Air conditioning could be combined with solar power – which has one obvious advantage, says Maidment. "When the sun shines, you need air conditioning."
空调可以结合太阳能-这至少有一个优点，梅德门特说“当阳光照耀时，你需要空调。”
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Dr Maidment said it was most common among those working for Banks, fund managers and financial service companies, or whose jobs involve frequent travelling.
So Maidment and colleagues are investigating the idea of using the heat generated by CO2-based air-conditioning systems and fridges in supermarkets, for example, to provide hot water for nearby homes.