BSEE-JUN21-P38-42 Whats New_Layout 1 21/05/2021 11:01 Page 40


BSEE Advertorial Excool has been looking at New Technology for Indirect


water resources. Thirty­six countries around the world already suffer from high or extremely high­water stress. Concern over water usage has generated an interesting debate around sustainability for those data center operators evaluating their cooling system options. Data centers can have a heavy demand for


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water. IT equipment requires enormous amounts of energy to operate whilst generating considerable amounts of heat. The cooling process of traditional Direct and Indirect Evaporative Cooling solutions often involves that as soon as outdoor ambient conditions allow the solutions will be evaporating water for cooling with cooling towers or evaporative coolers. When water is cheap and plentiful, this makes sense due to savings in electricity and the cost benefits. It is important to understand that by


reducing the water consumption at the data center, the water consumption's incumbrance goes back to the source at the thermoelectric power generation process.


Adiabatic/Evaporative Cooling Solutions for Data Center Applications The average water consumption factor


s demand for energy rises, the power sector’s water usage is expected to increase even further, straining scarce


for electricity in the United States is 0.576 gallons/kWh*. Using water at the data center reduces the inherent electrical losses associated with the power required for the cooling between the power generation plant and the data center. Traditional Direct and Indirect


Evaporative Cooling solutions for data centers across the world have shown that they significantly reduce energy consumption compared to other technologies, but historically have resulted in relatively high­water consumption. The reason that evaporative cooling solutions are so effective is that water is a more efficient medium than air for removing heat because evaporation increases the cooling process. The effectiveness of evaporative cooling either direct or indirect is very location­dependent since regions with a drier less humid climate results in greater efficiency of the system. For Data Center designers, it is very often


thought that there is no middle ground for data center cooling. The final decision will often drive the final solution based on the key demands of the client. The options invariably are either. Keep energy consumption low and consume


significant volumes of water. (typically, Direct, or Indirect Evaporative cooling system). High energy consumption and no water usage. (typically, chilled water, DX or pumped refrigerant) Utilizing data center cooling solutions that


can efficiently and effectively operate in free cooling mode in low to mild external temperatures means data center mechanical systems require less energy. The dilemma often occurs once free cooling is no longer available. Traditionally a cooling system would either


switch to a mechanical DX or chilled watercooling mode or an adiabatic/evaporative mode (including mechanical DX mode for top­ up) offering little or no flexibility.


Recent developments in Indirect Evaporative Cooling technology have seen the emergence of a new type of cooling solution. The new technology allows the data center operators to determine which method or combination of cooling methods to cool their data center most effectively & efficiently with the flexibility to change as the internal and external conditions vary. Such as an increase in IT load or as power and water costs increase and decrease. Excool understand differences and


understands there is not a ‘one size fits all method’ but with emergence of new technologies the options are of water vs no water are no longer polar opposite, and a flexible middle ground can easily be achieved. When designing data centers for a


sustainable future, the client can be positive that water use in the cooling of an adiabatic/evaporative solution can be closely aligned with the efficiency and sustainability goals of low energy, reducing carbon emissions and conserving water.


Prysmian Group to launch ECO CABLE


www.excool.com Omnie package heats low energy hillside house in North Yorkshire A


contractor developer, targeting the high end property market in the area around the Yorkshire towns of Ripon


and Harrogate, is utilising a renewables and underfloor heating package from sector specialist OMNIE to provide all of the space heating and hot water, as well as to maintain indoor air quality. Hotham Construction Services Limited was set up just over a year ago by Martin Hotham, though his association with Exeter based OMNIE goes back far further, through his experience as a plumbing and heating contractor.


For the new­build five­


bedroom house hear Ripon, Hotham Construction is making use of insulated concrete formwork (ICF) for the walls of the half buried structure, as well as a highly insulated pitched roof supported by JJI engineered timber joists, to keep heating loads to a minimum. OMNIE therefore determined that a 7kW LG Therma V air source heat pump would be sufficient to feed the Ultimate and OgeeBoard UFH circuits, along with all of the domestic hot water requirements. OMNIE also designed and supplied a full MVHR system for the house, utilising a Zehnder unit offering industry leading efficiency standards. Martin Hotham commented: “I have been installing OMNIE air source heat pumps and underfloor heating, as well as the Zehnder MVHR systems, in properties for over five years and had no hesitation in going to them for this house we are building on behalf of a private client. OMNIE’s technical team has not only provided all of the specifications and detailed layout drawings for the build, but trained our people in the installation of the LG heat pumps, as well as a visit last year to the ALPHA INNOTEC KASSENDORF factory in Germany.”


industry announces the launch of its ECO CABLE label, the first proprietary green product label in the cable industry, to support utilities and distributors strengthen their green supply chain and value proposition. “The ECO CABLE product label is aimed at proactively addressing the greener and greener expectations of the market and of all stakeholders”, explains Massimo Battaini, Prysmian Group Chief Operating Officer. “With this initiative, the Group aims at strengthening the Group’s


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rysmian Group, world leader in the energy and telecom cable systems


sustainability strategy and active role as a promoter of a sustainable development as well as at accelerating the Group’s race to net­zero CO2 emissions”, he adds. The ECO CABLE label can be


easily cross­referenced and paired with additional certified sustainability protocols like the EPD (Environmental Product Declaration) and the EU Ecolabel (the environmental excellence label for products and services meeting high environmental standards throughout their life cycle).


www.prysmiangroup.com


Scolmore gets serious in the smart home market


“Then towards the end of the job, when


we have completed installing the heat pump, OMNIE’s engineer will come to carry out the commissioning work.


In terms of


the underfloor heating here, our upper floor (at ground level) construction makes use of metal web joists which we cover with 18mm chipboard to create a safe platform, before we lay a waterproof membrane and the OMNIE Ultimate boards followed by the pipes and the levelling compound. It offers a very good base for a tiled floor.” Developed in conjunction with Tilemaster


Adhesives, the 18mm thick, precision routed XPS insulation panels feature a special ‘diffuser channel’ concentric to the pipe runs. These significantly increase contact and heat transfer from the pipes when the Levelflex self­ levelling compound is laid across the installed 12mm PE pipework. Ultimate’s design further


40 BUILDING SERVICES & ENVIRONMENTAL ENGINEER JUNE 2021


enhances bond efficiency and resists subsequent tile movement; while the boards’ ease of installation and overall low construction depth mean the product fits within all three of OMNIE’s LAYFAST, ULTRALOW and TILEOVER technology categories. Then for the lower ground or basement, OMNIE’s OgeeBoard XPS panels were laid throughout the bedrooms, bathrooms and a generous sized gymnasium which adjoins the home’s plant room. They are available in thicknesses of 35, 50 and 75 mm to take 16.5mm thick PE­ RT pipe laid directly into the routed channels which protect the circuits from damage until a screed is laid. This gives good heat transmission though output depends on the final floor covering chosen as well as water flow temperature.


www.omnie.co.uk


products has been created to simplify and streamline connected home products – lighting controls, smart sockets, security cameras and sensors.


S It utilises Zigbee technology – one of the most widely adopted smart


home communication protocols. Zigbee certified devices require the Click Smart+ Hub and communicate with each other using a mesh network which creates multiple pathways for the connection of multiple smart home devices without compromising signal and communication range. A key benefit of Zigbee and the new Click Smart+ range is that there is no requirement for a signal repeater, as all the hard wired devices have repeaters built in. Installation is simple and flexible, with no additional cables or wall


cutting required, making it ideal for existing or newly constructed buildings. The bespoke Click Smart+ App gives householders ultimate control of the smart devices, which can also be operated through voice control in conjunction with a smart speaker. The range comprises the Smart Gateway Hub – the control centre of all


Zigbee connected devices, one­gang and two­gang smart sockets, a plug­ in smart socket, switching and dimming receivers, camera, PIR sensor, window, and door sensor, plus a temperature and humidity sensor.


www.click­smart.com/home Read the latest at: www.bsee.co.uk


colmore’s comprehensive range of Click Smart+


quality (IAQ), with the installation of a new air handling unit at its HQ. The ventilation specialist has been campaigning for IAQ to become a primary focus across the built environment in the UK, urging businesses to assess their ventilation strategies as we move out of lockdown. These echo wider challenges within the industry to address indoor pollution, in a way that minimises energy expenditure and maintains thermal comfort for occupants. In­keeping with this ethos, Elta Fans has taken the opportunity to


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upgrade its own ventilation system at its head office in Kingswinford. The installation of a PREMA 540 in October last year has ensured that IAQ within the building remains at a good level, all the while delivering on the notion that high quality air doesn’t have to mean big energy bills. Ana Cross, AHU Product Manager at Elta Fans, comments: “We


started this project back in April 2020, using the reduced occupancy in the building as an opportunity to make changes to the physical space. We opted for a PREMA 540 with an electric heater to ensure that we could maintain ambient temperature for staff, all the while improving our IAQ.


www.eltafans.com


WHAT’S NEW


New ventilation cuts CO2 at Elta Fans’ head office


lta Fans has reinforced its commitment to improving indoor air


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