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‘WE FOCUS A LOT ON THE OUTCOME’ Mohammad Khalid, Johnson Controls OPERATING OUTSIDE DESIGN CONDENSER FLOW Dan Mizesko, President, Dalkia US Chillers, USA VERSUS EMPOWER HOSTS DISTRICT COOLING STUDY TOUR FOR UNEP EUROVENT MIDDLE EAST TO CONDUCT TRAINING IN F-GAS CERTIFICATION August 2024 US$ PUBLICATION LICENSED BY IMPZ PROPONENT OF BATTERY ENERGY STORAGE SYSTEM LIKENS IT TO A SWISS ARMY KNIFE “FOR ITS VERSATILITY, FLEXIBILITY” •Diriyah signs USD 2 billion contract for Northern District project •Carel releases white paper on adiabatic humidification •Arkema’s Thierry Le Henaff wins 2024 ICIS CEO of the Year Award •ASHRAE, World Filtration Institute sign MoU •Chemours to present at Chillventa 2024VOL. 19 NO. 08 AUGUST 2024 Q&A ‘WE FOCUS A LOT ON THE OUTCOME’ Mohammad Khalid, Vice President and General Manager (Middle East and Africa), Johnson Controls, discusses the company's long-term strategic viewpoint MARKET FEATURE THE SUM OF ALL THE PARTS Industry stakeholders discuss how collaboration fuels technological innovation in HVACR accessories. PERSPECTIVE OPERATING OUTSIDE DESIGN CONDENSER Dan Mizesko, President, Dalkia US Chillers, USA, discusses design condenser flow rates to maintain chiller efficiency 06 14 18 www.ccme.news 3 REGULARS 22 Regional News 32 Global News 42 Quoteyard 04 eDItor'S note Melbourne mayhem Battery energy storage versus COVER STORY page Nader Abdellatif, Senior Vice President and HUB Manager, Hitachi Energy, discusses Energy Storage Systems (BESS) as the preferred solution August 2024 4 T he news of a Legionnaires’ Disease outbreak in early August in the state of Victoria, in Australia, affecting over 70 people, with one of them dying, was disturbing. According to state health authorities investigating the incident, the needle of suspicion pointed to cooling towers in an industrial district of Melbourne. In the aftermath of the outbreak, the authorities inspected and disinfected over 100 cooling towers in the area, not wanting to wait for the suspicion to be confirmed. They were also wary of the fact that the number of those affected might rise, considering the disease’s incubation period. The outbreak stirred up memories of the first ever edition of District Cooling Dialogue (“DC Dialogue”), in May 2007, in Dubai. A key area of discussion during the event was on proper maintenance of cooling towers, with Peter Tracey, then working as Operations Manager at BAC Balticare Gulf, holding court on the subject. With his voice betraying a sense of deep concern, Tracey spoke on the importance of microbiological control. Speaking on bacteria that live in the water, he said: “Particularly, what we look to control is Legionella pneumophila, which causes Legionnaires’ Disease. Algae is another big problem in this part of the world. Algae is a constant problem. Once it ‘bites’, it’s not that easy to rectify.” Tracey went on to say that it was reassuring to see District Cooling companies step up to the plate. The benefit of having a District Cooling company, he said, is not only the ability to run the system efficiently but also in a safe manner. “Now, since a lot of these District Cooling schemes that are coming up now are actually in densely populated areas, the risk of Legionnaires’ Disease is that much higher,” he said. “And the other factor that is important to a District Cooling company is plant longevity. The old idea that you can install a cooling tower and, three years from now, you can replace it, is not practical anymore.” Many more topics came up for discussion in that pioneering conference in 2007, with Climate Control Middle East gathering every single word to produce quite a seminal booklet on O&M of District Cooling schemes. And as we set out to conduct the 10th edition of the conference, it is pleasing to note the strikingly similar data- and insight-heavy nature of discussions, leading to implementable, actionable responses and outcomes. The fact that the threat of Legionnaires’ Disease hangs heavy over the head means a need for vigil and for intense discussion to keep complacency at bay. Jeremy McDonald Principal of Guth DeConzo Consulting Engineers, in New York, writes on IAQ and building tracing. He served as the technical consultant to the New York