MED2.docx →GROUB CExample 1A 15 mm diameter and 5 m long electric wire is tightly wrapped with 2mm thick plastic cover whose thermal conductivity is k= 0. 15 W/ m °C.Electrical measurements indicate that a current of 5 A passes through thewire and there is a voltage drop of 8 V along the wire. If the insulatedwire is exposed to a medium at To = 288,15 K with the heat transfercoefficient of h = 12 w/ m² °C. Determine the temperature at the interfaceof wire and the plastic cover in steady operation.Example 2Calculate the amount of heat loss (in Watts) through an uncoveredwindow in a home. The temperature difference between the air inside andoutside of the house is 200C, with moderate convection on each side ofthe glass. The size of the glass is 0.75m by 1.2 m, and the thickness is 3mm. hin = 25 W/ m² °C and hout = 45 W/ m² °C and k = 0,81 W/ m °C%3D%3DEXAMPLE 3Steam at a temperature of 300 °C flows through a steal pipe, k= 14.9W/m.K of 60 mm inside diameter and 80 mm outside diameter. Theconvection coefficient between the steam and the inner surface of thepipe is 500 W/m² K, while that between the outer surface of the pipe andthe surroundings is 25 W/m² .K the temperature of the surroundings air is25 C.-What is the heat loss per unit length of pipe?

A 15 mm diameter and 5 m long electric wire is tightly wrapped with 2 mm thick plastic cover whose thermal conductivity is k = 0. 15 W/m °C. Electrical measurements indicate that a current of 5 A passes through the wire and there is a voltage drop of 8 V along the wire. If the insulated wire is exposed to a medium at Too = 288,15 K with the heat transfer coefficient of h = 12 w/ m² °C. Determine the temperature at the interface of wire and the plastic cover in steady operation.

A 15 mm diameter and 5 m long electric wire is tightly wrapped with 2 mm thick plastic cover whose thermal conductivity is k = 0. 15 W/m °C. Electrical measurements indicate that a current of 5 A passes through the wire and there is a voltage drop of 8 V along the wire. If the insulated wire is exposed to a medium at Too = 288,15 K with the heat transfer coefficient of h = 12 w/ m² °C. Determine the temperature at the interface of wire and the plastic cover in steady operation.