To minimise the risk of Covid-19 transmission in thermal wheels, designers should choose a configuration that minimises recirculation of contaminated air. FläktGroup’s David Black explains the options and how AHU purge sectors can cut the risk further
Category: Technical
Platforms for growth: digital engineering for SMEs
Adopting a digital way of working may be daunting for SMEs with a fraction of the budget of big rivals, but Atkins’ Ben Roberts MCIBSE says in-house digital advocates, training and freely available tools can get firms up to speed quickly
Modelling the world’s tallest indoor waterfall at Jewel Changi Airport
Measuring the impact of thousands of gallons of water cascading through a deeply forested shopping centre was difficult enough for Atelier Ten’s modelling team, without having to consider trains passing through the building’s core. Andy Pearson finds out how they used cutting-edge models to meet the challenge at Singapore’s Jewel Changi Airport, and won a CIBSE Building Simulation Award in the process
Reality gap: Modelling with CIBSE TM63 to identify performance gaps
CIBSE’s TM63 helps identify a building’s performance gap by evaluating its in-use performance to provide a benchmark that reflects real-life operating conditions. Authors Esfand Burman and Nishesh Jain discuss the benefits of a calibration approach
Ambient Lighting Manifesto: the response
In December, CIBSE Journal published an ‘ambient lighting manifesto’, written by four highly respected lighting academics who are calling for a paradigm shift in lighting practice. Here, we print a summary of reactions to the document from leading members of the profession, whose responses can be read in full on our website
Ten big changes in CP1 Heat Network Code of Practice
A big update to the CP1 (2020) Heat networks: Code of Practice aims to improve performance and provide the foundations for a quality assurance scheme. The authors, Phil Jones, Paul Woods and Martin Crane, highlight the key changes
Watershed moment: closed-loop pre-treatment cleaning of pipework
A method of pre-commission pipework cleaning that could save millions of litres of water has been accepted by BSRIA in its BG29/209 guidance. Alex Smith summarises the guidance and looks at the system’s benefits
Refrigerant rethink: measuring the environmental impact of HVAC
Specifiers need to start assessing a refrigerant’s embodied carbon as well as its global warming potential, says Klima-Therm’s Tim Mitchell, who is working with bodies such as LETI and CIBSE to calculate the full carbon impact of HVAC systems
LETI’s plan for retrofit energy targets
The energy demand of our homes must be reduced significantly to make a net-zero future viable, but for a high proportion of existing buildings this will be challenging. Passivhaus Trust’s John Palmer says upcoming LETI guidance will show professionals what is possible
Heart of the matter: calculating embodied carbon using TM65
Embodied carbon in MEP equipment makes up a large proportion of building emissions, but is hard to measure. Elementa Consulting’s Louise Hamot and Clara Bagenal George explain how CIBSE’s TM65 methodology estimates components’ environmental impact