HOW TO REDUCE PEAK ELECTRICITY DEMAND AND LOWER WATER CONSUMPTION WITH HEATTANK?
Every company has to define their peak electricity performance in advance, which means they pay after a peak demand, which is the maximum they can use. If they exceed this value, they will be penalized, if they commit too much compared to the actual use, they pay unnecessarily more.
For example (not real numbers): a company commits 1.000 kW of electricity, so it pays 1 money/kW, which is 1.000 money per month. If they exceed the maximum power of 1.000 kW, they will pay a penalty for exceeding it, the amount of which is 3.000 money/kW, so if the peak demand for electric increases to 1.100 kW even for a short time, they will pay (1.100 – 1.000) * 3 = 300 money one-time penalty. Therefore, it is not worth exceeding the set value!
If they consume less, for example the real peak is only 800 kW, they will pay (1.000 - 800) * 1 = 200 money per month more unnecessarily. That's why it's not worth committing too much.
HeatTank thermal battery greatly reduces peak cooling requirements, which also reduces electrical power peaks for the entire building. So it supports the reduction of the peak electrical power.
On the other hand, the HeatTank heat accumulator increases the flexibility of the cooling system, so if the building's electrical power demand exceeds the specified value (there may be a surge in production or intermittent peak demand for different systems), HeatTank can reduce the cooling power. This prevents the committed value from being exceeded.
In the case of cooling towers or evaporative condensers (simplifying the process), evaporation of water increases the intensity of cooling.
As the cooling demand increases or the external temperature increases, the amount of water evaporated also increases.
HeatTank system can be charged at low loads and low external temperatures when water consumption is minimal.
The HeatTank is discharged during periods when water consumption would be high, so less water needs to be evaporated.
As the water used for evaporation is cheap in many places of the world, the payback of water-saving projects alone can take 7-8 years (cooling towers are often used alone to cool high-temperature processes, such as pasteurization, as a quasi-free-cooling system).
If the cooling tower functions as a condenser of a chiller, the savings are not significantly different from normal chillers and are calculated according to the same logic, and water savings can be achieved in addition to electricity savings.