Öz
Bu çalışmada, Mersin iline ait saatlik atmosfer hava sıcaklığı ve güneş ışınım verileri kullanılarak güneş enerji destekli absorpsiyonlu soğutma (SPAR) sisteminin performans analizi yapılmıştır. Güneş enerji destekli absorpsiyonlu soğutma sisteminin tasarımında soğutucu-soğurgan çifti olarak amonyak-su (NH3-H2O) ve vakum tüplü güneş kollektörü tercih edilmiştir. İlk olarak, seçilen binanın saatlik soğutma yükü hesaplanmıştır. Sonra, bu soğutma yüküne göre sistemin termodinamik analizi yapılmış ve soğutulacak bölge için gerekli güneş kollektör alanı hesaplanmıştır. Elde edilen sonuçlara göre maksimum etkinlik katsayısı, (COP) Mayıs ayında, minimum etkinlik katsayısı, (COP) ise Temmuz ve Ağustos aylarında elde edilmiştir. Birim alana gelen maksimum güneş ışınım değeri, 23 Haziran günü saat 13.00’de 0,878 kW/m2 olduğunda, COP değeri 0,434 olarak hesaplanmıştır. Sonuç olarak, 30 m2’lik soğutulacak bölge için optimum güneş kollektör alanı 50 m2 olarak hesaplanmıştır.
Anahtar Kelimeler
Absorpsiyonlu soğutma sistemi Amonyak-su Vakum tüplü güneş kollektörü Güneş ışınımı Isıl enerji
Kaynakça
- 1. Gupta, B.L., Bhatnagar, M., Mathur, J., 2014. Optimum Sizing of PV Panel, Battery Capacity and Insulation Thickness for a Photovoltaic Operated Domestic Refrigerator. Sustainable Energy Technologies and Assessments, 7:55-67.
- 2. REN21, 2014. Renewable Energy Policy Network for the 21st Century, Renewables 2014 Global Status Report, http://www.ren21.net.
- 3. Pires, L., Silva, P.D., Gomes, J.P.C., 2013. Experimental Study of an Innovative Element for Passive Cooling of Buildings. Sustainable Energy Technologies and Assessments, 4:29-35.
- 4. Ozgoren, M., Bilgili, M., Babayigit, O., 2012. Hourly Performance Prediction of Ammonia-Water Solar Absorption Refrigeration. Applied Thermal Engineering, 40:80-90.
- 5. Babayigit, O., Aksoy, M.H., Ozgoren, M., Solmaz, O., 2013. Investigation of Absorption Cooling Application Powered by Solar Energy in the South Coast Region of Turkey. EPJ Web of Conferences, 45:01100.
- 6. Ali, A.H.H., Noeres, P., Pollerberg, C., 2008. Performance Assessment of an Integrated Free Cooling and Solar Powered Single-Effect Lithium Bromide-Water Absorption Chiller. Solar Energy, 82:1021-1030.
- 7. Ramesh, R., Murugesan, S.N., Narendran, C., Saravanan, R., 2015. Cascaded Energy Plant Using Ammonia Absorption Refrigeration System for Combined Cooling and Heating Applications. Science and Technology for the Built Environment, 21:290–299.
- 8. Du, S., Wang, R.Z., Xia, Z.Z., 2015. Graphical Analysis on Internal Heat Recovery of a Single Stage Ammonia-Water Absorption Refrigeration System. Energy, 80:687-694.
- 9. Lecuona, A., Ventas, R., Venegas, M., Zacarias, A., Salgado, R., 2009. Optimum Hot Water Temperature for Absorption Solar Cooling. Solar Energy, 83,1806-1814.
- 10. Cimsit, C., Ozturk, I.T., Kincay, O., 2015. Thermoeconomic Optimization of LiBr/H2O-R134a Compression-Absorption Cascade Refrigeration Cycle. Applied Thermal Engineering, 76:105-115.
Öz
In this study, performance analysis of solar-powered absorption refrigeration (SPAR) system is evaluated using hourly atmospheric air temperature and solar radiation data in Mersin city. Ammonia-water (NH3-H2O) as refrigerant-absorbent pair and evacuated tube solar collector are selected for the design of the SPAR system. First, hourly cooling loads of the selected building are calculated. Then, thermodynamic analysis of the SPAR system is conducted according to this cooling load and required solar collector area is calculated for the air-conditioned space. Obtained results show that the maximum coefficient of performance (COP) value is observed in May, while the lowest value is seen in July and August. When the maximum solar radiation rate is observed to be 0,878kW/m2 on 23 June at 01:00 p.m., the COP is calculated as 0,434. Finally, the optimum collector area is determined to be 50 m2 for air-conditioned space area of 30 m2.
Anahtar Kelimeler
Absorption refrigeration system Ammonia-water Evacuated tube solar collector Solar radiation Thermal energy
Kaynakça
- 1. Gupta, B.L., Bhatnagar, M., Mathur, J., 2014. Optimum Sizing of PV Panel, Battery Capacity and Insulation Thickness for a Photovoltaic Operated Domestic Refrigerator. Sustainable Energy Technologies and Assessments, 7:55-67.
- 2. REN21, 2014. Renewable Energy Policy Network for the 21st Century, Renewables 2014 Global Status Report, http://www.ren21.net.
- 3. Pires, L., Silva, P.D., Gomes, J.P.C., 2013. Experimental Study of an Innovative Element for Passive Cooling of Buildings. Sustainable Energy Technologies and Assessments, 4:29-35.
- 4. Ozgoren, M., Bilgili, M., Babayigit, O., 2012. Hourly Performance Prediction of Ammonia-Water Solar Absorption Refrigeration. Applied Thermal Engineering, 40:80-90.
- 5. Babayigit, O., Aksoy, M.H., Ozgoren, M., Solmaz, O., 2013. Investigation of Absorption Cooling Application Powered by Solar Energy in the South Coast Region of Turkey. EPJ Web of Conferences, 45:01100.
- 6. Ali, A.H.H., Noeres, P., Pollerberg, C., 2008. Performance Assessment of an Integrated Free Cooling and Solar Powered Single-Effect Lithium Bromide-Water Absorption Chiller. Solar Energy, 82:1021-1030.
- 7. Ramesh, R., Murugesan, S.N., Narendran, C., Saravanan, R., 2015. Cascaded Energy Plant Using Ammonia Absorption Refrigeration System for Combined Cooling and Heating Applications. Science and Technology for the Built Environment, 21:290–299.
- 8. Du, S., Wang, R.Z., Xia, Z.Z., 2015. Graphical Analysis on Internal Heat Recovery of a Single Stage Ammonia-Water Absorption Refrigeration System. Energy, 80:687-694.
- 9. Lecuona, A., Ventas, R., Venegas, M., Zacarias, A., Salgado, R., 2009. Optimum Hot Water Temperature for Absorption Solar Cooling. Solar Energy, 83,1806-1814.
- 10. Cimsit, C., Ozturk, I.T., Kincay, O., 2015. Thermoeconomic Optimization of LiBr/H2O-R134a Compression-Absorption Cascade Refrigeration Cycle. Applied Thermal Engineering, 76:105-115.
Ayrıntılar
| Bölüm | Makaleler |
|---|---|
| Yazarlar | |
| Yayımlanma Tarihi | 15 Mart 2017 |
| Yayımlandığı Sayı | Yıl 2017 Cilt: 32 Sayı: 1 |