On the contrary boiler No one is familiar with it. Many industries such as daily life, chemical production, food processing, hotel and hotel, paper making, wine making and so on all need to use boilers to provide heat. In the face of so many boiler manufacturers in the market, how should we choose the right equipment? How many boilers should we choose? How big boilers? Hot water boilers or steam boilers? Condensing or non condensing? Here are the answers for you.
How many boilers do you choose?
When we buy a boiler, we should take into account that when a boiler fails, there should be an emergency backup plan. If your enterprise needs higher boiler, we suggest that you buy 2 boilers at a time. Now there are gas module boilers, and they can be used in parallel with each other.
Especially when the boiler is used for heating, there should be no less than two units. If one of them stops for some reason, the design of the remaining boiler should be in line with the owner's demand for heating.
When there are boiler failures in cold areas and cold areas, the total heat supply of the remaining boilers should be guaranteed 65% and 70%. Beijing can be supplied to 8~9 centigrade according to 65% heating, and it can be supplied to 6 centigrade by heating 70% of Harbin. In this way, even if a boiler fails, it will be warmer than the winter in the south.
How big is the boiler?
We all know that when selecting the tonnage of the boiler, we should choose the heat load according to the actual demand of the enterprise, but we can not simply and roughly calculate how big the heat load will be to choose a large boiler.
This is because the efficiency of the boiler decreases when it operates at low load. We suggest that the thermal efficiency of the boiler should not be less than 50%.
For example, hotels, winter heating, only hot water supply in summer, if the total load to choose the boiler, then only in summer heating water bath, boiler operation load is very low, and efficiency will also decline. Therefore, we should first calculate the thermal load of each use, and then choose the equivalent capacity according to the use situation. This system is economical in investment, simple in system and good in mutual preparation.
In addition to the kitchen, laundry, high temperature disinfection and air conditioning humidification in winter, the heat load of steam must be used, and the remaining heat load should be a hot water boiler.
Do you prefer steam boiler or hot water boiler?
The traditional heating method adopts a single steam boiler as the heat source, and then uses the plate to change the heat into hot water. This is easy to see, but the two heat exchange has lost a lot of heat. So what we recommend is heating water, sanitary hot water, process hot water and so on, using hot water boilers to directly heat the water, and use steam stations (food processing, hospital disinfection, chemical production, etc.) to use steam boilers. Steam can be used for heat transfer unless the total amount of hot water is very small.
Condensation or non condensation?
When the design temperature of the heating system is less than or equal to 50 degrees, the condensing boiler should be adopted.
Condensing boilers recover the heat from the flue gas and raise the efficiency of the boiler. However, condensing boilers are not applicable everywhere.
Because the natural gas is used as a fuel gas boiler, the dew point temperature of the flue gas is 55 degrees (the water vapor in the air becomes the dew point temperature). When the backwater temperature of the system is higher than 50 degrees, the condenser can not play a role. Therefore, only when the backwater temperature is less than or equal to 50 degrees, can the condensing boiler achieve energy saving.
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