Mechanical Design Principles
Summary
Every station, shaft and portal on a railway is different.
There is no one place where the needs, aspirations, design criteria and all the dos and don’ts are captured. This report attempts to do that and could be adapted to any railway project.
The report clarifies the minimum performance requirements for the design criteria, including temperature range and ventilation, for each room type and any particular system requirements. It describes the options and discusses their merits.
With an agreed set of minimum performance requirements every opportunity exists to:
– Drive out unnecessary complexity of installation.
– Drive out unnecessary complexity of operation.
– Gain more consistency of design and application.
– Reduce capital and operational expenditure
This paper could be adapted for any future railway projects where similar room types and systems are to be designed.
These principles should accompany a set of Mechanical Design Criteria.
The design of heating, ventilating and cooling of rooms should be as simple as possible.
The following order of priority should be adhered to by designers when considering the systems to suit their specific railway facility when providing ventilation, heating and cooling:
– Natural ventilation for fresh air and cooling.
– Mechanical ventilation for fresh air and cooling.
– Heating
– Mechanical By:
a. Central air system
b. Refrigerant based system
c. Chilled water system