The company offers stainless steel tube/aluminum fin evaporator construction to replace hot dip galvanized (zinc-coated) carbon steel coils in ammonia refrigeration systems. According to the company, stainless steel is highly corrosion resistant, which minimizes the potential for ammonia leaks in hostile environments. It also has a very high tensile strength, which results in high working and burst pressures, says the company. The manufacturer states that the properties of aluminum make it an ideal metal to use as fin material in ammonia heat exchangers because aluminum is lightweight, highly conductive, and corrosion resistant.
Colmac Coil Mfg. Inc., P.O. Box 571, Colville, WA 99114-0571; 800-845-6778 or 509-684-2595; 509-684-8331 (fax); email@example.com; www.colmaccoil.com.