energy-saving oil hot water boiler

energy-saving oil hot water boiler

The heat loss of exhaust smoke is the largest of all kinds of heat loss in boiler. Generally, the heat loss of exhaust smoke is 6% of the heat fed into the furnace, and the heat loss of exhaust gas increases 0.5% when the temperature of exhaust gas increases by 12 ℃ and 15 ℃. So the exhaust temperature is one of the most important indicators of boiler operation. The following are several possible causes of increased flue gas temperature in the furnace: (1) slagging and ash accumulation on the heated surface. No matter it is the slag accumulation in the water-cooled wall of the furnace, or the ash deposition in the superheater, convection tube bundle, economizer and preheater, the thermal resistance of the flue gas measurement will increase, the cooling effect of the flue gas will become worse due to the deterioration of the heat transfer, and the exhaust temperature will rise. (2) excess air coefficient Big. Under normal conditions, the exhaust temperature increases with the increase of excess air coefficient at furnace outlet. After the increase of excess air coefficient, although the amount of smoke increased, the rate of smoke increased, and the convection heat increased, the increase of heat transfer was not as much as that of the increase of flue gas. It can be understood that after the increase of smoke speed, the flue gas leaves the heating surface without time to transfer heat to the working fluid. (3) the air leakage coefficient is too large. The flue gas leakage in the furnace and rear shaft of a negative pressure boiler is inevitable and the leakage coefficient allowed by a certain heating surface is specified. When the air leakage coefficient increases, the effect on the exhaust temperature is similar to that of the superheated air coefficient. And the air leaks away. The closer the furnace is, the greater the influence on the rise in exhaust temperature. (4) Water supply temperature. When the steam turbine load is too low or the high pressure heater is out of line, the feed water temperature of the boiler will be lowered. Generally speaking, if the fuel quantity is kept constant, the heat transfer temperature difference of the economizer decreases and the heat absorption of the economizer decreases when the feed water temperature is increased, which makes the exhaust temperature increase. (5) moisture in the fuel. The increase of moisture in the fuel increases the amount of smoke, thus increasing the exhaust temperature. (6) Boiler load. Although the boiler load increases proportionally, the amount of smoke, the amount of steam, the amount of water supplied, and the volume of air increase proportionally, however, the flue gas temperature at the furnace outlet increases proportionally. Increase, so that the exhaust temperature increased. After increasing the load, the outlet temperature of the furnace increases, the heat transfer temperature difference of the convection heating surface increases and the heat absorption increases. Therefore, the more the convection heating surface is, the less the influence of the boiler load on the exhaust gas temperature is. (7) fuel varieties. When the low calorific value gas is fired, the radiative heat transfer in the furnace decreases due to the decrease of furnace temperature, and the non-combustible components in low calorific value gas, mainly N _ 2, CO _ 2 and H _ 2O, increase the amount of flue gas, so the exhaust temperature increases. Although the excess air coefficient of furnace outlet is lower than that of coal burning, the ash content in the fuel oil is very low after the pulverized coal furnace is changed to burn oil, although the excess air coefficient at the furnace outlet is lower when burning oil. There is no larger ash particle in flue gas, and there is no cleaning effect of larger ash particle on the heating surface, and the convection heating surface is polluted more seriously. Therefore, combustion is not good, often smoke-emitting boiler smoke temperature rise. When there is a steel ball dust removal device at the tail, the exhaust temperature is slightly lower than that of burning coal because the tail is cleaner. (8) the operation mode of pulverizing system. For a closed pulverizing system with a silo, when the pulverizing system is in operation, as a part of the water in the fuel enters the furnace, the furnace temperature decreases and the flue gas increases, and the cold air leaking into the pulverizing system enters the furnace as a primary air during the operation of the pulverizing system. Reduction of air flow through air preheater To raise the exhaust temperature. On the contrary, when the pulverizing system is shut down, the exhaust temperature decreases.

Fangkuai boiler manufacturers tell you the importance of leakage protection-leakage protection is automatically cut off the power supply; overheating protection that is, when the boiler water temperature reaches the alarm temperature, automatically stop the burner and send an alarm; The secondary superheat protection means that when the boiler shell temperature exceeds 105 ℃, the operation of the Fangkuai boiler factory automatically cuts off the secondary loop and the boiler stops working. When the water level of the boiler is reached because of other reasons, when the water level is lower than the very low water level, the boiler will stop working and prevent the danger of dry burning. All-in-one insulation using glass cotton, Light weight, good heat preservation effect, less heat loss. White color board packaging, beautiful and generous, sealing good corrosion resistance, mechatronics, small space, easy to use. Gas-fired boilers are widely used in supermarkets, hospitals, schools, guesthouses, residential areas, bath centers, etc., fully automatic heating for users or provide bath water, domestic hot water. CWNS gas-fired energy-saving hot water boiler 1, Fangkuai boiler manufacturer computer-type hot water boiler controller, All the functions are magically stored on an intelligent chip, the boiler is turned on with one button, full automatic timing, fixed temperature operation, the user can set the start, stop the time, set up after the completion, do not need Special person on duty, easy to work, labor-saving. Gas-fired boiler 2, equipped with imported brand burners, high degree of automation, automatic purge according to controller instructions, electronic automatic ignition, automatic combustion, air, oil (gas) automatic proportional regulation, safe and stable performance, good combustion effect. And there is a extinguishing protection device to ensure the safe operation. 3, the fire pipe is inserted with flame retardant spoiler, slow down the smoke exhaust speed, strengthen heat transfer, smoke temperature from the smoke chamber is low, reduce heat loss, save fuel. 4, large font shows the water temperature, It is convenient to master the operation of the boiler and the system. The water temperature can be set at random from 10 ℃ to 90 ℃, and the boiler is fully automatic heating to the system or for Users provide life, bath with hot water.

The partnership, fast boiler for the user responsible attitude to have left a deep impression on our fireman boiler operation is not very skilled, fast deliberately sent a party of professional and technical personnel for our on-site supervision of installation, commissioning and training to ensure that the latter can operate our good boiler fireman. --customer feedback

Oil-fired boilers include oil-fired water boilers, oil-fired energy-saving hot water boilers, oil-fired heating boilers, oil-fired bath boilers, oil-fired steam boilers and so on. Oil-fired boilers are boilers fueled by light oil (such as diesel oil, kerosene), heavy oil, residual oil or crude oil. Oil-fired boiler, gas-fired boiler, electric heating boiler is more economical than electric heating boiler and more convenient to use than gas-fired boiler compared with vertical oil-fired hot-water boiler.

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