A natural-gas-fired useful heat, and it runs with an 85% capacity factor. That heat displaces natural gas used in an 80% efficient boiler.
Electricity 70 kW
Capacitor factor 0.85 (3 CHP Boiler
30%
Displaced n. gas boiler fuel
50%
Usable heat
80%
In Btu/h, determine the energy flow (1-5) for the above diagram.