Air-Cooled Heat Exchangers and Cooling Towers: Thermal-Flow by Detlev Kroger

By Detlev Kroger

This new textual content represents the main particular and finished e-book proposing glossy perform and thought proper to the thermal-flow functionality evaluate, layout, and optimization of air-cooled warmth exchangers and cooling towers. He additionally presents sleek analytical and empirical instruments used to guage the thermal-flow functionality and layout of air-cooled warmth exchangers and cooling towers. Kroger covers the right way to arrange enhanced standards and assessment extra severe bids with admire to thermal functionality of recent cooling platforms. extra, Kroger explores development percentages with appreciate to retrofits of present cooling devices in addition to attainable affects of plant operations and environmental impacts.

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Extra resources for Air-Cooled Heat Exchangers and Cooling Towers: Thermal-Flow Performance Evaluation and Design, Vol. 1

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The system, which rejects 558 MW, consists of a concrete cooling tower with a base diameter of 70 m and a height of 45 m. 12, water flows through the dry elements in one pass from the bottom to the top prior to being distributed through the wet section—a conventional type. The airflow arrangement is parallel with dry air blown horizontally into the wet airstream emerging from the next section. In order to mix the two airstreams, channels of different lengths are provided for the dry air. qxd 2/12/04 8:33 AM Page 40 AIR-COOLED HEAT EXCHANGERS AND COOLING TOWERS Fig.

Qxd 2/12/04 8:33 AM Page 16 AIR-COOLED HEAT EXCHANGERS AND COOLING TOWERS There are two basic types of air-cooled or dry-cooling systems that find application in power plants. In the direct system, also referred to as the GEA System, the turbine exhaust steam is piped directly to the air-cooled finned tube condenser (Fig. 6). The finned tubes are arranged in the form of an A-frame or delta to reduce the required land area. The steam exhaust pipe has a large diameter and is required to be as short as possible to minimize pressure losses.

15 were later considered with a view to reducing the sensitivity to wind. Fig. 15 Heat Exchanger Bundle Arrangements The cooling tower erected at the Grootvlei power plant in the Republic of South Africa in 1971 has its heat exchanger deltas installed horizontally at two different levels in the inlet cross section of the tower (Fig. 15b). The heat transfer surface in the Grootvlei tower (Grootvlei 5) consists of galvanized steel tubes onto which an aluminum fin is tension wound (Fig. 14b). Regularly spaced zinc collars prevent fins from unwinding.

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