A review of different configuration and orientation of greenhouse (GH) were conducted, the use of different types of cover and solar energy transmissivity into the GH were also presented. This study presents, a new configuration of (GH) implementing the use of semi-transparent photovoltaic (STPV) as cover to improve the performance of GH, for agricultural purposes and power generation. In this work, the solar energy intercepted by the GH cover and the extended hangout is calculated. The total energy available for conversion into electric energy was also calculated. The STPV allows photosynthetic active radiation (PAR) to pass into the GH cavity while the higher wavelength is collected and converted into electric energy. The solar energy intercepted by the STPV roof cover is 69335.78 kWh yr-1, the total energy transmitted into the GH cavity is 68842.4544 kW yr-1. The air, plants and outside temperature varies between 27- 44% inside the GH. The electrical energy produced by the STPV roofed cover was calculated to be 21.98 kWh yr-1. The total electric energy produced from the roof covered with 100% STPV is sufficient to control the GH microclimate for conducive plants growth throughout the year.
Home automation is rapidly playing an important role in today’s technologically advancing world. The aim of automation is making life easier for the user by eliminating the rigorous nature of manually operating home appliances like fan, television, light and Home Theater. This paper propose a home automation using Arduino Nano and HC 06 Bluetooth module interfaced together and can wirelessly communicate with an Android or IOS mobile phone that is Bluetooth enabled. Using this system, a fan and a television is wirelessly controlled using Bluetooth terminal software downloaded from google play store. The system was design and tested using two LEDs, a yellow LED and red LED representing the television and the fan respectively. The result shows that home automation can be achieved using Arduino Nano and HC06 Bluetooth module interconnecting other appliances in the household as well.
The use of energy derived from fossil raw materials as conventional primary source of energy has led to environmental pollution climate changes. The need for other alternative sources such as energy derived from wind, solar and biofuel has become necessary. This research investigated the generation of biogas from three types of wastes: Sugarcane bagasse, Cow dung, and chicken droppings wastes using three different biogas plants. Batch operation was carried out and the daily gas produced from each digester was monitored for the retention period of four weeks at the ambient and slurry temperatures. The digesters were charged differently with these wastes in the ratio of 1:3 wastes to distilled water. The ambient temperature ranges within the retention period were 17-29 0 C and a slurry temperature range of 19-32 0 C. The result showed that chicken droppings had the highest cumulative biogas yield of 3228.3cm 3 ; cow dung had 2816.6cm 3 and sugarcane bagasse had the least cumulative production of 681.4cm 3 within digestion period of 30 days. The qualitative test of the generated gas showed that, cow dung has superior quality for biogas production with the highest methane content of 61.3% over the sugarcane bagasse (57.2%) and chicken droppings (47.6%). The bacterial enumeration for chicken droppings was discovered to have highest count of 28.7 x 10 5 cfu/g than cow dung and sugarcane bagasse with 21.2 x 10 5 cfu/g and 2.1 x 10 5 cfu/g respectively. Cow dung was discovered to have the highest total solid content of 84.74% while sugarcane bagasse had the least (8.67%). The utilization of these waste stockscould bean alternative option for energy source and wastes treatment.
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