A/C System Test Bench

Apart from numerous tests referring to EGELHOF’s product portfolio, consideration of the overall A/C system loop is of growing importance.
The main reason for such a development is the continuous development of A/C devices operated with R134a gas (e.g. systems with “internal heat exchanger”) along with the new development of A/C devices operated with R744 (CO2) gas or other alternative refrigerants.

The functions of each individual components and it’s interaction is becoming more important.Therefore EGELHOF decided to merge its experiences as a manufacturer of control valves with the experiences made from the customer.

As a special service to dimension a/c devices, since 2007 EGELHOF offers one or two operators in its own A/C system test bench.
Circuit components and pipelines can be installed in their original assembly position, i.e. in the same way as they are installed in the vehicle.

Capacities defined on a large scale allow for a simulation of nearly all important environmental conditions.

Main focuses for tests carried out on the system test bench:

• To adapt and guarantee a selection of thermostatic expansion valves (TXV) in the framework of system development in favor of and in cooperation with our customers
  
• Analysis of weak points within refrigeration circuitsSchwachstellenanalyse in Kältekreisläufen.
  
• Benchmarking of various valve producers and other circuit components
  
• Simulation or replication of faults occurring in the field and development of corrective actions
  
• Consideration of heat exchangers within the system related to air diffusion and oil transport
  
• Check condensation and condensation drain behavior
  
• Evaluate performance / performance of an a/c system related to refrigeration circuit.