Yağ Soğutmalı Kondenser Tasarımının Termostat Kontrollü Bir Soğutucuya Uyarlanması ve Performans Deneylerinin İncelenmesi
Abstract
Soğutma ve soğutma sistemlerine olan talebin hızla
artığı günümüzde soğutma sistemlerinden birçok alanda yararlanılmaktadır.
Bununla birlikte günümüzde artan enerji ihtiyacına bağlı olarak soğutma
sistemlerinden verimli bir şekilde yararlanmak ve enerji tasarrufu sağlamak
oldukça önem kazanmıştır. Ev tipi soğutucularda sistemin verimini artırmanın en
önemli yöntemlerinden biri de kondenser kapasitesinin artırılmasıdır. Bu
çalışmada ilk olarak doğal taşınımlı telli-boru tip kondenserin performans analizi
yapılmıştır. Daha sonra kondenser bir tankın içine yerleştirilerek tank
içeresine sırasıyla 2.5, 5, 7.5 ve 10 L miktarlarında bitkisel yağ eritilip
doldurulmuş ve sistemin performans analizi yapılmıştır. Çalışmada ev tipi
soğutucu 2 saat boyunca kesikli olarak çalıştırılmıştır. Basınç ve sıcaklık
ölçümleri 5’er dakika aralıklarla kaydedilmiştir. Yağ soğutmalı kondenserde yağ
miktarı arttıkça kondenser performansının arttığı ve enerji tüketiminin
azaldığı tespit edilmiştir. Hava soğutmalı kondenser kullanarak yüksüz
çalıştırıldığında COP değeri 2.23 ve enerji tüketimi 90 Wh iken, 10 L bitkisel
yağ yüklü yağ soğutmalı kondenserin COP değeri 2.81 ‘e çıkmış ve enerji
tüketimi ise 35 Wh’e inmiştir. Hava soğutmalı kondenser kullanarak yüklü
çalıştırıldığında COP değeri 2.14 ve enerji tüketimi 95 Wh iken, yağ soğutmalı
kondenserin COP değeri 2.84 ‘e çıkmış ve enerji tüketimi ise 40 Wh’e inmiştir.
References
- [1] Kadayıfçı, M.C., “Bacalı doğal taşınımlı yoğuşturucunun ev tipi soğutucuların performansına etkisi” Karabük üniversitesi Fen Bilimleri Enstitüsü, (2011).
- [2] Clark R., A., Smith R.,N., Jensen M.,K., “An experimental study of waste heat recovery from a residential refrigerator” Energy Conversion Engineering Conference, Washington, 1887-1892, (1996). [3] Wen-Long C., Bao-Jun M., Yi-Ning L., Yong-Hua H., Xu-Dong Y., A., “Novel household refrigerator with shape-stabilized PCM (Phase Change Material) heat storage condensers: An experimental investigation”, Energy, 36: 5797-5804, (2011).
- [4] Akdoğan A . “Bir soğutma sistemindeki kondenser kapasitesinin değiştirilmesinin enerji ve ekserji analizleri ile incelenmesi.’’ Zonguldak Karaelmas Üniversitesi Fen Bilimleri Enstitüsü, (2007).
- [5] Stinson G.,E., Stuman C.,J., Warburton D.,J., “A dairy refrigeration heat recovery unit and its effects on refrigeration operation”, Journal of Agriculture Engineering , 36: 275–85, (1987).
- [6] Alex H.,W., Jones J.,W., “Analytical model of a residential de super heater” Applied Energy, 57:271-185, (1997).
- [7] Goto M., Ohuchinda S., Agata T., “A energy saving methodology for air-conditioning systems – performance of an additional condenser and its application to a hot water supply”, In proceedings of international symposium on ectopic science, ISETS07, Nogaya, 255-259, (2007).
- [8] Sapali S.,N., Pise S.,M., Pise A.,T., Ghewade D.,V., “Investigations of waste heat recovery from bulk milk cooler”, Case Studies in Thermal Engineering, 4: 136-143, (2014).
- [9] Patil, P. A. “Performance analysıs of hfc-404a vapour compressıon refrıgeratıon system usıng shell and u-tube smooth and mıcro-fın tube condensers”, Experımental Heat Transfer, 25: 77-91, (2012).
- [10] Tissot J., Boulet P., Trinquet F., Fournaison L., Lejeune M., Liaudet F., “Improved energy performance of a refrigerating machine using water spray upstream of the condenser” Internatıonal Journal Of Refrıgeratıon-Revue Internatıonale Du Froıd, 38 : 93-105 (2014).
- [11] Hajidavalloo, E.; Eghtedari, H. “Performance improvement of air-cooled refrigeration system by using evaporatively cooled air condenser” Internatıonal Journal of Refrıgeratıon-Revue Internatıonale Du Froıd, 33: 982-988 (2010).
- [12] Genceli O. F., “Ölçme Tekniği”, Birsen yayınevi, İstanbul Türkiye 48-69 (1995).
- [13] http://www.makel.com.tr/Download/files/sayac_genel_ozellik.pdf
- [14] https://tr.climate-data.org/location/264/
- [15] Hanson A. R., Urriola P. E., Wang L., Jonston L, J., Chen C., Shurson G. C., “Dietary peroxidized maize oil affects the growth performanceand antioxidant status of nursery pigs”, Animal Feed Science and Technology, 216: 251-261 (2016).
- [16] Çengel A. Y., Boles M. A., “Termodinamik Mühendislik Yaklaşımıyla” Güven Bilimsel yayınevi, Türkiye (2008).
- [17] Gedik E. “Experimental investigation of the thermal performance of a two-phase closed thermosyphon at different operating conditions”, Energy and Buildings, 127: 1096-1107, (2016).
