DuPont Freon 12 Saturation Properties Temperature reading comprehension thermodynamic propertiesFigure A14 P-h diagram for refrigeranta. manual describes the version of EES developed for Microsoft Windows operating systems, including .. format. The first argument of the function is the substance name, Ra in this case. The PropPlot %%1 PH 2 %%2 %%3 0 DoQLines automatically determine the file type independent of the filename extension. mollier chart for thermal engineering if looking for the ebook by mollier chart for free pdf download mollier free thermal engineering rs khurmi file type pdf table mollier . replacement for ra in refrigeration applications thomas j leck dupont.

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The condenser is shown on the pressure-enthalpy diagram as a horizontal line.

Refrigerant R12 properties

Cooling temperature Chlorinatedfluorocarbons CFCs or freons: Effects of refrigerant properties on refrigerant performance It is important to note that the pressure remains constant throughout the evaporator. Personal and Industrial Property Valuation Guidelines. For example quality of 0. The evaporator moves the refrigerant from point A partial liquid-vapor mixture to point B, a fully saturated vapor refrigerant.

Ra as a substitute for R12 and R22 Ra an alternative to Ra? This horizontal line is a line of constant pressure, corresponding to the discharge pressure of the compressor. There are also lines of constant entropy, which are also important. Experimental study of new refrigerant mixtures to replace R12 in domestic refrigerators Documents.


Properties of Refrigerant a Ra Documents. In this region there are vertical temperature lines, which increase as enthalpy is increased. Properties of Refrigerant R F Documents. Learn what resources you need at a minimum to pass the PE exam. Molar mass, gas constant, and critical-point properties.

It dupknt important to note that in the mix region, the pressure and temperature are dependent variables. Compression occurs at constant entropy, also known as isentropic compression. Note on the graph below as the refrigerant moves from point D to point A, the refrigerant moves from the liquid phase of the graph to the vapor-liquid mixture region.

Table 1 Properties of Saturated Liquid and Saturated Starting a System with Liquid Refrigerant in diwgram Compressor. In this region, the P-H diagram shows horizontal temperature lines, which indicate constant temperature. The mix region is the phase change diwgram, where any addition of enthalpy will cause additional liquid to vaporize instead of raising the temperature.

Table are based on K for those whose criticalreading and writing the lakota language pdf temperatures are. There are also upward sloping curves which indicate quality.


It is recommended that the engineer get a copy of the P-H diagram for Ra and the other common refrigerants. The left vertical curve indicates the saturated liquid curve and the right vertical curve indicates the saturated vapor curve. Adiabatic expansion indicates that there is no change in enthalpy and is characterized by a downward vertical line as shown on the below r1134a.


The amount of gas that is formed during this expansion is called flash gas.

The locations to the left of the saturated liquid curve indicate that the refrigerant is in liquid form and locations to the right of the saturated vapor curve indicate that the refrigerant is in vapor form. Entropy is the measure of the amount of disorder in the system.

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This cooling of the saturated liquid is referred to as sub-cooling. The suction line is the piping that routes refrigerant gas from the evaporator to the compressor. The region in between the two curves describe refrigerant states that contain a mixture of both liquid and vapor. A common question is to determine filrtype heat expelled by the condenser, which is shown in the figure above as the difference between the condenser entering condition H2 and the leaving condition H4.

Horizontal lines are again drawn on the refrigerant’s pressure-enthalpy diagram. Once the refrigerant is a fully saturated liquid, any additional heat fioetype results in a decrease in temperature.