Performance analysis of turbine ventilators for refugee camps usage

The first part of the study was intended to select the best turbine ventilator design to test its performance while in the second part, simulation study was conducted on the selected design in comparison with the benchmarks (currently market-available turbine ventilators).
Nội dung trích xuất từ tài liệu:
Performance analysis of turbine ventilators for refugee camps usageInternational Journal of Mechanical Engineering and Technology (IJMET)Volume 10, Issue 03, March 2019, pp. 1373-1383. Article ID: IJMET_10_03_138Available online at http://www.iaeme.com/ijmet/issues.asp?JType=IJMET&VType=10&IType=3ISSN Print: 0976-6340 and ISSN Online: 0976-6359© IAEME Publication Scopus Indexed PERFORMANCE ANALYSIS OF TURBINEVENTILATORS FOR REFUGEE CAMPS USAGE M. I. N. Ma’arof Department of Mechanical Engineering, INTI International University, Persiaran Perdana BBN, Putra Nilai, 71800 Nilai, Negeri Sembilan, Malaysia Girma T. Chala Department of Mechanical (Well) Engineering, International College of Engineering and Management, P.O. Box 2511, C.P.O Seeb 111, Sultanate of Oman Shree R. Nair Department of Mechanical Engineering, INTI International University, Persiaran Perdana BBN, Putra Nilai, 71800 Nilai, Negeri Sembilan, Malaysia ABSTRACT A turbine ventilator is a promising technology used to achieve multiple cooling conditions. The present study proposed a method to improve the indoor air quality (IAQ) of refugee camps to overcome issues related to air borne diseases. A turbine ventilator was designed based on the ISO and ASHRAE standards. The effect of the turbine ventilation fan on the IAQ of a modelled refugee shelter was investigated via Computational Fluid Dynamics (CFD) simulation. The first part of the study was intended to select the best turbine ventilator design to test its performance while in the second part, simulation study was conducted on the selected design in comparison with the benchmarks (currently market-available turbine ventilators). It was observed that a 55° blade angle design performed best at 115 RPM and was tested for indoor air quality improvement for the transitional shelter found in the Dadaab region, Kenya. ISO 7730 (2005) standards were met with average internal air velocity of 0.25m/s. PMV and PPD for the whole space were at 0.452 and 9.938%, respectively, which are well within the recommended values. The results from this study would hopefully provide an insight into future developments of turbine ventilators not only for refugee camps, but also for other sectors requiring improvements to indoor air quality. Keywords: Turbine ventilator, Performance, Percentage of dissatisfied, Refugee camps. Cite this Article: M. I. N. Ma’arof, Girma T. Chala and Shree R. Nair, Performance Analysis of Turbine Ventilators for Refugee Camps Usage, International Journal of Mechanical Engineering and Technology, 10(3), 2019, pp. 1373-1383. http://www.iaeme.com/IJMET/issues.asp?JType=IJMET&VType=10&IType=3 http://www.iaeme.com/IJMET/index.asp 1373 editor@iaeme.com M. I. N. Ma’arof, Girma T. Chala and Shree R. Nair1. INTRODUCTIONRefugee camps in some places have not been getting sufficient attentions when it comes toindoor air quality and ventilation. The influx of refugees creates overpopulation and does nothelp reduce the spread of diseases, such as tuberculosis and influenza viruses. Over the years,the majority of refugee resides in the Dadaab region, Kenya where an estimate of 425,938refugees are registered. The Kenya Ministry of health established nationwide facilities basedon the spread of influenza pandemic in 2006, where the camps of Kakuma and Dadaab beingthe main targets [1]. Indoor air quality (IAQ) encompasses the structure and its surroundingsand its assessment is based on the level of health and comfort of the occupants. Chianga andLaib [2] discussed that the indoor environment is complex and dependent on many factors. Themain factors rely on identifying the air contaminant sources and proposing proper ventilation.Although not well documented, the effects of airborne contaminants towards deterioratinghuman health in the African region were brought to light in the studies conducted by [3].Consequently, in tight and packed spaces like the refugee camps of Dadaab, Kenya, the chanceof these contaminations spreading and affecting the rest of the camp is high, if proper care isnot put in place. The main purpose of ventilation in regard to air quality lies in its ability totransport out pollutants and contaminated air [4]. A review on different designs of wind drivennatural and hybrid ventilation systems yielded that turbine ventilators are the best option whencost, performance and construction are concerned [5]. The same study also presented argumentssupporting the fact that turbine ventilators are the ideal choice considering its size and its abilityto maintain humidity and reduce the accumulation of contaminants and pollutants ...