MCL%20141%20:%20Thermal%20Sciences%20for%20Manufacturing - PowerPoint PPT Presentation

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MCL%20141%20:%20Thermal%20Sciences%20for%20Manufacturing

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Title: A Science Lead to Development of Civilization Author: P.M.V.S Last modified by: hp Created Date: 7/26/2002 1:39:54 AM Document presentation format – PowerPoint PPT presentation

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Title: MCL%20141%20:%20Thermal%20Sciences%20for%20Manufacturing


1
MCL 141 Thermal Sciences for Manufacturing
Energy or Tool Who cam first ?
2
An Engineering Duplication to Natural
ExpertsRunning Faster
350 km/hr
40 48 km/hr
3
An Engineering Duplication to Natural
ExpertsSwimming Faster
4
An Engineering Duplication to Natural
ExpertsFlying Faster
5
A Engineering Duplication to Natural ExpertsLoad
Carriers
6
Cow Brain Protein Could Build Better Batteries
and Solar Cell Cow
  • Researchers at Stanford are exploring the idea
    that clathrin, a protein found in cow brains, can
    form nanostructured inorganic material for use in
    solar cells and batteries.
  • Unlike synthetic materials used in energy tech
    that require nasty chemicals and high
    temperatures to form specific shapes, clathrin
    can be tweaked at room temperature and pressure.
  • If all goes well, next-generation solar panels
    may very well contain traces of cow brain.

7
Continuous Evolution of Homo Sapients
  • Raw food eating habits to Micro wave based
    cooking.
  • Human and animal vehicles to Automobiles.
  • Watching a flying bird to flying like a bird at
    high speeds.
  • Manual machines to Electric appliances.
  • Living with available seasonal food to eating
    anything at any time.
  • Spending hours on paper note book calculations to
    High speed computing note book.

8
Human impact on the environment
  • Human impact is called as an anthropogenic
    impact.
  • The term anthropogenic designates an effect or
    object resulting from human activity.
  • The anthropogenic impact on the environment
    includes impacts on biophysical environments,
    biodiversity and other resources.
  • The atmospheric scientist Paul Crutzen introduced
    the term "anthropocene" in the mid-1970s.
  • The term is sometimes used in the context of
    pollution emissions that are produced as a result
    of human activities but applies broadly to all
    major human impacts on the environment.

9
State of ecosystems, habitats and species
  • In the past, human interaction with nature,
    enriched the quality and variety of the living
    world and its habitats, although having a
    disruptive effect on nature.
  • Today, however, human pressure on natural
    environments is greater than before in terms of
    magnitude and efficiency in disrupting nature.
  • The policies pursued in the industry, transport
    and energy sectors having a direct and damaging
    impact on the nature.
  • The strong focus of forestry management on
    economic targets primarily causes the decline in
    biodiversity, soil erosion and other related
    effects.

10
Manifestations of the degradation
  • The clearest manifestations of the degradation of
    the natural environment are
  • Reduction and fragmentation of habitats and
    landscapes.
  • A decreased species diversity, due to reduced
    habitable surface area which corresponds to a
    reduced "species carrying capacity".
  • The reduction of the size of habitats also
    reduces the genetic diversity of the species
    living there.
  • Loss of Species of Fauna and Flora.
  • http//www.hobart.k12.in.us/jkousen/Biology/impact
    .html

11
Thermodynamic Classification Living Species
Life on Earth
Autotrophs
Heterotrophs
12
Earth, Life and Energy
  • Life on Earth is driven by energy.
  • Autotrophs take it from solar radiation and
    create Energy Reservoirs on Earth.

13
Creators and Exploiters of Energy Reservoirs
Heterotrophs take it from autotrophs.
14
Carbon Cycle With Autotrophs and Somatic
Heterotrophs
15
Energy and Human Evolution
  • The humans are extrasomatic heterotrophs.
  • The ability to use energy extrasomatically
    enables human beings to use far more energy than
    any other heterotroph that has ever evolved.
  • The human population modified more and more of
    its environment by using extrasomatic energy to
    suit human needs.
  • The world's present population of over 5.5
    billion is sustained and continues to grow
    through the use of extrasomatic energy.
  • The human race expanded its resource base so that
    for long periods it has exceeded contemporary
    requirements.

16
ONE TIME RESOURCE
SOLAR ENERGY
INCOMING RESOURCE
CO2 H2O
PHTOSYNTHESIS
SOLAR RADIATION
WINDS
VEGETATION
Heating of OCEAN S
CLOUDS
CHEMICAL ENERGY
RAINS
FOSSILIZATION
COAL
FOSSIL FUEL
PETROLEUM
NATURAL GAS
17
ONE TIME RESOURCE
SOLAR ENERGY
INCOMING RESOURCE
CO2 H2O
PHTOSYNTHESIS
SOLAR RADIATION
WINDS
VEGETATION
OCEAN THERMAL ENERGY
CLOUDS
CHEMICAL ENERGY
RAINS
HYDRO ENERGY
FOSSILIZATION
COAL
FOSSIL FUEL
PETROLEUM
NATURAL GAS
Calorific Value
18
Technology Vs Power
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