پیوندهای مفید
آمار
| تعداد نشریات | 8 |
| تعداد شماره‌ها | 427 |
| تعداد مقالات | 5,557 |
| تعداد مشاهده مقاله | 6,705,711 |
| تعداد دریافت فایل اصل مقاله | 5,668,797 |
ارزیابی تجربی یک سیستم بهبود دهنده عملکرد انرژی در کولر گازی اسپلیت | ||
| نشریه مهندسی مکانیک امیرکبیر | ||
| مقاله 6، دوره 52، شماره 2، اردیبهشت 1399، صفحه 365-380 اصل مقاله (1.34 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22060/mej.2018.14298.5832 | ||
| نویسندگان | ||
| حسنعلی ازگلی* 1؛ کیوان سیدی نیاکی2 | ||
| 1مدیر گروه بهره وری و تبدیل انرژی / پژوهشکده مکانیک سازمان پژوهش های علمی و صنعتی ایران | ||
| 2مربی، پژوهشکده مکانیک، سازمان پژوهش های علمی و صنعتی ایران، تهران، ایران | ||
| چکیده | ||
| در این پژوهش، تأثیر استفاده از یک لایه تبخیری مرطوب در هوای ورودی به کندانسور، بر روی عملکرد کولر گازی اسپلیت مورد مطالعه قرار گرفته است. همچنین، با ارائه ابتکاری جدید، آب تخلیه تولید شده از تقطیر رطوبت موجود در هوای داخل، جمع آوری و در لایه تبخیری کندانسور به مصرف رسیده است. هوای عبوری از روی سطح کندانسور، پیش از ورود در اثر تماس با لایه تبخیری، کاهش دما می‌یابد. مطالعات تجربی صورت گرفته و نتایج به دست آمده از آزمایش نمونه ساخته شده نشان داد که در اثر کاهش دمای هوای ورودی به کندانسور با استفاده از این طرح سرمایش تبخیری، به طور متوسط مصرف انرژی الکتریکی بیش از 12 درصد کاهش و ضریب عملکرد به مقدار 15/1 درصد افزایش داشته است. همچنین، علیرغم اثرات مطلوب مکانیزم ارائه شده در این تحقیق بر روی ضریب عملکرد و میزان مصرف انرژی سیستم، نتایج تحلیل‌های پارامتریک نشان از کاهش اثربخشی سیستم کندانسور تبخیری با افزایش دما و رطوبت نسبی محیط داشته است. بطوریکه درصد تغییرات ضریب عملکرد سیستم با افزایش دمای محیط )از 30/5 به44/5 درجه سلسیوس( از %18/22 به %15/05 و همچنین با افزایش رطوبت نسبی محیط )از 35 به 70 درصد( از %18/14 به %6/4 کاهش می‌یابد. | ||
| کلیدواژه‌ها | ||
| کولر گازی اسپلیت؛ آب تخلیه؛ کندانسور تبخیری؛ کاهش مصرف انرژی؛ ضریب عملکرد | ||
| عنوان مقاله [English] | ||
| Experimental Evaluation of an Energy Efficiency Improvement System in Split Air Conditioner | ||
| نویسندگان [English] | ||
| Hassan Ali Ozgoli1؛ Keyvan Seiedi Niaki2 | ||
| 1Head of Energy Conversion and Productivity Technical Group/ Department of Mechanical Engineering/ Iranian Research Organization for Science and Technology (IROST) | ||
| 2Instructor, Department of Mechanical Engineering, Iranian Research Organization for Science and Technology (IROST) | ||
| چکیده [English] | ||
| In this study, the effect of using a wet evaporation layer in the inlet air of the condenser on the performance of split air conditioner has been investigated. Also, based on a new contribution, the drained water generated due to the ambient moisture distillation on the evaporator coil, collected and used in the evaporation layer. The temperature of passed air through the surface of the condenser is reduced before entering the condenser due to contact with the evaporation layer. Applied experimental studies and results of prototype test showed that by reducing the temperature of condenser inlet air using proposed evaporative cooling system, the average electrical energy consumption decreases more than 12% and the coefficient of performance increases about 15.1%. Also, despite the desired effects of the proposed mechanism on the coefficient of performance and system energy consumption, the results of parametric studies indicated that effectiveness of the evaporative condenser reduced due to the ambient temperature and relative humidity. So that, the system performance changes decreases with increasing ambient temperature (30.5 to 44.5 Celsius) from 18.22% to 15.05%, and also it declines from 18.14% to 6.4%, as well as reduction of the relative humidity (from 35 to 70 percent). | ||
| کلیدواژه‌ها [English] | ||
| Split air conditioner, Drain water, Evaporative condenser, Energy consumption reduction, Coefficient of performance | ||
| مراجع | ||
|
[1] E. Hajidavalloo, Application of evaporative cooling on the condenser of window-air-conditioner, Applied Thermal Engineering, 27(11) (2007) 1937-1943. [2] E. Hajidavalloo, H. Eghtedari, Performance improvement of air-cooled refrigeration system by using evaporatively cooled air condenser, International Journal of Refrigeration, 33(5) (2010) 982-988. [3] D.P. Chainarong Chaktranond, An Experimental Evaluation of Energy Saving in a Split-type Air Conditioner with Evaporative Cooling Systems International Transaction Journal of Engineering, Management, & Applied Sciences & Technologies, 1(1) (2010) 9-18. [4] Andrew D. Althouse, Carl H. Turnquist, Alfred F. Bracciano, Daniel C. Bracciano, Gloria M. Bracciano, Modern Refrigeration and Air