FAN COIL UNIT GROUP

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NEW - CIBSE Journal article November 2016
"COMPARISON OF FAN COIL UNITS AND CHILLED CEILINGS"

In this cost model, covering mechanical and electrical installations, Aecom's specialist MEP cost managers examine the capital cost of fan coil units and chilled ceiling installations to a CAT A office within central London, to a single floor plate covering 1,600m2 net internal area.  Download CIBSE 2-page article

NEW - HEVAC position statement on SFP for fan coil units

Specific Fan Power of Fan Coil Units has recently become a very significant number within project specifications.  This FCU Group position statement sets out the current thinking (December 2014).

NEW - A Comparative Study of Active Chilled Beam and Fan Coil Unit Energy Consumption

Following a previous study where fan-coil units (FCU) and active chilled beams (ACB) were compared under different operating conditions, the HEVAC Fan Coil Unit Group in FETA commissioned EDSL to compare their relative energy consumption under the same operating conditions.  For the results and the report ............
 

There is an article on the study in the Sept 14 CIBSE Journal - link is http://portfolio.cpl.co.uk/CIBSE/201409/special-fan-coil-units-efficiency/

A PDF of the article is available from here, but the above link is better resolution.

The aim of the HEVAC Fan Coil Unit Group is:

To promote the effective use of Chilled Water Fan Coil Units within a buildings environmental system by supplying meaningful and definitive specifications from which engineers can make considered decisions.

Why use Fan Coil Units?

The FCU Group has produced a short leaflet to bring to your attention the many advantages of fan coil unit systems, which are summarised and compared with the attributes of alternative systems.
(Download).

Acoustic guideFigure 2.1 from CIBSE Fan Coil Unit Guide

In November 2009 the Fan Coil Unit Group produced a good practice guide to acoustics for fan coils. Containing case studies and worked examples of installations it gives advice on system components, the effect they can have, and the associated pitfalls that can occur, especially in relation to small scale projects.
(Download)

Achievement of Aim

  • Supplying Industry Standards for Testing of:
    • Sound
    • Thermal
    • Performance
    • Airflow
    • Coefficient of performance
    • Airside carryover / losses
    • Component Efficiency

Figure 3.3 from CIBSE Fan Coil Unit Guide

  • Provide Industry Guides on
    • Application of Fan Coils Units
    • Installation of Fan Coils Units
    • Maintenance of Fan Coils Units
  • Act as a partner to Government departments to define any future standards specifications
  • Provide Statistics to members of the Group to facilitate focused product development strategies
  • The promotion of Fan Coils Units as one of the most effective air conditioning options

Links to useful Industry guides

BSRIA BG 29/2011 Pre-Commission Cleaning of Pipework Systems

BSRIA BG 2/2010 Commissioning Water Systems

CIBSE Commissioning Code W:2010 Water Distribution Systems

Do FCU comply with the new Part L Building Regulations?

Yes they do. Members worked closely with the DCLG when they developed the new Part L in 2006 and they all supply fan coil units that comply with the regulations.

Some end users have had difficulty in understanding the requirements for Specific Fan Power (SFP) under the new Part L. To help, the FCU Group had prepared the following position statements:

  HEVAC position statement on SFP for fan coil unitsv1.pdf - 1 Dec 2014

  HEVAC position statement on Acoustic Design Principles Iss2.pdf

  HEVAC position statement on Airflow Commissioning Iss2.pdf

  HEVAC position statement on Entering Air Temp Iss2.pdf

  HEVAC position statement on Specific Fan Power Iss3.pdf

CIBSE TM43 - Fan Coil Units

This Technical Memorandum, which at Ecobuild in March 2011 was described by CIBSE as one of their "Best Sellers", sets out to describe all aspects of fan coil unit technology and provides manufacturers, designers, site personnel and operators a comprehensive guide. Please link to the CIBSE page where you can get this publication.
www.cibse.org/knowledge/cibse-tm/tm43-fan-coil-units