This study aims to evaluate the effect of fluid flow rate on effectiveness radiator performance by using nanofluid consisting a mixture raw water with nano silica (SiO2) particles. The research was initiated testing material morphologically Scanning Electron Microscope (SEM) aim knowing its microstructure. Next, mix nanoparticles ratio 0.5%, processed magnetic stirrer for 8 hours and precipitat...

abstract experiment was conducted for 8 weeks to determine the reaction (astacus leptodactylus) to interaction energy and salinity. diets containing 3 levels of energy (300,370 and 450 kcal/100g) with a constant protein content of 30% and 2 levels of salinity (fresh water and brackish water (12 ppt) were formulated. tank content 110 liter, each filled with 80 liter water. 5 a.leptodactylus (ave...

Solar energy (SE) is a renewable and clean source. However, the intensity of solar radiation varies due to seasonal changes, weather conditions, night day. Thermal storage (TES) has potential accumulate that can be employed later for various purposes. First all, this study aimed improve system efficiency maintain high water temperature (HWT) longer period by utilizing phase change materials sav...

The novel idea of water Cherenkov calorimeter made of water tanks as the next generation neutrino detector for ν factories and ν beams is investigated. A water tank prototype with a dimension of 1×1×13m is constructed, its performance is studied and compared with a GEANT4 based Monte Carlo simulation. By using measured parameters of the water tank, including the light collection efficiency, att...

energy consumption is very high in greenhouses mainly due to off-season production. the main source of its energy supply is fossil fuels. due to the disadvantages of fossil fuels consumption and preventive laws in the incoming years, study on reducing consumption and replacing a part of them with renewable energy is essential. in this research, a solar heating system, equipped with a concentrat...