculation of optimum dimensions (3) Derivation of heat transfer equations (4) Sample calculations of heat flow-rate and temperature distribution 2. Experimental investigation consists of: (1) Set-up of experimental equipment (2) Measurements of heat flow-rate and temperature distribution (3) Comparison of theoretical results with measured results 3. Conclusions: The conclusions were based on the comparison of the two-disc finned pin with the plain pin. (1) For the two-disc finned pin employed in this thesis: Increase in heat-flow-rate: 85% Increase of effectiveness: 61% (2) In general, the increase in heat flow-rate depends on the material, dimensions, temperature difference and spacing of annular fins.","abstract_has_math":false,"creators":["Hsieh, James Chen"],"institution":"Virginia Polytechnic Institute","degree_name":"Master of Science","degree_level":"masters","degree_discipline":"Mechanical Engineering","degree_department":"Mechanical Engineering","school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":1963,"date_issued":"1963","date_published":"1963","updated_at":"2026-07-22T22:20:27Z","subjects":[],"languages":["en_US"],"rights":["In Copyright"],"rights_urls":["http://rightsstatements.org/vocab/InC/1.0/"],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/10919/74552","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.department","label":"Department","values":["Mechanical Engineering"]},{"key":"dc:creator","label":"Author","values":["Hsieh, James Chen"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2017-01-30T21:03:02Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2017-01-30T21:03:02Z"]},{"key":"dc:date.issued","label":"Date","values":["1963"]},{"key":"dc:publisher","label":"Institution","values":["Virginia Polytechnic Institute"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]},{"key":"dc:type.dcmitype","label":"Dc Type Dcmitype","values":["Text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Mechanical Engineering"]},{"key":"thesis:degree_level","label":"Degree Level","values":["masters"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Science"]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["Virginia Polytechnic Institute"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["en_US"]},{"key":"dc:rights","label":"Dc Rights","values":["In Copyright"]},{"key":"dc:rights.uri","label":"Rights URI","values":["http://rightsstatements.org/vocab/InC/1.0/"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/10919/74552"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["Extensive investigations employing fins as extended surfaces have been conducted, but relatively little experimental work has been conducted with pins, no information is available on the heat transfer characteristics of a pin and annular fin combination, i.e., a finned pin. The increased surface area of a finned pin would promote more heat transfer. In this thesis a theoretical investigation of the basic heat transfer characteristics of a finned pin, and an experimental investigation to verify the theoretical result were conducted. 1. Theoretical investigation consists of: (1) Optimum dimensions (2) Sample calculation of optimum dimensions (3) Derivation of heat transfer equations (4) Sample calculations of heat flow-rate and temperature distribution 2. Experimental investigation consists of: (1) Set-up of experimental equipment (2) Measurements of heat flow-rate and temperature distribution (3) Comparison of theoretical results with measured results 3. Conclusions: The conclusions were based on the comparison of the two-disc finned pin with the plain pin. (1) For the two-disc finned pin employed in this thesis: Increase in heat-flow-rate: 85% Increase of effectiveness: 61% (2) In general, the increase in heat flow-rate depends on the material, dimensions, temperature difference and spacing of annular fins."]},{"key":"dc:description.degree","label":"Dc Description Degree","values":["Master of Science"]},{"key":"dc:format.mimetype","label":"Dc Format Mimetype","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Heat transfer from a finned pin to the ambient air"]}]}],"canonical_facts":{"dc:contributor.department":["Mechanical Engineering"],"dc:creator":["Hsieh, James Chen"],"dc:date.accessioned":["2017-01-30T21:03:02Z"],"dc:date.available":["2017-01-30T21:03:02Z"],"dc:date.issued":["1963"],"dc:description.abstract":["Extensive investigations employing fins as extended surfaces have been conducted, but relatively little experimental work has been conducted with pins, no information is available on the heat transfer characteristics of a pin and annular fin combination, i.e., a finned pin. The increased surface area of a finned pin would promote more heat transfer. In this thesis a theoretical investigation of the basic heat transfer characteristics of a finned pin, and an experimental investigation to verify the theoretical result were conducted. 1. Theoretical investigation consists of: (1) Optimum dimensions (2) Sample calculation of optimum dimensions (3) Derivation of heat transfer equations (4) Sample calculations of heat flow-rate and temperature distribution 2. Experimental investigation consists of: (1) Set-up of experimental equipment (2) Measurements of heat flow-rate and temperature distribution (3) Comparison of theoretical results with measured results 3. Conclusions: The conclusions were based on the comparison of the two-disc finned pin with the plain pin. (1) For the two-disc finned pin employed in this thesis: Increase in heat-flow-rate: 85% Increase of effectiveness: 61% (2) In general, the increase in heat flow-rate depends on the material, dimensions, temperature difference and spacing of annular fins."],"dc:description.degree":["Master of Science"],"dc:format.mimetype":["application/pdf"],"dc:identifier.uri":["http://hdl.handle.net/10919/74552"],"dc:language.iso":["en_US"],"dc:publisher":["Virginia Polytechnic Institute"],"dc:rights":["In Copyright"],"dc:rights.uri":["http://rightsstatements.org/vocab/InC/1.0/"],"dc:title":["Heat transfer from a finned pin to the ambient air"],"dc:type":["Thesis"],"dc:type.dcmitype":["Text"],"thesis:degree_discipline":["Mechanical Engineering"],"thesis:degree_level":["masters"],"thesis:degree_name":["Master of Science"],"thesis:institution_name":["Virginia Polytechnic Institute"]},"updated_at":"2026-07-22T22:20:27Z"}