The nulling test: A new measurement technique for estimating duct leakage in residential homes

Paul W Francisco, L. S. Palmiter

Research output: Contribution to journalArticlepeer-review

Abstract

This paper presents a new method for estimating duct leakage in residential homes. This method, called the nulling test, does not require assumptions of the leakage characteristics of the house or the ducts. It measures leakage to the outside and does so at operating conditions. This provides the leakage parameter that is necessary for estimating thermal distribution system efficiency. This paper describes the nulling test in detail, including both the theory and how to perform the test. Advantages and disadvantages of the nulling test are discussed and compared to those of other tests that have been used in the past. Following these discussions, the results of several field tests of the nulling tests are presented and compared with those of other tests.

Original languageEnglish (US)
Pages (from-to)297-303
Number of pages7
JournalASHRAE Transactions
Volume107 PART. 1
StatePublished - 2001
Externally publishedYes

ASJC Scopus subject areas

  • Building and Construction
  • Mechanical Engineering

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