Performance evaluation of the tubular solar collector with and without the reflector by using nanoxidesaluminum

This paper presents an experimental study of the performance of solar Nano fluid heating system by using Al2O3 Nano liquids as working liquid and also the effect of nanoparticles on the solar Nano liquid heating system. To obtain a higher thermal conductivity of the liquid, the efficiency of the solar collector can be improved as compared to that of distilled water. The approach used in this study to improve heat transfer and pressure drop by using spirally coiled tube heat exchange in solar apparatus and Nano fluid instead of base liquid (distilled water).one nanoparticles are used for exploration with different concentrations (i.e. 1, 3 and 5% by volume), the volume flow rate (12, 24, 36 L / min) and the important working fluid used to be distilled water. The effect, of Al2O3 with distilled water as the base fluid on the effectivity of the photo voltaic collector for unique extent glide fees (12, 24, 36 L / min) used to be as soon as investigated.The experimental penalties showed that the attention at (1% volume) tested non-significant effects in contrast to distilled water, whilst the effects indicated that the cocentration of 5% vol has a widespread have an impact on the photo voltaic collector performance. Nano fluid sorts are a predominant difficulty in enhancing heats change and enhancing the vacuum tube overall performance of the photo voltaic collector. A Clear extend in efficiency and thermal obtain used to be observed the use of picture voltaic reflectors can be viewed as a primer for accumulating solar power at some stage in the heating season that can make contributions to image voltaic electrical energy ranging from (40% to 80%(of the total solar radiation incident, due to the fact the reflector concentrates both the diffuse and direct radiation of the sun toward the collector.