PH-units 1.5.2

Tools for working with common Passive House unit types

PH-Units:

A package for converting common Passive House unit types (IP | SI).

Usage:

The most basic usage is a simple conversion from one known unit to another:

>>> from ph_units.converter import convert
>>> # Convert 12.45 meters to feet...
>>> convert(12.45, "M", "FT") -> 40.85 # FT

The package also has a parser which can take simple text in the format: "{value} {unit}" and will split apart the text into a numeric part and a unit part:

>>> from ph_units.parser import parse_input
>>> val, unit = parse_input("0.17 BTU/HR-FT2-F")
>>> val  # 0.17
>>> unit # 'BTU/HR-FT2-F'

The results of the parser can then be fed into the converter

>>> from ph_units.converter import convert
>>> convert(val, "W/MK", unit) -> 0.098 # BTU/HR-FT2-F

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Unit Types Supported:

• Length (m, cm, mm, in, ft)
• Area (m2, ft2)
• volume (m2, ft3, liters, gallons)
• energy (Wh/M3, Wh/M2, kW/M2, kBtu/ft2, Btu/ft2)
• power (kW, W, W/M2, W/ft2, W/cfm, Btu/h-ft2, Btu/h)
• speed (m/d, m/s, m/h, ft/s, ft/d)
• temperature (C, F)
• volume flow (m3/hr, cfm)

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Adding New Units:

The conversion factors used are stored as types in the ph_units.unit_types directory. Note that the types also allow for common 'alias' descriptions ie: 'feet' can be denoted as "FT", "ft." or even the symbol '

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