Use of an inert gas in a fluid-operated heat exchange system. A cooling loop of a heat exchange system is purged with an inert gas to remove oxygen from the cooling loop. Coolant is added to the cooling loop of the heat exchange system. The coolant flows in the cooling loop of the heat exchange system...http://www.google.com.tw/patents/US8141620?utm_source=gb-gplus-share專利 US8141620 - Method for conditioning a cooling loop of a heat exchange system
