In this paper, magnesium hydride was used to react with water to produce the hydrogen gas. Magnesium hydride is the chemical compound MgH2, which contains 7.66% by weight of hydrogen. Although the concept of reacting chemical hydride with water to produce hydrogen is not new, there have been a number of recent published papers which might be employed to power fuel cell devices for portable applications. Under the room temperature, the hydrolytic reaction between magnesium hydride and water to form a thin-layer of magnesium hydroxide on the outer surface impedes water from coming into direct contact with the magnesium hydride. The key to continual removal of the coherent magnesium hydroxide layer by adding a citric acid has the following conclusions. First, using this approach can reach the 6.4wt% of hydrogen. Finally, the cost of producing hydrogen from magnesium hydride-water hydrogen generation approach would cost approximately $15 per kg hydrogen.

In this paper, magnesium hydride was used to react with water using a new design of control strategy to produce maximized on-demand hydrogen generation from the hydrolysis reaction. Magnesium hydride is the chemical compound MgH2, which contains 7.66% by weight of hydrogen and as a potential hydrogen source. Although the concept of reacting chemical hydride with water to produce hydrogen is not new, there have been a number of recent published papers which might be employed as on site generation of hydrogen for fuel cell applications. Under room temperature, the hydrolytic reaction between magnesium hydride and water to form a thin-layer of magnesium hydroxide on the outer surface impedes water from coming into direct contact with the magnesium hydride. The key to continual removal of this coherent magnesium hydroxide layer can induce the reaction of magnesium hydride with water near room temperature by the addition of citric acids. These additions act to disrupt the magnesium hydroxide layer on the magnesium hydride. This concept of using the magnesium hydride reaction with water to produce hydrogen has the following conclusions. This study presents a maximized on-demand hydrogen gas generator capable of producing hydrogen at an almost-constant H2 rate, which using this approach can reach the 6.4% by weight of hydrogen. In addition, based on the kinetics of magnesium hydride-water reaction, it does not need any noble-metals catalysts to meet the minimum hydrogen flow rate for fuel cell power systems. Finally, the cost of producing hydrogen from magnesium hydride-water approach would cost approximately $15 per kg hydrogen.

AbstrakPada makalah ini diusulkan sepeda energi surya yang dilengkapi jaringan sensor nirkabel (JSN)

Both the fuel cell and battery have timely dynamic response to the step-profile load input. The current overshoot followed by a voltage undershoot behavior happen the step-up load, particularly. These phenomena are closely related to mass transfer mechanisms such as the water/gas transport by the redistribution of membrane water content in the fuel cell and the charge double-layer effect in the battery. When the load demand is beyond the rated power of the fuel cell system, the battery immediately powers to the load with a transient discharging current especially in the step-profile load power. This study presents a new control strategy for hybrid fuel cell-battery power sources with transient and overshoot considered. The results show that the proposed hybrid fuel cell-battery power source not only acting as a power stabilizer but also dynamically satisfying the step-profile load demand.

In this paper, an extended-range hybrid solar-cell and battery powered bicycle through a wireless sensor network (WSN) for far-end network monitoring solar energy to charge two lead-acid batteries and the effectiveness analysis is proposed. In order to achieve this goal, the key component of ZigBee used for a far-end wireless network supervisory system is setup. By adding a small-powered solar panel to charge two batteries when idle or low power periods, an extended-range hybrid powered bicycle allows its driving distance to be increased further. The alternative with this solution, though, are weight and cost. Experimental results prove that our prototype, the solar energy powered bicycle, can manage the solar energy for charging two lead-acid batteries pack to extend its range. As a result, the user by the wireless network in parking period knows the data on the amount of immediate solar radiation, the degree of illumination, the ambient temperature, and electrical energy storage capacity information by the internet interface.