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ASHRAE Standard 90.4 2019

ASHRAE Standard 90.4 2019

$86.13

ASHRAE Standard 90.4-2019 — Energy Standard for Data Centers- (ANSI Approved)

Published By Publication Date Number of Pages
ASHRAE 2019 60
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ASHRAE Standard 90.4 establishes the minimum energy efficiency requirements of data centers for design, construction, and operation and maintenance, and use of on-site or off-site renewable energy resources.The standard was developed to be code-intended, similar to Standard 90.1, and references in Standard 90.4 are made to Standard 90.1 for building envelope, service water heating, lighting, and other equipment criteria. Key updates to the 2019 edition include: * In Section 6, a reduction of the maximum MLC values required for compliance, and removal of the design MLC compliance path in favor of a more accurate maximum annualized MLC calculation * In Section 8, a reduction of the maximum ELC values for the UPS segment required for compliance, made to recognize improvements in the efficiency of core electrical distribution equipment

PDF Catalog

PDF Pages PDF Title
1 ANSI/ASHRAE Standard 90.4-2019
3 CONTENTS
4 FOREWORD
1. Purpose
2. Scope
2.1 This standard applies to
2.2 The provisions of this standard do not apply to
C1. EXAMPLES—DESIGN ELC CALCULATIONS
5 2.3 Where specifically noted in this standard, certain other buildings or elements of buildings shall be exempt.
2.4 This standard shall not be used to circumvent any safety, health, or environmental requirements.
3. DEFINITIONS
3.1 General. Certain terms, abbreviations, and acronyms are defined in this section for the purposes of this standard. When the tense or plurality of the term differs from the defined term, the defined term still applies. These definitions are applic…
3.2 Definitions
9 4. ADMINISTRATION AND ENFORCEMENT
4.1 General
10 4.2 Compliance
12 5. BUILDING ENVELOPE
5.1 General
5.2 Compliance Paths
6. HEATING, VENTILATING, AND AIR CONDITIONING
6.1 General
13 6.2 Compliance Paths
6.3 Simplified/Small Building Option (Not Used)
6.4 Mandatory Provisions
6.5 Maximum Annualized Mechanical Load Component (Annualized MLC). Annualized MLC shall be calculated using Equation 6.5. The resulting value shall be less than or equal to the value in Table 6.5, “Maximum Annualized Mechanical Load Component (Annu…
16 6.6 Submittals
17 6.7 Minimum Efficiency Tables (Not Used)
7. SERVICE WATER HEATING
7.1 General
7.2 Compliance Paths
8. POWER
8.1 General
8.2 Compliance Paths
18 8.3 Simplified/Small Building Option (Not Used)
8.4 Mandatory Provisions
19 8.5 Maximum Design Electrical Loss Component (Design ELC) for Designs Involving Electrical Systems Only. Design ELC shall be calculated in accordance with Section 8.4 and shall be less than or equal to the values shown in Table 8.5 or Table 8.6.
8.6 Maximum Design Electrical Loss Component (Design ELC) for Designs Involving Both Electrical and Mechanical Systems. Design ELC shall be calculated in accordance with Section 8.4 and shall be combined with the annualized MLC in accordance with Sec…
20 8.7 Submittals
21 8.8 Product Information (Not Used)
9. LIGHTING
9.1 General
9.2 Compliance Paths
10. OTHER EQUIPMENT
10.1 General
10.2 Compliance Paths
11. ALTERNATIVE COMPLIANCE METHOD
11.1 General
11.2 Compliance. Compliance with Section 11 shall be demonstrated by complying with all of the following conditions:
22 11.3 Use of Shared Systems. When existing or proposed mechanical and/or electrical systems are intended to routinely support the data center and other spaces (i.e., spaces that do or do not meet the definition of a data center), the data center or da…
23 12. NORMATIVE REFERENCES
24 INFORMATIVE APPENDIX A: INFORMATIVE REFERENCES
29 INFORMATIVE APPENDIX B: SAMPLE SUBMITTAL FORMS
35 INFORMATIVE APPENDIX C: TOOLS FOR ILLUSTRATING COMPLIANCE
44 C2. SAMPLE CALCULATION OF ELC SEGMENTS AND TOTALS
C2.1 Notes for Tables C-1 through C-10
50 INFORMATIVE APPENDIX D: ADDITIONAL GUIDANCE ON TELEPHONE EXCHANGES
51 INFORMATIVE APPENDIX E: ADDENDA DESCRIPTION INFORMATION
52 ANNEX 1 REFERENCE STANDARD REPRODUCTION ANNEX—ASHRAE/Ies STANDARD 90.1

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ASHRAE Standard 90.4 2019
$86.13