0.5 t 1 t 2 t 4 tons of gas boilers Tubular Tubular price of coal-fired steam boiler steam boiler hot water boiler oil furnace boiler gas boiler electric boiler fuel what is tubular boiler, tubular boiler "is arranged by design than long tube composed of one end of the tube to pump water supply, water (refrigerant) after heating the water in the pipe segment, evaporator, (overheating), the need to generate steam from the upper header pipe. It is different from the natural cycle of vertical pipes boilers tubular boiler no drum, it is (composed of the upper and lower body header, columns, pipes, etc.) from the boiler and external separator, water pumps, oil pumps, burners and other components. It is essentially a vertical straight pipe Fuel gas boiler compact tubular boilers, small footprint, save steel, safety factor, high thermal efficiency (> 94%) of small air pollution, dust emissions in line with national standards. boiler automatic ignition, flame protection, load regulation high and low water level control, overpressure protection, etc., are automated operation, the boiler start-up time is short, only a few minutes to reach the required two operating load, the main features of tubular boiler: 1, water capacity less (1t / h boiler is about 140L), it produces steam quickly, usually the amount of steam generated at the rated pressure of only about 5min because less water capacity, storage less boiler pressure with load changes. This requires a set of reliable and responsive automatic combustion control device and water supply installations. 2, the tube can be freely arranged, so compact, burning a special way so that the volume is greatly reduced, but the boiler furnace volume heat load, water heating is completed within a tube to the evaporator circulation rate is low, close to 1, and is likely to heat transfer deterioration, resulting in burst pipes and fatigue cracks and other faults, it requires strict control of the wall temperature. 3 within the safe operating range, this compact boiler construction, maintenance is poor. Guan flow boiler is almost impossible to repair. Once damaged, only the replacement of the new furnace, which requires strict control of manufacturing quality, the implementation of strict quality management system, the manufacturer of high-quality products to be qualified, while its water supply and water quality requirements higher , water supply and water quality standards should be strictly controlled to ensure that its service life 4, steel consumption is small, tubular steel consumption per unit of production of steam boilers ratio of 1.1: 1 (ie, 1.1 tons of steel / ton steam), while the average coal-fired boiler of about 4-6 per ton / ton steam. 5, is generally believed that this structural form of the boiler, the evaporation of suitable 4t / h or less. If you go down to the increased capacity, it is the boiler and other forms of (eg horizontal internal combustion boiler) compared to the superiority of small. This boiler is often just do 2t / h. the largest capacity in general 3t / h or less