There are few psychrometric considerations: We all know, P-V diagram, this psychrometric chart is prepared by following three steps: Psychrometry Considerations Easy to calculate the cooling or heating load requirements.Īll the psychrometric chart is represented in a Psychrometric which provides the states or condition of the air or water.Ī typical psychrometric chart is attached for reference.Easy to find out the condensate temperature.Any two parameters in the psychrometric chart can make the value of any other parameters.Psychrometry is developed into a psychrometric chart which has a wide function to understand the properties of air-water mixture and calculate the various parameters related to it. Now, psychrometry is entirely defining all the properties air-water mixtures. Moisture content present in the air comes in contact with the cold window surface & becomes small water droplets. Where from this water comes? It comes from the surrounding air only. Let us take an example when we are inside a car, sometimes we use to see water droplets outside the windows. Psychrometric Chart is a graphical representation where all psychrometric parameters can be derived.
If cooling continues, air reduces to hold the capacity of containing moisture content and it will condense into moisture droplets.Ĭheck out our ‘MechStudies – The Learning App’ in iOS & Android What is Psychrometric Chart? Definition & Explanation Psychrometric Chart Explanation.When the temperature of hot air begins to reduce, the vapour also started to cool.When the air is cold, it’s capacity to hold the moisture is reduced.Air can contain a large amount of moisture if it is hot.Outside air at 45☏ and 50% RH is brought in to maintain air quality. The Butterfly Conservatory at the ISU Reiman Gardens is maintained at 80℉ and 80% RH.
What is the relative humidity (%) of the 4. What is the exiting air dry-bulb temperature (F)? Draw a sketch of a psychrometric chart that demonstrates the process 3, Air at 40 air at 70☏ db? Draw a sketch of a psychrometric chart that demonstrates the process db and 38☏ wb is sensibly heated to 70☏ db. The air leaves the cooler totally saturated with water vapor.
Air at 86 db and 20% RH is drawn through an evaporative cooler. Units Tdry bulb 68 35 80 75 Twet bulb 58 80 Tdew point 65 Relative Humidity (RH) 40 90 Absolute Humidity 0.0072 Specific Volume Enthalpy (h) 2. Attach this sheet to the back of your submission. You do not need to replicate this table on engineering problems paper. Complete the following table using a psychrometric chart.