Heating and Cooling

The Delphi Internal Heat Exchanger (IHX) is part of a vehicle's air conditioning system and helps to increase its cooling capacity. The Delphi IHX combines portions of the system's suction and liquid lines. It uses the cold vapor from the evaporator to cool the hot liquid before it enters the expansion device, resulting in increased cooling. The amount of energy used by the air conditioning system can be reduced by taking advantage of the increased cooling.

Benefits

• System performance improvement
• High performance, counter flow design with significantly lower pressure drop when compared to other IHX designs
• Excellent heat transfer
• Compact
• Significantly shorter length, while still providing the required performance
• Designs range from up to 50% shorter than other IHX designs
• Flexible packaging integration
• Integrated design can attach directly to the air conditioning line set (brazing), reducing system connections
• Customer-specific connections can be added
• Compatible with both R134a and R1234yf systems
• R134a systems
• Enables reduction in compressor power requirements, increasing fuel savings while maintaining performance
• R1234yf systems
• Allows near "drop in" R134a performance by increasing system capacity
• Environmentally friendly
• Improved fuel economy due to reduced compressor power
• Reduces air conditioning compressor fuel usage
• Helps reduce tailpipe CO₂ emissions
• Helps lower energy use

Typical Applications

The Delphi Internal Heat Exchanger is a vehicle air conditioning system component for use in the following:

• Passenger cars
• Pickup trucks
• SUVs

The flexibility of the Delphi design provides several packaging options, depending on the customer application needs. For example, it can be produced with block type fittings that enable it to be installed by an OEM. It can also be produced with couplers that enable an air conditioning line supplier to braze it directly to the air conditioning line set. Delphi engineers can also create custom designs for unique applications to meet specific customer requirements.

Typical Air Conditioning System Compared to an Air Conditioning System with a Delphi Internal Heat Exchanger

The above diagram shows a typical air conditioning system compared to an air conditioning system which includes a Delphi Internal Heat Exchanger.

Availability

Please contact Delphi regarding product samples for manufacturers.

Performance Advantages

The patent-pending Delphi Internal Heat Exchanger is constructed of brazed aluminum for lightweight durability and provides enhanced cooling capacity by improving evaporator performance and introducing less suction line pressure drop.

The IHX is backed by Delphi's complete thermal systems portfolio. Delphi offers extensive in-house design expertise and manufactures a variety of thermal products for vehicles, including:

• Compressors
  
• HVAC controls
• HVAC systems
  
• Evaporators
• Heater cores
• HVAC modules
  
• Powertrain cooling
• Charge air coolers
• Condensers
  
• Oil coolers
• Powertrain cooling modules
• Radiators