State Energy Research and Development Authority in development of an IAQ guideline for Higher Education in NY: “Covid-19 Response Guide, State University of New York”. Dan Mizesko Managing Partner/President, US Chiller Services International, writes on issues relating to chilled water systems, including operation & maintenance. Dalip Singh Senior Technical Analyst, AHRI MENA, writes on HVACR-specific regulation issues. Dr Iyad Al-Attar Independent air filtration consultant, writes on specific science and technology issues relating to Indoor Air Quality, including airborne particles. Omnia Halawani Co-Founder & Co-CEO, GRFN Global, writes on MEP consultancy- related issues. Krishnan Unni Madathil Auditor, Bin Khadim, Radha & Co. Chartered Accountants, carrying out an analysis of the market, writes on business opportunities for the HVACR industry. Editor Surendar Balakrishnan surendar@cpi-industry.com Features Writer Hamna Sheikh hamna@cpi-industry.com Online & Social Media Nivedita Vijayan marketing@cpi-industry.com Advertising Enquiries Frédéric Paillé +971 50 7147204 fred@cpi-industry.com Judy Wang Our representative in Asia (except India) +852 307 80 826 judywang2000@vip.126.com Deep Karani Our representative in North America +1 365 885-6849 deep.karani@cpimediagroup.com Design Head Ulysses Galgo uly@cpi-industry.com Webmaster Chris Lopez chris@cpi-industry.com Database/Subscriptions Manager Purwanti Srirejeki purwanti@cpi-industry.com Published by Founder, CPI Media Group Dominic De Sousa (1959-2015) Co-Founder & Commercial Director Frédéric Paillé fred@cpi-industry.com EMPANELLED COLUMNISTSCo-Founder & Editorial Director Surendar Balakrishnan surendar@cpi-industry.com Head Office PO Box 13700, Dubai, UAE Web: www.cpi-industry.com Printed by: Jaguar Printing Press L.L.C © Copyright 2024 CPI Industry. All rights reserved. While the publishers have made every effort to ensure the accuracy of all information in this magazine, they will not be held responsible for any errors therein. Melbourne mayhem Visit our website: climatecontrolme.com/digital Also available at ‘WE FOCUS A LOT ON THE OUTCOME’ Mohammad Khalid, Johnson Controls OPERATING OUTSIDE DESIGN CONDENSER FLOW Dan Mizesko, President, Dalkia US Chillers, USA VERSUS EMPOWER HOSTS DISTRICT COOLING STUDY TOUR FOR UNEP EUROVENT MIDDLE EAST TO CONDUCT TRAINING IN F-GAS CERTIFICATION August 2024 PUBLICATIONPUBLICATIONPUBLICATION US$ PUBLICATION LICENSED BY IMPZ PROPONENT OF BATTERY ENERGY STORAGE SYSTEM LIKENS IT TO A SWISS ARMY KNIFE “FOR ITS VERSATILITY, FLEXIBILITY” • Diriyah signs USD 2 billion contract for Northern District project • Carel releases white paper on adiabatic humidification • Arkema’s Thierry Le Henaff wins 2024 ICIS CEO of the Year Award • ASHRAE, World Filtration Institute sign MoU • Chemours to present at Chillventa 2024 Get the next issue of Climate Control Middle Eastearly! Surendar Balakrishnan Editor @BSurendar_HVACR Climate Control Middle East magazine proudly supports the UAE President’s initiative of extending the ‘Year of Sustainability’ to the whole of 2024. EDITOR’S NOTEwww.ccme.news 5 RAMESH PARTABRAI HIRANANDANI OBITUARY R AMESH Partabrai Hiranandani, Founder, Ramesh Hira Traders (now known as Hira Industries LLC), passed away on July 29, 2024. He was 79. Born in Karachi in 1945, he migrated to India with his parents during the Partition of India into India and Pakistan, in 1947. He studied Mechanical Engineering at Veermata Jijabai Technological Institute (VJTI), in Mumbai (then known as Bombay), in the western Indian state of Maharashtra, after which he joined Blue Star. In 1975, he moved to Dubai, UAE, where he took up an assignment as Sales Engineer at Al Futtaim. Five years later, he started Ramesh Hira Traders, in Sharjah, UAE, launching the Rubatex brand of rubber insulation products. He not only gradually spread the business throughout the Gulf region and Africa but also introduced several new products in the Middle East, such as Mupro pipe supports, Durodyne ducting accessories and Isceon refrigerant gas. In 2001, he handed over the business to his sons, Girish Hiranandani and Manish Hiranandani, after which the company transitioned into manufacturing. Today, it manufactures products related to the construction industry in India, the UAE and