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ASHRAE STD 198

Method of Test for Rating DX-Dedicated Outdoor Air Systems for Moisture Removal Capacity and Moisture Removal Efficiency

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Organization: ASHRAE
Publication Date: 26 January 2013
Status: active
Page Count: 18
scope:

This method of test applies to air-cooled,water-cooled, or water-source factory-assembled DX-DOAS products that condition 100% outdoor air and may include factory assembled preconditioning device(s). Units containing water coils requiring a supply of water supplied by a liquid chiller located outside of the unit are not covered by this standard. This standard is not to be used to rate stand-alone preconditioning or energy-recovery devices.

These test methods do not specify methods of establishing ratings that involve factors such as manufacturing tolerances and quality control procedures.

PURPOSE

This standard prescribes test methods for rating directexchange dedicated outdoor air systems (DX-DOAS) units.

Document History

ASHRAE STD 198
January 26, 2013
Method of Test for Rating DX-Dedicated Outdoor Air Systems for Moisture Removal Capacity and Moisture Removal Efficiency
This method of test applies to air-cooled,water-cooled, or water-source factory-assembled DX-DOAS products that condition 100% outdoor air and may include factory assembled preconditioning device(s)....

References

This document references:
ASHRAE STD 41.1 - Standard Methods for Temperature Measurement
Published by ASHRAE on January 1, 2020
This standard applies to temperature measurements under laboratory and field conditions for use in testing heating, ventilating, air-conditioning, and refrigeration systems and components.
This document references:
ASHRAE STD 41.2 - Standard Methods for Air Velocity and Airflow Measurement
Published by ASHRAE on May 31, 2018
This standard applies to air velocity and airflow measurement for testing heating, ventilating, air conditioning, and refrigerating systems and components at pressures within the range of –25 to +25...
This document references:
41.8 - Standard Methods for Liquid Flow Measurement
Published by ASHRAE on October 31, 2023
This standard applies to laboratory and field liquid flow measurement for testing heating, ventilating, airconditioning, and refrigerating systems and components. This standard is restricted to...
This document references:
JOURN 41-3 TA - ASHRAE Journal
Published by ASHRAE on March 1, 1999
A description is not available for this item.
This document references:
ASHRAE STD 41.6 - Standard Method for Humidity Measurement
Published by ASHRAE on June 28, 2014
This standard applies to the measurement of humidity of moist air from sea level to 3048 m (10,000 ft), within the drybulb temperature range of –50°C to 160°C (–58°F to 320°F), and within the...
This document is referenced by:
AHRI 921 SI - Performance Rating of Direct Expansion-Dedicated Outdoor Air System Units
Published by AHRI on January 1, 2020
This standard applies to factory-assembled commercial or industrial DX-DOAS Units as defined in Section 3. Energy Source. This standard only applies to electrically operated, vapor-compression...
This document is referenced by:
ASHRAE SYSTEMS & EQUIP IP - 2020 ASHRAE Handbook HVAC Systems and Equipment I-P Edition
Published by ASHRAE on January 1, 2020
A description is not available for this item.
This document is referenced by:
ASHRAE SYSTEMS & EQUIP SI - 2020 ASHRAE Handbook HVAC Systems and Equipment SI Edition
Published by ASHRAE on January 1, 2020
A description is not available for this item.
This document is referenced by:
AHRI 920 I-P - Performance Rating of Direct Expansion-Dedicated Outdoor Air System Units
Published by AHRI on January 1, 2020
This standard applies to factory-assembled commercial or industrial DX-DOAS Units as defined in Section 3. Energy Source. This standard only applies to electrically operated, vapor-compression...
This document is referenced by:
ASHRAE 40304 - Proclaiming the truth
Published by ASHRAE on January 1, 2020
Introduction Why entitle this illustrated history of ASHRAE Proclaiming the Truth? To John E. Starr, the first president of The American Society of Refrigerating Engineers (ASRE), “finding the truth”...
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