Conditioning, Goodheart-Willcox, 2016. [5] Roger W. Haines, Michael E. Myers, HVAC Systems Design Handbook, Fifth Edition, McGraw-Hill Education, 2009. [6] M.G. Vrachopoulos, A.E. Filios, G.T. Kotsiovelos, E.D. Kravvaritis, Incorporated evaporative condenser, Applied Thermal Engineering, 27(5) (2007) 823-828. [7] D.Y. Goswami, G.D. Mathur, S.M. Kulkarni, Experimental Investigation of Performance of a Residential Air Conditioning System with an Evaporatively Cooled Condenser, Journal of Solar Energy Engineering, 115(4) (1993) 206-211. [8] M. Waly, W. Chakroun, N.K. Al-Mutawa, Effect of pre- cooling of inlet air to condensers of air-conditioning units, International Journal of Energy Research, 29(8) (2005) 781-794. [9] I. Jassim, Enhancement the performance of condenser of split type air conditioning system by using evaporative cooling, Al Mustansiriyah University, Mechanical Engineering Department, 2011. [10] Wael M. El-Maghlany, E. Eid, Mohamed A. Teamah, S. Mansour, Enhancement of a Refrigeration Cycle by Bled Water Atomization from the Conditioned Space into the Condenser Cooling Air, International Journal of Advances Science and Technical Research, 5(2) (2012) 291-303. [11] J Jerold John Britto, A. Vasanthanathan, Performance evaluation of window air conditioner by incorporating evaporative cooling system on the condenser, in: International Conference on Energy Efficient Technologies for Sustainability (ICEETS), Nagercoil, India, 2013 [12] Mao-Yu Wen, Ching-Yen Ho, Kuang-Jang Jang, Cheng-Hsiung Yeh, Experimental study on the evaporative cooling of an air-cooled condenser with humidifying air, Heat and Mass Transfer, 50(2) (2014) 225–233. [13] Manoj K. Prajapati, A. Choube, Enhancement the Performance of Condenser of Split type Air Conditioning System by using Evaporative Cooling: A Review, International Journal of Engineering Sciences & Research Technology, 3(7) (2014) 398-403. [14] A.S. Alotaibi, Performance of air conditioning system using air cooled condenser with water atomization, Mansoura University, 2016. [15] N.A. Jassim, Thermal performance evaluation of water mist assisted air conditioner, University of Baghdad, 2014. [16] A.A. Al-Farayedhi, N.I. Ibrahim, P. Gandhidasan, A Novel Technique for Reducing Cooling Load of an Air Conditioning System Operating in Hot and Humid Climates, in, 2013. [17] A.P. Sawant, N. Agrawal, P. Nanda, Performance assessment of an evaporative cooling-assisted window air conditioner, International Journal of Low-Carbon Technologies, 7(2) (2011) 128-136. [18] M. Seraj Khorami, E. Hajidavalloo, Investigating the effect of using evaporative condenser instead of air condenser on chiller power consumption, in: The First National Conference on the Development of the Civil Engineering, Architecture, Electrical and Mechanical Engineering of Iran, Gorgan, Iran, 2014. [19] E. Hajidavalloo, Application of evaporative cooling in the air condenser of domestic air conditioners and its role in reducing energy consumption, in: the 2nd International Conference on Fuel Consumption Optimization in Building, Tehran, Iran 2003. [20] M Agharafiei, M.A. Mehrabian Study of the effect of water spray on the performance of coolant and evaporative condenser during crucifixion, in: 3rd National Conference of Thermal Power plants, Tehran, Iran 2011. [21] I.N. Ardita, I.W.A. Subagia, The application of condensate water as an additional cooling media intermittently in condenser of a split air conditioning, in: 2nd International Joint Conference on Science and technology –IJCST 2017, Nusa Dua Bali, Indonesia, 2017. [22] B.J. Phukan, S.K. Deb, Performance Improvement of Split Air Conditioner Using Evaporative Cooling Method in the Climatic Condition of GUWAHATI, ASSAM, International Research Journal of Engineering and Technology (IRJET), 5(2) (2018) 321-328. [23] Annual Energy Outlook 2016, in, U.S. Energy Information Administration (IEA), 2016. [24] U. Lee, Han, J., and Elgowainy, A., Water Consumption Factors for Electricity Generation in the United States, Argonne National Laboratory, Energy Systems Division, 2016. [25] W. Leidenfrost, B. Korenic, Analysis of evaporative cooling and enhancement of condenser efficiency and of coefficient of performance, Heat and Mass Transfer, 12(1) (1979) 5–23. [26] J. Watt, W. Brown Evaporative air conditioning handbook, Third ed., Fairmont Press Inc., Lilburn, Georgia, USA, 1997. [27] ASHRAE Handbook Heating, Ventilating, and Air Conditioning Systems and Equipment, ASHRAE, 2012. | ||
|
آمار تعداد مشاهده مقاله: 1,053 تعداد دریافت فایل اصل مقاله: 2,103 |
||