- Effect of room modelling and sensor position on performance assessment of variable air volume control systems. Riederer, P; Dexter, AL // Building Services Engineering Research & Technology;Feb2003, Vol. 24 Issue 1, p9
Variable air volume (VAV) systems are commonly used for air conditioning in buildings. The testing of different control strategies and controllers for this application has been a main concern in several simulation studies. In these simulations much attention has been paid to the accuracy of the...
- Contaminant Transport and Filtration Issues with DOAS. Mumma, Stanley A. // ASHRAE Transactions;2009, Vol. 115 Issue 2, p350
Dedicated outdoor air systems (DOAS) are often thought to be inferior to all air systems when contaminant flushing rates from occupied spaces are considered. This is a particularly prevalent attitude when the parallel terminal sensible cooling equipment provides no, or minimal, filtration of...
- Dynamic Model-Based Fault Tolerant Control of Variable Air Volume Air Conditioning System. Talukdar, Atanu; Patra, Amit // HVAC&R Research;Mar2010, Vol. 16 Issue 2, p233
A dynamic model-based fault tolerant control of a variable air volume air conditioning system is developed. State space model of the variable air volume air conditioning system is used to detect, isolate, and estimate stuck faults of the damper vanes of the air handling unit (AHU). Fault...
- the third choice? // Air Conditioning Heating & Refrigeration News;6/9/2008, Vol. 234 Issue 6, p25
The article offers information on various air distribution systems used in buildings. It states that the overhead variable air volume system produces uniform temperatures throughout the space, as it induces mixing of space air with supply air. It mentions that in the displacement ventilation,...
- VAVs at Low Loads. // Consulting-Specifying Engineer;Oct2006, Vol. 40 Issue 4, p48
The article discusses the functioning and capability of variable-air-volume (VAV) systems to deliver the appropriate quantities of conditioned air. Usually, the air distribution system in large buildings operates only partially which reduces the efficiency of VAV systems because its components...
- VAV Sensors & Ductwork: Placement And Pitfalls. Klaczek, Wayne; Ackerman, Mark // Engineered Systems;Feb2006, Vol. 23 Issue 2, p54
The article examines the various problematic conditions which may be encountered when installing sensors and ductwork for variable air volume (VAV) air conditioning systems. Situations when there is a loss of VAV flow sensor amplification, uniformity and accuracy, are described. Tips for VAV...
- New Approach to Energy Savings For Rooftop AC. Westphalen, Detlef // ASHRAE Journal;Mar2004, Vol. 46 Issue 3, p38
Introduces several best design options for energy efficiency and latent capacity. Establishment of an integrated part load value (IPLV); Efficiency of the design options; Use of a new reverse-variable air volume (VAV) approach for system control.
- 2011 ASHRAE Journal Indices. // ASHRAE Journal;Dec2011, Vol. 53 Issue 12, p130
The article lists articles of the periodical including "Liquid Refrigerant Pumping in Industrial Refrigeration Systems," by Todd B. Jekel, "Advanced Air Distribution," by Arsen K. Melikov and "High-Performance VAV Systems," by John Murphy.
- Variable air volume's the best. Winston, Sherie // ENR: Engineering News-Record;11/04/96, Vol. 237 Issue 19, p17
Reports on the US Environmental Protection Agency's (EPA) approval of variable air volume (VAV) systems in maintaining air quality in large office buildings. Results of the preliminary study conducted to determine air quality maintenance; Economy of using VAV.