6. Practical Heat Engines Heat engines have steadily improved since they were first invented 300 years ago Early Watt pumping N ngine (James Watt, Pump Cot shaun 1770s) and-a First compound Steam Turbine built by Charles Parsons in 1887-basis Hatwell caH water tank vacuums Condenser for most of our electricity generation noy The 1698 Savery Engine- the first commercially-useful steam engine: built by Thomas savery6. Practical Heat Engines The 1698 Savery Engine – the first commercially-useful steam engine: built by Thomas Savery. Early Watt pumping engine (James Watt, 1770s) Heat engines have steadily improved since they were first invented 300 years ago. First compound Steam Turbine, built by Charles Parsons in 1887 – basis for most of our electricity generation now