Vietnam; according to company sources, it will begin operations in the United States in 2025. The Group has more than 1,600 employees of 40 nationalities, 14 production units and 30 sales offices, with the products distributed the world over. August 2024 6 A NYONE who has read my column, License to Chill over the past many years knows I have been a huge proponent of “chiller retro- commissioning/re-commissioning and non-chemical water treatment. To be frank I have been a proponent of non- chemical water treatment since 1992, when I was an engineer for the Kuwait Oil Company and saw just how scarce potable water was, and how destructive and damaging chemical water treatment was. So, I was always looking for a non- chemical alternative to chemical water treatment that prevented corrosion, scale and biological contamination. It was not until 1999, when working in California for Siemens Building Technologies as Director of Mechanical Services (Chiller Services) that I came across Pulse Power Non-Chemical water treatment at an industry conference and discovered, without question, its positive impact on any chilled water plant that uses the technology and its huge environmental and water savings impact. (A side-note: My team and I specified and installed the Pulse Power technology at the ISF District Cooling plant in Qatar; since then, it has been recognised not only by Kahramaa but internationally, as well, as a means to saving substantial water and power, and as a major contributor to reducing hazardous discharge into the Qatar wastewater systems. The Qatar ISF plant operates below 0.7 kW per ton (total plant load, including chillers, towers, all pumps, lighting, elevators and plug loads. This is due to two major contributors.) Okay, having stated the above, I would like to highlight the following before I get into the condenser water flow topic. We at US Chiller Services (USCS; now called Dalkia US Chillers) pioneered, and have developed and implemented centrifugal chiller retro- and re- commissioning services since 2003 and have seen firsthand the savings from retro-commissioning recently commissioned chillers and much older chillers. No matter what the age of the chiller, retro-commissioning has delivered from between 15% and 50% savings, with 30% being the norm. I also introduced Non-Chemical Pulse Power water treatment to the region, and we at USCS (now called Dalkia US Chillers) have successfully installed over 150,000 tons of non-chemical water treatment. I wish it was more, and hopefully, the industry will further embrace the technology, as it would be a massive benefit to not only chilled water plant owners but also to the entire region. All right, now let’s get to the topic at hand. In previous License to Chill articles, I had explained why most chillers operate above their design efficiency. One major issue is the chiller heat transfer surfaces LICENCE TO CHILL Dan Mizesko is President, Dalkia US Chillers, USA. He may be contacted at dan.mizesko@dalkiasolutions.com and how they significantly influence a chiller’s efficiency. Please allow me to summarise, as follows… A chiller’s efficiency is affected most by its resistance to heat transfer, the Leaving Temperature Difference (LTD) of its heat exchanger tube surfaces, more than anything else. So, it is imperative that the chiller’s condenser tube surfaces have the lowest resistance to heat transfer possible. Another term would be Approach Temperature. LTD is the difference in temperature between the saturated refrigerant temperature and the leaving water temperature. The temperature difference between the refrigerant and the fluid is the driving force to overcome heat transfer resistance. Resistance to heat transfer consists of four components related to the overall heat transfer coefficient (U): ■ Refrigerant film resistance ■ Tube wall metal resistance ■ Fouling deposits resistance ■ Fluid Film resistance at 10FPS velocity The effect of Water Flows on tube's resistance to heat transfer Fluid flowing through a tube forms a static film or boundary layer, which has zero velocity at the tube wall. This film acts as an insulator and hinders heat transfer. Chillers suffer significant energy inefficiencies on being made to do so, says Dan Mizesko August 2024 8 The lower the velocity, the