The selection and performance data contained in the Titus catalog are the result of extensive studies conducted in the Titus engineering laboratories under professional engineering guidance, with adherence to sound engineering applications. The data has been obtained in accordance with the principles outlined within the American Society of Heating, Refrigerating and Air Conditioning Engineers (ASHRAE) Standard 70, Standard 113, Standard 130 and AHRI 880. The recommended methods for applying this information has been shown by field experience to result in optimum space air distribution.
Grilles & Diffusers
The Engineering Guidelines for Grilles & Diffusers discusses the basic principles of air distribution, selection and comfort.
The Engineering Guidelines for Terminal Units discusses the types of terminals, types of controls, fan powered terminals, ECM motors, and sizing of terminals.
The Engineering Guidelines for Acoustics discusses sound power, sound pressure, and ARI 885 standard for estimating sound in an occupied space.
The Engineering Guidelines for Fan Coils discusses the types of fan coils, heat transfer, hydronic systems, room load calculations, psychrometrics, properties of coils and coil design, vertical stack risers, controls and valve packages and thermostats.
Buildings come in all shapes and sizes and are designed for any number of purposes. In order to create healthy and productive environments, air distribution systems must be selected that best meet the goals of designers. There are a wide range of choices available, but often one system can be identified as the best solution in terms of cost, comfort and energy. The purpose of this guide is to explain how displacement ventilation works, describe recommended applications and provide engineering guidance to the system designer.
UnderFloor Air Distribution
UFAD systems utilize the space under an access floor as an air plenum. Properly designed UFAD systems take advantage of thermal stratification. ASHRAE recommends that, for comfort, the temperature in the occupied zone be between 73 degrees and 77 degrees F, relative humidity be between 25 - 60%, and the maximum velocity in occupied zone be 50 fpm in cooling or 30 fpm in heating. The key to successful underfloor systems is the ability of the underfloor diffuser to rapidly mix room air into the supply air at low velocities.
Chilled Beams are designed to provide energy savings, excellent comfort and operate with minimal noise. When used with dedicated outdoor air systems (DOAS) and a dedicated Chilled Beam chiller, chilled beam systems can realize energy savings of 15-20%. An additional 20-25% savings can be realized from downsized ventilation systems due to the high efficiency of the water system for the sensible load.