Tham khảo tài liệu 'general electric generating plants part 8', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | MIL-HDBK-1003 11 Single-Level Diesel-Electric Generating Plant Layout. The single-story slab-on-grade layout is the usual design for smaller electric-generating plants 1 000 kW capacity and smaller . This layout may also be used for larger capacity generating plants where special conditions dictate the use of a single-level installation. All auxiliaries and support facilities are located on the same level. Single level construction requires more floor area. Trenches must be constructed in the slab for major piping runs. Such trenches become awkward for larger generating capacity plants with several units installed in parallel. Engine-generator sets are usually set on separate foundation blocks and are isolated from the floor slab. Some smaller skid mounted units may be set on isolators and bolted to floor slabs. Two-Level Diesel-Electric Generating Plant Layout. Two-level installations consist of an upper level engine operating floor and a lower level for major auxiliaries. This type of layout is most applicable to larger units installed in parallel. Such plants require less site are than do single level plants and the operating floor is kept relatively clear of obstructions. Two-Level Plant with a Basement. The operating floor is at ground level and major auxiliaries are installed in a below-grade basement area. Gratings are usually provided along sides and at the front of the engines to aid in ventilation and to provide access for maintenance of the units and the lower level auxiliaries. Two-Level Plant with a First Floor at Grade. The layout is basically the same as the two-level plant with a basement. The only major exception is that offices and support facilities are normally located in the second raised level. The two-story arrangement has some advantages over other layouts in lighting and in ventilating features. A significant advantages in avoiding the dangers of flooding which prevail in basement type installations located in wet .
