1. In 1767 John Smeaton measured the performance of a Newcomen engine with a 60.0-inch diameter piston and found that it produced 40.8 net horsepower with a duty of 5.88 million. Determine
(a) the thermal efficiency of this engine and
(b) its boiler heat input rate.
2. In 1767, John Smeaton measured the performance of a Newcomen engine with a 75.0-inch diameter piston and found that it produced 37.6 net horsepower with a duty of 4.59 million. Determine
(a) the thermal efficiency of this engine and
(b) the boiler heat input rate.