BUHAR SIKIŞTIRMALI SOĞUTMA SİSTEMLERİNDE AŞIRI SOĞUTMA VE AŞIRI KIZDIRMA ETKİSİNİN ISIL EKONOMİK AÇIDAN İNCELENMESİ
Öz
Bu çalışmada, teorik bir buhar sıkıştırmalı soğutma sisteminin aşırı kızdırma ve aşırı soğutma ısı değiştiricilerinin, farklı iki soğutucu akışkan için ısıl ekonomik yönden analizi yapılmış ve sistemin en iyi çalışma şartları belirlenmiştir. Isıl ekonomik en iyileme metodu olarak, yapısal bağ katsayıları metodu
kullanılmıştır. Analizler, R22 soğutucu akışkanı ve buna alternatif olarak R407c soğutucu akışkanı için yapılmıştır. Sonuç olarak, aşırı kızdırma ve aşırı soğutma ısı değiştiricilerinin ekonomik ve çalışma performansı
açısından en iyi alanları tespit edilmiştir. Bir soğutma sistemi tasarımında, ısı değiştiricisi alanının azalması, sistem maliyetini düşürür. Fakat ısı değiştiricisi alanının düşürülmesi sistem verimini de düşürmektedir. Yapılan çalışmada, ısı değiştiricisi alanının, ve sistem veriminin en iyi olduğu şartlar belirlenmiştir.
Anahtar Kelimeler
Isıl ekonomik en iyileme yapısal bağ katsayıları aşırı kızdırma aşırı soğutma.
Kaynakça
- Çengel, A.Y., Boles, A.M, Thermodynamics:
- An Engineering Approach, McGraw-Hill, New
- York, A.B.D., 1994.
- Ashrae, Fundamentals, American Society of
- Heating Refrigerating and Air Conditioning
- Engineers Inc., Atlanta, A.B.D., 1993.
- Dossat, R.J., Principles of Refrigeration,
- Prentice Hall, New Jersey, A.B.D., 1997.
- Bejan, A., Advanced Engineering
- Thermodynamics, John Wiley and Sons, New
- York, A.B.D., 1997.
- Kotas, T.J., The Exergy Method of Thermal
- Plant Analysis, Butter-Worths, London,
- England, 1985.
- Koçoğlu, A., Thermo-economic Optimization
- of a Single State Heat Pump, Master Thesis,
- M.E.T.U. The Graduate School of Natural and
- Applied Sciences, 1993.
- Chen, J., “Thermodynamic and Thermoeconomic
- Analysis of an Irreversible Combined Carnot
- Heat Engine System”, International Journal of
- Energy Research, Cilt 25, 413-426, 2001.
- Dingeç, H., Thermoeconomic Optimization of
- Simple Refrigerators, Master Thesis, M.E.T.U.
- The Graduate School of Natural and Applied
- Sciences, 1996.
- Sciubba, E., “Beyond Thermoeconomics? The
- Concept of Extended Exergy Accounting and Its
- Application to the Analysis and Design of
- Thermal Systems”, Exergy, An International
- Journal, Cilt 1, No 2, 68-84, 2001.
- Wall, G., “Thermoeconomic Optimization of a
- Heat Pump System”, Physical Resource Theory
- Group, Report No: 85-5, Göteborg. Sweden,
- -
- Zhang, G.Q., Wang, L., Liu, L., Wang, Z.,
- “Thermoeconomic Optimization of Small Size
- Central Air Conditioner”, Applied Thermal
- Engineering, Cilt 24, No 4, 471-485, 2004.
- Al-Otaibi, A.D., Dincer, I., Kalyon, M.,
- “Thermoeconomic Optimization of Vapor-
- Compression Refrigeration Systems”, Int.
- Comm. Heat Mass Transfer, Cilt 31, No 1, 95-
- , 2004.
- D’Accadia, M.D., Fichera, A., Sasso, M., Vidiri,
- M., “Determining the Optimal Configuration of a
- Heat Exchanger (With a Two Phase Refrigerant)
- Using Exergoeconomics”, Applied Energy, Cilt
- , No 3, 191-203, 2002.
- D’accadia, M.D., Sasso M., “Exergetic Cost and
- Exergoeconomic Evaluation of Vapour-
- Compression Heat Pumps”, Energy, Cilt 23, No
- , 937-942, 1998.
- D’Accadia, M.D., Rossi, F., “Thermoeconomic
- Optimization of a Refrigeration Plant”, Int. J.
- Refrig., Cilt 21, No 1, 42-54, 1998.
- Chen, Q., Prasad, R.C. “Simulation of a Vapour-
- Compression Refrigeration Cycle using HFC
- a and CFC12”, Int. Comm. Heat Mass
- Transfer, 26(4), 513-521, 1999.
- Yumrutaş, R., Kunduz, M., Kanoğlu, M. “Exergy
- Analysis of Vapor Compression Refrigeration
- Systems”, Exergy, an International Journal,
- (4), 266-274, 2002.
- Kizilkan, Ö. “Examination of Superheating and
- Subcooling Effects in Refrigeration Systems with
- Compressor in Terms of Thermoeconomics for
- Different Refrigerants”, S.D.Ü., The Graduate
- School of Natural and Applied Sciences,
- Master Thesis, 117 p, Isparta, 2004.
