| Sahiplik | Değer |
| İsim | MM 309 HEAT TRANSFER |
| Açıklama | MM 309 HEAT TRANSFER EXPERIMENT REPORT Ass.Prof.Dr. SENOL BASKAYA IBRAHIM OZGUC F98115005 CONDUCTION Conduction is the transfer of energy from the more energetic particles of a substance to the adjacent less energetic ones as a result of interaction between the particles. Conduction in solid substances, it is due to combination of vibrations of the molecules in a lattice and the energy transport by free electrons. The rate of heat conduction through a medium depends on the geometry of the medium, its thickness and the material of the medium, as well as temperature difference across the medium. The conclude that the rate of heat conduction through a plane layer is proportional to the temperature difference across the layer and the heat transfer area, but is inversely proportional to the thickness of the layer. That is Q conduction = k A DT ¤ Dx where the constant of proportionality k is the thermal conductivity of the material which is measure of the ability of a material to conduct heat which is called Fourier’s Law of conduction. CONDUCTIVITY The coefficient of thermal conductivity has been defined as the quantity of heat that will flow across unit area in unit time if the temperature gradient between the two surfaces through which heat is flowing is unity. Numerical values of k have been determined experimentally, by various investigators. If a material is brass as a metal, k is determined by electrically heating one end of a bar of the metal and cooling the other end with a stream of water. The surface of the bar is insulated and the heat lost through the insulation is accounted for. The rate of heat flow is measured and the temperatures of two points along the bar, a known distance apart, are determined. Equation of the Fourier’s law is then used to calculate the average conductivity for the given temperature range. Determination of thermal conduct... |
| Dosya Adı | Bağlantı m33.doc |
| Dosya Boyutu | Link |
| Dosya Tipi | doc (Mime Tipi: link) |
| Ekleyen | admin |
| Ekleme tarihi: | 07.10.2008 16:13 |
| İnceleyenler | Herkes |
| Kontrol Eden | Editor |
| İndirme sayısı | 2 İndirme sayısı |
| En son güncelleme | 07.10.2008 16:14 |
| Anasayfa | http://www.edubilim.com |
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