How to read - charts. Why?

You may ask : "Why should I bother learning how to read pressure-enthalpy scheme?" Because your time is limited and very valuable, that's a good question. The use of P-H schema is an important skill for which we have laid the Foundation in GTAC I, Module 1, " Introduction In the Refrigeration and Module2, Temperature and Pressure. There we were escorted heat with temperature-enthalpy (T-H) graphics. We also used the T-x diagrams showing the heat transfer to the evaporator and condenser in this module. Now we transfer this understanding T H chart P-H chart for the following reasons:

1. Help to eliminate mechanical cooling systems,
2. Help you see the function of each part of the mechanical refrigeration system and how they work together to change of pressure and heat transfer,
3. Help you predict the temperature and pressure, you should expect to find in various places within the system,
4. To give you an important tool for studying other principles relating to the cooling system, which will be presented in subsequent modules.

You can work without an understanding of the P-H scheme, but you can make your work easier, better, and more profitable, if you master this technique and use it...