APPENDIX B (continued)
Thermal Mass and Thermal Mass with Nocturnal Ventilation
Boundaries. The thermal mass boundaries (Figure B-2) are based on an upper
comfort limit to vapor pressure and on the average outdoor daily temperature
Evaporative Cooling Boundary. The evaporative cooling boundary
(see Figure B-3) refers only to direct evaporative cooling. The boundary is
based on the maximum wet bulb temperature acceptable for comfort and the
cooling capacity of air.
Climate Data from the National Climatic Data Center (NCDC). Obtain
climate data (RUSSWO or SMOS, Part E) from National Oceanography Command
Detachment (NOCD), Federal Building, Asheville, North Carolina 28801-2696,
telephone (704) 252-7865 or the NCDC at (704) 259-0682 for the weather station
most similar to the building site. This is usually the closest station, but
in pronounced terrain there may be large changes over a small distance. See
Appendix A, Section 2, for a description of climate data extrapolation.
RUSSWO or SMOS, Part E should include:
Psychrometric summary--annual and monthly, and
Means and standard deviations of dry-bulb temperature--annual.
If both RUSSWO and SMOS summaries exist, choose the one with the longest
period of record. Request full size (not reduced) copies.