🧍 Thermal Comfort (PMV & PPD)
Evaluate indoor thermal comfort based on Fanger's 6-parameter model (ISO 7730 / ASHRAE 55), computing Predicted Mean Vote and Predicted Percentage Dissatisfied.
⚡ Fortran 90 Engine
Double Precision (IEEE 754)
✓ ISO / ASME Validated
Hvac
📊 Solver Telemetry
● ACTIVE
🧍 Fanger Thermal Comfort Mannequin & 7-Point PMV Gauge
Real-time thermal radiation exchange, convective heat loss & ISO 7730 comfort zones📝 Configuration & Presets
☀️ Summer Office (24.5°C / 0.5 clo)
❄️ Winter Office (21°C / 1.0 clo)
🛍️ Retail Active (1.7 met)
🌀 Ceiling Fan (0.8 m/s)
Fanger ISO 7730 Formulations:
• PMV = [0.303 · e−0.036 M + 0.028] · L [−3 to +3]
• PPD = 100 − 95 · exp(−0.03353 PMV⁴ − 0.2179 PMV²) [%]
• Cat A: |PMV| ≤ 0.2 (PPD ≤ 6%)
• Cat B: |PMV| ≤ 0.5 (PPD ≤ 10%)
• PMV = [0.303 · e−0.036 M + 0.028] · L [−3 to +3]
• PPD = 100 − 95 · exp(−0.03353 PMV⁴ − 0.2179 PMV²) [%]
• Cat A: |PMV| ≤ 0.2 (PPD ≤ 6%)
• Cat B: |PMV| ≤ 0.5 (PPD ≤ 10%)
📊 Thermal Comfort Results
Configure inputs and click Compute to view results.
📘 Calculation Methodology & ISO 7730 Standards
The Fanger 6-Parameter Model
Combines physiological skin heat loss, dry/latent respiration, radiative exchange with walls, and convective heat transfer to compute the net thermal load $L$:
PMV = [0.303 · e−0.036 M + 0.028] · L
ISO 7730 Comfort Categories
- Category A: $-0.2 \le PMV \le +0.2$ ($PPD \le 6\%$) — Premium spaces.
- Category B: $-0.5 \le PMV \le +0.5$ ($PPD \le 10\%$) — New commercial buildings.
- Category C: $-0.7 \le PMV \le +0.7$ ($PPD \le 15\%$) — Existing buildings.
Key Engineering Assumptions
- Steady-state human body thermal equilibrium.
- External mechanical work $W = 0\,\text{W/m}^2$.
- Uniform clothing distribution across body surface.