| Thermal VAV Diffusers |
| Configurations |
| Features |
| Analog VAV DIffusers |
| Non-VAV Diffusers |
| VSR Recessed Hi-Rise |
| VSRM Recessed Hi-Rise Remote Master |
| VSRS Recessed Hi-Rise Remote Slave |
| VSM/VSS Recessed Master/Slave |
| VS Sound Power |
| AeroBalde Supply Grilles |
| AreoBalde Return Grilles |
| AreoBlade Options and Accessories |
| VAV Diffusers |
| Single/Dual Duct Terminals |
| Fan Powered Terminals |
| Terminals Unit Accessories |
| VAV Retrofit Terminals |
| Miscellaneous Terminals |
| Verticle Stack Series |
| Horizontal Basic Series |
| Vertical Basic Series |
| Horizontal High Output Series |
| Vertical High Output Series |
| Accessories |
| Horizontal Air Handler Belt Drive |
| Vertical Air Handler Belt Drive |
| Modular Air Handler Belt Drive |
| Rooftop Air Handler Belt Drive |
| HAB |
| VAB |
| MAB |
| RAB |
| AeroBalde Grilles |
| 300/350 Grilles |
| Specialized Grilles |
| Security Grilles |
| Security Products |
| GRD Accessories |
| FlowBar Diffusers |
| Critical Environment Diffusers |
| Access Floor Air Distribution |
| Linear Slot Ceiling Diffusers |
| Linear Slot Ceiling Plenums |
| Linear Bar Diffusers |
| Linear Louver Diffusers |
| Round Ceiling Diffusers |
| Perforated Ceiling Diffusers |
| Square Ceiling Diffusers |
| Rectangular Ceiling Diffusers |
| Nozzle & Specialty Diffusers |
| Concentric S / R Diffusers |
| TurboFuser |
| Fire Rated Diffusers |
| Grilles and Diffusers |
| Terminal, Controls |
| Fan Coils |
| Acoustical Aps |
| References |
| Glossary |
| Basic Principles of Air Distribution |
| Outlet Location and Selection |
Isothermal Air Jets |
| Supply Outlet Classifications |
| Perimeter Applications |
| ADPI-Air Diffusion Performance |
| Industrial Applications |
|
Other Grilles and Diffusers |
| Types of Terminals |
| Types of Controls |
Isothermal Air Jets |
| Control Operation in Terminals |
| Operation of a Velocity Controller |
| Fan Terminal Flow Control |
| Fan Speed Control |
|
ECM Motors - Fan Powered |
| Direct Digital Control |
| Sizing Basic Teriminals from Capacity Tables |
| Typical Problems |
|
Some Basic Concepts |
| The Fan Law |
| Equations and Definitions |
| Types of Fan Coils |
| Heat Transfer |
Room Load Calculations |
| Psychometrics |
| Properties of Coils and Coils Design |
| Vertical Stack Risers |
| Controls and Value Packages |
| Modulinear - Aluminum |
| Modulinear Narrow Tee - Aluminum |
| Modulinear Diffuser Plenums - Steel |
 |
 |
 |
 |
 |
 |
 |
 |
 |
Interactive NC / RC Graph
Enter sound pressure data for the 1st (63 Hz) through 8th (8000 Hz) octave bands. If you do not have data for the 1st and 8th octave band, enter a zero (0). Zeros in the 2nd through 7th octave bands will be used in the NC and RC graphs.
If you have Catalog Sound Power data, you must subtract the ARI 885-98 attenuation factors from the sound power data to determine the estimated room sound pressure data to graph.
The table below shows the ARI 995-98 attenuation factors for radiated and discharge sound used in the Titus catalog.
|
Octave Bands
|
||||||
| 2 | 3 | 4 | 5 | 6 | 7 | |
| Radiated Sound | 18 | 19 | 20 | 26 | 31 | 36 |
| Discharge Sound < 300cfm | 25 | 28 | 39 | 53 | 59 | 40 |
| Discharge Sound 300 - 700cfm | 27 | 29 | 40 | 51 | 54 | 39 |
| Discharge Sound > 700cfm | 29 | 31 | 41 | 51 | 52 | 39 |
The NC / RC Graph is based on ARI 885-98.
To calculate room sound pressure from catalog sound power data, enter the catalog radiated or discharge sound power for the 2nd through 7th octave bands and click "Calculate Radiated Room Sound Pressure" or "Calculate Discharge Room Sound Pressure".
For Discharge Room Sound Pressure, the calculator uses the ARI 885-98 discharge sound attenuation factors for airflow > 700 cfm (shown above). NC values for lower cfm's will vary slightly.
|
|
 |
|
 |
|
| Titus is located at: 990 Security Row Richardson, TX 75081 Telephone: +1 972 699 1030 FAX: +1 972 918 8880 Click Here For A Map For answers to any and all product, application, installation, and other product related questions, please contact your local representative. titus@titus-hvac.com |
|
|
|
| ISO (International Organization for Standardization) Titus is a recognized leader in the air distribution segment of the commercial HVAC industry. Titus products can be found in numerous prestigious projects worldwide, including the Guggenheim Museum in Spain, the Bank of China in Beijing and the International Space Station. |
