How HIU performance testing will change heat network design

New codes and tests designed to root out poorly performing heat networks are shining a spotlight on the supply chain. Alex Smith reports on a new test for heat interface units that will have far-reaching consequences for designers and suppliers

Prevention or cure – legionella prevention in heat networks

There are two options when it comes to safeguarding low-temperature district heating systems from legionella – safe design or sterilisation treatments. Xiaochen Yang, Hongwei Li and Svend Svendsen, from the Technical University of Denmark, look at the options

Testing the water – tackling corrosion in pipework

Unseen corrosion in pipework can have a huge effect on the efficiency of heating and cooling systems. Continual monitoring of water quality helps identify issues at an early stage and helps maximise HVAC performance, says Hevasure’s Steve Munn

Guide B essentials – air conditioning and refrigeration

CIBSE’s seminal guide to HVAC systems has had a major revision. Guide B covers best practice for heating, ventilating, air conditioning and refrigeration, and noise, and features a new online chapter that will be continually updated. Guy Hundy highlights the main changes in the air conditioning and refrigeration section

Packard Foundation HQ: net zero energy CIBSE award winner

The team behind the Packard Foundation HQ, which won the international project of the year accolade at CIBSE’s awards, set out to encourage others in the US by creating a net zero energy building. Andy Pearson explains how they did it