曝気装置による水質改善のための太陽エネルギーの利用

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The effective utilization of rainwater and the jointed solar movie source attract much attention nowadays. Especially the sustainable and clean characters of these energy and resources are estimated much with the hope of the decrease of the power plant cost. This paper investigate the independent plant grow system with these resources and energy. The system supplies and maintains the effective Dissolved Oxygen in the water tank of mini-tomato water cultivation system and tube irrigation system by solar power of Direct Current and an aeration blower system. The solar cell-set has 4 sheets and each sheet has the ability of 48 W of power plant. The dimension of this water cultivation has 3 places and each size is 90cm × 90cm. The valve is automatically operated by timer so that 3 l /min of water is supplied for 10 minutes in an hour. And solar pump raise up the water from suction sump to discharge one. And aeration blower send oxygen to culture bed through pine in the tank. 1 bed has 3 l /min × 10min=30 l and 1 cycle is 70min, so totally 30 l × 21=630 l is supplied. Considering that the total 3 beds have 630 × 3 beds=1,890 l = 1.89m^3, the scale of suction and discharge sumps is 1.5m × 1.5m × 1.0m=2.25m^3 > 1.89m^3. Considering with the ability of pumping in the most severe conditions as in winter season that has the shortest hours of sunshine as 3 hours, and with the 2 meters of total pump head, the total discharge is 13 l /min, So, the ability is calculated as 13 l /min, ×60min × 3hr=2.34m^3, This shows the sufficient condition for the needed water volume of 1.89m^3. Thus these systems showed much effect that raise up the quality and quantity of grow plant with the sufficient maintenance of DO density for water cultivation.

曝気装置による水質改善のための太陽エネルギーの利用

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