Clear evidence: applying cleanroom technology to commercial buildings

Cleanroom ventilation systems are used to ensure pathogen-free indoor spaces in life science buildings, but can the technology be used in commercial offices? Clean Air Technologies’ Brendon McManus MCIBSE, Richard Fagg and Steve Robinson put the theory to the test by measuring the clean-up rate in a mock-up of a boardroom

Calculating whole life carbon in heating and cooling systems

To minimise carbon emissions from heating and cooling, the whole life of a system must be taken into account. Hoare Lea’s Will Belfield and Mathew Stark compare three common cooling and heating systems to see which has the lowest impact over a 60-year lifetime

Overheating warning: how Part O aims to address overheating

Approved Document O was published in December, and is aimed at reducing overheating risk in new residential buildings. Inkling’s Susie Diamond says the new regulations have significant implications for the design of such buildings, including homes, student accommodation and care homes

Oversizing matters: Effect of boiler oversizing on efficiency

With energy prices soaring and carbon reduction a priority, ensuring heating systems are specified to operate as efficiently as possible is essential. In this article, based on their CIBSE Carter Bronze Medal-winning paper, Dr George Bennett and Dr Cliff Elwell explain the impact on energy use and comfort of oversizing boilers – and how correct sizing can boost efficiency

The dash from gas: converting schools from gas to heat pumps

With the need to switch from fossil fuels to renewables becoming ever more pressing, one heat pump retrofit schools project in Yorkshire could be the example to follow. Phil Lattimore looks at the project funded by the government’s Public Sector Decarbonisation Scheme

Tightening up: TM23 Testing building for air leakage

The latest update to the Building Regulations includes reference to a new CIBSE TM23 guide on airtightness testing. Julie Godefroy reviews the new TM, which includes a new approved air testing methodology, and considers the impact of the changes

Radical departure? Retrofitting for heat pumps

With the pressure on homeowners to replace domestic gas boilers with heat pumps, it is essential that engineers ensure that existing radiators and pipework are suitable for the lower-temperature heat source. David Palmer looks at the key considerations when upgrading a heating system