Comparison of operating costs between coal-fired boilers and gas-fired boilers for 20,000 square meters house heating boilers

20,000 square meters house heating boilers can be divided into electric heating boilers, oil heating boilers, gas heating boilers, coal-fired heating boilers, biomass heating boilers, etc. According to different fuels. The fuel includes: diesel, kerosene, heavy oil, etc.the gas includes: natural gas, liquefied gas, city gas, biogas, etc.  
ZBG Group received customer consultation: Is the coal-fired boiler for heating boilers of 20,000 square meters good? Or is it good to use gas boilers? What are the operating costs of coal-fired boilers and gas-fired boilers? What is the difference between the two?

First, What’s the capacity of coal-fired boilers are used in 20,000 square meters house heating ?

The ZBG Group calculates the capacity of the boiler according to the heating area. The heating area of 1 ton coal-fired boiler can reach 6,000-8,000 square meters. So, 20,000-square-meter residential can used a 4 ton coal-fired boiler.
 
Parameters of4 tons coal-fired boilers for 20,000 square meters heating:
 
Boiler specifications: DZL2.8-1.0/95/70-AII
Rated thermal power: 2.8MW
Rated water pressure: 1.0MPa
Effluent temperature: 95 ° C
Backwater temperature: 70 ° C
Design fuel: Class II bituminous coal
Factory mode: assembly

Second, What’s the capacity of gas heating boiler for the 20,000 square meter ?

According to the calculation formula of the district heating area and boiler tonnage of the ZBG Group: 20,000-square-meter residential heating area with a 4-ton gas boiler.
 
Parameters of 4 ton gas heating boiler for 20,000 square meters:
 
Boiler specifications: WNS2.8-1.0(1.25)/95(115)/70-Y(Q)
Rated thermal power: 2.8MW
Rated water pressure: 1.0MPa
Effluent temperature: 95 ° C
Backwater temperature: 70 ° C
Design fuel: Class II bituminous coal
Factory mode: assembly