Short answer

When specifying BIPV for facades, consider the surrounding urban context, particularly ground surface materials and street geometry, to manage potential impacts on pedestrian thermal comfort.

Field: Human Factors
Source: Building Simulation Conference proceedings (2023)
Method: Parametric simulation using Computational Fluid Dynamics (CFD).
Evidence: Moderate effect

The integration of Building Integrated Photovoltaics (BIPV) on facades can subtly influence outdoor air temperatures, impacting pedestrian thermal comfort. This human factors research insight is drawn from a 2023 study published in Building Simulation Conference proceedings. Using Parametric simulation using computational fluid dynamics (cfd)., researchers explored how this design variable affects real-world outcomes. The key design takeaway: When specifying BIPV for facades, consider the surrounding urban context, particularly ground surface materials and street geometry, to manage potential impacts on pedestrian thermal comfort.

Study

Human FactorsRecentModerate effect

BIPV Facades Can Alter Pedestrian Thermal Comfort by Up to 0.46°C

The integration of Building Integrated Photovoltaics (BIPV) on facades can subtly influence outdoor air temperatures, impacting pedestrian thermal comfort.

Building Simulation Conference proceedings · 2023

Key Findings

01BIPV deployment can lead to variations in urban air temperatures throughout the day.
02Temperature differences at pedestrian level ranged from -0.21°C to +0.46°C in Zurich and -0.23°C to +0.42°C in Singapore compared to non-BIPV scenarios.
03Ground surface material and street width were identified as the most influential parameters affecting air temperature.

Application

Design takeaway

When specifying BIPV for facades, consider the surrounding urban context, particularly ground surface materials and street geometry, to manage potential impacts on pedestrian thermal comfort.

How to apply

When designing urban spaces or buildings with BIPV, use microclimate simulation tools to assess potential thermal comfort impacts and adjust design parameters like facade coverage, ground materials, and street dimensions accordingly.

Project actions

01When researching BIPV, consider its impact on human comfort, not just energy generation.
02Use simulation tools to explore how design choices affect microclimates.

Method & Evidence

AimTo investigate the impact of varying levels of BIPV deployment on building facades on outdoor thermal comfort for pedestrians in different urban contexts.

MethodParametric simulation using Computational Fluid Dynamics (CFD).

ProcedureSimulations were performed using Envi-met software for 80 distinct urban configurations across two climatic zones (Zurich and Singapore) to assess the effects of BIPV on air temperature at pedestrian level.

ContextUrban microclimate and pedestrian thermal comfort.

Variables

IV["Level of BIPV deployment on facades","Ground surface material","Street width"]

DV["Outdoor air temperature at pedestrian level","Pedestrian thermal comfort (implied)"]

CV["Urban configurations (80 variations)","Climatic zones (Zurich, Singapore)","Simulation software (Envi-met)","Time of day (warmest day of the year)"]

Strengths & Limitations

Strengths

+Utilizes a parametric approach to explore a wide range of urban configurations.
+Employs established CFD simulation software for microclimate analysis.

Limitations

Simulations are models and may not perfectly reflect real-world conditions. The study focused on specific climatic zones and may not be generalizable to all urban environments.

Reliability & validity

The reliability of the findings depends on the validation of the Envi-met model against real-world data. The validity is strengthened by the parametric approach exploring numerous configurations, but limited by the focus on specific climatic conditions.

Think critically

How might the aesthetic integration of BIPV also influence pedestrian perception of thermal comfort, beyond just the measurable temperature changes?

Design Principles

"Integrate energy-generating building elements with an awareness of their microclimatic and human comfort implications."

As cities increasingly adopt BIPV for energy generation, understanding its microclimatic effects is crucial for designing comfortable and sustainable urban environments. This research highlights the need to consider thermal comfort alongside energy performance in urban planning and architectural design.

What This Means for Your Design

Putting solar panels on buildings can slightly change the temperature outside for people walking by, making it a little warmer or cooler. How much it changes depends on what the ground is made of and how wide the street is.

How to use in your project

1.Reference this study to justify the importance of considering microclimatic effects in your design project.
2.Use the findings to inform your design decisions regarding materials and urban form.

Add to My Project

Quick Cite

Paragraph starter

This research highlights that Building Integrated Photovoltaics (BIPV) can influence pedestrian thermal comfort by altering local air temperatures, with effects ranging up to 0.46°C. The study emphasizes the significant role of urban context, particularly ground surface materials and street width, in modulating these thermal impacts, suggesting that designers must consider these factors to optimize urban comfort alongside energy generation.

Source

Building Simulation Conference proceedings

A parametric approach to evaluate the impact of BIPV facades on outdoor thermal comfort in different urban contexts

journal · 2023

View source

Questions About This Research

What does the research say about bipv facades can alter pedestrian thermal comfort by up to 0.46°c?: When specifying BIPV for facades, consider the surrounding urban context, particularly ground surface materials and street geometry, to manage potential impacts on pedestrian thermal comfort. Evidence: Building Simulation Conference proceedings (2023).
Why does "BIPV Facades Can Alter Pedestrian Thermal Comfort by Up to 0.46°C" matter for design?: As cities increasingly adopt BIPV for energy generation, understanding its microclimatic effects is crucial for designing comfortable and sustainable urban environments. This research highlights the need to consider thermal comfort alongside energy performance in urban planning and architectural design.
How can designers apply this research?: When specifying BIPV for facades, consider the surrounding urban context, particularly ground surface materials and street geometry, to manage potential impacts on pedestrian thermal comfort.
What were the main findings?: BIPV deployment can lead to variations in urban air temperatures throughout the day.. Temperature differences at pedestrian level ranged from -0.21°C to +0.46°C in Zurich and -0.23°C to +0.42°C in Singapore compared to non-BIPV scenarios.. Ground surface material and street width were identified as the most influential parameters affecting air temperature.
What research method was used?: Parametric simulation using Computational Fluid Dynamics (CFD)..
How strong is the evidence?: Evidence strength is rated Moderate effect, based on a 2023 journal from Building Simulation Conference proceedings.
What should I do differently in my next project?: When designing urban spaces or buildings with BIPV, use microclimate simulation tools to assess potential thermal comfort impacts and adjust design parameters like facade coverage, ground materials, and street dimensions accordingly.
What are the limitations?: The study focuses on a single 'warmest day' scenario and may not capture the full range of seasonal or daily thermal variations. The simulation results are dependent on the accuracy of the Envi-met model and input parameters.