A different degree of energy saving effect was achieved by using different new block. In this paper, numerical analysis of the steady state behaviour about two-dimensional temperature field was carried out about three kinds of block. Then the effect on thermal performance by the pass and the kind of concrete was analyzed qualitatively and quantitatively. This paper will put forward some meaningful suggestions for the engineering design. (C) 2011 Published by Elsevier B.V. Selection and/or peer-review under responsibility of the Organising Committ...