7 EXTERNAL HEAT ENGINE FOR USE IN CONVERTING HEAT ENERGY INTO ELECTRICITY OR THERMAL ENERGY FROM SOURCES INCLUDING, THE COMBUSTION OF A LIQUID GAS OR SOLID FUEL, SOLAR ENERGY, OR WASTE HEAT
40 DESIGN OF EXTERNAL HEAT ENGINE FOR USE IN CONVERTING HEAT ENERGY INTO ELECTRICITY OR THERMAL ENERGY FROM SOURCES INCLUDING, THE COMBUSTION OF A LIQUID GAS OR SOLID FUEL, SOLAR ENERGY, OR WASTE HEAT