KÜÇÜK-ÖLÇEKLİ BİR PROSES ISI UYGULAMASINA İLİŞKİN PARABOLİK OLUK KOLEKTÖR AĞININ PERFORMANS TESTİ

Year 2018, Volume: 38 Issue: 1, 43 - 53, 30.04.2018

İbrahim Yılmaz Hakan Hayta Recep Yumrutaş Mehmet Söylemez

Abstract

Bu çalışma, seri bağlanmış üç modülden oluşan bir parabolik oluk güneş kolektör (POGK) ağının performans
testinin deneysel olarak incelenmesini sunmaktadır. Bu POGK ağının ısıl performansının ASHRAE 93-1986
standardına uygun olarak test edilmesi için yeni bir test düzeneği önerilmiştir. Deneysel testler, Gaziantep'te bulutsuz
gökyüzü koşulları altında uygulanmış ve birkaç gün boyunca izlenmiştir. Performans analizlerinde, direk ışınım,
kolektör giriş sıcaklığı, ortam koşulları ve çalışma akışkanının kütlesel akış debisinin etkileri araştırılmıştır. POGK
ağının daimi-durum ve dinamik testleri gerçekleştirilmiştir. Verimlilik testleri, termal yağ kullanılarak daimi koşullar
altında 50 °C ila 200 °C sıcaklık aralığı ve 0,1 kg/s ila 0,5 kg/s kütlesel debi aralığı için gerçekleştirilmiştir. Ayrıca,
deney sonuçları daha önce yapılan teorik çalışma sonuçlarıyla karşılaştırılmış ve iyi tutarlılık göstermiştir.

Keywords

Güneş enerjisi, Parabolik oluk kolektör, Optik analiz, Performans testi

PERFORMANCE TESTING OF A PARABOLIC TROUGH COLLECTOR ARRAY FOR A SMALL-SCALE PROCESS HEAT APPLICATION

Abstract

This study presents the experimental investigation on performance testing of a parabolic trough solar
collector (PTSC) array consisting of three modules connected in series. A new test setup has been proposed to test the
thermal performance of this PTSC array in compliance with ASHRAE 93-1986 standard. The experimental tests have
been carried out and monitored in a number of days under cloudless sky conditions in Gaziantep. In the performance
analyses, the effects of beam radiation, collector inlet temperature, ambient conditions, and the variation in mass flow
rate of the working fluid were investigated. The steady-state and dynamic tests of the PTSC array were performed. The
efficiency tests were conducted with thermal oil for the temperature range from 50 °C to 200 °C, and mass flow rate of
0.1 kg/s to 0.5 kg/s under steady conditions. Additionally, the experimental results were compared with the results of
the theoretical study made previously and gave good coherency.

Keywords

Solar energy, Parabolic trough collector, Optical analysis, Performance testing

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