Heating Temperature Affects Energy Saving
- Is a lower heating desorption temperature in the regeneration process more energy-efficient?
For the same adsorbent and a fixed adsorption efficiency, the energy required for desorption and regeneration is also necessarily fixed.
That is, the energy consumption required for heating regeneration is a constant value. - For example, there are two sources of energy consumption required for an externally heated dryer:
1. The blower draws in external air to create a regeneration airflow, and the operation of the blower requires energy.
2. The heater raises the temperature of the regeneration airflow sent by the blower, and the heating of the heater requires energy. - The above blower has a fixed rotation speed and a fixed air volume, meaning its energy consumption value is fixed.
If the temperature rise at the heater inlet is 50℃ and the heating temperature is raised to 150℃, the temperature rise value ΔT is 100℃. Assuming its power consumption is 100kW, if the heating time is 4 hours, the total energy consumed by the heater is 400 kWh.
If the above conditions are changed to raise the heating temperature to 200℃, the temperature rise value ΔT becomes 150℃, and its instantaneous power consumption will increase to 150kW, meaning the heater's power at this moment is 50% greater than the original.
However, since the energy consumption for regeneration is fixed, although the power increases, the time can be shortened.
In other words, no matter how the temperature is adjusted, - The final conclusion that can be calculated is that the regeneration energy consumption of the heater is a constant value.
Regarding the heater, regardless of whether the heating temperature is high or low, the energy consumed by the heater remains the same.
What changes is rather the energy consumption of the blower.
The lower the temperature, the longer the heating time, and the longer the operating time of the blower.
Therefore, when the heating temperature is low, the energy consumption of the blower increases! - This deduction seems to be a complete departure from the arguments we first heard.
If we further consider the influence of heating temperature and moisture contamination, should micro-heat regeneration dryers,
or manufacturers that boast a heating temperature of only 160℃, be ashamed?
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