Should natural convection be a consideration?
> I am not aware of a normal practice for the entry points.
> The major factors driving the connection point are, from my
perspective:
> *minimum bends/section changes
> *serviceability of valves, expansion joints etc
> *arrangements to collect surface condensation
> *location of header
> *minimisation of system volume and surface area
>
> If you are using chillers with low pressure circulation Ch-W pumps
(i.e
> additional higher pressure zone distribution pumps to deliver cooling
to the
> users) it will pay to take some care in the suction and discharge
header
> arrangements so each chiller sees an equal pressure drop. Failure to
do this
> can cause difficulties in load balancing - the chiller with the lowest
> pressure drop will get the highest flow and will try to do most of the
work.
>
> Cheers
>
> Steve
>
>
> -----Original Message-----
> From: cs_ang [mailto:csang88@pd.jaring.my]
> Sent: Wednesday, January 28, 2004 3:23 PM
> To: <a href="/group/PipingDesign/post?postID=6t-U-WVdcl-13rNUHPw7tjgmGqqTuG7lGwl_nd28Bel6Um5MsjxyZxv1gl5YmIYhSLEUYtp0FEkA51G4Gk5aCvsGGC8">PipingDesign@yahoogroups.com</a>
> Subject: [PipingDesign] Chilled Water Supply Header Connection
>
>
> I am working on a project which involve installation of a central
> chilled water plant. There are 3 nos water chillers each of 750RT to
> be connected in parrallel to a supply pipe header. My question is
> what is the normal pratice to connect the chiller (chilled water)
> outlet pipes to the header:-
> 1) At the bottom of main header or
> 2) At the side of main header or
> 3) At the top of main header
> and why.
> Regards,
> CSAng
Received on Tue Jan 27 23:32:00 2004
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