Retired public servant Li Chongxing at his waste heat collection machine. Photo: Handout Retired public servant Li Chongxing at his waste heat collection machine. Photo: Handout
Retired public servant Li Chongxing at his waste heat collection machine. Photo: Handout
Energy

Beijing retiree’s hot idea

Former public servant invents device to capture wasted heat

Topic |   Energy
Retired public servant Li Chongxing at his waste heat collection machine. Photo: Handout Retired public servant Li Chongxing at his waste heat collection machine. Photo: Handout
Retired public servant Li Chongxing at his waste heat collection machine. Photo: Handout
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