AirSketcher: Smart Classroom Ventilation: Improving Air Quality & Cutting Energy Costs by 78%

Описание: This presentation summarizes a comprehensive case study on the Smart Classroom Ventilation (SCV) system—an integrated approach designed to solve poor indoor air quality while drastically reducing energy costs.

We explore why natural wind is often insufficient for building interiors (using CFD Air Sketcher simulations) and how a hybrid system of exhaust fans, ceiling fans, and smart AC management can outperform expensive solar-only solutions. The study demonstrates a reduction in indoor CO2 levels by 50% and energy consumption by roughly 78%, achieving a payback period of just one year.

KEY TAKEAWAYS: • Drastic Improvements: The target scenario cuts CO2 from over 2000 PPM to under 1000 PPM and increases thermal comfort airspeed to 0.3 m/s. • Smart Operation: A mix of "Purge Mode" (fully open windows between classes) and controlled slight openings (10–25%) during classes preserves cooling while flushing stale air. • Financial & ESG Impact: Smart ventilation offers the fastest Return on Investment (ROI), significantly outperforming net-zero solar investments in terms of cost-efficiency and carbon reduction.

TIMESTAMPS: 00:00 - Baseline vs. Target: CO2, Comfort, and Energy Savings 01:04 - CFD Air Sketcher Analysis: Wind flow patterns 02:28 - Introducing the Smart Classroom Ventilation (SCV) System 03:40 - Window Management: Normal Operation vs. Purge Mode 04:46 - Hybrid Operation: How AC works with Exhaust Fans 06:42 - The "Ventilation Advisor" App for manual control 07:17 - Comparison of 5 Scenarios (Baseline, Solar-Only, Smart Vent) 09:02 - Environmental Impact & Carbon Reduction 10:39 - Governance & Financial Analysis (ROI & Costs)

TECHNICAL RESULTS: • CO2 Levels: Reduced from over 2000 PPM to under 1000 PPM • Energy Use: Dropped from 172,000 kWh/yr to 38,000 kWh/yr • Airspeed: Increased from stagnant to 0.3 m/s • System Strategy: 4 Exhaust Fans (~8 ACH) + 6 Ceiling Fans + Hybrid AC Control

#SmartVentilation #HVAC #EnergyEfficiency #IndoorAirQuality #GreenBuilding #ESG #Sustainability #Engineering #CFD #NetZero