Fluctuation Factors on NOx Emission from Medium Speed Diesel Engine

Part1: Follow-up Survey on NOx Concentration from Cogeneration Engines

Abstract

This paper describes the influences of fluctuation factors in respect to NOx emissions from medium speed generating diesel engines. In order to confirm the possible influences of absolute humidity Ha, air temperature Ta and intercooled air temperature Tsc, in an attempt to correct the measured result of NOx, annual NOx data was modified through two cogeneration engines of 220mm and 280mm in bore.
The result indicates that the influence degree from the absolute humidity factor is larger than from the other factors. It was found that annual NOx variations could not be eliminated by the correction formula as given by the Technical Code.