Small Generator Matching Dry Cooler: Is it High and Low Temperature in One?

Small Generator Matching Dry Cooler: Is it High and Low Temperature in One?

The integrated high and low temperature dry cooler is a device capable of handling heat from different temperature ranges at the same time. It can effectively cool both high and relatively low temperature heat sources, integrating cooling functions for different temperature requirements in a compact equipment structure.

Conventional Dry Coolers without High and Low Temperature Integration

Many small generators supporting the dry cooler is not high and low temperature integration. This type of dry cooler is mainly for generator operation process generated by the higher temperature of the waste heat cooling. For example, the generator's windings, iron core and other components will generate a lot of heat when working, the temperature may rise to a high level, the design of the dry cooler focuses on these high-temperature parts of the heat quickly and effectively transferred to the air, to maintain the normal operating temperature of the generator, generally in the tens of degrees Celsius to more than a hundred degrees Celsius range of cooling.

Its structure and working principle is mainly to enhance the heat exchange efficiency through heat exchanger tubes and fins, and to utilize fan-driven air flow through the heat exchanger parts to take away the heat. The temperature control range of this type of dry cooler is relatively narrow, mainly to meet the basic cooling needs of normal generator operation and avoid generator damage due to overheating.

Application Scenario of High and Low Temperature Integrated Dry Cooler

In some more complex small generator application scenarios, there will be high and low temperature integrated dry cooler.

For example, when the generator has auxiliary systems that generate relatively low-temperature heat in addition to the main high-temperature heat-generating components. These auxiliary systems may include the generator's control circuits, lubricating oil cooling system, etc.

The high and low temperature integrated dry cooler can be realized by partition design in this case. It can be internally divided into different heat transfer zones, with different heat transfer methods and parameters for high and low temperature heat sources. For high-temperature components, such as the windings of the generator, a combination of high-efficiency large-area heat exchanger tubes and fins is used to take away heat quickly by utilizing a larger air flow rate; for low-temperature heat sources, such as the control circuits, a relatively small heat exchanger area and a low air flow rate are used to avoid over-cooling.

The advantage of this high and low temperature integrated dry cooler is that it can more comprehensively deal with the heat generated by the generator and its ancillary systems, improving the thermal management efficiency of the entire power generation system. It can realize the control of heat in different temperature ranges through a unified device, reducing the footprint and complexity of the equipment. For small generator application scenarios with limited space, especially in the case of a generator supporting a small area, this compact design is very attractive.