7 VENTILATION AND AIR CONDITIONING SYSTEMS

7.1 Ventilation Systems

Ventilation systems are provided in the turbine generator building, baghouse, control building, and other areas such as diesel generator set room, air conditioning plant room, demineralizer building and various pump houses.

7.2 Air conditioning Systems

Air conditioning is required in various areas in the main control rooms that house control equipment. Air conditioning is provided by individual air conditioning units.

The air duct system should be equipped with necessary fire damps which should be interlocked with fire alarming system. When fire taking place, the fire damps should be operated to shut off the air flowing, and the air conditioning units should be shut down at the same time. After put out a fire completely, the fire damps should be come back to original state and the air conditioning system should be take into operation manually. 

Office, classroom, test room and other necessary air conditioning room, should be conditioned by split air conditioner, The operation and installation should be depend upon the requirement of the manufactory. 

The electrical rooms should be equipped with ventilation system to keep the rooms of positive pressure so that the H2S would not retain in the rooms and the content of H2S in these rooms should be kept at an acceptable level, and the ventilation system should also be used to discharge heat generated by the electrical devices. 

Special protection has to be foreseen for electrical equipment with respect to H2S gas, which is usually found in the ambient air in geothermal power plant projects. The supply air to electrical switchgears, relay, computer and control rooms shall be treated (H2S filters)..The rooms requiring the supply of H2S free air shall be provided with special features, such as positive pressure with air tight doors etc. and monitored by H2S detectors accordingly.