... other lubricants, Preheating of lubrication oil and heavy fuel oil, Preheating of seawater for fresh water production, Heat recovery, Heat exchange to air-condition the ... ° CHot Water, Steam, Acid, CausticF26-55~+230° CAcid, Caustic, FluidTPF0~+160° CConcentrated Acid, Caustic, High-temperature Oil, Steam JQ1 plate heat exchanger for water,pool heat exchanger