Energy saving and environmental protection gas heating hot water boiler how to choose?
Building heating, domestic hot water, steam applications, many commercial places need to rely on heating hot water boilers for heating. So how do you choose it?
First, how to determine the capacity and number of heating hot water boilers
The volume of heating hot water boiler room is generally calculated according to the heating area and the amount of domestic hot water.
After the total heat demand is determined, the selection of equipment capacity and number of stations, including standby heating hot water boiler, can be considered. How to choose the capacity of the equipment? Is it a large tonnage or a small tonnage? This should be determined according to the thermal use characteristics of the project, the operation efficiency of the heating hot water boiler in the actual operation state, and whether the total amount of heat output of the heating hot water boiler matches the thermal demand of the user.
Each project has its own unique thermal demand usage characteristics, but also has frequent changes in common. As a result of this influence, the heating hot water boiler will operate between 20% and 100% of the rated load most of the time in the actual use process, otherwise there will be excessive heating waste of energy, that is to say, excessive heating will waste energy.
When choosing a heating hot water boiler, you should focus on:
1. The heating hot water boiler can accurately adjust the output load according to the actual heat demand of the user;
2. Whether the heating hot water boiler can maintain stable and efficient operation under the condition of variable load or partial load. These two aspects are the key point to solve the question of whether to choose large tonnage or small tonnage.
After the capacity of a single module heating hot water boiler is determined, according to the total heat required for heating previously calculated, the number of heating hot water boilers and the number of standby heating hot water boilers are calculated.
Third, how to select energy saving and environmental protection hot water heating hot water boiler
Hot water heating hot water boiler how to choose? How to identify heating hot water boilers that can really meet the needs of users for energy saving and environmental protection? We might as well judge the structure of the gas-heated hot water boiler. Gas heating hot water boiler consists of three parts, pot (heat exchanger) furnace (burner) controller. Therefore, whether the heating hot water boiler is energy-saving and environmental-friendly depends mainly on the performance of heat exchange system and combustion system.
(1) Heat transfer system
According to the material, the heating hot water boiler can be roughly divided into copper tube heating hot water boiler, steel heating hot water boiler and cast iron heating hot water boiler. In these three types of heating and hot water boilers, the energy saving effect of the copper tube heating hot water boiler is better, because the thermal conductivity coefficient of copper is 7 times of ordinary steel, 8 times of cast iron, the same heat exchange area, the heat exchange efficiency of copper heat exchanger is much higher than that of other materials.
(II) Combustion system
Combustion system is the key to determine whether heating hot water boiler equipment is energy saving and environmental protection. Full premix low nitrogen combustion technology has made outstanding contributions in clean heating engineering projects.
It can make the proportion of air and gas accurate and constant, so that nitrogen is difficult to react with oxygen. It can also make the high temperature radiation zone of flame small, and the flue gas can be quickly separated from the high temperature area after the smoke is produced, so that the nitrogen and oxygen in the flue gas do not have enough energy to react, and the NOx emission is reduced to less than 30mg/m. However, the combustion control technology of the manufacturer is required to be high.
(3) Control system
The heating and hot water boiler products with the combination of environmental protection and energy saving and high technology can not be separated from the intelligent control system.
The key problem in type selection is not only to combine its own heating requirements and characteristics, but also to ensure the quality of products. Only by deeply understanding the user's needs and their thermal use characteristics, and selecting on the basis of high-tech products can the desired results be achieved.
