Title: COMBINED HEAT AND POWER (CHP) THE SOLAR WAVE OF THE FUTURE
1COMBINEDHEAT AND POWER(CHP)THE SOLAR WAVE OF
THE FUTURE
- Anders Jepsen
- HelioDynamics, Inc.
- jepsen_at_heliodynamics.com
2Combined Heat Power (CHP)A Subset of
Concentrating Solar
HD Solar
- So whats Concentrating Solar?
- Big area of focus or reflector, small area of
receiver - Existing systems use the heat to make
electricity - Solar 2 (tower, decomd) SEGS (trough,
working) Dish Stirling (in dev)
3How do these Concentrating Solar systems harvest
the heat energy?
HD Solar
- Receivers
- Tower (molten salt!) from reflecting heliostats
- heat to steam to turbine electricity
- Thermal tubes of hot oil from reflecting
troughs - heat to steam to turbine electricity
- Dish Stirling Stirling engine drives a
- turbine directly. 25kW per unit.
-
4Whats good about these systems?
HD Solar
- Utility Scale Concentrating systems can and do
deliver solar power to the grid - Lots of sunny (windy) desert space available
But, heres the down side. 1) The technology
needs big systems to work - very costly 2) Big
arrays need extra wheeling capacity (power lines)
to deliver the power to the grid.
5Is there a smaller technology?
HD Solar
- Yes, indeed! Heres a simple system that uses
flat plate glass mirrors mounted on to a
laser-cut steel structure that keeps the sun
focused on the receiver all day. It can deliver
heat, or heat and pv electricity together,
directly to the end user.
6Thats Combined Heat and Power! CHPCHP not
only concentrates the the sun to make heat,But
also uses PV cells to make electricity, at the
same time!So, instant electricity, no matter
what the system size.
HD Solar
- How it works just like the big systems -
- big area of reflectors, small area of
receivers - How does it make the electricity?
- The system mounts the pv cells, modified so
they can carry a lot of current, to the underside
of the receiver.
And, because of its simplicity of design, it can
be installed anywhere that the energy is needed.
Its DISTRIBUTABLE.
7And what about the heat?
HD Solar
- Thats where the real energy savings come in.
- If you have a use for the heat, the capital cost
barrier that has stood in the way of solar power
for all these years IS REMOVED. - So how can we use the heat?
- Hot water for hospitals, labs, industries
- Drive a Chiller for refrigeration and cooling
- Hot water for schools and gymnasia
- What do you need? What do you want?
8So where does CHP fit in todays world?
HD Solar
- Three configurations available
- Combined electric Power and Heat
- (true CHP, up to 90C hot water)
- Heat only receiver has no pv cells,
- industrial grade heat up to 160C
- Electricity only GaAs cells, 300x concn.
- Ideal for large energy parks
9Some Applications
HD Solar
- Air conditioning in a private home
- Organic Brewery Coop
- Napa Valley Mobile Home Park
- Food processor
- Hospital hot water
- Retirement Community air conditioning
- University Building and parking lot
10Cooling a private home - CHP
HD Solar
- Objective replace
- electric A/C
- w/ solar A/C
- Obstacle cost without
- incentives
- Motive test concept
- before applying to
- green restaurant chain
- 4.5 kWe 25.5 kWtherm
- Cost 85,000
11Organic Brewery Coop - CHP
HD Solar
- Objective replace grid
- electricity natural gas
- Obstacle cheap natural
- gas electricity
- Motive public relations,
- look green and organic
Size 16 kWe plus 96 kWthermal Cost
146,000 Payback after 30 FTC 7 years
12Napa Valley Mobile Home Park CHP
HD Solar
- Long term Object 500 kWe,
- LEEDS, replace propane
- Start with 10 kWe plus
- 60 kWtherm
- Use for heat chilling water
- pasteurization for ag use
- Cost 127,000
13Food Processor Refrigeration(and hot water for
cleaning)
HD Solar
- Objective Refrigeration
- Obstacle CFO, payback
- Motive Save now
- Technical replace 50 tons elect refrign
- plus 1.6MMBTU/hr hot water
- Value Replace 116,600 kWe/yr
- 35,400 therms gas/yr
- Cost 510,000, payback 4.7 years
14Hospital hot water
HD Solar
- Objective hot water
- Obstacle payback
- Motive
- hedge against ga
- Look green
- Size 1287 kWtherm
- over pkg lot
- Cost 1,100,000
- Payback 11 yrs w/ FTC
15Retirement Community Cooling
HD Solar
- Objective Provide A/C
- cooling to individual units
- Obstacle CFO, payback
- Motive look green
- Hedge against gas
- Size 450 tons of cooling
- Cost 3.4 million
- Payback 7 years
- Incentives FTC, 5-yr depn
16University of New Mexico - CHP
HD Solar
- System 30 tons refrigeration (105 kW of
cooling) - equivalent to 35 kWe of
electricity - plus 27 kWe
- Equivalent Electrical output 62 kWe
- Cost 430,000 or 7 per watt!