Recirculating Indirect Process Air Heater (IAH-R)
High-Efficiency Recirculating Indirect Air Heating
Stelter & Brinck's IAH-R recirculating indirect air heater uses recirculated hot-side combustion air to support thermal efficiencies up to 90%. The indirect design separates combustion gases from the process air stream for applications where separation of combustion by-products from process air is required.
Standard configurations are available for process air outlet temperatures up to 900°F. Higher-temperature configurations are available based on specified operating conditions.
The IAH-R is designed for applications involving:
- Sensitive processes — Separates combustion gases from the process air stream
- High-efficiency operation — Recirculated hot-side combustion air supports thermal efficiencies up to 90%
- Demanding industrial service — Configurations available for long production runs, higher temperatures and large air volumes
- Flexible configurations — Available with application-specific layouts, controls, materials and accessories
The IAH-R-USDA is accepted for use in the USDA Dairy Grading Branch Plant Survey Program.
Recirculating Indirect Fired Air Heater
High Pressure IAH-R
"Economizer"- IAH-R with Combustion Air Preheat
Recirculating, Straight-Through, Indirect Fired Air Heater
USDA Dairy Accepted IAH-R
Indirect Fired Air Heater
Custom arranged Indirect Fired Air Heater
USDA-Certificate
FEATURES
Stelter & Brinck Recirculating Indirect Fired Air Heaters
are packaged systems that integrate hot-side blowers, air heat burners, a heat exchanger and controls. Units are prewired, pre-piped and factory-tested before shipment against specified operating conditions.
Our IAH-R systems are configured for industrial applications requiring indirect process air heating, temperature control and separation of combustion gases from the process air stream.
Key Features
- Structural steel, skid-mounted assembly
- Prewired control enclosure with DCS or remote operator station interface capability
- Integrated control panel with:
- System annunciator
- FM-approved high-temperature limits
- Air pressure switches
- PID digital temperature control, single or multi-loop
- Flame safety relay
- Main power disconnect
- Control transformer
- Hot-side blower motor starters
- UL 508A certification available upon request
- Construction available to applicable FM, CE, GAP, NFPA or CSA requirements
- Certified fabrication by AWS D1.1, D1.3 and D1.6 certified welders
- Insulated and skinned combustion chamber
- Factory test-fired and tuned to specified operating conditions before shipment
- On-site start-up and maintenance services available from Stelter & Brinck's service technicians
CONFIGURATION OPTIONS:
Stelter & Brinck can configure IAH-R systems based on specified process requirements and operating conditions.
Available options include:
- Alternate system layouts and configurations
- PLC or DCS control interface capability
- Process supply blowers and duct transitions
- Secondary heat recovery systems for combustion air preheat
- Stainless steel construction for specified corrosive, high-temperature or food-processing applications
ADVANTAGES OF THE STELTER & BRINCK IAH-R
With more than 100 years of experience in industrial combustion and process heating, Stelter & Brinck's IAH-R is designed for indirect process air heating applications where separation of combustion gases from the process air stream is required.
Available in medium- and high-efficiency configurations, including models with thermal efficiencies up to 90%, the IAH-R can be configured based on specified application requirements.
- Single-point fuel and power connection to simplify installation
- Thermal efficiencies up to 90%
- High turndown ratio for responsive process temperature control
- Configurations for a wide range of specified process air temperatures
- Fully proportional process temperature control
- Natural gas or propane operation; other fuels available upon request
- All-welded heat exchanger with materials selected based on specified operating conditions
- Separation of combustion gases from the process air stream
- Access for cleaning and maintenance
MODELS
USDA INDIRECT FIRED AIR HEATER - IAH-R-USDA
Stelter & Brinck’s IAH-R-USDA has been accepted by the USDA Dairy Equipment Review Program under the Dairy Grading Branch Survey Program.
The IAH-R-USDA uses recirculated hot-side combustion air to support thermal efficiencies up to 90%. The packaged system includes hot-side blowers, burner, gas valve train, heat exchanger and controls.
Configurations are available based on specified construction requirements and operating conditions.
Key Features:
- Horizontal or vertical configurations
- UL 508A enclosure available
- Low-emissions options
- Factory test-fired and tuned to specified operating conditions before shipment
- On-site start-up and maintenance support available from Stelter & Brinck service technicians
Benefits:
- USDA-accepted for use in dairy drying applications
- High thermal efficiency and high-temperature capability
- Fully packaged system designed to simplify installation
- Indirect heating with separation of combustion gases from the process air stream
