The challenge of cooling football stadiums in Qatar

A study of air conditioning in Qatar stadiums has explored the best way to achieve thermal comfort for spectators and players. Cairo University’s Essam E Khalil and Mohamed E Ashmawy share their findings

A Chicago thriller – chiller replacement

Replacing a district cooling system with chillers required a helicopter to lift new plant into a tiny room 200 metres above Chicago. Cyclone Energy Group’s Benjamin Skelton describes the challenge

Making the case for evaporative cooling

Evaporative cooling can save energy when used in the right climate. AEI’s James Falconer looks at the technology in Hong Kong, Las Vegas and London, and explains why the cooling method is making a comeback

Packing a punch – battery chillers

New battery technology could revolutionise the HVAC industry, says Klima-Therm’s Tim Mitchell, who explains how battery chillers that integrate and control multiple power sources deliver low-cost, efficient cooling