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Computer based management systems are now widely used to monitor and control power and building services plant remotely. As the demand for such systems increases in a company so serious problems in managing the management systems are likely to result unless an integrated approach is taken at the outset. This paper describes how the concept of an integrated power and building services management system...
Medium and large local digital telephone exchanges have a typical power density of 230 W/sqm of gross floor area rising to 400 W/sqm in some areas of the exchange. Individual racks within an exchange may have heat dissipations equivalent to 1 or 2 kW or more. As future exchanges become physically smaller, rack consumption and power densities will increase. A number of thermal management options are...