DIN EN ISO 52016

Python implementation of the DIN EN ISO 52016 standard for calculating the energy performance of buildings. The package computes hourly heating and cooling loads for thermal zones using a 5-node thermal-network model per opaque element, solar irradiation via pvlib, and ground-temperature coupling per ISO 13370.

Installation

pip install .

Or for development:

pip install -e ".[dev]"

Quick start

import numpy as np
from iso52016 import (
    Building, Layer, Material, OpaqueElement, Orientation,
    Ventilation, Weather, Window, Zone,
)

# Create materials and layers
concrete = Material(density_kg_m3=2300, thermal_capacity_J_kgK=880, conductivity_W_mK=1.7)
insulation = Material(density_kg_m3=20, thermal_capacity_J_kgK=1450, conductivity_W_mK=0.035)
wall_layers = [Layer(0.2, concrete), Layer(0.1, insulation)]

# Set up weather (8760 hourly values)
weather = Weather(air_temperature=t_air, wind=wind)

# Define building envelope
wall = OpaqueElement(area=50, orientation=Orientation(90, 0), layers=wall_layers)
# ... add more walls, roof, floor

zone = Zone(
    opaque_elements=[wall, ...],
    usable_floor_area=100,
    internal_gains=[np.zeros(8760)],
    lower_temperature_limit=20,
    upper_temperature_limit=26,
)

building = Building(zones=zone, weather=weather)
building.calculate()

print(f"Heating: {zone.heat_load.sum() / 1000:.0f} kWh")
print(f"Cooling: {zone.cool_load.sum() / 1000:.0f} kWh")

See examples/easy_example.py for a complete working example.

Features

• Hourly heating and cooling load calculation per ISO 52016
• 5-node thermal network for opaque elements, 2-node for windows
• Solar irradiation via pvlib (any orientation/tilt)
• Ground-temperature coupling per ISO 13370
• Multi-zone support
• Ventilation with heat recovery

License

BSD 3-Clause.

Independent implementation of the calculation method described in DIN EN ISO 52016-1. This project is not affiliated with, authorized by, or endorsed by ISO, CEN, or DIN, and does not reproduce the text of the standard.