Year: 2001 Language: English Author: ASHRAE Format: PDF Quality: eBook Pages count: 68 Description: Deficiencies in duct design can result in systems that operate incorrectly or are expensive to own and operate. Poor air distribu- tion can cause discomfort, loss of productivity and even adverse health effects; lack of sound attenuators may permit objectionable noise levels. Poorly designed ductwork can result in unbalanced systems. Faulty duct construction or lack of duct sealing produces inadequate airflow rates at the terminals. Proper duct insulation eliminates the problem caused by excessive heat gain or loss. In this chapter, system design and the calculation of a system’s frictional and dynamic resistance to airflow are considered. Chap- ter 16 of the 2000 ASHRAE Handbook—Systems and Equipment examines duct construction and presents construction standards for residential, commercial, and industrial heating, ventilating, air- conditioning, and exhaust systems.
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ASHRAE Fundamentals Handbook
Language: English
Author: ASHRAE
Format: PDF
Quality: eBook
Pages count: 68
Description: Deficiencies in duct design can result in systems that operate
incorrectly or are expensive to own and operate. Poor air distribu-
tion can cause discomfort, loss of productivity and even adverse
health effects; lack of sound attenuators may permit objectionable
noise levels. Poorly designed ductwork can result in unbalanced
systems. Faulty duct construction or lack of duct sealing produces
inadequate airflow rates at the terminals. Proper duct insulation
eliminates the problem caused by excessive heat gain or loss.
In this chapter, system design and the calculation of a system’s
frictional and dynamic resistance to airflow are considered. Chap-
ter 16 of the 2000 ASHRAE Handbook—Systems and Equipment
examines duct construction and presents construction standards for
residential, commercial, and industrial heating, ventilating, air-
conditioning, and exhaust systems.
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DUCT_DESIGN.pdf
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