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New Peak Moisture Design Data in the 1997 ASHRAE Handbook of Fundamentals
Abstract
Chapter 26 of the 1997 edition of the Handbook of
Fundamentals published by ASHRAE (American Society
of Heating, Refrigerating and Air Conditioning
Engineers) contains climatic design data that has been
completely revised, recalculated and expanded.
Designers of air conditioning systems for hot and
humid climates will be pleased to note that, for the first
time, the chapter contains values for peak moisture conditions.
This is in sharp contrast to older editions, which
contained only the average moisture during periods of
peak dry bulb temperatures. The new data show that
using earlier, temperature-based data for humidity design
underestimates the true peak moisture loads by 30
to 50% depending on the humidity control level in the
space. This paper explains the new data elements and
suggests some of its potential implications for engineers
designing air conditioning systems for hot and humid
climates.
Citation
Harriman, L. (1998). New Peak Moisture Design Data in the 1997 ASHRAE Handbook of Fundamentals. Energy Systems Laboratory (http://esl.tamu.edu); Texas A&M University (http://www.tamu.edu). Available electronically from https : / /hdl .handle .net /1969 .1 /6735.