NO. 3 / 2020 INTERNATIONAL MAGAZINE ON DISTRICT HEATING AND COOLING DISTRICT COOLING Sign up to receive Hot Cool Contents FOCUS ON DISTRICT COOLING 4 7 GROUNDWATER! By: Lars Hjortshøj Jacobsen and Rasmus Victor Fauerholdt HOT WASTE FOR GREEN COOLING By Lars Sønderby Nielsen 10 COOL & GREEN 12 THE FOUR GENERATIONS OF DISTRICT COOLING 17 3 18 22 27 By Uffe Schleiss PREFACE DISTRICT COOLING IS HOT! District cooling is hot! The need for air conditioning in the world is rising due to population growth, urbanization, and increasing prosperity. The UN Intergovernmental Panel on Climate Change, IPCC, estimated cooling demand for buildings to increase from 300 TWh in 2000 to 4,000 TWh in the year 2 The planet we live in contains a natural and inexhaustible resource for cooling: GROUNDWATER! By: Lars Hjortshøj Jacobsen, CEO, ATES A/S and Rasmus Victor Fauerholdt, CEO, Ingenioer Huse A/S A/S Using groundwater for energy purposes - heating or cooling - can make massive energy savings and reduct Sustainable energy, right beneath your feet Significant reduction of energy consumption and emissions Groundwater is for drinking water ATES systems are essential for countries to achieve their targets for global climate protection by reducing greenhouse gas emissions, increasing the use of susta st e n e e r g The hotel in the world Crown Plaza Copenhagen Towers was built in 2009 and awarded in 2010 as the world's greenest hotel. The hotel uses a third of the energy compared to similar hotels. One of the reasons is the ATES system providing the hotel with sustainable energy from the undergr Cooling Plant at the new University Hospital, AUH in Denmark. Production from both compression and absorption chillers meet the hospital cooling demand in the summer period, where the surplus heat is rejected in cooling towers. In the winter, the surplus heat is utilized in the district heating syst Use of free sources and waste energy Solar Cooling Free sources should always have priority for cooling purposes. Free cooling can be obtained from ground sources, seawater, lakes, or similar depending on local conditions. Besides, the warm summer period often offers free high-temperature sources In new developments, buildings can be designed for integrated high-temperature cooling, which lowers the cost and eases the integration of free cooling and optimized chiller design. Absorption technology can provide a supply water temperature down to 6 C without problems. This requires that the extr COOL & GREEN By Uffe Schleiss, technical manager, Høje-Taastrup District Heating (HTF) In Høje Taastrup, a suburb of Copenhagen, the local district heating company Høje- Taastrup District Heating Company (HTF) is successfully supplying district cooling (DC) to companies and office buildings. The fi by HTF provides cooling a N-SITE O R E T N E C G IN L O O MOBILE C willing needs cooling and is e when a customer tic no rt r sho at dy ablished, the custome It is vital to be rea n system. When est tio era rig ref l ua t en ivid s replacem to invest in an ind til worn out and need in district coo The four generations of district cooling By: Anders Dyrelund, senior market manager, Ramboll and Frederik Palshøj Bigum, energy planner, Ramboll There is a growing need for cooling, and district cooling is like district heating, a natural part of the urban infrastructure in smart cities. The benefi ST GENERATION Interconnecting buildings with a network saving capacity What is the real demand for cooling in buildings? Often, even the designers and the facility management do not know. Often modern buildings full of big data lack the essential information of the actual thermal cooling demand. Th ND GENERATION Chilled water torage facilities By monitoring the actual cooling load and operation of the ambient cooling sources and the chillers to the network and the fluctuating electricity price (and heat prices in case of absorption chillers) hour by hour, it is possible to simulate the profi TH GENERATION Combined heating and cooling The efficient third generation cooling-only system can be even more efficient especially in case there is a heat demand for heating buildings, for hot tap water or for industrial processes, e.g. desalination. In that case it is a shame to waste the heat i From zero to 4th generation Going from individual buildings to DC through all 4 generations can be considered as a strategy for investing step-by-step. It is also a way to identify all the benefits of DC one by one. This is illustrated in the table below for a typical cluster of buildings. Strategy CARLSBERG BYEN - probably the coolest place in town! By Søren Berg Lorenzen, Head of Planning - Energy, Frederiksberg Forsyning In 2008 the central part of the Carlsberg brewery moved the majority of its beer production away from the brewery's original site in the center of the Danish capital Copen Why Pre-insulated Pipe Systems for District Cooling? By Peter Jorsal, Product & Academy Manager, LOGSTOR Worldwide the need for comfort cooling buildings is at least the same as the need for heating buildings. The need for comfort cooling buildings is self-evident in countries like e.g. the Middle All in all - there are a lot of reasons to choose pre-insulated pipes for district cooling pipe systems District cooling systems can reduce energy consumption by up to 50% ... and up to 65% reduction in CO2 emission The Challenges of District Cooling The big challenge is the large investments fo The Pre-insulated Pipe System A pre-insulated pipe system for DC is designed in insulation series 0, 1 or 2, where series 0 and 1 are the most frequently used insulation series. By comparison, a pre-insulated pipe system for district heating is designed in insulation series 1, 2 or 3. This means tha Different Types of District Cooling Projects Project Yasmeen City in Doha: This project comprises a DC supply of a new city in the making Yasmeen City. Yasmeen City will be the home of 18,000 inhabitants and will comprise apartment complexes, commercial areas, hotels, hospitals etc. to be supplied HACKED In 2017 Næstved District Heating experienced a cyberattack. After this incident, the district heating company has taken its IT security to a higher level to minimize future attacks. 22 HOTCOOL no.3 2020 By: Marianne Holstein Lindorff, Marketing Manager, ABB A/S In 2017, Næstved District Heating Company (NDH) experienced a cyberattack. Suddenly two servers couldnt be accessed because the files on the servers were encrypted and locked. When trying to open the encrypted files, a message came up: Imp Q&A with cyber security expert Benny Hansen, digitalization and cybersecurity lead at ABB Danmark, explains how to reduce the risk of cyberattacks. How does a hacker typically breach a network? - People tend to view plants and factories as closed systems, but the reality is that there are many w Facts about Næstved District Heating - Established in 1965 - 5,400 customers - 18 employees - 98% of the heat comes from waste incineration - 2% from natural gas - 55% of Næstved is supplied with district heating (DH) - The DH network in Næstved is still expanding, and customers are expected to incr Tell us how you want to hear from us SCAN QR CODE Old Fashioned is Hot! It's cool if you still want to receive Hot Cool as a printed magazine. Just let us know. Scan this QR-code with your smart-phone camera and follow the instructions. Stay on top of industry with District Energy Academy by Danf M e mber com pany profil e : AALBORG CSP A/S Changing energy around the world with customized renewable energy solutions Aalborg CSP A/S is a leading developer and supplier of innovative renewable energy technologies aiming at changing the way energy is produced today. Relying on extensive experien Pre-insulated pipes from LOGSTOR as the obvious choice for your District Cooling Network When choosing pre-insulated pipe system for your District Cooling network, you achieve the following benefits: Four reasons why you should choose LOGSTOR pre-insulated pipes for your District Cooling network: