IN FOCUS Daikin launches multi-purpose unit D
aikin Applied UK has launched a polyvalent unit capable of delivering simultaneous cooling and heating in commercial and industrial applications. Polyvalent, or hybrid heat pump, systems are proving increasingly popular because of their
ability to cope with complex building requirements in a wide range of climatic conditions while also minimising environmental impact. Daikin’s multipurpose four-pipe EWYS-4Z employs inverter-driven single-screw compressors and operates
with the low global warming potential (GWP) refrigerant R-513A. Its performance is also boosted by highly energy efficient variable frequency drive (VFD) and variable volume ratio (VVR) features. The polyvalent units deliver capacities from 400 to 800 kW in cooling and heating mode with a
total energy efficiency ratio (TER) as high as 8.00. They operate in outdoor temperatures from -18°C to +50°C and provide chilled water in a range between -8°C (with a water/glycol mixture) to +20°C. Heating water temperature is available from +30°C to +60°C.
Versatile The Daikin EWYS-4Z units are an extremely versatile way of controlling indoor temperature and are well suited to buildings with variable temperature needs, such as hotels, hospitals, and large offices. They capture heat recovered when producing chilled water, which also makes them a popular addition to the industry’s range of solutions for reducing carbon emissions from buildings. The range is also available with
noise attenuation achieved through lower fan speeds and a specially designed soundproof compressor cabinet. Enhanced insulation on the refrigerant pipes and special compressor connections also significantly reduce vibration. The EWYS-4Z is equipped with
two Shell & Tube heat exchangers on the waterside: one always operates as an evaporator (cold heat exchanger) and the other as a condenser (hot heat exchanger). Copper-aluminium (Cu/Al) fin and tube coils are used to dissipate excess cooling or heating energy. These design features allow the
Daikin polyvalent units to simultaneously meet cooling and heating requirements by following two setpoints simultaneously all year round, adapting to changing climatic conditions. Unlike reversible heat pumps, a multi-purpose unit does not require seasonal changeover and by controlling the two refrigerant circuits independently, it can respond quickly and accurately to a building’s cooling and heating demand patterns.
www.daikinapplied.uk L
eading ventilation manufacturer Vent-Axia is welcoming the third, World Ventilation Day, #WorldVentil8Day, a day dedicated to recognising and promoting the importance of
ventilation and indoor air quality (IAQ). This year World Ventil8 Day will be held on Friday 8th November 2024, with the theme of ‘Enabling Action’. The day aims to highlight ventilation’s crucial role in healthy buildings and a healthy life, with a particular focus on how to help people improve ventilation in their buildings whether it be a home, a school, a workplace or a social space. World Ventilation Day was initiated by a group of researchers
and professional bodies who are passionate about the importance of ventilation. It is vital to have effective ventilation that improves IAQ and in social housing this protects residents and provides a healthy comfortable environment. This is evident from the tragic death of the toddler Awaab Ishak and the forthcoming Awaab's Law which is coming in this Autumn. On World Ventil8 Day, Vent-Axia is therefore continuing to recommend three key actions to take to improve IAQ: Reduce the number of pollutants introduced into the air; Dilute the pollutants in the air by ensuring there is adequate ventilation introducing fresh clean air into the home and buildings; and Purify by adding an air purifier to remove the remaining pollutants from the air. “Poor IAQ affects the health of everyone. No one should
live in a home plagued by the twin blight of condensation and mould and effective ventilation is vital to help tackle the problem. We spend up to 90% of our time indoors, it is therefore crucial to reduce indoor air pollution,” said Natasha King, Product Manager at Vent-Axia. “Our message of reduce, dilute and purify is simple but essential for achieving a healthy indoor environment. We are delighted to support World Ventilation Day again and continue to raise awareness of the vital role ventilation plays in our homes and businesses.” This year’s event is well timed after the government announced on 22 September 2024 that it is launching a consultation on a new Decent Homes Standard for the rented sectors as soon as possible, as well as bringing forward legislation for Awaab’s Law in the social rented sector this autumn. Tackling this issue is more crucial than ever, with Awaab’s Law requiring hazards such as damp and mould to be investigated and remedied to set timescales. This, combined with the Decent Homes Standard consultation, will look to ensure safe, healthy and secure housing and prevent the serious health risks that damp and mould pose. These new measures are in addition to the Homes (Fitness for Human Habitation) Act 2018, with landlords already having a legal requirement to provide rental properties
Ovia introduces higher energy class GU10 LED Lamps
W
ith energy efficiency continuing
to drive product development in the lighting sector, Ovia announces the introduction of new GU10 Glass LED lamps which boast a higher energy class than previous models. Designed to meet growing demands for optimal energy savings, the launch of the new GU10 LED lamps reinforces Ovia’s commitment to providing innovative and sustainable lighting solutions for a wide range of applications. Four new GU10 LED lamps have been added to the Ovia range, offering Class A and Class B energy ratings:
• 2W Energy Class A, non-dimmable lamp with a 360 lumen output and 3000k colour temperature.
• 2W Energy Class A, non-dimmable lamp with a 360 lumen output and 4000k colour temperature.
• •
2.6W Energy Class B, dimmable lamp with a 410 lumen output and 2700K colour temperature. 2.6W Energy Class B, dimmable lamp with a 430 lumen output and 4000K colour temperature.
These lamps offer installers superior energy efficiency, long-lasting performance, and exceptional brightness, making them an ideal solution for both residential and commercial environments. More information on these products can be found on the Ovia website.
www.oviauk.com Vent-Axia Enables Action this World Ventilation Day
that are fit for human habitation, including the need for effective ventilation and freedom from damp and mould. Vent-Axia is sharing its expert advice with landlords to help ensure they protect their residents. The company has been committed to improving indoor air since 1936 and offers a wide range of energy efficient ventilation and air purifying solutions to suit each home or building. For social housing and private landlords there are different types of ventilation available depending on the property type and whether there is already a mould problem, with Vent-Axia able to offer a range of effective, energy efficient ventilation solutions. For social housing landlords requiring further ventilation advice visit Vent-Axia’s social housing hub:
https://www.vent-axia.com/social-housing. For further information on all products and services offered by Vent-Axia telephone +44 (0)344 856 0590 or visit
www.vent-axia.com.
www.vent-axia.com 32 BUILDING SERVICES & ENVIRONMENTAL ENGINEER DECEMBER 2024 Read the latest at:
www.bsee.co.uk
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