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@mariuspopovici/rho

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Readme

Rho

A small library which helps estimate air density (rho) based on air temperature, pressure and dew point.

Installation

`npm install @mariuspopovici/rho`

Usage

Parameters

temperature Air temperature in degrees Celcius (°C) or Fahrenheit (°F) depending on unit type.
air pressure Air pressure in hPA or inHg depending on units type
dew point Air temperature in degrees Celcius (°C) or Fahrenheit (°F) depending on
units of measurement Optional, defaults to metric. Change to imperial to indicate that inputs are in imperial units of measurement.
altitude Optional, defaults to 0. Specify altitude to if pressure is measured at sea level.

Examples

    var rho = require('@mariuspopovici/rho');
    // calculate Rho with values expressed in imperial units
    var density = rho(68.9, 30.1, 68.9, 'imperial');

Output should be 1.1984

    var rho = require('@mariuspopovici/rho');
    // calculate Rho adjusted for altitude
    var density = rho(29, 1010, 20, 'metric', 2000);

Output should be 0.9402

    var rho = require('@mariuspopovici/rho');
    // calculate Rho with values expressed in metric units (default)
    var density = rho(20.5, 1019.3, 20.5);

Output should be 1.1984

Result is reported in kg/m³ and can be optionally converted to lb/ft³.

    var rho = require('@mariuspopovici/rho');
    // calculate Rho with values expressed in imperial units
    var density = rho(68.9, 30.1, 68.9, 'imperial').toPoundsPerCubicFeet();

Tests

`npm test`

Contributing

In lieu of a formal style guide, take care to maintain the existing coding style. Add unit tests for any new or changed functionality. Lint and test your code.