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Transcript of DDewis
7/30/2019 DDewis
http://slidepdf.com/reader/full/ddewis 1/24
Elliott Microturbines
Absorption Chiller IntegratedSystem Development
Dave Dewis
7/30/2019 DDewis
http://slidepdf.com/reader/full/ddewis 2/24
Overview
• Introduction
• Elliott TA100 CHP System
• Direct Fired Absorption Chillers
• System Integration
• Test Results
• Lessons learned
• Future Work• Installations – Ebara MGT Group
7/30/2019 DDewis
http://slidepdf.com/reader/full/ddewis 3/24
Introduction
• Commercial Launch of the TA-80MonoGen system was geared towardssupport of Solution Providers and tailoredinstallations.
• Complexity and redundancy has beeneliminated with the launch of the TA100CHP system while significantly reducing
installation time and footprint.• EESI Customers are now looking at more
complex Building Integrated systems thatincorporate Direct Fired Chillers.
7/30/2019 DDewis
http://slidepdf.com/reader/full/ddewis 4/24
Dimensions:
Height: 78 in Net Power Output: 100 kWe (ISO)
Width: 33 in Thermal Output: 172 kW (net)
Length: 120 in Exhaust Temp. 535 deg-F (ISO)
Dry Weight: 4000 lbs Fuel Input Flow: 22.0 scfm
ELECTRIC
ACTUATOR
HEAT EXCHANGER
GAS COMPRESSOR
RECUPERATOR
POWER
ELECTRONICS
INTAKESILENCER
OIL HEAT
EXCHANGER WITH FAN
COOLING
FAN
ENGINE / ALTERNATOR
ASSEMBLY
TA1
00 Integrated CHP
Package
7/30/2019 DDewis
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Elliott TA100 CHP Schematic
Fuel Inlet362 kW
Alternator Compressor
Air Inlet
Turbine
Combust
or
Recuperator
H e a
t
R e c
o v e r y
Internal Gas
Compressor
Cold Water Inlet
Hot Water Outlet
Exhaust Gas
Outlet
Electricity
105 kW
172 kW
63 kW
22 kWLosses
•CHP Efficiency 75%
• MonoGen Efficiency 29%
Microturbine
At ISO conditions:• 100 kW (Net) Electrical
• 172 kW Hot Water
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Single-Double Effect, (SDE), Absorption
Chiller
• 35 Tons of Cooling Capacity
• COP = 1.03
Direct Fired Absorption Chillers
• Integral damper included
• Solution temperature monitoring
as Safety Device
35 Tons of
Refrigeration
Internal
Parasitic Load
(Pumps): 1 kW235 kW
106 kW
7/30/2019 DDewis
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Elliott TA100 CHP –SDE Absorption Chiller
Integration
• Overall Efficiency 63 % @ 70F
• Generating hot water simultaneously reduces cooling capacity of
absorption chiller
System Integration
Electricit
y
Alternator Compressor
Air Inlet
Turbine
Combustor
Recuperator
H e a t R e c o v e r y
Internal Gas Compressor
Cold Water Inlet
Hot Water Outlet
Exhaust Gas Outlet
98 kW
235 kW
345 kW
106 kW
35 Tons
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H2O (Vapor)
Evaporator
Condenser
Exhaust-HeatedGenerator
Absorber
Weak LithiumBromide Solution
Strong LithiumBromide Solution
H2O (Vapor)
H2O (Liquid)
Exhaust Gas
Cooling Water Inlet(from Cooling Tower)
Cooling Water Outlet(to Cooling Tower)
Chilled Water Outlet
(to Facility)
Chilled Water Inlet
(from Facility)
Gas-Fired Generator
Pump
38.5 oC101.3 oF
32.0 oC89.6 oF
7.0 oC
44.6 oF
12.5 oC
54.5 oF
280o
C536 oF
SolutionPump
H2O (Vapor)
Low-Temp. Generator
Burner
Double Effect, DE, Absorption Chiller
40 Tons of
Refrigeration
Internal
Parasitic Load
(Pumps): 1.3 kW
• 40 Tons of cooling capacity
• COP = 1.04
•
Dual Fired System (Burner)
235 kW 101 kW
Direct Fired Absorption
Chillers
• Vacuum reset two/three times a year
• Internally pressurized in damper by-pass
•
Damper and damper controller are notincluded
7/30/2019 DDewis
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Elliott TA100 CHP – DE Absorption Chiller
Integration
• Overall Cycle Efficiency 67 % @ 70F
• Dual Fired Absorption Chiller integrated with TA100 CHP allows cooling
continuously (Burner) while simultaneously creating hot water.
