Heat Exchanger Design COMPRESS Heat Exchanger Design Option About the ASME (UHX)/TEMA Heat Exchanger Option Design shell and tube heat exchangers to TEMA and/or ASME (UHX) rules... with the COMPRESS heat exchanger option. Features include: Fixed, U-tube and floating tubesheet designs Simplified, step-by-step data entry mode UHX elastic-plastic analysis... aids engineers with optimizing both the thermal and mechanical design of a heat exchanger by preventing duplicate data entry and streamlining communication between the different...