HR Series heat exchangers exchange heat between two enclosed, often pressurized gas streams.  This example has an aluminum core that is protected with Heresite coating, in a stainless steel housing with transitions and flanged air connections.  This unit is economizes a cryogenic vapor condenser used in a mobile regeneration facility used to eliminate PCBs from transformer oil.

Common Applications
Precooling hot rotary-lobe and multistage centrifugal blower discharge with cold saturated air/gas from a C Series heat exchanger to depress relative humidity in pneumatic conveying, biogas and landfill gas power generation systems.   

Core Construction
The aluminum plate-fin core is furnace brazed with alternating finned flow channels.   Process gas flows in horizontal channels, and ambient cooling air flows upward, through vertical channels.  The process stream enters and exits through rectangular aluminum headers, which are welded to the core.

Operational Considerations
Each process gas passageway is .02 square inches (.25 x .08 inches).  The process stream must be filtered to insure particulate will not obstruct the passages.  If necessary, the service side can usually be cleaned with a soapy water wash.  Due to their long flow length, the process channels should not be considered cleanable.

Installation Considerations
Pulsating flow, such as that produced by rotary lobe blowers should be dampened by a chambered silencer. AA Series exchangers dissipate heat from the process stream to the ambient environment.  They are designed for outdoor installation.  If installed indoors, the area should be very well ventilated.

Performance
Xchanger engineers use a computer model to analyze heat exchanger performance.   A specifically designed program calculates housing material thickness based on the ASME code.  As with all Xchanger equipment, the design performance is guaranteed.

Models
HR-250, HR-500, HR-1000, HR-1250, HR-1750, HR-2000, HR-2500, HR-2750 & HR-3500.