Energiekosten

Total costs for natural gas heating are €

Flow in liters per hour	l/h
Begin temperature	in °C
Temperature you want
Needed energy:	kWh ₍₁₎
Electric cost (per kWh) ₍₂₎	€ per kWh		The total cost with electicity €
Cost of gas ₍₂₎	€	per m³ Natural gas
Energiy of one m³ natural gas₍₃₎	MJ/m³	(In Holland ca 32 MJ) ₍₃₎
Gas Heater efficiency	%
The density of water is		with the temperature of above.