Influence of inner heat sources on annual heating and cooling energy consumption and its relative variation rates (RVRs)

This paper makes simulation calculations on the annual heating and cooling energy consumption of 960 m2 model building with traditional and improved envelope, respectively, under different inner heat sources by CTM. It can be found that for the same building, annual heating need decreases obviously while annual cooling need increases significantly with the increase of inner heat sources; In the case of constant inner heat source, the annual heating and cooling needs both decline obviously for the same building with the same improvement of envelopes. Furthermore, the absolute reduction of annual heating energy consumption resulted from the improvement of envelope decreases with the increase of inner heat sources while that of annual cooling need contributed by the same improvement of envelope basically does not vary with the increase of inner heat source; Annual energy conservation rates (RVRs) of heating rise rapidly with the increase of inner heat source while the annual cooling RVRs decrease with the increase of inner heat source.