shown in fig4 the by pass system 40 includes the by pass valve 42 which can be operated manually by the valve stem 44 and handle 46 or by an electrical solenoid not shown or by any other well known mechanisms one of the applications for the by pass system 40 is to tune originally manufactured microturbine system that because of manufacturing tolerances that are typical in this type of manufacturing processes the efficiencies of the engines vary the by pass valve 42 can be adjusted to alter the discharge of the turbine exhaust so that the efficiency of a given engine can be adjusted to match the efficiency specified in the engines 39 specification another application of the by pass system 40 is to utilize the spent turbine exhaust as discussed in connection with the description of the embodiment depicted in fig3 and power a water boiler not shown to obtain hot water it is apparent from the foregoing that the manually operated system can be set to provide a given temperature of the boiler and once valve 42 is set the boiler is subjected to the operation of the microturbine engine and alternator hence if the load imposed on the microturbine engine changes the change would affect the temperature of the turbine and as a consequence the temperature of the turbine exhaust and ultimately to the spent turbine exhaust 0026 fig5 addresses this problem by including an automatic system for controlling valve 42 in this system a temperature sensor 50 which can be any well known.