โปรแกรมคอมพิวเตอร์คำนวณคุณสมบัติทางเทอร์โมไดนามิกส์ของสารทำความเย็น R12, R-22 และ R-134a

Abstract

This engineering project is to develop a computer program , that calculate thermodynamic properties of refrigerant R-12 , R-22 and R-134a. The properties from the program are temperature, pressure 5specific volume 5 internal energy 5 enthalpy and entropy. The program can calculate in form of saturated liquid , saturated vapor and superheated vapor . The assumption of changed properties are linearly. Resulting of the program are precisely and implementable.