... , YunHangFei low cost.3. forced ventilation, boost output quickly, full.4. Structure is compact, easy installation, reduced the boiler room ... pot of large volume, flat-front applicable load ability6. Burning full, heated area is big, adopt effective, the thermal efficiency ... kj/kg)18757Fuel Consumption(Kg/h)17033033065665698098016201620Heat Efficiency (%)707272727281818181 DZL-type steam boiler