How to use a-two-Line Tension-Temperatures Chart
Functions of one’s brand new zeotropic refrigerant mixes are very different than simply traditional refrigerants, it is beneficial to learn how to read a two-line PT chart.
Antique PT maps listing the over loaded refrigerant tension, into the psig, having a line to have temperature along the left front side. Single-role refrigerants and you can azeotropes boil and you will condense in the one heat getting confirmed tension. For this reason, just one column is required to tell you to show pressure-heat dating for all the phase-change techniques when you look at the a network. (find Fig. 1)
The services of the zeotropic mixes was slightly unique of the standard refrigerants. Zeotropic combines change in the composition from inside the boiling hot otherwise condensing techniques (find Fig. 2) While the blend change stage, a lot more of one to role tend to move into one other phase quicker compared to the people.
This house is named fractionation. The latest changing constitution of liquid reasons the fresh new boiling point temperature in order to change as well. The entire move out-of heat from a single region of the temperature exchanger to another is called the warmth slides. Zeotropic mixes can’t be discussed of the a single tension-temperatures matchmaking. The heat glide will cause additional philosophy getting temperature during the an excellent offered stress, based on how much refrigerant is h2o and how much try vapor.