This video discusses using Ladybug Tools, specifically focusing on limitations encountered while creating a script for outdoor comfort analysis. Here's a breakdown of the key points:
Goal:
Create a script in Ladybug Tools to analyze outdoor comfort and see if the building position can be optimized for better comfort.
Steps Taken:
Weather Data: Downloads weather data for a specific location.
UTCI Calculation: Calculates the Universal Thermal Climate Index (UTCI) considering air temperature, humidity, wind velocity, and radiant temperature.
Grid Points: Create a grid of points on the site to represent various locations for comfort analysis.
Human-Sky Relationship: Calculates the relationship between the sun and each grid point to determine sky exposure. (Bug encountered and fixed)
Heatmap Creation: Attempts to create a heatmap showing outdoor comfort across the site for the entire year. (Challenge encountered - data needs processing)
Analysis Period: Limits the analysis period to a specific month (July) and timeframe (noon to 10 PM) to reduce calculation time.
Data Processing: Applies the analysis period to all relevant data inputs.
Comfort Average: Calculates the average perceived temperature (UTCI) for each grid point during the specified period.
Building Movement: Creates sliders to allow movement of buildings along the X-axis to test the impact on comfort.
Optimization: Attempts to use Galapagos, an optimization tool, to find the building position that minimizes the difference between the average UTCI and the desired comfort level (21°C).
Limitations Encountered:
Large Dataset: Calculating UTCI for every hour of the year for all grid points is time-consuming.
Data Processing: The script needs adjustments to handle and process large amounts of data efficiently.
Limited Control: The script cannot directly control the analysis period within some tools.
Data Averaging: Averaging UTCI values across a month might not accurately represent comfort throughout the day.
Limited Testing: The video only explores moving buildings along one axis, neglecting the potential impact from other adjustments.
Outcome:
The video demonstrates the potential of Ladybug Tools for outdoor comfort analysis but highlights the challenges associated with handling large datasets and achieving optimal comfort through building positioning alone.
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