Development and validation of a fan performance model for typical packaged HVAC systems.(Report): An article from: ASHRAE Transactions

This digital document is an article from ASHRAE Transactions, published by American Society of Heating, Refrigerating, and Air-Conditioning Engineers, Inc. on January 1, 2010. The length of the article is 3824 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available immediately after purchase. You can view it with any web browser.

From the author: Existing methods for fan performance model are mostly based on fan static pressure and fan airflow. However, for typical packaged HVAC units, a non-ideal airflow pattern arises due to the compact arrangement of the interior components, resulting in both the fluctuation of the field fan static pressure and the difficulties of installing the pressure sensors. This paper describes the development of the fan performance greybox model, which relates fan power consumption to fan speed and airflow, both of which are much easier to measure. Several practical field measuring or prediction methods of blower speed for the model implement and validation are proposed. Finally, the model is evaluated in terms of interpolation and extrapolation using the manufacturers' data and validated with laboratory data. This model can be used to predict the power consumption and fan static pressure, for comparative analysis of fan types, wheel diameters widths and air density, and for fault detection and diagnosing of fan operation.

Citation Details
Title: Development and validation of a fan performance model for typical packaged HVAC systems.(Report)
Author: Keke Zheng
Publication:ASHRAE Transactions (Magazine/Journal)
Date: January 1, 2010
Publisher: American Society of Heating, Refrigerating, and Air-Conditioning Engineers, Inc.
Volume: 116 Issue: 1 Page: 323(7)

Article Type: Report

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