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About the application:

This apk offers four various calculations and shows the results both in a pane and on a psychrometric diagram: 1. Air treatment Calculates how to convert a given ambient air to a needed design air. The steps involved are cooling with a given sensible heat factor, dehumidifying, heating and humidifying (adiabatic or steam). Depending on the given and needed air conditions, some of these steps may not be needed. 2. Capacities Calculates the needed capacity to cool down or heat up a given amount of air (e.g. air in your room). 3. Heat exchanger Calculates how warm room air heats up cool ambient air before supplying it as new air to the room. While heating up the ambient air, the heat exchanger cools down the room air, which may effect in condensate. When the ambient air would be too cold, this calculation dimensions an electric heater to prevent condensate. 4. 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 four calculations present the results in a pane, but also graphically in a diagram. You can select between three various diagrams: 1. Psychrometric This is the classic diagram representing various kinds of air properties into a single diagram. You search detailed descriptions in standard ebooks 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 receive 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 simple to read necessary weather data, such as temperature, dew point and relative humidity. However, this diagram shows the same constant lines as for the another two. Interestingly, the straight lines in the another two diagrams become curved lines in this one and vice versa. Although the apk runs on a few Android device devices, it gives its best effect on a larger smartphone screen. On smaller screens you may need to zoom in (see below). Features - Choose two air properties to define a point: dry bulb temperature, wet bulb temperature, humidity ratio, relative humidity, enthalpy, specific volume and moist air density. - No need for a keyboard. Enter data using buttons for little and really big value increments. - Select between metric or imperial unit dimensions, e.g. °C and °F or kW and BTU/h. - See immediate results of any change on the diagrams and the effect panel shows detailed info about a point on the diagram. - Select one of the diagram types (Psychrometrics, Mollier or Dewpoint) for the graphical results. Hide some constant lines on the chosen diagram to simplify it. Define colors for the diagram lines and the background gradient. - Define the efficiency properties of a heat exchanger, giving you professional results. - Tap the explain tab to receive a short explanation of a calculation or a diagram. - Zoom in (two fingers gesture) and pan (one finger gesture) to enlarge and move a part of the diagram. - The apk saves your recent settings and starts up with those settings. Adapts its player interface when you rotate your screen. - Detects the language settings on the Android device device and, if possible, changes its language (French, German, Spanish and Dutch). Otherwise keeps using English. Limitations To create sure this apk runs on your Android device device, please install the gratis apk SYSCHECK first (https://play.google.com/store/apps/details?id=com.ss.syscheck&hl=en). It must confirm your device uses an ARMv7 processor and has a NEON feature. You also need Android device 4.0 or higher