What does ‘cool’ really mean?
Gas coolers are used to cool the air surrounding a compressor to prevent it from condensing and releasing pollutants.
These pumps and fans have been used for thousands of years in the industry to keep refrigeration systems running.
But the technology has not always been used effectively, with some gas coolers emitting methane, carbon monoxide and other toxic gases.
Al Jazeera’s Huda Yassin reports from Dubai.