EXPERIMENT PROCEDURE

 

a)         The power supply is switched on.

b)         The feed water pump is switched on to allow water to flow from a reservoir into

boiler. The capacity input into the boiler should be in the minimum and maximum

level as indicated on the edge of the front boiler side or near to the front heater.

c)         There are two springs in the system. Either one is set as a datum. Then, spring

load of the other spring is set according to necessary load. In the first case the load is set to 0 N.

d)         Then the switch of the front and rear heater in the system is turned on.

c)         When the pressure in the boiler reaching about 3.5 bar (350 kN/m²), the actual

boiler pressure and temperature is read from the pressure meter and thermometer

attached.

f)          When the temperature has reached or more than 100 Celsius, the steam inside the

boiler is released by opening the steam control valve.

g)         In one swift movement, the starting knob is pulled upwards on and let go.

h)         Using tachometer, the steam motor rotation is adjust and try to maintain constant at about 1500 rpm by adjusting the steam control valve at the boiler.

i)          The condenser cooling water is turned on and adjusts to a flow rate of about 1.6

l/ min. The apparatus is run at least 5 minutes for condition to stable.

j)          The boiler pressure and temperature is recorded, engine inlet pressure , engine speed, spring balance loads, condenser cooling water temperatures and flow rate and condensate flow rate obtained at varying engine load to the table 1. The condensate flow rate is measured by measuring the volume collected in a measuring cylinder for a period of I minute.

k)         Step (J) is repeated for load 1.0N, 1.5N, 2.0N, 2.5N, 3.0N.

l)          After use, the electrical and water supplies is disconnect also allow the boiler to cool down and open the boiler drain valve. Any water from the apparatus is drained.

m)        The temperature display is switched off.