How do we use the fluid cooling tower correctly in the transition season
2022-06-23
Jiangsu Yunuo Cooling Technology will introduce to you how to use the closed cooling tower correctly in the transition season.
The closed cooling tower is a kind of equipment that places the tubular heat exchanger in the tower, and the heat exchange between the circulating air, the spray water and the circulating cooling water achieves the cooling effect. In recent years, closed cooling towers have been more widely used in power electronics, machining, air conditioning systems and other industries.
The planning of many closed-circuit cooling tower equipment and the planning parameters and thermal function curves provided to users are based on summer climatic conditions. The temperature can reach below 15℃. Using the relevant sample technical parameters of the cooling tower during summer operation will cause the cooling tower to fail to achieve the expected cooling effect during operation or consume too much energy, which is not conducive to energy saving. And the same is a closed cooling tower, its spray overflow is very small, because after all, the spraying work is carried out in the tower, it can be controlled at a few thousandths, we calculate it according to 5 thousandths, the same It also works for 10 hours and operates 280 days a year. It is basically a closed cooling tower of 4500 tons per hour to achieve the same cooling fluctuation. Then the calculation result: 4500*0.5%*10*280=63000 tons, no It is difficult to see that the waste of spray water resources due to different planning structures has increased by more than 200,000 tons of fear.
After consulting relevant literature, it can be seen that in addition to the operating parameters of the cooling tower itself, when the outdoor air wet bulb temperature, dry bulb temperature, relative humidity and other parameters change, the thermal function of the cooling tower itself will also change, which violates its planned operating conditions. . In the transition season in March and November, the cooling tower function violates the planned working conditions by about 5.5 to 70%. In April, May, and October, the cooling tower function violates the planning conditions by about 6 to 70%. The cooling capacity of the cooling tower can be increased by increasing the inlet air speed of the cooling tower or increasing the cooling water inlet volume, but the corresponding adverse effects of reducing the energy consumption coefficient and increasing the outlet temperature will be brought about.
In the transitional season in November, the cooling tower can adjust the cooling tower water inlet and inlet wind speed according to the different primary evaluation conditions, and the cooling tower can meet the cooling requirements at this moment. In the transitional season (April, May, and October), due to the relatively high outdoor temperature, the performance cost of the cooling tower through variable wind speed adjustment is very high, and the economics of operating the cooling tower under such climatic conditions is relatively poor. When the cooling capacity required in the transition season is not large, it is recommended to use variable water volume conditioning first. The energy consumption coefficient corresponding to the variable water volume is about 5% higher than the energy consumption coefficient under variable wind speed. When the outdoor wet bulb temperature is at a relatively low level in the transition season, such as when the wet bulb temperature is 6°C or 8°C, it is advisable to carry out variable air volume adjustment, and while improving the relative cooling capacity of the cooling tower, it is satisfied that the relative energy consumption coefficient is not low at the expected level.
The above is the relevant content introduced by Jiangsu Yunuo Cooling Technology.
The Company is specialized in R&D, production and sales of a variety of water cooling products, such as closed cooling tower, crossflow tower, countercurrent tower, refrigerator, evaporative condenser, etc. In addition, the Company provides consulting of other relevant spare and accessory parts as well as technologies.
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