Example image of eyePlorer eyePlorer map for 'Feedwater heater': Boiler Power station Steam Thermal efficiency Thermal shock Rankine cycle Second law of thermodynamics Steam turbine Heat exchanger Surface condenser Deaerator Shell and tube heat exchanger Entropy Isenthalpic process Portable engine Stationary engine Steam locomotive Economizer Flue gas Furnace Heating Bavarian G 3/4 H Thermic siphon Southern Pacific class MC-4 Franco-Crosti boiler James Millholland Southern Pacific 2472 China Railways QJ G&SWR 128 Class PRR N1s LSWR D15 class Milwaukee Road class F6 Southern Pacific class MC-6 Southern Pacific class MM-2 Steam Elephant LMS Class 2P 4-4-0 LMS Class 7F 0-8-0 PRR L1s 2-10-10-2 New South Wales C35 class locomotive Southern Pacific class MC-2 J&H McLaren & Co. NYC Mohawk PRR M1 231 B Ouest PRR K5 PRR S2 2-8-8-8-2 Laguna Verde nuclear power plant Saxon XI HT