|
Flexible
hoses must be used on the coil inlet
and outlet and must have sufficient
fall to avoid the collection of condensate. |
|
To avoid the possibility
of steam hammer, the steam main should
be adequately trapped. |
|
To clear the line
of the very heavy condensate flow
produced on start-up by-pass valves
must be installed around the trap
on the coil outlet. |
|
Control valves
and pressure gauges should be positioned
near to the heat exchanger. |
|
Coil type boilers
should not be fitted at the bottom
of flasks or columns. They are designed
to be mounted on an external circulatory
loop, this ensures a rapid uni - directional
flows across the heating surfaces,
which improves the heat transfer performance
and promotes smooth operation. |
|
The steam pressure
should always be adequate enough to
ensure effective and smooth condensate
removal. This pressure will vary according
to conditions of use and size of heat
exchanger. For example, with the SHEB
12/12 and SHEB 450, a minimum pressure
of 2 bar.g will probably be required. |
|
On start-up, the
steam should be admitted positively
and progressively to the coil battery
to remove the condensate as it is
formed and with the by-pass valve
left open until a uniform flow of
condensate is being vented. |
