Construction drawing of exhaust ventilation of generator room

How should a generator be ventilated?

Preferably, the source of ventilation air should be as low as possible and the air should flow over the entire generator set, thereby cooling the alternator, engine block, and radiator (for sets with unit-mounted radiators) to remove the after-cooler and jacket-water heat.

What is engine room ventilation?

This guide addresses engine room ventilation considerations that apply to the successful installation, operation and maintenance of Cat engines, generator sets, compressor units, and other packaged units. The primary aspects of a properly designed engine room ventilation system are cooling air and combustion air.

How do you design a generator room?

The ventilation system and overall layout of a generator room should be examined in detail during the design process. While a generator set is specified by the electrical engineer, the onus is on the mechanical engineer for an optimum design that maximizes the performance, longevity, and reliability of the genset.

How is natural draft ventilation blocked in an engine room?

Natural draft ventilation is almost completely blocked by roofs, SCR house, tool room, and vertical discharge radiators. Warm weather operation may result in unacceptable engine and generator temperatures. Figure 18 shows an engine room designed to provide a combination of ventilation and engine/generator air inlet ducting.

Where should exhaust air be sourced for a generator?

For generators with remote radiators, it is recommended that the exhaust air should be sourced as high as possible and directly above the generator sets. Significant bypass of ventilation airflow directly into the discharge airflow will lead to reduction in cooling effectiveness and elevated temperatures within the room.

What are the design parameters of a generator?

Generator-room temperature, ventilation airflow, ventilation air cleanliness, and air movement are critical design parameters that must be analyzed during the design process to ensure optimal and reliable operation of the generator set. It is critical that an adequate amount of ventilation airflow be delivered to the generator room.