Thermal Conductivity of Composite Slab
Aim: To determine thermal conductivity of composite slab Theory: Many engineering applications require use of composite structures to reduce the heat transfer rate like walls of cold storage, fridge, furnace wall etc, in which different materials are arranged in series or parallel. A hot fluid flow inside the tube covered with a layer of thermal insulation is an example of composite system because in this case the thermal conductivity of tube metal and insulation are different. Heat transfer rate can be estimated through the composite system by using the thermal resistance concept. Thermal Conductivity of Composite Slab Figure shows experimental set up. The composite slab consists of mild steel, bakelite and wood of same diameter and or different thicknesses. All the three plates are clamped in pairs in consecutive sequence. The series starts with mild steel plate, bakelite, press wood with aluminum on one side of heater in the centre and the same on the other si