Conference Proceeding published 1989 by ASHRAE
Written By M. Steinman, P.E.; L.N. Kalisperis, Ph.D.; L.H. Summers, Ph.D., P.E.
This paper demonstrates that a new method of radiant heat exchange produces significantly improved accuracies over the BLAST (Hittle 1976) and NBSLD (Kusuda 1976) loads programs. It incorporates the "mean radiant temperature (MRT) method," which is currently employed by the BLAST Ioads program (Maloney 1985, 1988). It proposed that, with error analysis and numerical methods correction, components can be applied to the MRT algorithms. The correction components accoUnt for an enclosed environmentâs surface-to-surface exact angle factors, which are lacking in the MRT method. The new method will improve the accuracy of the MRT method while maintaining its advantageous computational time. This leads to accurate determination of building loads and human comfort conditions. The new method is most applicable to complex geometries and geometries with large surface temperature variations.
Citation: Symposium, ASHRAE Transactions, vol. 95, pt. 1, Chicago 1989