thicker the boundary layer becomes, which increases the resistance to heat transfer. Fluid tube velocities should be kept between 3 FPS and 12 FPS. Velocities less than 3 FPS result in laminar flow with thick boundary layers, dramatically increasing the fluid film resistance. Fluid tube velocities more than 12 FPS increase tube erosion and should be avoided. For erosion to occur, an agent must penetrate the fluid layer. These agents may be chemical, mechanical or a combination of both. Chemical agents attack the tube, and mechanical agents cause damage by impingement of entrained gas bubbles or suspended materials. I still am often asked by consultants and plant owners to investigate implementing Variable Condenser Water Flow for them at their chiller plants, and more often than not I try to dissuade this from being implemented. The efficiency of a centrifugal chiller depends on design flow rates, and any deviation from these design flows can lead to inefficiencies, including increased energy consumption and reduced tonnage production. Low condenser Flow/Variable condenser water flow If the condenser flow rate is below design, the saturated refrigerant will not be cooled, leading to higher condenser temperatures and pressures. This will lead to increased compressor power, thus increasing chiller energy consumption. Variable flow in the condenser is not recommended by some chiller OEMs, as it generally raises the energy consumption of the system by keeping the condenser pressure high in the chiller. Although reducing the condenser flow will Improve the cooling tower LMTD – and a smaller tower can be used – the savings from this strategy will not offset the increased cost of the chiller’s increased power consumption. In addition, if implementing this on an existing plant that has been designed for 3 GPM operation, cooling towers typically have narrow ranges of operation with respect to flow rates and will be more effective with full design flow versus the lowered flow. Another major consideration not generally mentioned by proponents of reduced condenser water flow is that the rate of fouling in the condenser will increase at lower water velocities associated with variable flow. This will not only increase maintenance costs but also increase power consumption tremendously. My recommendation is if you want to employ variable condenser water flow, you ought to reconsider this, as the potential drawbacks – such as reduced heat transfer efficiency, control complexity, system compatibility as well as chiller performance issues – are a major concern. Not to mention the increased condenser and tower maintenance as well as chiller and tower reliability concerns. My advice is that you stick to the NPLV/IPLV design condenser flows, and you will have the most efficient chiller you can have – that is, after retro-/re- commissioning those chillers! CPI Industry accepts no liability for the views or opinions expressed in this column, or for the consequences of any actions taken on the basis of the information provided here. LICENCE TO CHILL www.refrigbuyersguide.com FOR ADVERTISING OPPORTUNITIES EMAIL: advertising@cpi-industry.com THE LARGEST DATABASE OF REFRIGERATION PRODUCTS & SUPPLIERS IN THE MIDDLE EAST Your reference hub to the refrigeration industry in the Middle East Refrigeration BUYERS’ GUIDE 2025 LOOKING FOR REFRIGERATION PRODUCTS?10 th EDITION OFFICIAL PUBLICATIONPRODUCER THEME: A need for transformational change in District Cooling for Saudi Arabia to raise the bar on decarbonising existing cities and to get things right from the get-go in new cities www.ccme.news/event/dc-dialogue 2 DAY SESSION ON DISTRICT COOLING 15 OCTOBER 2024 Crowne Plaza Minhal, Riyadh, KingdomofSaudiArabia OFFICIAL PUBLICATIONPRODUCER THEME: Getting things right from the get-go in the new wave of mega developments in the Kingdom of Saudi Arabia 1 DAY SESSION ON BROAD HVAC APPROACHES 14 OCTOBER 2024 Crowne Plaza Minhal, Riyadh, KingdomofSaudiArabia www. ccme.news/event/c3 PRINCIPAL STRATEGIC KNOWLEDGE PARTNER DIAMOND SPONSORS BRONZE SPONSOR STRATEGIC HVACR RECRUITMENT PARTNERSTRATEGIC KNOWLEDGE PARTNER EXHIBITOR SILVER SPONSOR BRONZE SPONSORS STRATEGIC HVACR RECRUITMENT PARTNERSTRATEGIC KNOWLEDGE PARTNERSPRINCIPAL STRATEGIC KNOWLEDGE PARTNER DIAMOND SPONSORSNext >