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Performance of ECM controlled VAV fan powered terminal units

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dc.contributor.advisor O'Neal, Dennis en_US
dc.creator Cramlet, Andrew Charles en_US
dc.date.accessioned 2010-01-15T00:10:07Z en_US
dc.date.accessioned 2010-01-16T01:11:20Z
dc.date.available 2010-01-15T00:10:07Z en_US
dc.date.available 2010-01-16T01:11:20Z
dc.date.created 2008-08 en_US
dc.date.issued 2009-05-15 en_US
dc.identifier.uri http://hdl.handle.net/1969.1/ETD-TAMU-3000
dc.description.abstract Empirical performance models of fan airflow, primary airflow and power consumption were developed for series and parallel variable air volume fan powered terminal units. An experimental setup and test procedure were created to test the terminal units at typical design pressures and airflows. Each terminal unit observed in this study used an 8 in (20.3 cm) primary air inlet. Two fan motor control methods were considered. The primary control of interest was the electronically commutated motor (ECM) controller. Data collected were compared with previous research regarding silicon rectified control (SCR) units. Generalized models were developed for both series and parallel terminal units. Coefficients for performance models were then compared with comparable SCR controlled units. Non-linear statistical modeling was performed using SPSS software (2008). In addition to airflow and power consumption modeling, power quality was also quantified. Relationships between real power (watts) and apparent power (VA) were presented as well as harmonic frequencies and total harmonic distortion. Power quality was recorded for each ECM controlled terminal unit tested. Additional tests were also made to SCR controlled terminal units used in previous research (Furr 2006). The airflow and power consumption performance models had an R2 equal to 0.990 or greater for every terminal unit tested. An air leakage model was employed to account for leakage in the parallel designed VAV terminal units when the internal fan was turned off. For the leakage model, both ECM and SCR controlled units achieved an R2 greater than or equal to 0.918. en_US
dc.format.medium electronic en_US
dc.format.mimetype application/pdf en_US
dc.language.iso en_US en_US
dc.subject ECM en_US
dc.subject VAV en_US
dc.subject FPTU en_US
dc.subject Fan en_US
dc.subject Powered en_US
dc.subject Terminal en_US
dc.subject Unit en_US
dc.title Performance of ECM controlled VAV fan powered terminal units en_US
dc.type Book en
dc.type Thesis en
thesis.degree.department Mechanical Engineering en_US
thesis.degree.discipline Mechanical Engineering en_US
thesis.degree.grantor Texas A&M University en_US
thesis.degree.name Master of Science en_US
thesis.degree.level Masters en_US
dc.contributor.committeeMember Heffington, Warren en_US
dc.contributor.committeeMember Jackson, Jerry en_US
dc.type.genre Electronic Thesis en_US
dc.type.material text en_US
dc.format.digitalOrigin born digital en_US

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