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Elliott Microturbines

Absorption Chiller IntegratedSystem Development

Dave Dewis

7/30/2019 DDewis


Overview

• Introduction

• Elliott TA100 CHP System

• Direct Fired Absorption Chillers

• System Integration

• Test Results

• Lessons learned

• Future Work• Installations – Ebara MGT Group

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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.

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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

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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

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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


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

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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


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.

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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)

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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


(Sodegaura Plant)

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(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


TA 100 (80) Monogen. + Exhaust

Gas Absorption Chiller

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TA80 Monogen. + Exhaust

Gas Absorption Chiller

7/30/2019 DDewis


TA80 Hot Water Cogen. + Hot

Water Absorption Chiller

Master Control Panel

TA80 H t W t C H t

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TA80 Hot Water Cogen. + Hot

Water Absorption Chiller

3 Units inside the Soundproof Wall

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TA80 Monogen. + Steam Boiler

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Digestion Gas TA80 Hot

Water Cogeneration

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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

ddewis

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