The science behind every heat-resilience decision.
HeatCredit synthesizes physical building envelope parameters, localized meteorological telemetry, and a deterministic 0/1 knapsack optimization algorithm. Every resilience dollar is allocated through verifiable physical science, eliminating arbitrary intuition.
Seven-Dimension Infrastructure Matrix
No machine learning approximations. HeatCredit scores every building deterministically across seven physical dimensions calibrated to thermodynamic radiant heat load and biological survival thresholds.
Thermal Protection
The rooftop envelope is the primary barrier against incoming solar irradiance. Unshaded or uninsulated roofs transmit 60–80% of heat downward into occupant workspaces.
Five-Tier Resilience Threshold Scale
Calculated cumulative scores (0–100) map strictly to five verified resilience bands. This scale defines institutional action priorities and heatwave triage urgency.
Immediate structural shading, emergency drinking points, or operational shutdown during red alerts.
High vulnerability to sustained heat; candidate for cool roof and ventilation interventions.
Adequate protection during ordinary summer heat; vulnerability surges if temperatures breach 42°C.
Significant passive protection; capable of buffering internal temperatures without emergency assistance.
Optimized thermal envelope, shaded grounds, and dedicated cooling safe-haven suitable for disaster refuge.
Institutional notice: HeatCredit risk classifications represent physical building vulnerability assessments. They provide decision-support prioritization, not localized meteorological forecasting or medical safety guarantees.
Source-to-Model Telemetry Architecture
Trace how raw physical coordinates, live meteorological APIs, and deterministic offline fallbacks integrate into the decision pipeline.
Spatial Geolocation
- Coordinates: Latitude & Longitude
- Facility Type & Classification
- Building Footprint & Roof Type
- Peak Occupancy & Operating Hours
Determines regional climate zone and exposure vulnerability weighting.
Meteorological Intake
- Ambient Temperature (°C)
- Apparent Heat Index (°C)
- Relative Humidity (%)
- Direct Solar Irradiance (W/m²)
Hourly diurnal weather models refreshed dynamically via serverless Lambda.
Climatic Normal Fallback
- Hyderabad: 37°C ambient / 41°C app
- Chennai: 36°C ambient / 42°C app
- Delhi: 40°C ambient / 43°C app
- Triggered if API latency > 3000ms
Guarantees mathematical determinism during network degradation.
Microclimate Synthesis
- Latent Heat Delta: +Δ°C Index
- Peak Heat Window: 12:00–16:00
- Exposure Penalty Calculation
- ROI Prioritization for Interventions
Direct input into 0/1 Knapsack optimization algorithm.
0/1 Knapsack Decision Algorithm
Resilience funding is scarce. HeatCredit executes an exact 0/1 knapsack combinatorial algorithm to maximize total resilience score lift (+ΔScore) under an inviolable capital constraint.
Tie-breaking discipline: If two candidate packages achieve identical total impact score, the engine strictly selects the package with the lowest total expenditure, preserving remaining liquidity.
Interactive Capital Allocation Laboratory
Adjust the budget ceiling to observe real-time dynamic programming selection across the six canonical measures.
Pergolas, tensile canopies, or shade sails over key exterior pedestrian areas.
Chilled or ambient hydration station supporting thermal recovery during midday heat.
Ceiling fans, louvers, and cross-ventilation openings to evacuate trapped heat.
Native tree planting and vertical vegetative shading for microclimate cooling.
High-albedo solar reflective coating (SRI > 80) to reject radiant rooftop energy.
Dedicated air-conditioned or passive recovery room for emergency heat stress shelter.
Auditability, Assumptions & Limitations
Ethical climate technology demands absolute transparency. HeatCredit operates under declared boundaries and verifiable assumptions.
Verification Hierarchy
Building inputs are classified into three evidentiary tiers to account for reporting variance:
Owner or administrator survey estimate without photographic verification.
Architectural drawings, construction invoices, and verifier audit stamps.
On-site IoT thermocouple readings and Open-Meteo station telemetry.
Mathematical Simplifications
The model maintains mathematical tractability through explicit scientific assumptions:
Known Disclaimers
How institutional decision-makers should contextualize model outputs: