TEHRAN (ISNA)- The world's largest Geothermal Heat Pump (GHP) system has been manufactured in the central Iranian city of Qom.
The device with the capacity of over 120,000 British thermal unit (BTU/h) has been designed and developed locally for heating and cooling the warm water required for the city, said Qolam Reza Faraji, Head of Qom Gas Company....