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|Location: Long Beach, CA|
|5:00 PM - 7:00 PM - Programs, Handbook and Research||
|2:15 PM - 7:30 PM - Main Committee||
|TC 9.9 sponsored seminars, conference paper session, data center related topics, etc. will be posted for the Long Beach Annual Conference. Further information can be found in the Meetings section of the website.|
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Robin Steinbrecher TC0909@ashrae.net
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TC 9.9 is concerned with all aspects of mission critical facilities, technology spaces, and electronic equipment/systems.
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If you would like to get involved in this TC's issues at the Society level, read through the pages of this site, attend the biannual meetings, or contact our committee chair at email@example.com.
Past presentations given at the ASHRAE annual and winter meetings are now available. They can be found on the Documents page under the 'Other Publications' section.
Hello TC 9.9 Members,
You are invited to attend this TC 9.9 online meeting to hear the latest update from TC 9.9 members.
Conference information: 9AM PST; 12PM EST Dial-in Number: (712) 770-4010 Access code : 800393 #
International callers can find an in-country number dial-in number in this document. This is only a phone conference with no online presentations. If you have a pressing question that you would like answered, please let the committee chair (firstname.lastname@example.org) know ahead of time.
The new ASHRAE Standard 90.4-2016, Energy Standard for Data Centers, establishes the minimum energy efficiency requirements of data centers for design and construction and for creation of a plan for operation and maintenance, and for utilization of on-site or off-site renewable energy resources. Through publication of its Datacom series, ASHRAE has emerged as a leader in the data center field. Standard 90.4 draws upon the collective expertise of the industry to promote stable and sustainable data centers.
Standard 90.4 is a performance-based design standard that offers the design components for mechanical load (MLC) and electrical loss (ELC). Calculations of the MLC and ELC are made and then compared to the maximum allowable values shown in the standard based on climate zones. Compliance with Standard 90.4 is achieved when the calculated values do not exceed the values contained in the standard. An alternative compliance path is provided that allows tradeoffs between the MLC and ELC.
The tentative agenda for the Sunday and Monday meetings has been set. Topics and order are subject to change as we approach the meetings. Please plan to attend. The agenda can be found here.
The paper, “Data Center Power Equipment Thermal Guidelines and Best Practices” contains an overview of data center power distribution and how changes in the data center thermal environment can affect power distribution equipment. The paper includes recommendations on how to improve power equipment thermal compatibility with IT equipment particularly where power equipment shares the same physical space and air stream as IT equipment.
The 4th ISC Public Review of BSR/ASHRAE Standard 90.4 is now open. The public review runs from April 29, 2016 to May 29, 2016. This ISC draft revises the definition of incoming electrical service point, corrects equations in Section 22.214.171.124, revises Tables 126.96.36.199 and 188.8.131.52, adds verification of equipment efficiencies to Sections 6 and 8, corrects equations, revises Section 11.3 and updates references in Section 12. The link to the standard can be found here: https://osr.ashrae.org/
As committed at the Orlando meeting, the overview presentation for TC 9.9 has been updated and is now available on this site. This overview can be used by members to understand what TC 9.9 does and the resources available from TC 9.9. Please consider this as ASHRAE’s material and always follow appropriate use considerations.
An error was discovered in the latest edition of the ‘Thermal Guidelines’ book. ASHRAE has produced the attached errata and it can be downloaded by everyone from the following webpage (You do not have to have purchased the book to download the errata page.)
Please check out this errata which addresses the humidity levels for all ASHRAE air classes. Anyone can print out the material and insert it into their copy of the Thermal Guidelines book. The PDF will not be updated until the next reprint which may take some time.
TC 9.9 is recognized as a leader in driving the data center environmental knowledge and best practices in the industry. At the ASHRAE Annual Meeting in Orlando, TC 9.9 discussed one area where we must help to align our industry. Previously TC 9.9 has not provided definitions for ITE and locations where it is housed. It is essential that we do this to meet our mission "To be recognized by ALL areas of the datacom industry as the unbiased engineering leader in HVAC and an effective provider of technical information for the datacom industry."
It is important for data centers to be excluded from codes written for human occupancy. Even an IT server rack does NOT fit human occupancy codes. Racks that belong in human occupancy codes are ones supporting building services such as fire, security, HVAC, audio / video, etc. These racks are typically far less than 2 KW per rack. There might be occasional exceptions but those are minor compared to human occupancy codes requiring economizers on 2 KW IT server racks.
TC 9.9 has approved the following definitions for use by those needing to quantify data center related terms. Please consider them as the position of TC 9.9 as we move forward in developing standards, codes and general communications for our industry.
1) Data Center: A room or building, or portions thereof, with one or more ITE enclosures greater than 2 KW.
2) Information Technology Equipment (ITE): Computers, data storage, servers and network / communication equipment.
3) ITE Enclosure: A rack, cabinet, or chassis that is designed to mount ITE.
This paper defines thermal guidelines best practices for storage equipment. The intended audience is both storage hardware designers and storage equipment users. The thermal guidelines were written by a team of storage subject matter experts from many different companies and the recommendations are industry-wide best practices which are agnostic of the point of view of any one company.
There has been some confusion of ASHRAE's definition in the Thermal Guideline Datacom Book of the Temperature Rate of Change specified in the table for Equipment Environmental Specifications for Air Cooling. This addendum helps describe in detail examples of air inlet that are either non-compliant or compliant to ASHRAE's temperature rate of change requirements for data centers.
A bulk quantity discount for the Datacom Series Products applies to purchases of 10 or more copies of one title or any combination of titles, including the latest version of the Data Center Design CD.
Quantity discounts are available for purchases of 10 or more books (mix & match). Please contact the Manager of Inventory and Subscriptions for instructions on receiving your discount.