Is the energy consumption per unit of a device higher the smaller its size?
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Why is this? ? ? ?
The device is small; first, it has poor resistance to fluctuations, which results in higher energy consumption. Second, the requirements in terms of human and material resources for its operation are greater compared to larger devices, leading to higher investment costs. Third, due to its small size, it experiences high heat losses
If the device is small, the value of energy recovery is low and thus no recovery takes place; whereas with a larger device, it is possible to generate recovery value from small, scattered amounts of energy
Thank you, but since the energy consumption is lower, shouldn’t the manpower and resources also be reduced?
Mm-hmm, that makes sense. Thank you. . .
You need to calculate it based on the processing capacity per unit. For example, in a plant with a capacity of 1.4 million tons per year, one shift consists of only eight people; but for a plant with a capacity of 10,000 tons per year, at least three people are required per shift
The cross-sectional area (conveying capacity) of a pipe is in a quadratic relationship with the pipe diameter (radius), given by πR2, while the surface area of a pipe is in a linear relationship with the pipe diameter (radius), given by πD. The greater the processing volume, the smaller the surface area relative to the pipe, and the less heat loss there is. The greater the processing volume of the device, the stronger its resistance to interference, the smaller the excess in various energy consumptions, and the lower the energy consumption.
Take heat exchangers as an example: to achieve good heat transfer, a certain area of the heat exchanger and an appropriate amount of energy are required. In other words, this is what’s considered the basic version. As for pumps, to make them operate, power must be supplied. In cases like these, if the production volume increases, the amount of energy/power needed only increases slightly (or even not at all; for instance, the backflow control valve on the pump outlet can adjust this). So, the higher the production capacity, the lower the unit cost – that’s the principle behind it