![]() To read a psychrometric chart we first find the dry bulb temperature and locate it on the graph on the horizontal axis.Measuring unit – g/kg (grams of water vapour per kilogram of air) How to Read Psychrometric Chart Step-by-Step: It is known to be the most reliable measurement of humidity in a space. It is the weight of water vapour present in a unit weight of moist air. There is no particular unit in which relative humidity is measured. The relative humidity is 100% during rainy seasons.Relative humidity helps us measure the amount of moisture present in the air in relation to the maximum amount of moisture the air can actually hold. Dew point temperature is measured in a saturation curve. If you ever get below this temperature, the air will change its state and begin condensing. It is the temperature that the air is cooled to get achieve 100% relative humidity. We can measure the wet-bulb temperature of a space by wrapping a wet wick around the bulb of a thermometer. This refers to the lowest temperature to which the air can be cooled through the process of evaporation of water into the air. Measuring unit – Degrees Celsius (☌) or Degrees Fahrenheit (☏). It is called “dry bulb temperature” because it is not affected by moisture or humidity. When we refer to the air temperature, we often refer to the dry-bulb temperature. This can be measured using a thermometer. What All Can We Read in a Psychrometric Chart?Ī Psychrometric Chart helps us read the following information: ![]() Required design strategies to achieve comfort.The following can be assessed with the help of a psychrometric chart: This helps us find solutions to commonly occurring HVAC problems that can be fixed beforehand when taken into consideration in the early stages of design. Using psychrometric charts, we can assess the physical and thermal properties of air in the environment. Why Use Psychrometric Charts in Architecture? With a single chart, we will be able to find multiple air properties such as the temperature and humidity of a space. That’s where a psychrometric chart proves to be most helpful, as it helps solve real-time HVAC problems in a building. We also know that it’s quite tricky to get it just right. If you want to save your Diagram and Values/ processes in a PDF-report, please push the button "Save PDF", and it starts downloading automatically.We know that HVAC plays a significant role in the comfort of a built environment. Comfort area: This is the range of the desired Temperature and Humidity.Axes: Do you want to focus on just a part of the diagram?.Because the formulas and the graph depend on the height above sea level (air pressure changes), it is important set the correct altitude. Altitude: Standard the altitude is set to sea level.This affects the chart, input values and calculated values. Units-system can be set to Metric(SI) or Imperial(I-P).Chart Style: Mollier/ Psychrometric-Chart.The new condition of the air is calculated and this new point and the process will be automatically drawn in the diagram. With this online tool you can simulate and visualize thermodynamic processes that affect moist air.Īfter entering the Air start conditions, you can enter various actions, like " Mix", " Heat", " Cool", " Heat Recovery" and " Humidify". Psychrometric Chart calculator and Sketcher At the Thermodynamics Conference in Los Angeles (1923), it was decided to name the diagram after Richard Mollier in his honor. The Psychrometric Chart is also known as the "Mollier-Diagram". The chart is is combined with the Relative Humidity lines and the Enthalpy to calculate the change in total internal energy. ![]() This diagram is widely used in mechanical engineering and HVAC technology and plots the Temperature versus the Absolute Humidity. With a Mollier Diagram (also know as Psychrometric Chart) you can draw processes of humid (moist) air and calculate air conditions.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |