| Name | Description | 
| COUNTERFLOW | 
  | Counter Flow | Counterflow heat exchanger arrangement |  
 
 | 
| CROSSFLOW | 
  | Cross Flow | Crossflow heat exchanger arrangement |  
 
 | 
| PARALLELFLOW | 
  | Parallel Flow | Parallel flow heat exchanger arrangement |  
 
 | 
| MULTIPASS | 
  | Multipass | Multipass flow heat exchanger arrangement |  
 
 | 
| OTHER | 
  | (other) | Value is not listed. |  
 
 | 
| NOTKNOWN | 
  | (unknown) | Value is unknown. |  
 
 | 
| UNSET | 
  | (unset) | Value has not been specified. |  
 
 |