浅谈暖供热工程中怎样选购锅炉
    2014-9-16 11:22:40  文章来源:http://www.jnlzsb.com
    真空热水锅炉是利用负压状下汽一水换热(真空凝结换热)而加热盘管中的循环水,由于炉内压力低于大气压,因此是最安全的锅炉,同时,效率也是最高的,但由于真空锅炉的换热原理的限制,其出水温度一般在85℃以下,一般供热系统的供回水温度为80℃/60℃。
    Vacuum hot water boiler is used under the negative pressure of steam heat exchange monohydrate (vacuum condensation heat exchange) and the circulating water in the heating coil, due to the pressure below the atmospheric pressure in the furnace, so it is the safest boiler, at the same time, the efficiency is highest, but because of the limitation of vacuum boiler heat transfer principle of the water temperature below 85 ℃, the average heating system for the return water temperature of 80 ℃ / 60 ℃. 
    承压热水锅炉,是在锅筒内装满水,通过炉膛直接燃烧加热形成热水,一般承压热水锅炉的出水温度能达到100℃左右,要确保热煤在常压条件下不发生汽化,供水温度一般不超过95℃。承压锅炉系统需要设置水-水换热器,热水系统必须设有一次和二次系统,系统比较复杂,附属设备较多,机房面积大,投资费用也相对较高,另外,由于系统带压,安全性方面也差些。
    Pressure hot water boiler, it is filled with water inside the drum, formed by direct combustion chamber of a stove or furnace heating hot water, generally pressure hot water boiler water temperature can reach 100 ℃ or so, make sure that the thermal coal under the condition of normal pressure not vaporize, water temperature is generally not more than 95 ℃. Pressure on the boiler system need to set up the water - water heat exchanger, hot water system must be equipped with primary and secondary system, the system is more complex, the accessory equipment is more, room area is large, investment cost is relatively high, in addition, because the system pressure, safety also. 
    常压热水锅炉也称为大型燃油(气)热水器,是锅炉燃烧加热水,而将换热盘管浸在热媒水中,热媒水升温后通过水-水换热作用原理加热盘管中的水,一般供、回水温度能够达到95℃-70℃左右。由于该系统有接口直通大气,因此,其系统内水压为常压,所以称常压锅炉。
    Atmospheric pressure hot water boiler is also known as large fuel oil (gas) water heaters, boiler combustion is to heat water, and heat exchange coil tube immersed in heat medium water, after the heat medium water heats up through the water - water heat transfer principle, the water in the heating coil, general supply and return water temperature can reach 95 ℃ to 70 ℃ or so. Because the system has the interface through the atmosphere, therefore, the system pressure to atmospheric pressure, so that normal pressure boiler. 
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