Pakistan Research Repository


Syed, Zafar Ilyas (2004) ENVIRONMENTAL SIMULATION STUDIES IN QUETTA. PhD thesis, University of Balochistan, Quetta.



The critical reviews on solar wind and weather data of Quetta Pakistan and studies on regional climate changes and its impacts as well as simulation of environment with mathematical modeling respectively are presented on the basis of analytic pedagogic intuitive and logical approaches. We circumvented the areas of researches, which were over-emphasized whereas some of which are pertinent to our studies in the thesis. A relationship between humidity and temperature is developed which shows a Gaussian trend to fit the experimental data. We also deciphered another relationship for solar energy and its frequency, which yielded an inverse Gaussian behavior. A time series analysis is made on data of humidity and temperature variations by computing the auto-correlation functions (ACFs) which shows that the first two coefficients, i.e auto covariance coefficients at lag are significantly different from zero. The results of ACFs for humidity & temperature respectively show short-term correlations and high particles and pollutants at Quetta valley suggests less occurrence of low pressure at relatively higher altitudes. The wind contour maps of the whole country are prepared which categorized wind speed ranges at different locations and indicated that the highest wind speed occurs in summer and the lowest in winter. The analysis of wind speed data provides bather prospects for wind energy conversion systems in Pakistan. The maximum solar energy in the from of absorbed heat is intercepted at s=0 and s=Q-15 where is the tilt angle and d is the latitude of Quetta (latitude 30 11 N longitude 66 57 E) which is elevated at a distance of 1799 m from the sea level. Aluminum sheet is found as the best receptor of solar energy as compared to other flat plate collectors. A decentralized design of solar voltage electrification is also proposed. The daily values of global solar radiation of successive clear sky days when compared to each other are not always equal. This is due to fact that the level of atmospheric pollutions depends upon meteorological situations influencing the areas. The variations of global solar radiation values at Quetta are large during summer and autumn due to fine dust particles and pollutants covering the valley and indeed very low humidity in the valley. The percentage estimation of the total atmospheric pollution in Quetta for summer and winter is estimated 34% and 59% respectively on the basis of our self developed harmonic analysis model. Another simple model is developed for the diffuse luminous efficacy for vertical surfaces facing North, East, South and West. The model has the same mathematical form for the four surfaces, with the two empirical coefficients being different for each of them. This model yields better results when the amount of direct radiation incident on the surface is small. For the vertical surface facing North, the model offers an excellent performance. Information regarding epidemiological factors responsible for parasitic infection were collected through distribution of questionnaire/Performa among uneducated families. While in villages and hospital /wards personal visits were made. Through observations and interviewing parents, teachers and surveying staff particularly those preparing food and diapering infants and children both in houses schools day care centre and hospitals were made. Personal hygiene feeding behavior, pattern practices believes and customs were noted. Environmental conditions of all these study areas were deeply investigated

Item Type:Thesis (PhD)
Uncontrolled Keywords:environmental simulation studies, solar wind, auto-correlation functions (acfs), parasitic infection, solar data, wind and weather data, direct radiations, solar plate collectors, thermal performance, photovoltaic power system (pps)
Subjects:Physical Sciences (f) > Physics(f1)
ID Code:973
Deposited By:Mr. Muhammad Asif
Deposited On:24 Nov 2006
Last Modified:04 Oct 2007 21:03

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