TITLE

Developing and Validation of HVAC System Fan Model Based on Numerical Analysis

AUTHOR(S)
Nassif, Nabil; Tesiero, Raymond C.; Singh, Harmohindar
PUB. DATE
January 2013
SOURCE
ASHRAE Transactions;2013, Vol. 119 Issue 1, Special section p1
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A large portion of energy use in buildings is attributed to air movement devices.. Accurate estimation of fan performance is a key element in maximizing fan efficiency. This paper proposes a new fan model that can be used in several applications such as optimization and fault detection, and can also be incorporated into any commercial building models. The model uses a numerical analysis based on an interpolation technique for the data generated by basic fan laws. It can use any two variables among all four variables of airflow rate, total fan pressure, speed, and power as inputs or outputs. Another advantage of this model is the flexibility of using any size of data for calibration, obtained either from manufacturers or field measured data. The model was tested for accuracy using two different manufacturers' data of roof top unit packages with capacity ranging from 2 tons to 25 tons. Furthermore, the model was evaluated and tested on an actual VAV system using three months' worth of measured data. The results show that the model can provide accurate estimation with the coefficient of variance (CV) less than 2% and it can be used for several applications.
ACCESSION #
87646238

 

Related Articles

  • The New "New Most Efficient Thing" in Commercial HVAC Systems. SMITH, WADE W. // ASHRAE Journal;Fall2013 Supplement, p16 

    The article discusses the heating, ventilation, and air-conditioning (HVAC) system in commercial buildings in North America. It argues on the energy efficiency and low cost of the variable air volume (VAV) system for air quality, ventilation and heat recovery at commercial buildings. It suggests...

  • Experimental Study of Lab Controlled Faults in Dual-Duct VAV System. Ran Liu; Xiaohui Zhou; Milbrandt, Robert; Lochhead, Scott // ASHRAE Transactions;2015, Vol. 121 Issue 2, p1 

    No abstract available.

  • HVAC: The Next Generation. Mumma, Stanley A.; Ashrae, P.E. // Consulting-Specifying Engineer;Jan2003, Vol. 33 Issue 1, p38 

    Focuses on the integration of outside-air, radiant ceilings and total energy recovery in the heating, ventilation and airconditioning (HVAC) strategy in the U.S. Advantages of HVAC over variable-air-volume (VAV) systems; Advantages of VAV over other all-air systems; Reduction of fan energy...

  • Detecting Critical Supply Duct Pressure. Federspiel, Clifford C. // ASHRAE Transactions;2005, Vol. 111 Issue 1, p957 

    Fan energy use in variable-air-volume (VAV) systems can be reduced by resetting the supply duct pressure. The standard way to reset duct pressure is by controlling the most open terminal damper to a nearly open position. This strategy is rarely used because of a variety of issues including...

  • A Semi-Automated Commissioning Tool for VAV Air-Handling Units: Functional Test Analyzer. Haves, Philip; Moosung Kim; Najafi, Massieh; Peng Xu // ASHRAE Transactions;2007, Vol. 113 Issue 1, p380 

    A software tool that automates the analysis of functional tests for air-handling units is described. The tool compares the performance observed during manual tests with the performance predicted by simple models of the components under test that are configured using design information and...

  • Volumetric fan control key to maximized hvac cost reduction. MOORE, SCOTT // Air Conditioning, Heating & Refrigeration News;12/01/97, Vol. 202 Issue 14, p9 

    Reports that the potential for reduced energy costs has fueled an increase in variable air volume system retrofits with variable-frequency drives in the United States. Building pressure strategy; Volumetric fan tracking.

  • Energy Efficiency in a Box. Faris, Gus // ASHRAE Journal;Jun2012, Vol. 54 Issue 6, p21 

    A letter to the editor is presented in response to the article about variable air volume terminal units in the March 2012 issue.

  • Energy Efficiency in a Box. Dieckmann, John // ASHRAE Journal;Jun2012, Vol. 54 Issue 6, p23 

    A response from the author of the article about variable air volume terminal units in the March 2012 issue is presented.

  • VAV vs. Radiant. SASTRY, GURUPRAKASH; RUMSEY, PETER // ASHRAE Journal;May2014, Vol. 56 Issue 5, p16 

    The article compares the optimized variable air volume (VAV) and radiant cooling with dedicated outdoor air system (DOAS) heating, ventilation and air-conditioning (HVAC) systems installed in Software Development Block 1 (SDB-1) building of computer services company Infosys in Hyderabad, India....

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics