⚙️ Oil Burner Wizard

Power • flow • nozzle • efficiency • now also: kW from annual consumption & hours

🧪 Oil type

📆 0. Burner power from annual consumption

⏲️ Operating hours per year (h)

🛢️ Annual consumption (liter)

🔥 Burner thermal power 35.4 kW

⛽ Average flow: 3.57 l/h | 3.00 kg/h

(at η=100% burner power; actual boiler output = burner power × efficiency)

Example: 1400 h/year, 5000 liters EL → avg. flow = 5000/1400 = 3.57 l/h. With 11.8 kWh/kg, ρ=0.84 → 3.57 l/h = 3.00 kg/h → 3.00 × 11.8 = 35.4 kW burner (at 100% efficiency).
Our calculation takes oil type (EL or S) into account.

1. Boiler power → flow

🔹 Q (kW) 🔹 η (%)

⛽ 3.20 kg/h

⛽ 3.80 l/h

2. Nozzle size (US-gph)

🔹 Flow (l/h) 🔹 Pressure p (bar) 🔹 Ref. pressure (bar)

🧩 0.75 US-gph

3. Measuring time

🔹 Flow (l/h) 🔹 Volume (liter)

⏳ 6.0 min

4. Flue gas η

🔹 measurement 🔹 Flue gas °C 🔹 Intake air °C

📈 92.5 %

loss 7.5%

📏 Suction line indication (EL)

Length (m) Height difference (m) Flow (l/h)

Min. diameter 10 mm

Advised 12 mm

🔥 Burner power from annual consumption
Operating hours / year	1400 h
Annual consumption	5000 liter
Oil type	Light fuel oil EL
Average flow	3.57 l/h \| 3.00 kg/h
Burner thermal power (100% η)	35.4 kW
⚙️ Boiler & nozzle
Boiler power Q	34.0 kW
Efficiency η	90.0 %
Resulting flow	3.20 kg/h \| 3.80 l/h
Nozzle flow (input)	3.80 l/h
Pressure / ref pressure	12.5 bar / 7.0 bar
Nozzle size (US-gph)	0.75 gph

⏱️ Measuring & flue gas
Flow for time test	20.0 l/h
Volume collected	2.0 liter
Measuring time	6.0 min
CO₂ / O₂	CO₂ 13.5 %
Flue gas temp	190 °C
Intake air temp	20 °C
Delta T	170 K
Calculated efficiency η	92.5 %
Flue gas loss	7.5 %
📏 Suction line (EL)
Length / height diff	10 m / 2 m
Min. diameter	10 mm
Advised diameter	12 mm