Semester

Fall

Date of Graduation

2007

Document Type

Thesis

Degree Type

MS

College

Statler College of Engineering and Mineral Resources

Department

Mechanical and Aerospace Engineering

Committee Chair

Bruce Kang

Abstract

Diesel engine emissions are highly complex mixtures. They consist of a wide range of organic and inorganic compounds distributed among the gaseous and particulate phases. Public health concern has arisen about these emissions for reasons like - the particles in diesel emissions are very small (90% or less than 1mum by size), making them readily respirable, these particles have hundreds of chemicals adsorbed onto their surfaces, including many known or suspected mutagens and carcinogens.;For investigating the effects of Diesel Exhaust Particulates (DEP) on animal samples, a thorough experimental methodology is a must. In this present research a systematic experimental set up has been designed to cater those needs. For that, a well controlled inhalation testing chamber has been demonstrated using i-Server humidity and temperature controller, with which the relative humidity and temperature of the testing chamber can be remotely monitored. For controlling the RH of the chamber, a voltage switch was connected to the air humidifier. For determining the amount of DEP required for any given inhalation testing chamber, experiments were conducted in Small Animal Inhalation Testing Facility at West Virginia University using NIST 2975 dust. In addition to the experimental results, an analytical model to determine the amount of dust required for any testing chamber has also been derived. The results showed that i-server controller set up, can be successfully used to monitor the testing chamber remotely and the derived model for determining the sample amount is in close agreement with the experimental results.

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