I don't have specific ...
Published by Kurt Rasmussen, P.Eng., Specialist Engineer, Water & Wastewater Engineering, SaskWater
I don't have specific experience with heat exchangers you might want to check out King Lee's antiscalant. http://www.kingleetech.com/membrane-chemicals/antiscalants
I know Dr. King Lee personally and he is extremely skilled in antiscalants.
Kurt