Document PreviewA temperature controller for VAV air-handling units based on simplified physical modelsOpen with your PDF reader Euroclima controls for air handling units The Euroclima air handling unit range is available with factory mounted controls, including: The complete control panel, with disconnect switch contactors, overload protection, variable frequency invertors and programmable Controller The control peripherals such as temperature and humidity sensors, pressure switches, damper actuators, valves… The units are tested and pre commissioned at the factory, which result in high reliability, time saving and trouble free commissioning for our customers Factory designed, fitted & tested Easy and fast Installation Single source of responsibility close Info: Built in pre-programmed controllersAdd to my favorites Email to a friend Journal of Architectural Engineering 1076-04311 and 21Doctoral Student, Dept. of Civil, Architectural and Environmental Engineering, Univ. of Miami, Coral Gables, FL 33146 (corresponding author).

E-mail: k.phalak@umiami.edu2Assistant Professor, Dept. of Civil, Architectural and Environmental Engineering, Univ. of Miami, Coral Gables, FL 33146. E-mail: g.wang2@miami.eduAbstract: Ideally, minimum outdoor air and building static pressures are controlled through feedback controllers with the use of airflow and pressure sensors in air-handling units (AHUs). Unfortunately, because these sensors are not always installed in AHUs, it is common to maintain the minimum outdoor airflow by fixing the AHU control dampers at minimum positions and maintain the building static pressure by tracking the return fan speed with the supply fan speed. The purpose of this paper is to evaluate the system performance of these alternative controls. The outdoor airflow and building static pressure of an AHU is simulated using a nonlinear network solution. The simulation results show that the fixed damper position method can approximately maintain a constant outdoor airflow ratio with an appropriate damper connection if the building static pressure is perfectly controlled.

The return fan speed linear tracking method along with the fixed damper position method shows performance in maintaining the minimum outdoor airflow ratio and positive building static pressure that is better than that with the return fan speed proportional or offset tracking method./10.1061/(ASCE)AE.1943-5568.0000190Author keywords: Air conditioning, Control, Flow simulation, Ventilation© 2016 American Society of Civil Engineers. WK-com in N / S / H ATEX Highest Safety even in explosive Atmospher RLT-units placed in explosive atmosphere or delivering explosive air are subject to special requirements whic...more ... WK-com N / S / H V4A acid- and alkali-resistant, for offshore use as well. Some working environments for air handling units place much greater demands on surfaces that cannot be...more ... WK-com N / S / H Weatherproof WK-com ​​N / S / H Weatherproof up to 110 mm wall thickness, combined up to 200,000 m³/h. Our weatherproof air handling units of the series WK-com belong to the most silent...more ...

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