8 CONTENTS News Features 7 News 22 Ahead of his time Government like Dad s Army ; US rm buys HPF; industry suffers sharpest output fall After his recent retirement from Aecom, Ant Wilson talks to Alex Smith about his prolic career 12 CIBSE news IAQ and retrot research win medals; new benchmarking tool; Young Lighter 2019 shortlist 16 Building to perform 30 A human touch Hywel Davies says pressure is growing to make existing buildings work in practice 18 Walk the talk Julie Godefroy looks at how the government aims to achieve zero carbon by 2050 20 Preparing the road to zero carbon Andy Stanton on Atkins Architects Declare commitment 57 Q&A Architect Robert Prewett on low-energy retrot projects Tim Dwyer reports from the ASHRAE summer conference, and summarises a blockchain seminar SPECIAL FEATURES Heat networks/ healthcare A round-up of heat network project and product news 35 Opening the loop CP3 guidance on open-loop groundwater source heat pumps aims to raise standards across the supply chain Andy Pearson looks at how Skelly & Couchs design provides natural ventilation and daylighting for more than 1,000 worshippers at Cambridges elegant new mosque 15 Feedback Technical 33 Heat network news 24 COVER FEATURE Green vision Voices A Meccano magazine article from 1937 prophesises an electric future 35 38 Generation gains 57 How the geology beneath Plymouth city centre offered a source of energy for fth-generation heat network technology 43 The scale of the water problem Issues around water quality in heat networks, and guidance for different stages of a system s life-cycle 46 Working towards net zero in hospital facilities Key upcoming reports and guidance from the CIBSE Healthcare Group 4 August 2019 www.cibsejournal.com CIBSE Aug19 pp04-05 Contents.indd 4 19/07/2019 14:59