![]() Note that certain allowable combinations of enthalpy values are not possible in actual refrigeration systems. ![]() The cold side of the cycle is shown in blue and the hot side in red. ![]() The enthalpy values are in while the pressure, which does not enter into the calculation, is presented on an arbitrary scale. Please allow more processing time for mixed refrigerant. Temperature and Pressure Online calculator, figures and tables showing specific heat, C P and C V, of gasous and liquid ammonia at temperatures ranging from -73 to 425☌ (-100 to 800☏) at pressure ranging from 1 to 100 bara (14.5 - 1450 psia) - SI and Imperial Units. Saturated Liquid, Evaporation, Saturated Gas, Saturated Liquid, Evaporation. The pressure-enthalpy diagram is shown next. Online Interactive Pressure-Enthalpy (p-H) and Temperature-Entropy (T-s) diagram Online Interactive p-H and T-s Diagram. Pressure, Temperature, Specific Enthalpy, Specific Entropy, Specific Volume. It shows the main components, the refrigerant's flow direction and where energy enters and leaves. It calculates and displays the COP from the enthalpies at the four principal points in the cycle A, B, C, and D with the formula, where the 's are the enthalpies.Ī schematic view of the mechanical system is displayed below the calculated COP value. Note Gauge Pressure Absolute Pressure - Atmospheric Pressure. This Demonstration is intended to illustrate the use of the pressure-enthalpy diagram to calculate the energy efficiency of an ideal mechanical refrigeration system in terms of its coefficient of performance (COP). Properties of Saturated Steam - SI Units. Hazen Williams Formula for Head loss Calculation. Snapshot 3: an efficient mechanical refrigeration cycle with a coefficient of performance (COP) equal to 9 Calculator Making of Concrete Steel, Brickwork, Plaster Painting Etc. Snapshot 2: an inefficient mechanical refrigeration cycle with a coefficient of performance (COP) equal to 1 Enthalpy kJ/kg Pressure MPa Methane Pressure-Enthalpy Diagram SSpecific Entropy, kJ/kgK TTemperature, ✬ T-160 T-150 T-140 T-130 T-120 T-110 T-100 T-90 T-170 T-100 T-50 T0 T50 T100 T150 T200 Produced by I. To the extent not prohibited by law, in no event shall Danfoss be liable for any direct, special, indirect or consequential damages, whatsoever, including, without limitation, damage to property, damages for loss of savings or profits, or loss of data arising out of any use of the Application.Snapshot 1: a very inefficient mechanical refrigeration cycle with a coefficient of performance (COP) less than 1 This is all the cooling the evaporator was designed for, so, if we are getting 400 Btu/min of cooling from the system, we must be moving, 400÷745.4 lbm of refrigerant. Through this Mollier Diagram Air, you can calculate several humidity factors. Danfoss does not warrant that the Application will meet your requirements or that the operation hereof will be uninterrupted or error-free. The specific enthalpy of the evaporator, or refrigerant effect, is the difference between 182 Btu/lbm and 108 Btu/lbm, or, 74 Btu/lbm. Are you looking for a digital Mollier Chart Air See our digital solution. Vaporization Latent Heat Specific Heat(Cp) Specific Heat(Cv) Cp/Cv Vapor Quality Compressibility Factor Helmholtz Energy. The pressure is mostly scaled logarithmically. Saturated Vapor Pressure, Boiling Point(dew point), Latent Heat of Vaporization are saturated properties, just enter One parameter to calculate them. ![]() The Application and results and information generated thereby cannot substitute technical advice but must be verified by the user, they are not promises and should not be relied on as accurate data or analyses.ĭanfoss disclaims all warranties and conditions regarding the Application, whether express, implied, or statutory, including, but not limited to, conditions of merchantability, satisfactory quality, fitness for a particular purpose, accuracy and non-infringement of third parties’ rights. In refrigeration technology, the pressure-enthalpy diagram is by far the most frequently used state diagram. Ref Tools ("the Application") is provided on an "as is" and "as available" basis for the intended purposes as determined by Danfoss only and any use hereof is at the user's sole risk.
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