GRD Theory
This type of air distribution system is best suited to provide consistent conditions throughout the entire space.
What is a Mixing System?
This phenomenon occurs when dirt from the room side is entrained next to the diffuser.
What is smudging?
This design feature for an airflow measurement device is best known for being able to mitigate the impact of poor inlet conditions.
What is a center averaging cross-flow sensor?
This factory installed and leak tested accessory can save hours of labor on the jobsite and greatly increase project dollar value.
What is a valve package?
This action is the single most important way to prevent the spread of COVID-19.
What is washing your hands?
Ceiling mounted diffusers use "this" to help supply air cling to the ceiling and increase throw values.
What is Coanda Effect?
A more complex outlet that discharges supply air in various directions and planes.
What is a diffuser?
This terminal unit standard specifies instrumentation, test configuration, and measuring procedures for air terminal units.
What is ASHRAE Standard 130?
The flipping of this accessory, when attached to Price Industries products like the SDV or FDC, is now allowable by ETL/UL.
What is an electric coil?
This is the largest air distribution company in North America.
Who is Price Industries?
A 10% increase in throw for a horizontal air pattern would suggest this temperature differential.
What is 10°F heating?
This set up is required by ASHRAE Standard 70 to ensure standardized inlet conditions are met during testing.
What is 3 equivalent straight duct diameters?
This type of HVAC system operates on the core belief that only the minimum amount of fresh air required for ventilation and latent cooling requirements should be conditioned.
What is a Dedicated Outdoor Air System (DOAS)?
This silent type of electric coil control allows for heat to be modulated based on discharge temperature resulting in greater control over leaving air temperature.
What is an SCR-DAT?
This National League baseball team, now located in the southeast, was a Boston team until the 1950s
Who are the Atlanta Braves?
This is a stream velocity contour line or balloon showing diffuser throw to a common terminal velocity.
What is Isovel?
This material is best suited for Chlorinated Natatorium (Swimming pool) Applications.
What is Aluminum?
This type of sound, certified by AHRI 880, is the hardest to treat in the field for fan powered units.
What is radiated sound?
When close-coupled to a Price Industries terminal units, this accessory is certified by AHRI 880 rather than ASTM E 477.
What is a silencer?
Chosen because of its association with dominance and chivalry as well as purity and innocence in Celtic mythology, this creature is the official National animal of Scotland.
What is a Unicorn?
In a wide ranging, comprehensive study, this percentage of buildings achieved a comfort level of 80% or more.
What is 11%?
This is a typical method of selecting for optimum comfort using the throw values of GRD products.
What is Mapping?
Recent ASHRAE studies indicate this velocity pressure is associated with absolute minimum airflow measurement in the terminal unit industry. This application requires ideal inlet conditions, low inlet static pressures, and high accuracy VAV controllers.
What is 0.004” W.G.?
When faced with low entering water temperatures for single duct units, this water coil option can be utilized to increase capacity while decreasing air pressure drop.
What is an oversized casing (HSG option)?
(National Day of Unplugging) Coined during a 2010 study by the UK Post Office, this phobia describes people who become anxious when they lose their mobile phone, run out of battery, or have no network coverage.
What is nomophobia?