Reported By: Ir Keith WP YUE
An inspiring seminar “Retro-Commissioning
on Chiller Plant” was presented by Ir Victor LEUNG on 15 October 2019. Ir Victor LEUNG is an experience specialist
in HVAC system and is enthusiastic in application of automatic control and
retro-commissioning to improve building energy efficiency. It was more than
full house attended by over 110 participants.
In the Seminar, Ir LEUNG briefed the scope,
objective, cause and benefit of retro-commissioning. He outlined that
significant energy savings can be contributed by carefully operating chiller
plant equipment at their optimum operating conditions. He then gave on in-depth analysis on energy
saving benefit by optimizing operating parameters such as chilled/condensing
water supply/return temperature difference, VSD cooling tower approach
temperature and chilled water supply pressure etc.
He also elaborated that the correct type
and installed location of control valves, sensors and flow meters will affect
effectiveness of automatic demand control.
He highlighted the improved energy saving opportunities of chiller plant
operating at various periods and seasons. A case study with assessment of
operating efficiency for a variable speed chiller plant was introduced and
daily variation of chiller plant energy efficiency was reduced after
retro-commissioning process despite increased daily cooling variation during summer
that indicated increased effectiveness of chiller plant automatic control to
maximize operating energy efficiency.
A question-and-answer session was conducted
after the presentation, and participants were impressed by the insights brought
by Ir LEUNG.
On behalf of the HKIE BSD and participants,
Ir Keith YUE presented a certificate of appreciation to Ir LEUNG for his
support and presentation that make the seminar very successful.