Answer Happy

The following observations were taken during a test on a single cylinder 4 stroke

cycle engine having a bore of 300 mm and a stroke of 450 mm.

Ambient air temperature =22°C

Engine speed = 300 rpm

Fuel consumption =11 kg/h

CV of fuel = 42000 kJ/kg.

Mean effective pressure = 6 bar

Rope diameter = 2 cm

Net brake load =1.0 kN

Brake drum diameter = 2 m

Quantity of Jacket cooling water = 590 kg/hr

Temperature entering cooling water = 22°C

Temperature of leaving cooling water =70°C

Quantity of air as measured = 225 kg/h

Specific heat of exhaust of gases =1.005 kJ/kgK
Exhaust gas temperature = 405°C

Determine indicated power, brake power, mechanical efficiency and draw a heat

balance sheet on hour basis.
2. The following observations were taken during a test on a single cylinder 4 stroke cycle engine having a bore of 300 mm and a stroke of 450 mm. Ambient air temperature =22°C Engine speed = 300 rpm Fuel consumption =11 kg/h CV of fuel = 42000 kJ/kg. Mean effective pressure = 6 bar Rope diameter = 2 cm Net brake load =1.0 KN Brake drum diameter = 2 m Quantity of Jacket cooling water = 590 kg/hr Temperature entering cooling water = 22°C Temperature of leaving cooling water =70°C Quantity of air as measured = 225 kg/h Specific heat of exhaust of gases =1.005 kJ/kgK Exhaust gas temperature = 405°C Determine indicated power, brake power, mechanical efficiency and draw a heat balance sheet on hour basis.