S   LUTIONS

Welcome to   S    LUTIONS, a monthly newsletter provided by Jacco & Associates. Jacco’s focus on system knowledge provides you with the engineering support and product solutions for your applications.

Question:    Per ASHRAE, what is the max accepted air velocity over the body in an unaffected neutral environment?

                   a.) 75fpm        b.) 60fpm       c.) 50fpm       d.) 40fpm

Prize:         $50 Golf Galaxy Gift Card!

Respond by July 14^th with the correct answer to be entered in the raffle for this month’s prize!

Question:  Which is the most consistent and cost effective form of reactivation air to achieve a 45°F Dewpoint?      

Answer:    d.) Condenser.  Congratulations to Joe Denk for winning a $100 Cedar Point Gift Certificate!

 61 Milford Dr.  Hudson, OH  44236  Phone:(330) 463-0100  Fax:(330) 463-0101

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Questions or comments? E-mail us at opportunity@jacco.com

Active And Passive Chilled Beams

A Passive Chilled Beam consists of a coil enclosed in a sheet metal casing.  Chilled or hot water is provided to the coil, and the air is distributed naturally into the space by changes in density from air passing through the coil.  Please see Figure 1.  There are no fans    incorporated in Passive Chilled Beams, requiring more free space around the coil to    provide adequate induction of air.  Due to this design ventilation air in Passive Chilled Beam systems will need to be distributed to the room directly through diffusers in the   ceiling or via an Underfloor Air Distribution system.

 

Active Chilled Beams have the ventilation air introduced directly into the unit itself.  This will induce room air into the beam and through the heating and cooling coils.  Please see Figure 2.  This allows for less free area required around the Chilled Beam, and the       capability to design into the system airflow velocities to accommodate various room     conditions and applications.  Since the ventilation air is introduced directly through the beam itself separate distribution is not required. 

 

Although the term Chilled Beam insinuates a specific look about the system, this is far from the truth.  The design is extremely versatile and can be applied in many different  scenarios.  Architects can choose to have them exposed, placed in drop ceilings, or    plaster ceilings.  They are available in any custom color, and can be incorporated into other building elements such as light fixtures and sprinklers. 

Active Chilled Beams are also available in a floor mounted cabinet style, perfect for renovations!

For more information request an educational seminar from your Jacco salesperson or download a free Chilled Beam Design Guide at:

 

www.jacco.com/engtools.php