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If 5000 tempering furnaces use three-dimensional flow fans?
A few days ago, there was a hot topic that the cumulative sales volume of NorthGlass tempering furnace has exceeded 5000. In addition to the excitement, the author is thinking about a question, what if these 5000 tempering furnaces are all equipped with three-dimensional flow fans?
Let us take 1B50 building glass horizontal tempering furnace for example, which is equipped with A 315kw cooling fan (GB18613-2 energy efficiency motor, 0.9 power factor, 95.6% motor efficiency) , and based on the working time of each tempering furnace for 10 years, 10 months per year, 16 hours per day, 30% of full load operating time of the fan and 1 Yuan per kWh of industrial electricity, different energy efficiency grades for 5000 tempering furnaces ( “Energy Efficiency Limit and Energy Efficiency Grade of GB19761-2020 Fan” ) are calculated as follows:
|
Take coefficient of total pressure Ψ=0.64, specific speed n=40 for example |
Fan efficiency with different energy efficiency grades |
Air power of single fan (kW) |
Shaft power of single fan (kW) |
Power consumption of single fan (kW) |
Electricity consumption |
|
Third energy efficiency grade |
73% |
236 |
329 |
383 |
27.6 billion |
|
Second energy efficiency grade |
80% |
236 |
301 |
349 |
25.1 billion |
|
First energy efficiency grade |
86% |
236 |
280 |
325 |
23.4 billion |
The table above shows us that the electricity amount difference between fans with different energy efficiency and energy grade are very big during 10 years, which I think is a gold mine that we ignored.
Legend of streamline and field for two-dimensional impeller
Legend of streamline and field for three-dimensional impeller
In the process of tempered glass processing, the energy consumption of fan accounts for about 30% of the total energy consumption, and the efficiency of fan directly affects the production cost of each tempered glass. The fan with high energy efficiency grade can greatly reduce the operating cost of the furnace, so that enterprises can really save money, and saving money is making money.
At present, energy efficiency grade of cooling fan equipped for new glass termpering furnaces from Luoyang NorthGlass Sinest Technology Co., Ltd. is higher than the second grade (GB19761-2020). The efficiency of the cooling fan can be obviously improved if customer chooses the new design of the three-dimensional flow cooling fan with three-dimensional flow theory. The energy efficiency index of the three-dimensional flow fan larger than 300kw can reach the first energy efficiency grade (GB19761-2020), which can effectively reduce the operating cost.
