An experimental analysis of air source heat pump water heater

Isıtma ve soğutma mühendisler için önemli araştırma alanlarından birisidir. Enerji talebindeki artış vekaynaklardaki azalma araştırmacıları mevcut sistemlerin geliştirilmesi ve yeni sistemlerin bulunması hususlarındayönlendirmektedir. Bu çalısmada ise, ticari bir ısı pompası su ısıtıcısı çalışılmıştır. Sistemin performansı çesitli ortamkoşulları için MATLAB 7.3 yazılımda hazırlanan bir kod ile gerçekleştirilmiştir. Sistemden toplanan sıcaklık vebasınç verilerine kullanılarak sistemin bütünü ve tüm komponentlerinin ayrı ayrı ekserji yıkımı değerlerihesaplanmıştır. Analiz sonuçları sistemin performansı üzerinde etkin koşulları belirtmiştir. Analiz sonuçları, düşüksıcaklık ve yüksek nem çevre koşulları altında sistem performansının azaldığını göstermiştir.

Hava kaynaklı ısı pompası su ısıtıcısının deneysel analizi

Heating and cooling are one of the fundamental research area for the engineers. Due to increment of theenergy demand and decrement on the sources leads the researchers to develop the recent systems and find out newsystems. In the study, performance of a commercial heat pump water heater is studied. The performance of systemunder various conditions is analyzed with a program prepared in MATLAB 7.3 software by using exergy analysismethod. The exergy destruction of the system is calculated by using collected data for each component of the systemas well as considering the whole states of entire system. The analyses represents effective conditions and componentson the destruction of the performance. It is found that performance of system decreases for low temperature and highhumidity ambient conditions.

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  • Alexis G. K. Exergy analysis of ejector-refrigeration cycle using water as working fluid, Internatıonal Journal Of Energy Research Int. J. Energy Res. 29:95– 105,2005.
  • Bonnet S. , Alaphilippe M. and StouffsP., Energy, exergy and cost analysis of a micro-cogeneration system based on an Ericsson engine, International Journal of Thermal Sciences 44 , 1161–1168, 2005.
  • Chen J. and Schouten J. A., Optımum Performance Characterıstıcs Of An Irreversıble Absorptıon Refrıgeratıon System, Energy Convers.Mgmt. 39, 10 999-1007, 1998.
  • Ceylan I., Aktas M. and Dogan H., Energy and exergy analysis of timber dryer assisted heat pump, Applied Thermal Engineering 27, 216–222, 2007.
  • Choi J., Jeon J. and Kim Y., Cooling performance of a hybrid refrigeration system designed for telecommunication equipment rooms, Applied Thermal Engineering 27, 2026–2032, 2007.
  • Chengqin R, Nianping L. and Guangf T. Principles of exergy analysis in HVAC and evaluation of evaporative cooling schemes, Building and Environment 37, 1045 – 1055, 2002.
  • Coleman H.W. and Steele W.G., Experimentation and Uncertainty Analysis for engineers, Wiley, 1999.
  • Dinçer İ., Refrigeration sytems and applications, Wiley Sons, Chichester, 584,2003.
  • El-Din M.M. S., Performance analysis of heat pumps and refrigerators with variable reservoir temperatures, Energy Conversion & Management, 42, 201-216, 2001.
  • Esen H., Inalli M and Esen M, Pihtili K, Energy and exergy analysis of a ground-coupled heat pump system with two horizontal ground heat exchangers, Building and Environment 42, 3606–3615, 2007.
  • Esen H., Inalli M. and Esen M., A techno-economic comparison of ground-coupled and air-coupled heat pump system for space cooling, Building and Environment 42, 1955-1965, 2007.
  • Feng C., Kai W., Shouguo W., Ziwen X. and Pengcheng S., Investigation of the Heat Pump Water Heater Using Economizer Vapor Injection System and Mixture of R22/R600a, International Journal of Refrigeration, 1-6, 2008.
  • Guo X., Chen Y., Wang W. and Chen C., Experimental Study on Frost Growth and Dynamic Performance of Air Source Heat Pump System, Applied Thermal Engineering, 28 , 2267-2278, 2008.
  • Hepbasli A. and Akdemir O., Energy and exergy analysis of a ground source (geothermal) heat pump system, Energy Conversion and Management 45 737– 753, 2004.
  • Han X.H., Wang Q., Zhu Z.W., Chen G.M, Cycle performance study on R32/R125/R161 as an alternative refrigerant to R407C, Applied Thermal Engineering 27, 2559–2565, 2007.
  • Hussain M.M., Dincer I. and Li X., Energy and exergy analysis of an integrated SOFC power system, CSME 2004 Forum 1080-1090, 2004.
  • Lior N. and Zhang N., Energy, exergy and Second Law Performance criteria, Energy 32, 281-296, 2007.
  • Nikolaidis C. and Probert D., Exergy-method analysis of a two-stage vapour- compression refrigeration-plants performance, Applied Energy 60 241-256,1998.
  • Razani A. , Roberts T. and Flake B. , A thermodynamic model based on exergy flow for analysis and optimization of pulse tube refrigerators, Cryogenics, 47 ,166–173, 2007.
  • Tu Y., Chen L., Sun F. and Wu C., Cooling load and coefficient of performance optimizations for real air- refrigerators, Applied Energy 83, 1289–1306, 2006.
  • Xiaa Z.R., Yea X.M., Lina G.X. and Bruck E., Optimization of the performance characteristics in an irreversible magnetic Ericsson refrigeration cycle, Physica B, 381, 246–255, 2006.
  • Vidala A., Bestb R., Riveroc R. and Cervantesd J., Analysis of a combined power and refrigeration cycle by the exergy method, Energy 31, 3401–3414, 2006.
  • Yao Y., Jiang Y., Deng S. and Ma Z., A Study on the performance of airside heat exchanger under frosting in an air source heat pump water heater/chiller unit, International Journal of Heat and Mass Transfer, 47, 3745-3756, 2004.
  • Yang J. L., Ma T. Y.,Li M. X. and Guan H. Q., Exergy analysis of transcritical carbon dioxide refrigeration cycle with an expander, Energy 30 1162–1175, 2005.
  • Yumrutas R.¸ Kunduz M. and Kanoglu M.,Exergy analysis of vapor compression refrigeration systems, Exergy, an International Journal 2, 266–272, 2002.
  • Zhiqiang L., Xiaolin L., Hanqig W. and Wangming P., 2008, Performance Comparison of Air Source Heat Pump with R407C and R22 under Frosting and Defrosting, Energy Conversion and Management, 49, 232-239, 2008.
Isı Bilimi ve Tekniği Dergisi-Cover
  • ISSN: 1300-3615
  • Yayın Aralığı: Yılda 2 Sayı
  • Başlangıç: 1977
  • Yayıncı: TÜRK ISI BİLİMİ VE TEKNİĞİ DERNEĞİ