Product Overview | 8480 Series
— Plug-In compatibility with many existing recuperator designs minimizes implementation costs and complexity — Robust construction for improved life over typical plug-in recuperators Cast HT30 Alloy heat exchanger sections provide superior oxidation resistance and strength when compared to commonly available heat exchangers
The common “weak point” of conventional plug in recuperators is the main heat exchanger section. The two most common failure modes are separation of the recuperator end cap and combustion air leakage at large threaded connections. Excessive combustion air leakage in the recuperator causes the burner to operate “fuel rich”, resulting in post combustion in the recuperator. Subsequent overheating and ultimate failure of the recuperator body then occurs. In many cases, the excessive temperatures will also lead to premature failure of the radiant tube. The 8480 eliminates the common leakage problems by employing robust high temperature HT30 castings assembled with full penetration welds at all connections. The quality of the welds are not taken lightly, employing special preparation and full penetration welding procedures developed specifically for the 8480. This combination of high quality alloys and quality procedures assures that the high performance of the 8480 recuperator will continue long after the initial installation. The body of the 8480 is designed to relieve thermally induced stresses eliminating the potential for cracking of the body. Constructed of austenitic stainless steel, the body does not suffer from excessive grain growth and distortion common to many recuperator designs. The 8480 radiant tube connection, exhaust connection and hot air connection are designed to match many existing configurations. Additionally, the recuperator length can be varied to match the application preventing the recuperator end from penetrating past the hot face of the radiant tube bung insulation. Combined, these customized features facilitate the installation of the 8480 on most existing applications. Contact your North American salesperson for details on sizing the 8480 to retrofit you existing installation.
Fully welded heat exchanger eliminates threaded connection leak paths
Stainless Steel body designed to minimize thermally induced stresses and resulting stress cracks and body distortion — Unique high efficiency internal swirl vane design provides superior thermal performance and efficiency FEATURES OVERVIEW: The 8480 Series Recuperator's efficient design offers the poten- tial for significant fuel savings with conventional radiant tubes. The plug-in design enables easy retrofitting of existing installa- tions as well as convenient integration into new systems. The 8480 features thermally-optimized fins to deliver high thermal efficiency while minimizing pressure drop. The outer fins are staggered and segmented to trip the thermal boundary layer and increase heat transfer. Inside, swirling fins increase the turbulence, increasing heat transfer. Together, these surfaces form the core for the exceptional performance of the 8480. The 8480 is designed to allow users experiencing repeated failures with existing equipment a high performance and robust alternative. A thorough evaluation of several key parameters allows the user to fully understand the benefits associated with the design.
Bulletin 8480 page 2
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