4.6 Liquid-Cooled Models

The three most common liquid cooling systems used for generator sets are unit-mounted radiator, city water, and remote radiator cooling. Since each involves somewhat different installation considerations, they will be discussed separately.

4.7 Unit-Mounted Radiator Cooling

This is the most common cooling system used for engine-driven generator sets 20 kW and larger. The major system components are an engine-driven fan and circulating water pump, a radiator, and a thermostat. The pump circulates water through the engine until it reaches operating temperature. Then the engine thermostat opens and allows circulation through the radiator. It can also close, restricting the flow as necessary to prevent overcooling. The fan blows air from the engine side of the radiator across the cooling surface as shown in Figure 4-8.

Cooling air flow can be reversed by using a suction fan, but this is generally not recommended because it may interfere with generator cooling air flow, which moves in the same direction as the engine’s standard pusher fan. Also, a suction fan would result in higher temperature combustion air being drawn into the air cleaner, reducing the maximum engine power available.

Whenever a generator set is installed inside a building or enclosure, the radiator air should be ducted outside the room or enclosure. A typical arrangement is shown in Figure 4-8. Ductwork should be as short, straight, and unobstructed as possible. Static pressure restrictions of more than 1/2 inch (1.3 cm) water column on the radiator outlet or inlet air will reduce air flow to the point of limiting maximum power and/or ambient temperature that causes overheating.

 

 

 

9

 

7

 

 

 

 

8

 

 

12

 

 

 

 

11

 

 

 

10

 

7.

Self-supporting duct work

10.

Pusher fan

8.

Air out

11.

Flexible section

9.

Air inlet opening

12.

Support legs

Figure 4-8 Radiator-Cooled Generator Set Installation

16 Section 4 Air Requirements

TP-5700 7/93

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Kohler 20--2800 kW manual Liquid-Cooled Models, Unit-Mounted Radiator Cooling
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20--2800 kW specifications

The Kohler 20-2800 kW generator series is renowned for its exceptional performance and reliability, making it a prime choice for various industrial and commercial applications. Designed for continuous and backup power generation, these generators are capable of providing robust energy solutions for facilities that demand high capacity and efficiency.

One of the standout features of the Kohler 20-2800 kW series is its advanced technology integration. Kohler utilizes the latest in digital control systems, ensuring precise monitoring and management of generator functions. The generator's control panel provides real-time data on power output, fuel consumption, and operating conditions, allowing operators to make informed decisions quickly.

In terms of fuel efficiency, the Kohler generators are engineered to minimize operational costs while maximizing performance. The series includes options for both diesel and natural gas, offering flexibility depending on user requirements and availability. The efficient fuel consumption not only supports cost savings but also aligns with environmental standards, reducing emissions during operation.

Durability and reliability are key characteristics of this generator series. Kohler buildings are constructed using high-quality materials and components that withstand harsh environmental conditions. System redundancy features and robust cooling systems ensure that the generators can operate continuously without failure, making them ideal for critical power needs.

The Kohler 20-2800 kW series also includes noise-reducing technology, making them suitable for installations in noise-sensitive environments. With options for acoustic enclosures, these generators comply with local noise regulations while delivering powerful performance.

Safety features are integrated into the generator design, including automatic shutdown systems for over-speed, low oil pressure, and high water temperature, ensuring that the equipment operates safely during emergencies.

The modular design of the Kohler 20-2800 kW allows for easy installation and maintenance. Access points for service and diagnostics are strategically placed for convenience, reducing downtime and improving efficiency in upkeep.

Overall, the Kohler 20-2800 kW generator series stands out as a dependable powerhouse, combining advanced technology, fuel efficiency, durability, and safety features to meet the demands of various industries. Whether for data centers, manufacturing facilities, or large commercial buildings, Kohler's commitment to quality and innovation makes these generators an exemplary choice for reliable power generation.
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