A figure of merit for overall performance and value of AFDD tools

David P. Yuill; James E. Braun

doi:10.1016/j.ijrefrig.2016.11.015

A figure of merit for overall performance and value of AFDD tools

David P. Yuill, James E. Braun

Research output: Contribution to journal › Article › peer-review

16 Scopus citations

Abstract

A figure of merit, V, to characterize the value of an AFDD maintenance tool is presented. The AFDD tool is fed data representing air-conditioners operating with and without faults across a range of conditions. The calculation of V considers the probability of each scenario occurring, the tool's response, and the resulting implications. These results are summed to give a typical average value for deploying the AFDD tool, as compared to maintenance being performed without AFDD. Case studies illustrate the calculation of V. Six AFDD tools and two idealized tools are evaluated. Five of the six real tools give negative V, meaning that their use causes more harm than good. The sixth shows approximately $10 benefit per nominal ton of air-conditioner capacity per typical maintenance visit. This represents about half of the maximum potential value. These results demonstrate the importance of measuring AFDD performance and the potential monetary benefits of AFDD.

Original language	English (US)
Pages (from-to)	649-659
Number of pages	11
Journal	International Journal of Refrigeration
Volume	74
DOIs	https://doi.org/10.1016/j.ijrefrig.2016.11.015
State	Published - Feb 1 2017

Keywords

Air-conditioner
Diagnostics
Evaluation
FDD
FOM

ASJC Scopus subject areas

Building and Construction
Mechanical Engineering

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10.1016/j.ijrefrig.2016.11.015

Cite this

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title = "A figure of merit for overall performance and value of AFDD tools",

abstract = "A figure of merit, V, to characterize the value of an AFDD maintenance tool is presented. The AFDD tool is fed data representing air-conditioners operating with and without faults across a range of conditions. The calculation of V considers the probability of each scenario occurring, the tool's response, and the resulting implications. These results are summed to give a typical average value for deploying the AFDD tool, as compared to maintenance being performed without AFDD. Case studies illustrate the calculation of V. Six AFDD tools and two idealized tools are evaluated. Five of the six real tools give negative V, meaning that their use causes more harm than good. The sixth shows approximately $10 benefit per nominal ton of air-conditioner capacity per typical maintenance visit. This represents about half of the maximum potential value. These results demonstrate the importance of measuring AFDD performance and the potential monetary benefits of AFDD.",

keywords = "Air-conditioner, Diagnostics, Evaluation, FDD, FOM",

author = "Yuill, {David P.} and Braun, {James E.}",

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doi = "10.1016/j.ijrefrig.2016.11.015",

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T1 - A figure of merit for overall performance and value of AFDD tools

AU - Yuill, David P.

AU - Braun, James E.

PY - 2017/2/1

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N2 - A figure of merit, V, to characterize the value of an AFDD maintenance tool is presented. The AFDD tool is fed data representing air-conditioners operating with and without faults across a range of conditions. The calculation of V considers the probability of each scenario occurring, the tool's response, and the resulting implications. These results are summed to give a typical average value for deploying the AFDD tool, as compared to maintenance being performed without AFDD. Case studies illustrate the calculation of V. Six AFDD tools and two idealized tools are evaluated. Five of the six real tools give negative V, meaning that their use causes more harm than good. The sixth shows approximately $10 benefit per nominal ton of air-conditioner capacity per typical maintenance visit. This represents about half of the maximum potential value. These results demonstrate the importance of measuring AFDD performance and the potential monetary benefits of AFDD.

AB - A figure of merit, V, to characterize the value of an AFDD maintenance tool is presented. The AFDD tool is fed data representing air-conditioners operating with and without faults across a range of conditions. The calculation of V considers the probability of each scenario occurring, the tool's response, and the resulting implications. These results are summed to give a typical average value for deploying the AFDD tool, as compared to maintenance being performed without AFDD. Case studies illustrate the calculation of V. Six AFDD tools and two idealized tools are evaluated. Five of the six real tools give negative V, meaning that their use causes more harm than good. The sixth shows approximately $10 benefit per nominal ton of air-conditioner capacity per typical maintenance visit. This represents about half of the maximum potential value. These results demonstrate the importance of measuring AFDD performance and the potential monetary benefits of AFDD.

KW - Air-conditioner

KW - Diagnostics

KW - Evaluation

KW - FDD

KW - FOM

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JO - International Journal of Refrigeration

JF - International Journal of Refrigeration

ER -

A figure of merit for overall performance and value of AFDD tools

Abstract

Keywords

ASJC Scopus subject areas

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