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Measures and methods for using air conditioners in the textile industry!
First, starting from the actual energy, develop a reasonable air conditioning standard for the textile industry
Industrial air conditioning standards and energy consumption in textile workshops are closely linked. At the current level, for every 1°C reduction in the temperature of the summer workshop, it is necessary to consume more than 10% of the cooling capacity. Therefore, the appropriate relaxation of the air conditioning standard in the textile industry means that the cooling capacity in summer can be greatly saved. The humidity standard of the textile factory mainly depends on the process requirements, and the relative humidity of the air is roughly controlled within the range of 50% to 80%. Summer is the peak period of air conditioning energy consumption. It is feasible to set the workshop temperature below “Southern 30°C/North 28°C”; the temperature is best controlled at 22~25°C in spring and autumn, and the winter can be based on the process characteristics of the product. It is set at 18~25°C as appropriate.
Second, the textile industry air conditioner implements variable air volume adjustment
The so-called variable air volume adjustment, in simple terms, is based on changes in the load of the shop, correspondingly increase or decrease the amount of ventilation. The variable air volume adjustment is mainly controlled by the fan, adjusting the air inlet blades and changing the blade angle. From the perspective of energy saving, it is most advantageous to use the fan speed control method.
1. For the worsted and woven fabric workshops with high air conditioning requirements and large capacity, rectification slip speed regulation, cascade speed regulation, voltage regulation speed regulation and frequency conversion speed regulation can be used. Generally, pressure regulation is adopted. Speed and frequency control are mostly. The voltage regulation speed is lower, but the motor needs to be replaced; the frequency conversion speed regulation can be equipped with a frequency conversion device on the basis of the original motor, and the operation is stable, the fault is small, and the adjustment is easy, which is especially suitable for the transformation of the old factory.
2. For workshops with low air conditioning requirements and small capacity, a multi-speed motor or a simple method of changing the belt and adjusting the blades can be used.
3, textile industry air conditioning should use efficient, energy-saving motor and fan.
Third, the rational use of return air, control the blower dew point
Reasonable use of return air not only stabilizes the temperature and humidity of the workshop, reduces production fluctuations, improves production quality, but also greatly reduces air conditioning energy consumption. Even in the transition period of spring, summer and autumn and winter, as long as the new and return air ratio and the use of circulating water spray washing air are regulated, the purpose of improving the air supply quality and saving energy can be achieved. Especially in the summer, as the outdoor wet bulb temperature increases, the amount of return air must increase accordingly, otherwise it will cause waste of cooling.
From the calculation formula of the cold load of the workshop and the cooling capacity of the air conditioner, it can be known that there is a close relationship between the temperature and humidity, the cooling load, the mixed air ratio and the dew point of the blower. Under normal circumstances, the smaller the dew point of the machine, the greater the amount of cooling required to spray the cooling air. The increase in the amount of return air reduces the enthalpy of the mixed air, and the required cooling capacity is also reduced.
