Techniques used to construct an energy model for attaining energy efficiency in building: A review

A number of techniques have been developed to construct load models or energy consumption models that simulate a building´s energy system, consisting of HVAC and lighting, etc for load prediction or cost saving estimates. Such models vary in magnitude from modeling of a single slab (or a wall) to modeling of a complete building through modeling of rooms subjected to temperature variations. Different classification of building energy model development is reviewed in this paper. This paper reviews various documented research works of modeling techniques employed to develop an energy model in order to achieve the target of energy efficiency in buildings.