FLIR thermal imaging and surface measurements taken at the Takeda Vienna boiler house on 4 May 2026 identified 30.4 m² of uninsulated hot surfaces across both Hoval steam boilers, the Loos hot water boiler and shared headers. Surface temperatures reach 210 °C on rear inspection hatches. Replacing exposure with Inzonex Modular Insulation cuts losses by 95.2% — recovering 363,899 kWh of heat per year.
All surface temperatures taken with a calibrated FLIR thermal imaging camera. Heat-loss calculation uses 20 °C as the annual-average ambient inside the boiler house. Burner duty: 24/7/365 rotating between the two Hoval units; Loos HW boiler runs 6 months per year (heating season).
Six general photographs and three FLIR thermal scans, taken across the boiler house. The thermal imagery shows surface temperatures of 119–210 °C on the elements scoped for Inzonex covers.
Every uninsulated hot surface combines two heat-transfer paths — natural convection and radiation. At 210 °C, radiation alone reaches 2,267 W/m² before adding convective losses. None of these elements are currently covered.
Rear inspection hatches, water-column valves, safety valves, sensor assemblies — all running at 180–210 °C exposed to ambient air.
Both steam boilers run rotating duty/hot-standby year-round. Every kelvin of ΔT bleeds energy through 30.4 m² of bare surface.
404,332 kWh of natural gas burned to compensate for the leak — directly quantifiable on Takeda's Scope 1 emissions footprint.
Standard convection + radiation energy balance per element. Surface temperatures from FLIR camera (non-contact). All inputs and outputs documented per element in the calculation annex.
L = characteristic height of element (m).
Iterated until conduction through 50 mm Paroc Lamella balances convection + radiation from the new outer fabric. Converged values: surface ≈ 28–31 °C across all elements (≤ 45 °C spec met everywhere).
Each element calculated individually. Detailed per-element worksheets — area breakdown, h_conv, q_rad, before/after losses — are provided in the Calculation Annex.
| # | Element | T (°C) | Area (m²) | Before (W) | After (W) | Saved (W) | Reduction | h/yr |
|---|---|---|---|---|---|---|---|---|
| 1 | Front doors — steam boilers (×2) | 119 | 4.200 | 5,108 | 288 | 4,820 | 94.4% | 8,760 |
| 2 | Water column valves (×2 boilers) | 181 | 1.250 | 3,752 | 146 | 3,606 | 96.1% | 8,760 |
| 3 | Feed water lines (×2 boilers) | 105 | 4.538 | 5,518 | 270 | 5,248 | 95.1% | 8,760 |
| 4 | Rear inspection hatches (×2) | 210 | 3.808 | 12,670 | 506 | 12,164 | 96.0% | 8,760 |
| 5 | Support brackets (×4) | 85 | 3.240 | 2,424 | 148 | 2,276 | 93.9% | 8,760 |
| 6 | HW header pumps (shared) | 72 | 1.596 | 997 | 58 | 939 | 94.2% | 8,760 |
| 7 | Safety valves (×4) | 181 | 0.416 | 1,248 | 48 | 1,200 | 96.2% | 8,760 |
| 8 | Bottom inspection hatches (×2) | 180 | 0.640 | 1,688 | 74 | 1,614 | 95.6% | 8,760 |
| 9 | Loos HW boiler — front door | 115 | 3.847 | 4,322 | 254 | 4,068 | 94.1% | 4,380 |
| 10 | HW lines — steam side (×2) | 105 | 3.632 | 4,416 | 216 | 4,200 | 95.1% | 8,760 |
| 11 | Centre valve + sensor DN50 (×2) | 181 | 0.550 | 1,650 | 64 | 1,586 | 96.1% | 8,760 |
| 12 | Condensate return line | 95 | 0.914 | 889 | 48 | 841 | 94.6% | 8,760 |
| 13 | Green Wilo pumps (×5) | 72 | 1.720 | 1,076 | 63 | 1,013 | 94.1% | 8,760 |
| TOTAL | 30.351 | 45,758 | 2,183 | 43,575 | 95.2% | — |
Bars show heat loss per element group, before (red) vs after Inzonex (green) — same scale across all elements.
All-inclusive: 115 modules manufactured at our Ukrainian facility, delivered to Vienna, installed on site (including detail measurements for the three sections still pending temperature confirmation).
Outer surface drops from 119–210 °C to ≤ 45 °C. Eliminates burn risk on every front door, hatch and valve cluster operators interact with daily.
Modular zip closures — every covered element can be opened, serviced and re-closed in minutes. Versus glass-wool + cladding which is destroyed each time.
Silicone-coated fabric, stainless hardware, mineral-wool core. Re-usable across boiler servicing cycles — no recurring replacement cost.
Operating hours, gas price, two estimated surface temperatures (Loos front door, condensate return) and boiler efficiency.
2-day on-site measurement of every element — dimensions, flange specs, mounting pattern.
≈115 modules built in 4–5 weeks, sea/road freight to Vienna.
Two-person team, 3–4 days on site, fitting against running boiler rotation. Handover with thermal verification.