A STUDY ON HEAT AND MOISTURE STATE OF HULL LAYER FOR THERMAL INSTULATION OF A COLD STORAGE

This paper analyses the thermal moist characteristics of the hull layer beside an air layer at lower temperature in an envelope for a cold storage and presents a new method of waterproof by air layer. With test data from engineering practice, the theory on the barrier of self moisture proof at the surface sublayer of the hull layer in an attic on a cold storage is proven. The dried zone about three phase point is confirmed. It is a new knowledge for thermophysics on thermal design of a cold storage with an optimum thermal performance.     

THE THERMAL CRACK IN MASONRY STRUCTURE AND ITS CONTROL DESIGNING

The horizontal, vertical or oblique thermal cracks widely present in a masonry structure are summarized in this paper. The reasons for these cracks are analyzed.On basis of these causes, different methods called" readjusting", "releasing" and "resisting" for short, can be taken respectively in structure design to eliminate the cracks.