Experimental Determination of Water, Water/Ethylene Glycol and TiO₂-SiO₂ Nanofluids mixture with Water/Ethylene Glycol to Three Square Multilayer Absorber Collector on Solar Water Heating System: A Comparative Investigation

Abstract

This paper investigates three square multilayer absorber solar collector in Solar Water Heating System (SWHS) experimentally. The main aim was to study the output temperature of the solar absorber collector based on distilled water (DW), water/ethylene glycol (W/EG) and TiO2-SiO2 nanofluids. An experimental apparatus for testing absorber solar collector was designed and built at Universiti Malaysia Kelantan (Jeli Campus). By using the two-step method, TiO2-SiO2 nanofluids with ratio 30:70 and volume concentration at 1.0%. For W/EG the ratio is 60:40. The effect working fluid was studied experimentally on the output temperature of three square multilayer absorber solar collector in SWHS with Angle of Sunlight (AoS) at 45°, volume flow rate at 3 litres per minute (LPM) and varies Intensity of Light (IoL) at 300, 500 and 700 W/m2. The output temperature is determined through the experimental results by using this apparatus. The result reveals that the output temperature of the solar absorber collector is TiO2- SiO2 nanofluids with 1.0% of volume concentration as a best working fluid at each intensity of light.

Experimental Investigation of Cooling Performance in Automotive Radiator using Al2O3-TiO2-SiO2 Nanofluids

“…The nanofluids thermal conductivity is measured by KD2 Pro thermal properties analyzer from Decagon Devices, Inc., USA. It should be noted that many researchers have used KD2 pro in their thermal conductivity measurements such as [30,[32][33][34][35][36][37][50][51][52]. The thermal conductivity meter is hotwire while KD2 Pro is used to determine the thermal conductivity of this sample.…”