MEICA systems

摘要

J. Murphy ft Sons engaged Donaldson Associates to provide the construction design for the cable tunnel. Donaldson Associates appointed Mechanical (ft) Electrical Associates (UK), to provide the detailed design support for the MEICA systems. Tunnel ventilation is required to remove heat generated by the power distribution circuits within the tunnel and provides a variable airflow depending upon the circuit heat-gain and ambient temperature. The design is a two-fan system for duty-stand-by operation as well as duty-assist operation: fan variable speed drives are provided. As an energy saving measure, by-pass dampers are included to facilitate natural airflow when ambient and operating conditions permit.