Pressure Enthalpy Without Tears: 8th Edition Eighth Edition

This program presents the important concepts of pressure enthalpy in a manner that will appeal to students, service technicians, and educators. Each refrigerant has its own set of unique properties, and these properties are compiled on the pressure- enthalpy chart for that particular refrigerant. The pressure- enthalpy chart facilitates the creation of a picture, or "snapshot" of the entire system's operation. Once the concepts of pressure enthalpy have been mastered, a field service technician should be able to effectively and accurately start up, troubleshoot and evaluate air conditioning and refrigeration systems using a properly completed pressure-enthalpy chart.Training Manual © 2027 ESCO - 225 Pages The book starts by reviewing the basic vapor-compression refrigeration cycle, as well as the concepts of superheat, subcooling and temperature/pressure relationships. The book then turns to the pressure-enthalpy chart, where simplified diagrams are used to provide a comprehensive overview of the meaning and purpose for every line on the chart. After combining the basic refrigeration cycle's concepts and the pressure-enthalpy chart to create an in-depth system illustration, the plotting of actual systems follows next. The completed plots allow for the evaluation of various system parameters and the calculation of many system characteristics, including system capacity and efficiency. It is during this evaluation process that system problems can be easily identified.The book has a section that is devoted to system troubleshooting, identifying visual clues on the completed chart to lead service personnel to the underlying cause for system failure. To aid the reader in fully understanding the true power of pressure-enthalpy, detailed system comparisons are provided to highlight the differences between properly operating systems and those that are malfunctioning. Once the concepts of pressure enthalpy have been mastered, the reader can truly appreciate this tool and its usefulness to effectively and accurately start up, troubleshoot and evaluate air conditioning and refrigeration systems.Now in its 8th edition, this manual has been updated to include:- Revised temperature/pressure charts to include R-32, R-454B, R-1234yf, in addition to some of our old favorites- Revised blank pressure-enthalpy charts to include R-32, R-454B, R-1234yf, in addition to some of our old favorites- Updated/revised examples to reflect Low-GWP refrigerants- More examples on how to plot systems on the pressure-enthalpy chart- New information on efficiency ratings including EER2, SEER2 and HSPF2- New information on system troubleshooting- Pressure-enthalpy troubleshooting overlay charts Read more