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Living Psychrometrics

5.67 usd

Offers three different psychrometrics calculations in one App.This app offers three different calculations and shows the results both in a pane and on a diagram:1. Capacities Calculates the required capacity to heat up or cool down a given amount of air (e.g. air in your room).
2. Heat exchanger Calculates how warm room air heats up cool ambient air before supplying it as fresh air to the room. While heating up the ambient air, the heat exchanger cools down the room air, which may result in condensate. To prevent this, this calculation dimensions an electric heater when the ambient air would be too cold.
3. Carburetor icing Given a temperature and a dew point temperature, calculates the probability of icing in an airplane carburetor. Graphically shows the danger zones on a diagram.
These three calculations show the results in a pane, but also graphically in a diagram. You can choose between three different diagrams:1. Psychrometric This is the classic diagram representing different kinds of air properties into a single diagram. You find detailed descriptions in standard books about air treatment, such as ASHRAE. This diagram shows lines of constant temperature, humidity ratio, relative humidity, enthalpy and specific volume.
2. Mollier This is probably the oldest diagram to represent air properties and named after its inventor Richard Mollier (1863-1935). To get a psychrometrics diagram from a Mollier diagram, swap it along the vertical axis and rotate it 90°. The Mollier diagram is heavily used in Eastern Europe and Germany and shows the same lines as in the psychrometrics diagram.
3. Dewpoint This diagram is meant for meteorologists and pilots. It is easy to read important weather data, such as temperature, dew point and relative humidity. However, this diagram shows the same constant lines as for the other two. Interestingly, the straight lines in the other two diagrams become curved lines in this one and vice versa.
Although the app runs on several android devices, it gives its best result on a large(r) screen such as tablets. On smaller screens you may need to zoom in (see below).
Features- Choose between metric or imperial unit dimensions, e.g. °C and °F or kW and BTU/h.- Enter data by tapping buttons or by keep pressing them for faster input.- See immediate results of your data entry on the diagrams and the result pane. Arrows on a line between two points show the direction of the action.- Read all possible air properties of a given point in the diagram from the result pane: dry bulb temperature, wet bulb temperature, dew point, humidity ratio, relative humidity, enthalpy, density and specific volume.- Choose one of the diagram types (Psychrometrics, Mollier or Dewpoint) for the graphical results. Hide some constant lines on the selected diagram to simplify it or change the colors of the constant lines in the diagrams.- Hover over the diagram, instead of entering values, and watch the results appearing instantly.- Define the efficiency properties of a heat exchanger, giving you professional results.- Tap the explain tab to get a short explanation of a calculation or a diagram.- Zoom in (two fingers gesture) and pan (one finger gesture) to ease accessing the data entry controls or to enlarge a part of the diagram.- Detects the language settings on the Android device and, if possible, changes its language (French, German, Spanish and Dutch). Otherwise keeps using English.
LimitationsTo make sure this app runs on your Android device, please install the free app SYSCHECK first ( It must confirm your device uses an ARMv7 processor and has a NEON feature.You also need Android 4.0 or higher