Introduction to Chromasun MCT
Transcript of Introduction to Chromasun MCT
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Chromasun Micro-Concentrator
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Andrew Tanner PAGE 2
What is Solar Thermal?
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Solar Hot Water Heating
• Solar Hot Water heating
uses the heat of the sun
to generate hot water
• Flat panels like the ones
shown to the right can
efficiently generate
temperatures of 120F
but beyond that they
lose efficiency rapidly
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What is Concentrating
Solar Thermal?
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Concentrating Solar Thermal
• Concentrating solar
thermal uses reflectors
to actively track the sun
and concentrate the heat
onto an absorber pipe
• The reduced surface
area of the absorber
pipe means that these
types of collectors are
still efficient at
temperatures over 200F
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Why Chromasun?
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Solar Experience
• Peter Le Lievre (CEO) and Andrew Tanner (VP of Engineering) were founding engineers at Ausra, now
Areva Renewables. Between 2002 and 2008 built Australia’s largest solar thermal power plant and designed
Germany’s largest. They have applied this knowledge to design and build the Chromasun MCT.
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2008 Chromasun Formed
Objective: miniaturize the
known linear Fresnel optic
that they pioneered with
Ausra and make it into a
building friendly product
200X Reduction in size!
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MCT Exploded View
Receiver Pipe (SS 304 A213 Tube)
Parallel Mirrors
The MCT is fixed on the rooftop like a regular panel however
20 parallel mirrors internally track the sun to provide 20X
concentration onto a stainless steel receiver pipe
MCT Tracking Video
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Best in Class Solar Collector
Highest
temperature rated
solar collector in
the USA
(179ºC /354ºF)
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Why is the MCT the superior concentrator?
• Easy to install
• Closed loop plug-and-play
approach to tracking
• No external moving parts
• Reduced wind-loadings
• Reduced roof loadings (<5lb/sqft)
• Aesthetically stunning
• Easy to clean
• External tracking mechanisms
• Dependent on algorithms to track
• Reflective surface is prone to
abrasive damage over time
• Catches the dirt and hard to clean
• Lower roof packing density due to
shading
• Complex roof loadings
vs
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Andrew Tanner PAGE 12
How does the MCT install?
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Chromasun MCT – Simple Installation
MCT is self-supporting and has an integrated stand that has seismic and
structural sign-off to hurricane loadings
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Chromasun MCT – Simple Installation
The picking points and integrated racking makes installation on the rooftop
simple and efficient.
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MCT Installation Video
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Where have they deployed
the technology before?
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Santa Clara University Showcase Project
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Santa Clara University Showcase Project
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SCU Benson System Schematic
Simple plate exchanger
takes the 200F heat from
the MCT’s and delivers it to
the building loop
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SCU Solar Monitoring
Solar Monitoring Equipment was installed so that output could be modeled
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SCU BTU Energy Metering
BTU Metering was installed so that output could be measured
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SCU Performance
• Monitoring equipment enables
comparison of metered data with
modeled data
• For this project measured and
modeled have aligned perfectly!
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What if I have a steam
requirement?
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Industrial Process Heat Applications
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Solution for baseload
cooling?
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Cooling with MCT’s and a Double Effect Absorption Chiller
HHW
MCT Panels
DE Multi-Fire Absorption Chiller Cool Building
Sunlight
Heat Rejection
1.35 @ 7ºC / 44ºF
2.35 @ 30ºC / 85ºF
1 @ 175ºC / 350ºF and/or Natural Gas
CHW CW
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Roof Area Utilization
An MCT array in conjunction with a two-stage absorption
chiller is best in class for rooftop area utilization
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Solution for baseload
domestic hot water
&cooling?
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Solar Heating & Cooling with MCT Panels
The MCT’s unique ability to efficiently deliver thermal energy over 200F
makes it ideal for integration with absorption chillers / heat pumps
1.6 times as
much heat out!!
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Solar Heat & Cooling System Configuration
• This “Solar Cooling” design gets the Federal 30% rebate (including the aux boiler!)
• CSI State Rebate on Solar and Energy Efficiency rebate on the boiler skid
• Chromasun can finance the entire system and attain a payback through both solar
and the 150% efficient boiler
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Example Chiller at Poultry Farm in CA
Compact Skid!
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Rooftop solar energy yields for the building
0
50
100
150
200
250
300
350
400
Flat Plate DHW Flat Plate CHW PhotovoltaicCHW
MCT CHW MCT DHW +CHW
BT
U/s
qu
are
feet
roo
f are
a
Solar technology type
CHW
DHW
Best building
energy outcome!
The Chromasun MCT with the heat pump therefore delivers more energy for
a rooftop area than any other solar technology
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What if I have a high
latent/dehumidification load?
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Traditional Cooling Tem
p
“Summer” Boiler
Humidity removal by condensation
44ºF/
7ºC
65ºF/
18ºC
“cause that’s how we’ve always done it”
Over-chilling by
electrical vapor
compression
SENSIBLE
+ LATENT
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Latent Heat Removal with Desiccants Tem
p
Humidity removal by
desiccant (solid or liquid) that
can then be regenerated by
solar thermal
65ºF/
18ºC
Significantly reduced net
chilling by electrical
vapor compression and
no lover over-chilling
LATENT
SENSIBLE
Solar
regenerates the
desiccant
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How are these projects
financed?
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2011 – The year for Solar Thermal!!
• In 2011, the following incentives are available to offset the cost
– 30% Federal Investment Tax Credit as a GRANT
– 100% Bonus Depreciation at the end of Year 1 WORTH 30%
– California Solar Initiative Thermal Rebate is at Tier 1 and WORTH APPROX
20%
• In 2012, the incentives reduce to the following
– 30% Federal Investment Tax Credit as a TAX CREDIT
– 50% Bonus Depreciation at the end of Year 1 WORTH 15%
– California Solar Initiative Thermal Rebate will likely drop to Tier 2 and
WORTH APPROX 10%
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Project Financing
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?
• Chromasun is able to fully
finance projects as: – Finance Lease
– Thermal Power Purchasing Agreement
• Finance Lease – Fixed Monthly Rate
– Performance Guarantees
• Thermal PPA – Thermal Energy is metered and
charged to the customer at a rate
below what it costs to produce it from
gas (nominally 10%). I.e. Always
saving!
– 10, 15 or 20yr terms
– O&M remains responsibility of
Chromasun
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Andrew Tanner PAGE 39
Where do they
manufacture?
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Chromasun 10MW / Annum San Jose facility
Chromasun MCT are made
in the USA
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MCT Summary
• Chromasun MCT is based on existing CSP technology and over a decade
of experience in large-scale solar
• Highest Temperature rated SRCC collector in the US
• Concentrating the sun’s energy enables the MCT to consistently deliver up
to 220ºC (440ºF) on the rooftop
• MCT has no externally moving parts, reducing O&M
• Unlike other concentrating technologies, cleaning is limited to flat glass
(automated cleaning system in development)
• MCT can be turned on a off which provides safe operation
• MCT is a durable, industrial grade product with sturdy installation method
• The delivery of higher grade heat enables compatibility with absorption
chillers and thermally driven heat pumps
• Project financing available through Chromasun