TITLE:
Investigation of the Effects of Air-Conditioning System on the Temperature and Speed of Automobile Engine Using Paired T-Test and Regression Analysis
AUTHORS:
Olufemi Sylvester Bamisaye, Anthony Yinka Oyerinde, Ubong Akpan Essien
KEYWORDS:
Paired t-Test, Automobile Air Conditioning, Regression, Temperature, Speed
JOURNAL NAME:
Open Access Library Journal,
Vol.6 No.1,
January
10,
2019
ABSTRACT: This study investigated the effect of air-conditioning system on the tem-perature and speed of automobile engine before and after the air-conditioning system was put to use, while the vehicle was at static position. A 16-valve Nissan engine was used for this study, the engine was first run for 20 minutes before the data are collected. In the first case, the temperatures (℃) of the engine were taken in the interval of 10 minutes before and after the air-conditioning system is run and in the second case, the speeds of the engine were taken under the same conditions. The research hypothesis was formulated for 20 observations to argue that neither temperature nor speed of the engine changes when the air-conditioning system is put on and Paired t-Test statistics were used. The obtained result of t-statistics analysis for temperature and speed were -4.0329 and -5.51832 respectively. These results when compared to their critical values at 5 percent significant level, t-Statcritical