The Science of Comfort

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What is System Effect?

Posted by Price Industries on September 10, 2019 at 9:47 AM
In duct design and installation, system effect is the generation of higher than expected pressure drops through changes in duct direction or geometry. It can also be caused by improper installation of  fittings, which result in excessive, unanticipated turbulence in the airflow. In short, system effect is the installed pressure drop which is different from the design pressure drop.
 

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Topics: System Effect, Static Pressure, Outlet Conditions, Pressure Drop, Velocity Profile, Inlet Conditions

What is Inlet Effect?

Posted by Price Industries on August 27, 2019 at 9:57 AM

Inlet Effects 

ASHRAE Standard 70 guidelines are in place so that ideal conditions are present during GRD testing
and to ensure the testing is repeatable. It is important to note that the performance
published in the Price catalog is based on these ideal conditions outlined in ASHRAE 70 and that
any field modifications can affect the performance of the outlet. There are five common field conditions and their influence on the air pattern of a given diffuser:
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Topics: GRD, Diffusers, ASHRAE 70, Inlet Effect, Grilles

Low Temperature Air Distribution

Posted by Price Industries on August 13, 2019 at 8:59 AM

Low temperature overhead air distribution (also called cold air distribution) supplies cooling air to the occupied space with an entering air temperature typically between 40°F and 50°F [4.4 and 10°C]. This contrasts to the “typical or conventional” overhead air distribution cooling supply air temperature between 50°F and 59°F [10 and 15°C].

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Topics: GRD, Beams, Cooling Coil, Psychrometrics, Low Temperature

Prevent Condensation from Becoming a Design Flaw

Posted by Price Industries on July 30, 2019 at 8:32 AM
 
Water condensation is easily the most common concern when discussing chilled beams and cooling panels. This concern comes from the personal experience many have had of seeing water droplets form on the surface of piping such as a water coil.
 
Cooling coil with condensation
 
Figure 1: Water droplets form on the surface of piping of a water coil

 

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Topics: Beams, Cooling Coil, Condensate, Psychrometrics, Low Temperature

Induction in Chilled Beams and Diffusers

Posted by Price Industries on July 16, 2019 at 9:18 AM

ACTIVE CHILLED BEAMS

In a chilled beam, the term “induction” is used to describe the process of injecting primary air under pressure through a nozzle, which in turn entrains return or plenum air at the discharge of the nozzle.

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Topics: Diffusers, Beams, System Efficiency, Induction, Heat Transfer

At Price, when we say “the sky is the limit”, we actually mean it.

Our customers have come to count on a consistent and ever-increasing stream of new products and enhancements.  Price has a large team of experienced and talented engineers who are consistently working on breakthrough ideas.  We are not afraid to move into whole new product categories if we believe we have a contribution to make.

  • Research & Innovation
  • Technical Tours
  • Training Classes
  • Targeted Discussions
  • Mock-up Testing
  • Custom Solutions & Specials
  • Custom Finishes
  • Computational Fluid Dynamics
  • Virtual Reality

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