CIBSE AWARDS | AIR QUALITY SHORTLIST Kampmann UK: WZA Decentralised Scholl Ventilation Unit Daikin: VRV 5 Heat Recovery Daikins VRV 5 Heat Recovery system is a sustainable and efficient HVAC solution for commercial buildings. Its three-pipe heat recovery technology allows simultaneous cooling and heating, enhancing efficiency with a low condensing temperature. The system includes Daikins Shrudo technology, which uses the integration of a sensor, shut-off valves and alarm to detect and isolate potential leaks. Daikin says this enables rooms to be tackled as small as 10m2 without additional calculations or measures. Daikin also offers embodied energy assessments for the system based on the TM65 calculation methodology. It shows a decrease of up to 53% in embodied carbon. Case studies, such as the University of Lincoln and BBC Earth Experience, showcase successful installations, highlighting the environmental considerations and energy efficiency. This unit, introduced to the continental European market in late 2021, enhances air quality and minimises virus concentration. It is designed to improve indoor air quality in classrooms, where research has found that elevated CO2 levels can hinder concentration. With a maximum airflow of 280l/s, the WZA unit features automatic airflow control based on CO2 levels, ensuring it stays below a programmed concentration. Equipped with an enthalpy counterflow plate heat exchanger, the unit efficiently recovers thermal energy and optimises humidity levels, which is particularly beneficial in winter. Operating on mixed-air ventilation principles, it introduces supply air without draughts. The company focuses on minimising whole life carbon, and the WZA materials are designed to be easily taken apart and separated for recycling. Healthy Air Technology: Distributed Air Purification System This holistic air purification solution, integrated with BlockDox building management systems, takes a novel approach to combine indoor air quality and building performance. By pairing the HA800 air purification technology with BlockDoxs IoT-enabled platform, the solution optimises spaces for health, comfort, and energy efficiency. The HA800s multi-layered filtration system captures pollutant particles as small as 0.3 microns, ensuring clean, healthy air. Its closing action controls draughts, and a split closure plate enables partial opening for enhanced user control. By integrating real-time data from the air purifiers and other building systems, BlockDoxs platform empowers precise and responsive management of environments. It is user-friendly and easy to maintain. OMICRON Zero Eurovent certified performance First air-source multifunctional heat pump and chiller unit using propane as a near zero GWP, natural refrigerant solution. 34 February 2024 www.cibsejournal.com CIBSE Feb 24 pp33-34 Air quality ventilation shortlist BPAs.indd 34 26/01/2024 15:24