Energy savings in circulating water systems

You want to use a water turbine instead of an electric motor, right? The driving force for the turbine comes from the excess flow rate and excess head of the system. After the modification, the circulating water supplied by the water pump passes through the turbine, causing it to rotate. The output shaft of the turbine is directly connected to the fan, thereby driving the fan to rotate. This is one of the options. There are also energy-saving solutions that involve modifying motors to optimize energy use; many companies are using such approaches, so it’s up to you to make the choice.

Those driven by water are called hydroturbines, and they are found only in hydroelectric power stations; under other conditions, the energy of water is not sufficient for utilization. Those driven by steam are called steam turbines. In some chemical plants, such devices are referred to as energy recovery units. Nuclear and thermal power stations operate on the same principle, all involving the conversion of the energy of a medium into mechanical energy

I envision using a combination of a water turbine and an electric motor, similar to the BPRT fans in ironmaking systems – where the kinetic energy of the gas is combined with that of the electric motor to drive the fan; when there is pressurized gas, both the electric power and the gas are used to drive it, while when there is no pressurized gas, only the electric motor is used for driving

I’m not sure if any manufacturers produce these small ones

This type of equipment is also known as turbine-based energy recovery devices; it is generally used to utilize the energy contained in high-pressure and high-temperature waste liquids and gases in large factories. Streams that are discontinuous, unstable, or too small to have any value for recovery cannot be utilized with this approach

The idea is good, but the equipment used for recycling is usually quite large. As LZ mentioned, using such large recycling devices may not be cost-effective

It's good to have ideas for saving energy. Leave professional tasks to professional teams. I specialize in energy conservation; we can interact.

Currently, the main energy-saving solutions in the energy-saving market are essentially three types: one is energy recovery, such as heat recovery from flue gas or air compressors. This is the most acceptable. The second type is energy management for savings; for example, controlling energy consumption based on temperature levels – this is also what manufacturers are most willing to accept. Three are to improve the operational efficiency of equipment, such as replacing inefficient pumps with more efficient ones. This is a technology with relatively high energy-saving efficiency, but manufacturers are unwilling to invest money in it. The manufacturers have never been able to figure out the principle behind it, and the companies specializing in energy savings won’t explain it either, because if they did, there would be no such thing as a trade secret anymore. Do not consider energy conservation as high technology, but rather as a service. The more money you spend, the higher the energy savings you will achieve. If a manufacturer is pursuing energy savings but is not even willing to aim for an annual return on investment of 100%, then it will not be able to achieve effective energy savings; at the very least, it won’t be able to hire professional energy-saving teams to carry out thorough measures for energy reduction. I have been working in the field of energy conservation for five years, and I have encountered too many cases of fake energy-saving measures. Replacing the motor can save more than 10% in energy consumption, but this is impossible and very difficult to achieve; unless you use an inverter, don’t even think about it. The question is: if an up-converter is already used, why then ask the energy-saving manufacturer to replace the so-called motor?

If the cooling tower is replaced from a reducer with a turbine, water pressure is required; can the water pump be used to generate this pressure?