عنوان مقاله [English]
نویسنده [English]چکیده [English]
Providing welfare status for personnel of industrial plants is necessary and also emphasized in all standards. Preparing fresh, cool and clean air especially in warm seasons is one of the most important duties of plant owners to keep workers safe and healthy. Although in many workshops some cooling and air-conditioning systems (commonly mixing ventilation systems) were installed, most of them have economical problems and may not be energy efficient as the entire room volume gets cooled. The purpose of this article is presenting an executive improved solution in architecture to upgrade existing Mixing Ventilation Systems (MVS) by intervening in architectural variables. The new solution is compared with a traditional MVS taking into account technical and economic performances. The study was carried out resorting to experimental measurements on a single-diffuser pilot installation of the existing MVS in an actual industrial facility. The research method is experimental: the thermometry tests and interviews with workers which were carried out after initial observations and the case study selection. After that some interventions in architecture were impelled and the testes were repeated. To confirm the results, after interventions, a questionnaire was given to the operators, and their answers were registered. A comparison was fulfilled with respect to energy consumption and also the consumed power was checked before and after the interventions. The results demonstrate that architectural alterations based on this research can improve the quality of existing MVS (Satisfactions of the workers approved the interventions) and reduce the energy consumptions. It could be generalized.
ACGIH (1951). The Industrial Ventilation Manual. USA: The American Conference of Governmental Industrial Hygienists (ACGIH) Ltd.
Amidpoor, M. (2010). Investigation of Domestic Flueless Space Heaters Effects on Indoor Air Quality, Research Project, Iran: Khaje Nasir University, Department of Mechanical Engineering.
Arens, A.D. (2000). Evaluation of Displacement Ventilation for Use in High-Ceiling Facilities, Master’s Thesis, Department of Mechanical Engineering, Massachussets Institute of Technology, Cambridge, USA.
ASHREA (1993). ASHRE Handbook – Fundamentals. Atlanta: American Society of Heating, Refrigeration and Air Conditioning Engineers Inc.
Burgess, W. A. (1995). Recognition of Health Hazards in Industry. New York: Wiley Ltd. Caputo, A. C. & Pelagagge, P. M. (2008). Upgrading Mixed Ventilation Systems in Industrial Conditioning, Applied Thermal Engineering, 29 (2009): 3204–3211, 2009, Elsevier Ltd.
Curd, E. (2006). VENTILATION (Legislation & Standards). UK: The European Commission, Energy Performance of Buildings Directive and its Ventilation Implications.
Ghali, K., Ghaddar, N. & Ayoub, M. (2007). Chilled Ceiling and Displacement Ventilation System for Energy Saving: Case Study: International Journal of Energy Research, 31, 743–759.
Groat, L. & Vang, D. (2004). Research Methods in Architecture, Translated by Einifar, a. Tehran: TU Ltd. Environmental Agent Factory Establishment Standards, (2001-6). Available from: http://law.epa.gov.tw/en/ laws/671481369.
html Karimipanah, T. & Awbi, H.B. (2002). Theoretical and Experimental Investigations of Impinging jet Ventilation and Comparison with Wall Displacement Ventilation, Building and Environment 37, 1329–1342.
Khorasanizade, H. & et al., (2010). “Digital Modeling of Airflow and Temperature in Ventilating Spaces”. In: First International Conference of Heating, Cooling, & Air Conditioning.
Loomans, M. & Mook, F. van (1995). Survey on Measuring Indoor Airflows FAGO, Report 95.25.W., Eindhoven University of Technology Sweden.
NOISH (1999). Available from: http://www.cdc.gov/ noish/nrinev.html.
Novoselac, A. & Srebric, J. (2002). A Critical Review on the Performance and Design of Combined Cooled Ceilings and Displacement Ventilation Systems, Energy and Building 34, 497–509.
Park, H.J. & Holland, D. (2001). The Effect of Location of a Convective Heat Source on Displacement Ventilation: CFD Study, Building and Environment 36, 883–889.
Rees, S.J. & Haves, P. (2001). A nodal Model for Displacement Ventilation and Chilled Ceiling Systems in Office Spaces, Building and Environment 36, 753–762.
Skistad, H. (1994). Displacement Ventilation, Research Studies Press Ltd.
Soule ,R .D” .(1991) .Industrial Hygiene Engineering Controls ,in G .Clayton and F .E .Clayton ,Eds ,“.Patty‘s Industrial Hygiene and Toxicology ,Vol ,1 .part B.24-93.
Xing, H. & Awbi, H.B. (2002). Measurement and Calculation of the Neutral Height in a Room with Displacement Ventilation, Building and Environment, 37, 961–967.