- Birimfiyat, Oska Yazılım,
- http://www.birimfiyat.com.
INVESTIGATION OF SUBCOOLING AND SUPERHEATING EFFECTS IN REFRIGERATION SYSTEMS IN TERMS OF THERMOECONOMICS
Öz
In this study, subcooling and superheating heat exchangers of vapor compressed refrigeration system were
investigated in terms of thermoeconomics for two different refrigerants and optimum working conditions were
determined. Coefficient of structural bonds was used as thermoeconomic optimization method. Analyses were
carried out for refrigerant R22 and alternative of it, refrigerant R407c. As a result, optimum areas of subcooling
and superheating heat exchangers are determined in relation to economics and working performance. For a
refrigeration system design, decrease of heat exchanger area, affects the system cost as a decrease. However,
decrease of heat exchanger area, causes a decrease in efficiency value of system. In the present study, optimum
conditions for the optimum heat exchanger area and optimum system efficiency are determined.
Anahtar Kelimeler
Thermoeconomic optimization coefficient of structural bonds subcooling superheating
Kaynakça
- Çengel, A.Y., Boles, A.M, Thermodynamics:
- An Engineering Approach, McGraw-Hill, New
- York, A.B.D., 1994.
- Ashrae, Fundamentals, American Society of
- Heating Refrigerating and Air Conditioning
- Engineers Inc., Atlanta, A.B.D., 1993.
- Dossat, R.J., Principles of Refrigeration,
- Prentice Hall, New Jersey, A.B.D., 1997.
- Bejan, A., Advanced Engineering
- Thermodynamics, John Wiley and Sons, New
- York, A.B.D., 1997.
- Kotas, T.J., The Exergy Method of Thermal
- Plant Analysis, Butter-Worths, London,
- England, 1985.
- Koçoğlu, A., Thermo-economic Optimization
- of a Single State Heat Pump, Master Thesis,
- M.E.T.U. The Graduate School of Natural and
- Applied Sciences, 1993.
- Chen, J., “Thermodynamic and Thermoeconomic
- Analysis of an Irreversible Combined Carnot
- Heat Engine System”, International Journal of
- Energy Research, Cilt 25, 413-426, 2001.
- Dingeç, H., Thermoeconomic Optimization of
- Simple Refrigerators, Master Thesis, M.E.T.U.
- The Graduate School of Natural and Applied
- Sciences, 1996.
- Sciubba, E., “Beyond Thermoeconomics? The
- Concept of Extended Exergy Accounting and Its
- Application to the Analysis and Design of
- Thermal Systems”, Exergy, An International
- Journal, Cilt 1, No 2, 68-84, 2001.
- Wall, G., “Thermoeconomic Optimization of a
- Heat Pump System”, Physical Resource Theory
- Group, Report No: 85-5, Göteborg. Sweden,
- -
- Zhang, G.Q., Wang, L., Liu, L., Wang, Z.,
- “Thermoeconomic Optimization of Small Size
- Central Air Conditioner”, Applied Thermal
- Engineering, Cilt 24, No 4, 471-485, 2004.
- Al-Otaibi, A.D., Dincer, I., Kalyon, M.,
- “Thermoeconomic Optimization of Vapor-
- Compression Refrigeration Systems”, Int.
- Comm. Heat Mass Transfer, Cilt 31, No 1, 95-
- , 2004.
- D’Accadia, M.D., Fichera, A., Sasso, M., Vidiri,
- M., “Determining the Optimal Configuration of a
- Heat Exchanger (With a Two Phase Refrigerant)
- Using Exergoeconomics”, Applied Energy, Cilt
- , No 3, 191-203, 2002.
- D’accadia, M.D., Sasso M., “Exergetic Cost and
- Exergoeconomic Evaluation of Vapour-
- Compression Heat Pumps”, Energy, Cilt 23, No
- , 937-942, 1998.
- D’Accadia, M.D., Rossi, F., “Thermoeconomic
- Optimization of a Refrigeration Plant”, Int. J.
- Refrig., Cilt 21, No 1, 42-54, 1998.
- Chen, Q., Prasad, R.C. “Simulation of a Vapour-
- Compression Refrigeration Cycle using HFC
- a and CFC12”, Int. Comm. Heat Mass
- Transfer, 26(4), 513-521, 1999.
- Yumrutaş, R., Kunduz, M., Kanoğlu, M. “Exergy
- Analysis of Vapor Compression Refrigeration
- Systems”, Exergy, an International Journal,
- (4), 266-274, 2002.
- Kizilkan, Ö. “Examination of Superheating and
- Subcooling Effects in Refrigeration Systems with
- Compressor in Terms of Thermoeconomics for
- Different Refrigerants”, S.D.Ü., The Graduate
- School of Natural and Applied Sciences,
- Master Thesis, 117 p, Isparta, 2004.
- Birimfiyat, Oska Yazılım,
- http://www.birimfiyat.com.
Ayrıntılar
| Birincil Dil | Türkçe |
|---|---|
| Konular | Mimarlık |
| Bölüm | Makaleler |
| Yazarlar | |
| Yayımlanma Tarihi | 1 Mart 2013 |
| Gönderilme Tarihi | 4 Haziran 2014 |
| Yayımlandığı Sayı | Yıl 2006 Cilt: 21 Sayı: 2 |