No, it is not an offshoot of Scientology-thank goodness. Using the Psychrometric Chart neatly plot the required air conditioning process and estimate a the amount of moisture removed [ Gatley, 17 Carrier psycrhometric this data to create a descendant of the Psychrometric Chart, called the Hygrometric Chart: Here is a modern version of the psychrometric chart. The program on the CD allows the user to plot typical psychrometric processes and perform the corresponding energy calculations on-screen, without having to first print out the individual charts. What is the humidity ratio at this point? The most popular chart in common usage is that developed by ASHRAE American Society of Heating, Refrigeration and Air-Conditioning Engineershowever we feel that the construction of a simplified version of the chart based on approximations of the various equations can be a very useful tool for developing an psychrometriic of it’s usage.Ī dry bulb air temperature thermometer reads degrees Fahrenheit and a wet bulb thermometer reads 68 degrees Fahrenheit. I must char you-I am going to get a bit technical, and you just might learn something at the end of this paper. Load Calculation Applications Manual, 2nd ed. Now, imagine a vertical line psychgometric from the point to the dry-bulb temperature x-axis. An interesting application of using a swamp cooler to cool drinking water in extremely hot environments is described in the posting of Rich Oppel in the At War blog of the New York Times: The intersection of wet and dry bulb temperatures on the chart, together with the relative humidity line, can be used to determine all psychrometric properties of air. Notice that on the saturation curve the wet and dry bulb temperatures have the same values. Want to teach an old HVAC dog some new tricks? A cooling of air temperature represents a shift to the left. Psychrometrics, at its core, is an area of engineering investigating the moist properties psychromwtric air. The upmost, leftward-curved line in the psychrometric chart represents the maximum of water vapor that is present in the air at a given temperature. Once you are able to understand the mathematics of the chart, it will make carrrier the humidity of your systems psyychrometric an easy process. The proportion of humidity in the air at a given temperature relative to its maximum. History of the Psychrometric Chart One of the most important tools within psychrometrics is the psychrometric chart, invented by Willis H.Īlso, you can create templates that you can reuse over and over again. Find the vertical line marked How does a Psychrometric Chart Work? Find the vertical line on the graph marked - this is the degrees dry-bulb line. Indicate all the values determined on the chart. Purchase Understanding Psychrometrics, psycrhometric ed.Ĭreate an unlimited number of psychrometric chart projects. Now find the diagonal right-to-left line marked 70 degrees, and envision an imaginary line to the degrees vertical line. The technical aspects of the modern psychrometric chart will be discussed below. It automatically generates charts displaying power consumption.
#Carrier psychrometric chart pdf professional
Psychometric points, processes and associated energy values are automatically calculated and plotted right on a professional psychometric chart. Catrier suite features customizable presentation parameters and offers editing tools for the input content adjusting the charts in real time. Gatley, 16 The most relevant gases that psychrometrics examine are air and water vapor, as controlling a water vapor-saturated environment is important in the fields of air ventilation, humidification, agriculture, meteorology, etc. Thompson, 2 The technical nature of this early psychrometric chart is not very important for your understanding, as the modern psychrometric chart incorporates new variables, which will be explained later. 35 40 45 50 0,36 55 Carrier PSYCHROMETRIC CHART NORMAL. ▫ Use chart to analyze processes involving moist air. W H Carrier, rational psychro- metric formulae, psychrometric chart, invention of centrifugal.