Practice Exercise - Module 3

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Yuvraj Gupta
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Module 3 - Project Goals Targets & Strategies
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Jan 29, 2025 7:36 AM
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Jan 29, 2025 7:37 AM
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Yuvraj Gupta
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Goal 1: Achieve Passive Thermal Comfort & Indoor Environmental Quality

Measure

  • Percentage of Occupied Hours Meeting Thermal Comfort Standards

    • (e.g., ASHRAE 55 or an adaptive comfort model for hot climates)

Targets

  • Minimally Acceptable Value: 70% of occupied hours within comfort range (without mechanical cooling)
  • Desired / Target Value: 90% of occupied hours within comfort range (with minimal mechanical intervention)

Strategies

  • Central Courtyard & Cross Ventilation: Leverage the courtyard to facilitate stack-driven airflow and natural ventilation, and aligning interior spaces around the courtyard so that prevailing breezes can move through the building freely.
  • Jali Screens & Deep Verandas: Incorporate perforated jali façades that diffuse harsh sunlight, reduce solar gains, and allow controlled airflow. Deep verandas or overhangs further shield interior spaces from direct sun, creating cooler indoor temperatures.
  • Subterranean Cooling: Strategically place mechanical rooms or semi-public gathering areas below grade to use earth’s insulation.
  • Envelope Optimization: Use high-performance envelope materials (e.g., insulated walls, thermally broken windows) to maintain thermal stability.

Goal 2: Optimize Water Harvesting & Conservation

Measure

  • Annual Reduction in Potable Water Use

    • (percentage of building’s total water demand met by harvested / recycled water)

Targets

  • Minimally Acceptable Value: 30% of water demand met through on-site collection and recycling
  • Desired / Target Value: 50% or higher of water demand met through on-site collection and recycling

Strategies

  • Stepwell-Inspired Water Collection: Adapting the traditional stepwell concept into modern cisterns or multi-level water features that harvest rainwater.
  • Green Roof & Rain Gardens: Install vegetated roofs and bioswales to increase on-site water retention, filter stormwater, and direct it to underground storage.
  • Greywater Recycling: Treat and reuse greywater (from sinks and showers) for landscaping, courtyard water features, and cooling strategies.
  • High-Efficiency Fixtures & Smart Controls: Specify low-flow fixtures, dual-flush toilets, and sensor-based faucets throughout the building to reduce overall consumption.

Goal 3: Achieve Low EUI / Move Toward Net Zero Energy

Measure

  • Energy Use Intensity (EUI), expressed in kBtu/sf/yr (or kWh/m²/yr)
  • Net Site Energy = on-site generation vs. total demand

Targets

  • Minimally Acceptable Value: EUI at least 30% below local baseline; on-site renewables supply 30–50% of load
  • Desired / Target Value: Near Net Zero — EUI >50% below baseline; on-site renewables supply 80–100% of load

Strategies

  1. Passive Design First: Reduce cooling loads via orientation, shading, jali screens, and natural ventilation, in alignment with your courtyard-centric plan.
  2. Rooftop & Canopy Solar: Install PV panels on rooftops or overhead shading structures (e.g., veranda edges) to generate a significant fraction of the building’s electricity demand.
  3. Solar Water Heating: Integrate rooftop solar thermal collectors to preheat water for restrooms, kitchens, or other service areas.
  4. Efficient Lighting & Controls: Utilize LED fixtures with daylight and occupancy sensors — especially effective given the natural daylighting from courtyards and jali patterns.

We have chosen these design aims and strategies because they basically integrate Indian heritage through courtyards, jali screens, and elements of stepwells with modern sustainability, future-proofing, and a human-centered approach. By making reference to traditional forms of architecture, we optimize natural lighting, ventilation, and water management; yet passive design measures, on top of that, reduce mechanical loads and energy consumption. Meanwhile, emphasizing renewable energy sets us on a path toward net-zero performance. Incorporating local materials and cultural references fosters occupant well-being, community pride, and a strong sense of place.