How To Read A Mollier Diagram

The process transforming a mollier diagram to a psychrometric chart is shown below. The Mollier diagram is useful when analyzing the performance of adiabatic steady-flow processes such as flow in nozzles diffusers turbines and compressors.

Moist Air The Mollier Diagram

The state of air with dry bulb temperature 21 o C and relative humidity 50 is indicated in the Moliier chart below.

How to read a mollier diagram. Example - How to use the Mollier Chart. Molliers H-S diagram Enthalpy v Entropy was a logical extension of the T-S diagram Temperature v Entropy first proposed by Gibbs retaining the advantages of T-S diagrams but introducing several new advantages. H 36 0wb 2781n 455.

From the Mollier chart the enthalpy of the moist air is approximately 40 kJkg. You simply follow on the T-S or Mollier Diagram a constant enthalpy line down to the 00 barg line. MOLLIER DIAGRAM A NO-NONSENSE GUIDE TO USING IT e φ.

The dew point is the temperature at which air starts to condense. It is also known as the h-s diagram. It is sometimes known as the h-s diagram and has an entirely different shape from the T-s diagrams.

Reading A Mollier Diagram Pharmaceutics Youtube. It allows to quickly relates the specific heat of air the absolute humidity relative humidity and temperature. 0d 176 0L.

What is a psychrometric chart or Mollier Diagram. Transform between Mollier diagram and psychrometric chart. Compressor performance cannot be accurately predicted without detailed knowledge of the behavior of the gas or gases involved.

The wet bulb temperature is the theoretical temperature read by a thermometer covered in water-soaked cloth over which air is. Mollier diagrams are readily available for most pure gases at conventional pressures and temperatures. On this channel you can get education and knowledge for general issues and topics.

Psychrometric chart the psychrometric chart is a variant of the mollier diagram used in some parts of the world. Dew point is represented along the 100 relative humidity line in. The Mollier diagram is a variant of the psychrometric chart.

That can be read indirectly from the Mollier diagram. The Mollier diagram also called the enthalpy h entropy s chart or h-s chart is a graphical representation of thermodynamic properties of materials. The dew point and wet bulb temperature are two important variables that can be read indirectly from the Mollier diagram.

Red lines give the dryness fraction in the saturated zone. This diagram has a series of constant temperature lines constant pressure lines constant quality lines and constant volume lines. The dew point is the temperature at which air starts to condense.

Blue lines give absolute steam pressure. P P M 1 x. This video explains the various lines and regions that make up a Mollier diagram that is an enthalpy-entropy diagram.

Download and print Mollier Diagram for Water - Steam. Although any Mollier diagram is useful I find the most practical one to be the h-P one which makes our refrigeration cycle look like this. The chart contains a series of constant temperature linesa series of constant pressure lines a series of constant moisture or quality.

Rotating EquipmentDone byAndrew Panis SeraficoJonas Koh Zhi XiangPoon Min Shiu FionaTan Seng Wei. Green lines show steam temperature. Ideal isentropic expansion is represented on the Mollier diagram by a vertical line.

It is used to calculate heat loads for air handling systems for example. First it has to be reflected in a vertical mirror then rotated 90 degrees. The Mollier diagram is used only when quality is greater than 50 and for superheated steam.

The wet-bulb temperature is the theoretical temperature read by a thermometer covered in water-soaked cloth over which air is passed. On my diagram you can read the point values for enthalpy entropy pressure temperature and specific volume. The Mollier diagram is a is plot of enthalpy h versus entropy s as shown in Fig.

In the diagram below. In general it is a relationship between enthalpy measure of the energy of a thermodynamic system air temperature and moisture content. The psychrometric chart is used for all operations handling humid air.

Pressure-enthalpy diagrams can be developed for stable refrigerantsTo develop these curves it is nec-essary to vary the pressure and measure the amount 1 Refrigeration Service Engineers Society 1666 Rand Road Des Plaines Illinois 60016 PLOTTING THE AC CYCLE ON A PRESSURE-ENTHALPY MOLLIER DIAGRAM. The diagram below can be used to determine enthalpy versus entropy of water and steam. However in cryogenic areas or at very high pressure some gas behaviors are difficult to predict.

C HX 25008c. P P φ 100 d. The dew point temperature can be read by following a vertical line from the state-point to the saturation line.

Pinterest Since the pressure in heat exchangers is roughly constant the p-h diagram allows us to visualize superheat and subcooling both of which are really important for the cycles performance. The Mollier diagram shown in Figure A-1 is a chart on which enthalpy h versus entropy s is plotted. On this channel you can get education and knowledge for general issues and topics.

A typical H-S Mollier diagram for a thermodynamic fluid such as steam is shown in Figure 1.

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