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ASHRAE Std 40 2014

ASHRAE Std 40 2014

$38.46

ANSI/ASHRAE Standard 40-2014 Methods of Testing for Rating Heat Operated Unitary Air-Conditioning and Heat-Pump Equipment

Published By Publication Date Number of Pages
ASHRAE 2014 32
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ASHRAE Standard 40 provides test methods for determining the heating and cooling output capacities and energy inputs of unitary air-conditioning and heat pump equipment that is heat-operated. The 2014 revision of Standard 40 includes the following changes: The Scope in Section 2.3 was revised to remove specific mention ofreferences and to clarify the intended scope The definition of “batch process” was revised to eliminate use of the term “cycle” Definitions were added for “electrically driven unitary air conditioners or heat pumps” and “heat-operatedabsorption chillers.” Definitions for “heat-operated” and “heat-operated unitary equipment” were revised Definitions for “section” and “sorbent” were removed The unit conversions for temperature in the definitions for “standard air” and “standard temperature” were corrected Sections 4(c) and 4(d) were revised to improve clarity The title of ASHRAE Standard 37 was corrected in 5. 1(d) The capacity range of Sections 5.2.1, 5.2.2, and 14.1.2 was revised to more closely align with current industry classifications Section 5.2.2.1 was revised for clarity Section 5.2.3 was eliminated as it did not have enforceable requirements Section 5.3.1.1 was revised to increase the allowable heating value range for natural gas In Table 5.3.1 (previously Table I), the Sl units for heating value were corrected. The default heat value for natural gas was revised. The source reference was removed The wording of Sections 6.1.2, 6.6.2.4, R.2, 9.2.3, 9.2.4, 10.3.2, 1 1.1.3, 1 1.2.4, and 12.1.4. 1 were revised to usc enforceable language Section 6.1.3 was eliminated as it did not have enforceable requirements The references in Section 6.5 were updated The footnotes from Section 6.6 were revised to direct the user to the correct portion of the standard Tables 1 0.3.2 (previously Table 4a and 4b) were relocated In Section 9.5 .1, the definition of qthi was revised The alternative requirements for airflow measurement in Section I 0 were clarified. Additional alternative requirements are contained in the new 12.3.4 Sections 1 0.4. 1, 1 0.4.2, and 1 0.4.3 were revised for clarity The option to usc mercury-in-glass-thermometers in Section 12.1 .1 was removed The section that was previously numbered 12.1.4.1 was eliminated The suggested list of pressure measurement types was removed from Section 12.2.1 Section 14.1.l.h was revised to stipulate that it applied to electrical power Section 16 references were updated and reorganized. References that arc not required for compliance with the standard were removed Informative Annex A was revised to eliminate unnecessary material.

PDF Catalog

PDF Pages PDF Title
1 ANSI/ASHRAE Standard 40-2014
3 CONTENTS
4 FOREWORD
1. PURPOSE
2. SCOPE
5 3. DEFINITIONS
6 4. METHOD FOR USING THIS STANDARD
5. TEST METHODS
6. AIR-ENTHALPY TEST METHOD
11 7. HEAT BALANCE METHOD
13 8. COOLANT HEAT-TRANSFER FLUID FLOW METHOD
9. REFRIGERANT ENTHALPY METHOD
14 10. AIRFLOW MEASUREMENT
17 11. PRESSURE (EXTERNAL RESISTANCE) MEASUREMENT
18 12. INSTRUMENTS
19 13. TEST PREPARATION AND PERFORMANCE
20 14. TEST RESULTS
22 15. NOMENCLATURE
16. REFERENCES AND BIBLIOGRAPHY
28 INFORMATIVE ANNEX A—ENVIRONMENTAL CHAMBER DESIGN CONSIDERATIONS FOR TESTING HEAT-ACTUATED COOLING EQUIPMENT

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ASHRAE Std 40 2014
$38.46