Direct heat to electricity
conversion
Research objective
The objective is generator of electricity that is working
as collector and transformator of heat energy of air (environmental).
Work
Calculation, design, production and testing
of generator should be produced by Proposer in three months period.
Methodology and technical approach
The method is based on alternation of dielectrical permittivity
in flat capacitor by means of rotation. The capacity and energy of the
capacitor is depend of the permittivity, so if it is charging with inserted
dielectric and it is discharging without dielectric member there is some
difference in energy. This difference as additional electric power should
be transformed from inner heat energy of moving dielectrical member that
should be made of high permittivity material (epsilon about 2000).
Anticipated difficulties and recommended solutions
Energy of capacitor is function of square of voltage,
so it is necessary to develop high voltage design. From the other hand,
the method include half-period of cycle when the capacitor have not dielectric
and in this case it is just air gap capacitor. It is limitation for maximum
operation voltage. Solution is optimal balance for air gap size and the
voltage.
Expected end-product
Power supply that is working as transformator of heat
environmental energy in electricity.
A schedule in calendar months and phases of work
month #1 |
month #2 |
month #3 |
calculation and design |
production |
testing process |
Estimated cost
1. Staff:
- Engineers (3)
Standard salary 500$ per month. Total expenses for 3 month 4,500$.
2. Taxation for salary 41%: 1,845$
3. Equipment for laboratory: 500$.
4. Computers and office equipment 1,500$.
5. Materials: 3,500$.
6. Travels: 200$.
7. Post: 100$
8. Phone, Internet, fax: 200$.
9. Mechanical and other works to produce the prototypes: 1,000$.
10. Other: 100$.
Total expenses: 13,445$
Preliminary calculations
Permittivity for good dielectrical material is about
2000. Let's take surface of plates S=1 (mExp2), distance between plates
is 10 mm, voltage is 1000 V. Difference between energy of two-plates capacitor
with dielectric member and energy of the same capacitor without dielectric
member is about 0.88 J. The generator can be produced as battery
of 100 two-plates elements and in this case the energy difference is 88
J per one charge-discharge cycle. It means power 88 W per 1 sec rotation
velocity. So, we'll can take about 8 KW if the velocity is 100 rotation
per second.