Calculation of the necessary power for heating liquids other than water. For the calculation you need the following information:
m = (mass) weight of the liquid to heat in kg / 1 litre water = 1 kg
c = (heat capacity) Coefficient of the liquid (Table book or a physics book)
From this table you can easily take the necessary heat load for heating water
(from 8 ° C - at 100 ° C).
water quantity | heating time in minutes | |||||
---|---|---|---|---|---|---|
20 | 30 | 40 | 50 | 60 | 70* | |
necessary heat load in kW | ||||||
10 | 6,4 | 4,3 | 3,2 | 2,6 | 2,1 | 1,8 |
20 | 12,8 | 8,6 | 6,4 | 5,1 | 4,3 | 3,7 |
30* | 19,3 | 12,8 | 9,6 | 7,7 | 6,4 | 5,5* |
40 | 25,7 | 17,1 | 12,8 | 10,3 | 8,6 | 7,3 |
50 | 32,1 | 21,4 | 16,1 | 12,8 | 10,7 | 9,2 |
60 | 38,5 | 25,7 | 19,3 | 15,4 | 12,8 | 11,0 |
70 | 45,0 | 30,0 | 22,5 | 18,0 | 15,0 | 12,8 |
(Indicative of an efficiency of 50%)
* see Example
In this table you can see the gas consumption of the various burner.
burner | natural gas m3/h | liquid gas kg/h |
---|---|---|
3,5 kW | 0,37 | 0,27 |
5,8 kW | 0,61 | 0,45 |
9,3 kW | 0,98 | 0,72 |
12,8 kW | 1,35 | 1,00 |
In practice it consumes about 50% (benchmark), because the hob is not consistently operating at full power.
The values in this table are minimum values for the required air supply of each burner.
burner | air requirement / hour |
---|---|
3,5 kW | 3,9 m3 |
5,8 kW | 6,5 m3 |
9,3 kW | 10,4 m3 |
12,8 kW | 14,2 m3 |
heat load | gas bottle | pressure regulator | |
---|---|---|---|
in continuous operation | |||
3,5 kW | 11 kg | 1,5 kg/h | |
5,8 kW | 11 kg | 1,5 kg/h | |
9,3 kW | 2 x 11 kg oder 33 kg | 1,5 kg/h | |
At 50% interruption: | |||
5,8 kW | 5 kg | 1,5 kg/h | |
9,3 kW | 11 kg | 1,5 kg/h | |
12,8 kW | 2 x 11 kg oder 33 kg | 1,5 kg/h | |
Bei stoßweise Entnahme (20 minutes): | |||
12,8 kW | 5 kg | 1,5 kg/h |
technical term / Shortcuts | explanation/ translation |
---|---|
CE | Conformitée Européenne |
BTU | British Thermal Unit = power unit |
liquid gas | Butane, Propane and their mixtures |
valve switch | Gashahn mit Schaltknebel |
main material | usually the material from which the device mainly consists (for example case), valves, piping, fittings in high quality |
Injektor | gas / air mixing unit |
kW | power unit in kilowatt (=1000 watt) |
Magneteinsatz | Bauteil der Flammenüberwachung |
Mischrohr | gas / air mixing route |
Nwbel. | Abk. für Anschlußleistung eines Gerätes |
piezoelectric igniter | Zündspannungserzeuger |
Q | heat stress |
Qn | nominal heat load in kW |
thermocouple | component of the flame monitoring |
Venturi | part of the injector |
Wärmebelastung | heat load of the burner in kW |
pilot burner | produces a small flame at the burner |
ignition electrodes | Sparkplug on the burner |
Zündkable | Cable between the igniter and electrode |
Zündleitung | Zuleitung Zündbrenner |
Note: Gas devices have to be protected for security reasons against Weather influences.
until about 10000 kcal/h = 11,5 kW: hose Ø 8 mm until L= 2000 mm
until about 16000 kcal/h = 18,6 kW: hose Ø 12 mm until L= 2000 mm
natural gas: 20 mbar
liquid gas: 50 mbar
We like to offer special designs according to specific customer requirements and technical requirements.
Please clarify in advance:
- Purpose
- What should be heated (surfaces, container,...)?
- Measurements with sketches (Take account of the combustion chamber)
- Which medium is heated (metal, liquid, air,...)?
- What max. Temperature should be achieved?
- In which time the temperature must be reached?
- how much power per hour?
- What type of gas is available?
- Brennerregulierung: manuell, thermostatisch, vollautomatisch?
Comprehensive technical calculation of gas burners are not contained in the prices of the burner. We offer engineer performance separately.
All burners are valid under the rules of technology and manufactured in accordance with the DIN 4788. All components in the security area are certified.
The burners can be used for natural gas and liquid gas. A specialist company can easily adjust the devices with the conversion instructions.