Performance lines and energy signatures: Analysis with reference to the CIBSE Building Energy Code

Abstract

With the increasing use of building energy management systems (BEMS) and serially interfacable utility meters, performance lines and energy signatures can be very useful management tools. This paper proposes models of intermittent heating, taken from the CIBSE Building Energy Code, boiler efficiency and compensator control to give a better understanding of energy signatures, the heating plant and its control. Using these models the seasonal efficiency of the boiler is determined as 57%, that for the compensator as 70%, and the intermittent heating saving 17% for an example two-storey open-plan office building.