Editorâ€™s Corner Dear Journal Reader, CTI meets in Memphis this July. We look forward to seeing you there. Following the recent Editorâ€™s Corner format, some of the highlights of recent activity are as follows: So far, California has, after input from CTI and other organizations, stayed true to the term sheet with DOE in which heat rejection equipment is excluded from their fan regulations per the CTI definitions (Title 20). Title 24 covers building energy efficiency, and we expect them to re-open pursuit of increased minimum efficiency for cooling towers, with which CTI is engaged. ASME proposed a change to remove the exemption for small diameter tubing and equipment to the Boiler and Pressure Vessel Code. For many years, this exemption has led to the design of small diameter tubing and equipment to other standards without adverse safety issues. CTI, along with multiple other organizations, commented against the proposed rule change. At a meeting this fall, the governing ASME committee effectively deferred any action to a time after the 2019 code is final. ASME did not drop this, and it is already in discussion in the ASME committee for the next cycle. CTI is engaged.
On the Legionella management front, the CTI and ASHRAE guidelines are moving toward completion this year. Another document by NSF International, Standard 444, was in progress for multiple building water hazards, including Legionella. This standard is now ASHRAE SPC514, with a target of completion within 2 years. The membership, which includes some previous NSF members and new members under the ASHRAE process, is in process, and the committee will begin shortly as an ASHRAE standards committee. The new Pitot tubes using the tip design resulting from the CTI funded research project are now in use on a global basis. Additional research is in progress to refine the application of calibration data using the new design. As many of you know, quite a few of you in our industry have been sharing old pictures and other information about the early history of cooling towers with me. Please continue to share what you find. I hope to have some things to share in 2019. FYI, some pre-1900 pictures from Europe and the United States are in hand so far, as the oldest. Respectfully, Paul Lindahl, CTI Journal Editor
CTI Journal, Vol. 40, No. 2