Polymer Electrolyte Fuel Cells have high-power density, rapid startup, and low-temperature operation (around 80 to 120 C), and so are ideal for use in applications such as energy transport and battery replacement. The electrolyte used is a proton conducting polymer. This is typically a perfluorinated polymer, though other hydrocarbon-based membranes are under development in an attempt to reduce cost or to enable operation at temperatures approaching 200 C. The catalytically active layer sits adjacent to the membrane, supported on a PTFE treated carbon paper, which acts as current collector and gas diffusion layer. For operation on pure hydrogen, platinum is the most active catalyst, but alloys of platinum and ruthenium are used when higher levels of carbon monoxide are present (CO is a poison in all low temperature fuel cells). (more…)
Fuel cells are typically classified according to type of electrolyte. While many varieties of fuel cells have been demonstrated ...
The fuel cell can trace its roots back to the 1800s when a Welsh-born, Oxford-educated barrister, Sir William Robert Grove, realize ...
Transport applications tend to demand rapid start-up and instant dynamic response from fuel cell systems, so a high-temperature ...
A fuel cell is an electrochemical device that combines hydrogen with oxygen to generate electricity, heat and water to produce. ...
Alkaline fuel cell, often known as the Bacon fuel cell following the British inventor’ name. It has become the most created fue ...
Several passive heating systems, if provided with proper ventilation, can ensure to provide cooling. Passive heating and cooling for houses can be done in several ways, one of which is called geothermal energy. Passing the water through pipelines via ground can achieve and distribute the heating and cooling all over the house. (more…)
Solar water heating for swimming pool rank as the most successful but least heralded commercial solar application. The use of solar ...
Active solar hot water systems water are usable with air, liquid, vapor or liquid collector fluid or gas to liquid process. Hot ...
A home solar energy system can save you a lot of money on your household electric, gas and other bills. The sunshine is not onl ...
Heat-actuated heat pumps are cooling systems requiring no electricity for operation. Rather, a heat source is used, avoiding the ne ...
The Geologists Association president advocates the use of geothermal energy by its high durability and low maintenance. Besides a r ...
If water is put on the floor on a cleaning operation, it tends to dry rapidly after a short time. In this position, we say that the water evaporates. Basically what happened is this means that changes in water levels from liquid to gas or steam. Evaporation occurs when molecules escape the surface of a liquid when they have enough kinetic energy to go off from the body of liquid. (more…)
10 benefits of Solar Energy: No 1 Solar energy is renewable. We never have to worry about running out of sunlight or usi ...
Extensive insulation repairs are usually done by contractors having the specific skills and equipment appropriate to the type o ...
Natural gas is found mainly in underground reservoirs and in coal beds. Natural gas is a fossil fuel that consist primarily of ...
It is a reasonable and sensible action to tighten our belts and cut spending as living cost are climbing nowadays. We have to m ...
Public acceptance (PA) clusters are defined by a number of rather intangible commonalties dealing with social values and public ...
