{"id":3492,"date":"2021-04-09T16:27:06","date_gmt":"2021-04-09T09:27:06","guid":{"rendered":"https:\/\/dbm.com.vn\/product\/uncategorized\/linear-heat-conduction-experiment\/"},"modified":"2021-06-11T10:40:07","modified_gmt":"2021-06-11T03:40:07","slug":"linear-heat-conduction-experiment","status":"publish","type":"product","link":"https:\/\/dbm.com.vn\/en\/product\/linear-heat-conduction-experiment\/","title":{"rendered":"Linear Heat Conduction Experiment"},"content":{"rendered":"<p><em><span style=\"text-decoration: underline;\">Key Features:<\/span><\/em><\/p>\n<ul>\n<li>\u00a0<span class=\"fontstyle0\">One of four optional experiments for the Heat Transfer Experiments Base Unit (TD1002)<\/span><\/li>\n<li><span class=\"fontstyle0\">Fits quickly and easily onto the Heat Transfer Experiments Base Unit and water connections have self-sealing quick connectors \u2013 needs no tools<\/span><\/li>\n<li><span class=\"fontstyle0\">Shows the principles of linear heat conduction along a rod of uniform diameter<\/span><\/li>\n<li><span class=\"fontstyle0\">Clear schematic printed on the baseplate aids student understanding<\/span><\/li>\n<li><span class=\"fontstyle0\">Allows the thermal conductivity of various materials to be measured<\/span><\/li>\n<li><span class=\"fontstyle0\">Safe, low-voltage heater with over-temperature cut-out<\/span><\/li>\n<\/ul>\n<p><em><span style=\"text-decoration: underline;\">Description:<\/span><\/em><\/p>\n<ul>\n<li>\u00a0<span class=\"fontstyle0\">This experiment has a solid brass bar of circular crosssection, made in two sections with an interchangeable <\/span><span class=\"fontstyle0\">middle section. It mounts on a base plate with a clear schematic of the experiment layout. The first brass section<br \/>\nincludes two thermocouples and the electric heater (heat source). The second brass section includes a small water-cooled chamber (heat sink) and two more thermocouples. The interchangeable middle sections (supplied) are of<br \/>\ndifferent metals:<\/span><\/p>\n<ul>\n<li><span class=\"fontstyle0\">Brass \u2013 so the bar becomes one length of brass<\/span><\/li>\n<li><span class=\"fontstyle0\">Aluminium<\/span><\/li>\n<li><span class=\"fontstyle0\">Stainless steel<\/span><\/li>\n<li><span class=\"fontstyle0\">Copper<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span class=\"fontstyle0\">Each middle section has three thermocouples to enable the calculation of thermal conductivity of specimens using two different methods:<\/span>\n<ul>\n<li><span class=\"fontstyle0\">The absolute method<\/span><\/li>\n<li><span class=\"fontstyle0\">The comparative cut-bar method<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span class=\"fontstyle0\">The electric heater and thermocouples connect to sockets on the Heat Transfer Experiments Base Unit, which also supplies the cold water feed and drain for the heat sink.<\/span><\/li>\n<li><span class=\"fontstyle0\">Students turn on the cooling water flow and adjust the heater power until the experiment reaches equilibrium they then record the temperatures as the heat conducts along the bar. <\/span><\/li>\n<li><span class=\"fontstyle0\">Insulation around the bar reduces heat loss by convection and radiation, so that the results should be close to the theory for simple linear conduction only. (Heat loss can also be simply estimated using a pre-determined<br \/>\nTecQuipment chart and table)<\/span><\/li>\n<\/ul>\n<p><em><span style=\"text-decoration: underline;\">Learning Outcomes:<\/span><\/em><\/p>\n<ul>\n<li>\u00a0<span class=\"fontstyle0\">Demonstration and calculations of linear heat conduction<\/span><\/li>\n<li><span class=\"fontstyle0\">Calculation of the thermal conductivity (<\/span><span class=\"fontstyle2\">k <\/span><span class=\"fontstyle0\">value)<\/span><\/li>\n<li><span class=\"fontstyle0\">Demonstration of the effectiveness of thermal paste<\/span><\/li>\n<li><span class=\"fontstyle0\">Demonstration and calculations of thermal resistances (<\/span><span class=\"fontstyle2\">R <\/span><span class=\"fontstyle0\">value) in series<\/span><\/li>\n<li><span class=\"fontstyle0\">Demonstration of \u2018thermal lag\u2019<\/span><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Product Code: TD1002A<\/p>\n","protected":false},"featured_media":3147,"template":"","meta":[],"product_cat":[31,884],"product_tag":[],"_links":{"self":[{"href":"https:\/\/dbm.com.vn\/en\/wp-json\/wp\/v2\/product\/3492"}],"collection":[{"href":"https:\/\/dbm.com.vn\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/dbm.com.vn\/en\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dbm.com.vn\/en\/wp-json\/wp\/v2\/media\/3147"}],"wp:attachment":[{"href":"https:\/\/dbm.com.vn\/en\/wp-json\/wp\/v2\/media?parent=3492"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/dbm.com.vn\/en\/wp-json\/wp\/v2\/product_cat?post=3492"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/dbm.com.vn\/en\/wp-json\/wp\/v2\/product_tag?post=3492"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}