Combined Cold Heat and Power (CCHP) is of great advantage in energy cascade using, but the energy grade brings more difficulties for energy equal transformation. Considering the rising of energy transformation efficiency, and the coefficient is decreasing which power converts into coal, so the transformation of different energy will change with production status. So we set out to research the problem from the angle of pollutant emission based on heat equivalent (HE), and proposed the principle of equal emission (PEE) that can reflect the dynami...