Adaptation of Oil Cooled Condenser Design to A Thermostat Controlled Cooler and Performance Analysis
Abstract
Today,
the need for cooling and cooling technologies are growing fast and they are
used in many areas. On the other hand, saving energy and using the cooling
systems more efficiently are major concerns in today’s growing energy needs.
Increasing the condenser capacity is one of the way of improving household
refrigerator efficiency. In this study, first the performance test of a natural
circulation wire-tube condenser was tested. Then the condenser was placed into
a tank and 2.5, 5, 7.5 and 10 liters of melted vegetable oil was filled into
the tank. Performance tests of the system were performed at both loaded and
unloaded conditions as intermittent operation. A domestic refrigerator was run
for 2 hours as intermittent operation for each scenario. All measurements
(pressure and temperature) were taken at 5 minutes intervals.
Experimental results showed that as the amount of oil in the oil-cooled
condenser increases, the condenser capacity and cooling capacity also increase,
and also the energy consumption of the system decreases. The energy consumption in unloaded operation
of air-cooled condenser for 1 hour was measured as 90 Wh, and it decreased to
35 Wh for oil-cooled condenser filled with 10 liters of oil. The COP of the
system in unloaded operation of air-cooled condenser was calculated as 2.23 and
the energy consumption was about 90Wh. However, The COP of the system in loaded
operation of oil-cooled condenser was increased to 2.81 and the energy
consumption was decreased to 35Wh. On the other hand, the COP of the system in
loaded operation of air-cooled condenser was measured as 2.14 and the energy
consumption of it was about 95Wh. But, the COP of the oil-cooled condenser in
loaded operation raised to 2.84 and the energy consumption reduced to 40Wh.
References
- [1] Kadayıfçı, M.C., “Bacalı doğal taşınımlı yoğuşturucunun ev tipi soğutucuların performansına etkisi” Karabük üniversitesi Fen Bilimleri Enstitüsü, (2011).
- [2] Clark R., A., Smith R.,N., Jensen M.,K., “An experimental study of waste heat recovery from a residential refrigerator” Energy Conversion Engineering Conference, Washington, 1887-1892, (1996). [3] Wen-Long C., Bao-Jun M., Yi-Ning L., Yong-Hua H., Xu-Dong Y., A., “Novel household refrigerator with shape-stabilized PCM (Phase Change Material) heat storage condensers: An experimental investigation”, Energy, 36: 5797-5804, (2011).
- [4] Akdoğan A . “Bir soğutma sistemindeki kondenser kapasitesinin değiştirilmesinin enerji ve ekserji analizleri ile incelenmesi.’’ Zonguldak Karaelmas Üniversitesi Fen Bilimleri Enstitüsü, (2007).
- [5] Stinson G.,E., Stuman C.,J., Warburton D.,J., “A dairy refrigeration heat recovery unit and its effects on refrigeration operation”, Journal of Agriculture Engineering , 36: 275–85, (1987).
- [6] Alex H.,W., Jones J.,W., “Analytical model of a residential de super heater” Applied Energy, 57:271-185, (1997).
- [7] Goto M., Ohuchinda S., Agata T., “A energy saving methodology for air-conditioning systems – performance of an additional condenser and its application to a hot water supply”, In proceedings of international symposium on ectopic science, ISETS07, Nogaya, 255-259, (2007).
- [8] Sapali S.,N., Pise S.,M., Pise A.,T., Ghewade D.,V., “Investigations of waste heat recovery from bulk milk cooler”, Case Studies in Thermal Engineering, 4: 136-143, (2014).
- [9] Patil, P. A. “Performance analysıs of hfc-404a vapour compressıon refrıgeratıon system usıng shell and u-tube smooth and mıcro-fın tube condensers”, Experımental Heat Transfer, 25: 77-91, (2012).
- [10] Tissot J., Boulet P., Trinquet F., Fournaison L., Lejeune M., Liaudet F., “Improved energy performance of a refrigerating machine using water spray upstream of the condenser” Internatıonal Journal Of Refrıgeratıon-Revue Internatıonale Du Froıd, 38 : 93-105 (2014).
- [11] Hajidavalloo, E.; Eghtedari, H. “Performance improvement of air-cooled refrigeration system by using evaporatively cooled air condenser” Internatıonal Journal of Refrıgeratıon-Revue Internatıonale Du Froıd, 33: 982-988 (2010).
- [12] Genceli O. F., “Ölçme Tekniği”, Birsen yayınevi, İstanbul Türkiye 48-69 (1995).
- [13] http://www.makel.com.tr/Download/files/sayac_genel_ozellik.pdf
- [14] https://tr.climate-data.org/location/264/
- [15] Hanson A. R., Urriola P. E., Wang L., Jonston L, J., Chen C., Shurson G. C., “Dietary peroxidized maize oil affects the growth performanceand antioxidant status of nursery pigs”, Animal Feed Science and Technology, 216: 251-261 (2016).
- [16] Çengel A. Y., Boles M. A., “Termodinamik Mühendislik Yaklaşımıyla” Güven Bilimsel yayınevi, Türkiye (2008).
- [17] Gedik E. “Experimental investigation of the thermal performance of a two-phase closed thermosyphon at different operating conditions”, Energy and Buildings, 127: 1096-1107, (2016).
Details
| Primary Language | Turkish |
|---|---|
| Subjects | Engineering |
| Journal Section | Research Article |
| Authors | |
| Publication Date | June 1, 2019 |
| Submission Date | March 20, 2018 |
| Published in Issue | Year 2019 Volume: 22 Issue: 2 |
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