Heat 2

HEAT-2 or UNIT OF R From, R = = = K From R = = K - Hence the SI unit used is Kelvin per watt (K ) DETERMINATION OF THERMAL CONDUCTIVITY OF A GOOD CONDUCTOR OF HEAT SEARLE’S METHOD

1. 2. The heater is switched on and water is passed through the copper coil at a constant rate. If the bar is assumed to be perfectly lagged. Then at steady state (i.e when all four thermometers give stead readings) the rate of flow of heat in distance X is given by: ……………… (1) Where K = Thermal conductivity of the material of the bar Since the bar is assumed to be perfectly lagged, all of the heat which flow along the bar is being used to increase the temperature of the water. 

Heat 2 from shahzadebaujiti