Afour-stroke cycle engine delivers a torque of 437 ft-lb at the flywheel (output shaft) when the engine speed is 2100 rpm while using 514 hp of fuel equivalent power. this six-cylinder engine has cylinders with a bore of 4.19 in, a stroke of 5.0 in, and a clearance volume of 8.81 in^3. a. what is the brake power (hp) delivered by this engine? b. what is the brake mean effective pressure (lb/in2) for this engine? c. what is the brake thermal efficiency of this engine?

An air-conditioning system consists of a heating section and an evaporative cooler. air enters the heating section at 10°c and 70 percent relative humidity at a rate of 30m^3/min, and it leaves the evaporative cooler at 20°c and 60 percent relatively humidity. if the air conditioning system operates at a total pressure of 98 kpa, determine (a) the temperature and relative humidity of the air when it leaves the heating section, (b) the rate of heat transfer in the heating section, and (c) the rate of water added to air in the evaporative cooler