城市内重要楼宇的应急自备电源多采用柴油发电机组解决。由于市区内用地紧,建筑物底层(第一层)商用价值高,不少发电机组设在地下一层,有的甚至地下二层。对于设在地下层的机房更要注意发电机组选型、设备搬运、排烟、消声、进风、排热等问题。 The emergency self-contained power supply in important buildings in the city is mostly solved by diesel generator sets. Due to the tight land use in the urban area, the commercial value of the building’s ground floor (first floor) is high. Many generator sets are located on the basement floor, and some are even underground. For the equipment room located in the basement, attention must be paid to the selection of the generator set, equipment handling, smoke extraction, noise elimination, air intake, and heat exhaustion.