Heat and Mass Transfer in the Human Respiratory Tract at Hyperbaric Pressures.
Abstract
The primary objective of this study is to model the simultaneous heat and momentum transfer in the lower respiratory tract using metal pipe. The inlet gas temperature for this study was kept near 80F, and the wall temperature near 118F, giving approximately the same temperature differential between the tube walls and the gas stream. A hot wire anemometer, coupled to a micromanipulator was used to take both temperature and velocity measurements. Readings were taken at thirty horizontal and thirty vertical equispaced radial positions. Data was recorded on a digital printer and reduced by appropriate programs. The anemometer calibration curve was included in the reduction programs. Experimental velocity and temperature profiles are presented in two and three dimensional format. An analysis of an overall heat transfer coefficient for each branch and each bifurcation is presented. A bulk temperature was calculated at each axial position and from this data an overall heat transfer coefficient was determined. (Modified author abstract)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1973
- Accession Number
- AD0771370
Entities
People
- Ernest A. Kuonen
- L. Sigfred Linderoth Jr.
Organizations
- Duke University