System Integration
H2O (Vapor)
Evaporator
Condenser
Exhaust-HeatedGenerator
Absorber
Weak LithiumBromide Solution
Strong LithiumBromide Solution
H2O (Vapor)
H2O (Liquid)
Exhaust Gas
Cooling Water Inlet
(from Cooling Tower)
Cooling Water Outlet(to Cooling Tower)
Chilled Water Outlet
(to Facility)
Chilled Water Inlet
(from Facility)
Gas-Fired Generator
Pump
38.5 oC
101.3 oF
32.0 oC
89.6 oF
7.0 oC
44.6 oF
12.5 oC
54.5 oF
280 oC
536 oF
Solution
Pump
H2O (Vapor)
Low-Temp. Generator
Burner
Electricity
Alternator Compressor
Air Inlet
Turbine
Combustor
Recuperator
H e a t R e c o v e r y
Internal Gas Compressor
Cold Water Inlet
Hot Water Outlet
98 kW
345 kW
235 kW 101 kW
40 Tons of
Refrigeration
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Elliott TA100 CHP SDE Absorption
Chiller EESI Integration
System used to supply 59F air to test
cell for ISO standard day testing.
7/30/2019 DDewis
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TA100 MonoGen - DE Absorption
Chiller Integration (Sodegaura Plant)
Test Parameters• System start-up transient.
• Chiller Cooling Performance at different MGT output power.
• Chiller Heating Performance at different MGT output power.
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Elliott TA100 CHP - DE
Absorption Chiller Integration
(EESI Plant)
7/30/2019 DDewis
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Measurement shows that it took one (1) hour
to have 0 to 40 tons of cooling with burner
TA100 Monogen – DE Result
(Sodegaura Plant)
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Cooling Performance
TA100 Monogen – DE Result
(Sodegaura Plant)
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TA100 Monogen – DE Result
(Sodegaura Plant)
Heating Performance
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Lessons Learned
• Overall DE system efficiency, Cooling Mode, tested at 64%
• Overall DE system efficiency, Heating Mode, tested at 60%
• For heating purposes, TA100 CHP package operates at 75%.
• Maintenance requirements vary significantly between
manufacturers and should be closely considered. Impact willdepend on Customers experience.
• Chiller protection methodologies vary between
manufacturers, that can impact operational characteristics of
the system.
• Chiller/CHP integration involves a totally new set of skills,
Building Management integration, Water treatment, heat
rejection.
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Future Work
•
Completing the TA100 CHP – DE AbsorptionChiller installation at EESI for partial thermal loadtesting, and endurance testing.
• Develop and optimize “integration kits” for BCHPsolutions.
• Support Customer Installations to increase totalsystem knowledge for cost, permitting, andinstallation improvements.
•
Review Economic benefit of Integrating DesiccantSystem.
7/30/2019 DDewis
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TA 100 (80) Monogen. + Exhaust
Gas Absorption Chiller
7/30/2019 DDewis
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TA80 Monogen. + Exhaust
Gas Absorption Chiller
7/30/2019 DDewis
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TA80 Hot Water Cogen. + Hot
Water Absorption Chiller
Master Control Panel
TA80 H t W t C H t
7/30/2019 DDewis
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TA80 Hot Water Cogen. + Hot
Water Absorption Chiller
3 Units inside the Soundproof Wall
7/30/2019 DDewis
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TA80 Monogen. + Steam Boiler
7/30/2019 DDewis
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Digestion Gas TA80 Hot
Water Cogeneration
7/30/2019 DDewis
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2004 is full of Potential
Customers have caught up to the
Technology
The solutions they are looking for
are complex
It is up to “us” to deliver