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In this segment, we discuss the compressors (gas) and pumps (liquid), which are steady flow engineering devices. The goal is to increase the pressure of the fluid by using external energy input. We also solve an example problem. The problem is for refrigerant R-134A going through a nonadiabatic compressor and requires visiting the refrigerant R-134A tables (A-12 and A-13 in Appendix 1 Cengel). This material is based upon work supported by the National Science Foundation under Grant No. 2019664. Any opinions, findings, and conclusions, or recommendations expressed in this material are those of the author and do not necessarily reflect the views of the National Science Foundation.