Why Fuel Cells

download Why Fuel Cells

of 8

Transcript of Why Fuel Cells

  • 8/2/2019 Why Fuel Cells

    1/8

    Why Fuel Cells?

    The need is clear and well recognized for clean, safe, and

    reliable forms of energy that can provide

    prescribed levels of power consistently, and on

    demand.Yet, most forms of non-combustion electric

    generation have limitations that impact widespread use of

    the technology, especially as a primary

    source of electric power (i.e., baseload power). Solar

    energy, for example, depends on the sun.

    Extended days of cloudy skies can severely limit the

    generation of electricity, and power availability

    Is generally considered to be between 25 to 35%.Windturbines are designed to turn kinetic energy

    into electricity.They too, depend on factors that cannot be

    controlled. In this case, the presence of

  • 8/2/2019 Why Fuel Cells

    2/8

    wind and a certain minimum wind velocity are required.

    As a result, power availability is judged to

    be in the range of 30 to 35%.Geothermal sources require

    heat energy from underground geothermalFields, which mean they are restricted to certain

    geographic locations. Similarly, hydroelectric

    Plants are confined to locations near major rivers and are

    also somewhat constrained by nature.

    Thus, without adequate and consistent sun, wind, heat,

    and water flow, such sources of power

    Generation are limited by the whims of nature and cannot

    be considered as reliable sources of energy.

  • 8/2/2019 Why Fuel Cells

    3/8

    Basic fuel cell. The ionic current varies with type:

    in solid oxide cells, for instance, oxygen ions

    travel from cathode to anode.. For example, in a Proton Exchange Membrane fuel

    cell, the hydrogen passes 1) through 'serpentine'

    channels that maximize its contact with 2) a porous

    medium, through which it diffuses to 3) the catalyst

    layer (platinum on nano-sized carbon particles)where it loses electrons then conducts as protons

    through 4) the polymer membrane to meet oxygen

    arriving through similar layers on the other side

    (layers which also conduct away water and heat,

    while keeping the membrane wet).

    Uses :-

    Fuel cells and emissions reduction

  • 8/2/2019 Why Fuel Cells

    4/8

    A fuel cell is an electrochemical device which, at its

    simplest, converts hydrogen and oxygen into water,

    along the way generating electricity and water. As

    such, fuel cells can be used to power any device

    which requires electricity.

    Fuel cells for portable devices show a great deal of

    market potential, particularly in ensuring a long

    running time and grid-independence of consumer

    electronics gadgets. Longer-term, large-scale fuelcell power plants offer low emissions and very high

    efficiency power generation for a range of

    applications while fuel cell cars, when fuelled with

    renewable hydrogen, offer zero emissions (other

    than water).

    ImplicationsThe fuel cell sector faces a once in a lifetime

    opportunity to make a viable business case for its

    role in both economic and environmental

    sustainability. This is primarily in emerged

    markets such as Europe, Japan and North America

    where job creation and emissions reduction are key;Fuel cell technology has the potential to reduce

    CO2 and regulated pollutant emissions, as well as

    improves operating efficiency of various

  • 8/2/2019 Why Fuel Cells

    5/8

    applications. In job creation terms, on current

    projections the industry is capable of generating over

    1 million new jobs, although some of these may be

    in non-traditional regions;

    o India, along with certain other emerging markets,has the low cost, high volume manufacturing,

    domestic market size and the potential to export

    that could make it a significant challenger to North

    America and Europe as centres for fuel cell

    manufacturing;The Middle East, driven by a desire to diversify

    its economies, could also be a substantial adopter

    of fuel cells, particularly as part of renewable

    energy systems.

    First the Hydrogen deal:Lets get the facts straight. Water is H2O aka- 2parts

    Hydrogen, 1part Oxygen combined together. When

    put under electrolysis or electrosis these molecules

    split forming a gas known as HHO which is a very

    explosive and powerful gas. The smallest of sparks

    can ignite the gas and if stored into container which

    for some reason caught fire the result could be fatal.No need to get scared though, if the proper

    precautions are made, no danger is to be seen.HHO is

    about 3 times more powerful than gasoline vapor.

    Meaning 1L of HHO would give your vehicle 300%

  • 8/2/2019 Why Fuel Cells

    6/8

    more power than 1L of gasoline vapor. But feeding an

    engine pure hho would destroy it due to the fact

    timing is advanced (spark before TDC) on most

    vehicles but needs to be retarded (spark after TDC).Also the temperature at which HHO Burns is melting

    point of the metal it touches. SO...your valves and

    head would burn through in a matter of weeks.

    Also in diesel engines if you completely remove

    diesel from an engine the upper cylinder gets no

    lubrication and will wear out your piston rings

    FAST.Getting enough HHO to power a car is pretty

    hard if not impossible. Explanation: a 2 cylinder 1L

    engine uses 1L of air per 4 revolutions (rpm).

    Gasoline is injected as a mist which turns into a vapor

    instantly at a ratio of 15 parts air to one part vapor.

    Which is .07 L. At 2000 RMP the engine uses 1/2L of

    vapor per SECOND. HHO is already one part oxygento two parts hydrogen so too much air would thin it

    out too much and give no

    So we use HHO to Boost the efficiency of our gasoline

    engine, giving it pure hydrogen and oxygen to let the

    fuel burn better. This is where the good part starts.

    Most sellers are selling systems that give less than 1/2LPM of HHO. When mixed with the air going to the

    engine that makes NOTHING. 1/10-1/2 LPM of HHO

    will do some good for a small engine like 50CC-2.0L

    again more HHO to the bigger engine. Any engine

  • 8/2/2019 Why Fuel Cells

    7/8

    over this size needs 1+ LPM. A lot of the sellers dont

    even know how much their system makes! They say

    "ALOT" but in reality all the cells I have tested that

    seemed to make alot, made 1/4-3/4 LPM. If the kitsupplies gas via an aquarium air line, the system

    makes nothing, trust me. LOOK OUT FOR THE

    GAS OUTPUT. I recommend .5-1.0LPM per Liter of

    engine displacement. Example: 2.0L vehicle should

    have a 1-2LPM generator for good increase in

    economy.

    Second, if a system uses a lot of AMPS, it will fry

    your alternator and battery in no time which no one

    will tell you though. Look out for systems that draw

    over 15AMPs but put out less than 1LPM.

    Energy storage including Fuel cellsThe economic feasibility of large stationary fuel cell

    systems for combined heat and power is one key

    area that needs improvement. Scale of economies

    with an increase in customer demand is understood,

    but here in California it may be the emission offsets

    that contribute significantly to the. Fuel cells canbecome a substitute technology for meeting thermal

    energy needs. Interestingly enough, it is wastewater

    treatment plants that have seen the most growth in

    http://www.renewableenergyfocus.com/category/66/energy-storage-including-fuel-cells/http://www.renewableenergyfocus.com/category/66/energy-storage-including-fuel-cells/http://www.renewableenergyfocus.com/category/66/energy-storage-including-fuel-cells/
  • 8/2/2019 Why Fuel Cells

    8/8

    deployment of large stationary fuel cells (mostly

    with Fuel Cell Energy technologies) in California.

    Thank you

    Project made by: ROUSHAN PRAKASH SINGH

    & AKASH JADHAV

    CLASS:-9th Y