guv-calcs 0.7.1

A library for carrying out fluence and irradiance calculations for germicidal UV (GUV) applications.

GUV Calcs

A library for fluence and irradiance calculations for germicidal UV (GUV) applications. Simulate UV light propagation in rooms, calculate disinfection outcomes, and verify safety compliance.

Installation

Install with pip:

pip install guv-calcs

Or install from source:

git clone https://github.com/jvbelenky/guv-calcs.git
cd guv-calcs
uv sync

Quick Start

from guv_calcs import Room, Lamp

# Create a room (6m x 4m x 2.7m)
room = Room(x=6, y=4, z=2.7, units="meters")

# Add a lamp at the ceiling, aimed downward
lamp = Lamp(filedata="my_lamp.ies").move(3, 2, 2.7).aim(3, 2, 0)
room.add_lamp(lamp)

# Add standard calculation zones (fluence volume + safety planes)
room.add_standard_zones()

# Run the calculation
room.calculate()

# Access results
fluence = room.calc_zones["WholeRoomFluence"]
print(f"Mean fluence rate: {fluence.values.mean():.2f} µW/cm²")

Examples

Method Chaining

room = (
    Room(x=6, y=4, z=2.7)
    .place_lamp("my_lamp.ies")      # Auto-positions lamp
    .add_standard_zones()
    .calculate()
)

Multiple Lamps

room = Room(x=6, y=4, z=2.7)

lamp1 = Lamp(filedata="my_lamp.ies").move(2, 2, 2.7).aim(2, 2, 0)
lamp2 = Lamp(filedata="my_other_lamp.ies").move(4, 2, 2.7).aim(4, 2, 0)

room.add_lamp(lamp1).add_lamp(lamp2)
room.add_standard_zones()
room.calculate()

Custom Calculation Planes

from guv_calcs import Room, Lamp, CalcPlane

room = Room(x=6, y=4, z=2.7)
lamp = Lamp(filedata="my_lamp.ies").move(3, 2, 2.7).aim(3, 2, 0)
room.add_lamp(lamp)

# Add a plane at desk height (0.75m)
workplane = CalcPlane(
    zone_id="WorkPlane",
    x1=0, x2=6,
    y1=0, y2=4,
    height=0.75,
    x_spacing=0.25,
    y_spacing=0.25,
)
room.add_calc_zone(workplane)
room.calculate()

Non-Rectangular Rooms

from guv_calcs import Room, Polygon2D

# L-shaped room
floor = Polygon2D(vertices=[
    (0, 0), (4, 0), (4, 2), (2, 2), (2, 4), (0, 4)
])
room = Room(floor_polygon=floor, z=2.7)

Safety Compliance Check

room = (
    Room(x=6, y=4, z=2.7)
    .place_lamp("aerolamp")
    .add_standard_zones()
    .calculate()
)

result = room.check_lamps()
print(f"Compliant: {result.compliant}")

Save and Load

# Save
room.save("my_room.guv")

# Load
loaded = Room.load("my_room.guv")
loaded.calculate()

Lamp Keywords

lamp = Lamp.from_keyword('ushio_b1')

Currently, only 222nm lamps are available, with data downloaded from reports.osluv.org. We welcome collaboration to expand the availability of lamp data.

• aerolamp - Aerolamp DevKit
• beacon - Beacon
• lumenizer_zone - LumenLabs Lumenizer Zone
• nukit_lantern - NuKit Lantern
• nukit_torch - NuKit Torch
• sterilray - SterilRay Germbuster Sabre
• ushio_b1 - Ushio B1
• ushio_b15 - Ushio B1.5
• uvpro222_b1 - Bioabundance UVPro222 B1
• uvpro222_b2 - Bioabundance UVPro222 B2

License

Distributed under the MIT License. See LICENSE.txt for more information.

Contact

Vivian Belenky - [e-mail]

Project Link: https://github.com/jvbelenky/guv-calcs/