Natural Gas-Engine DrivenHeat Pump Water Heaters

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HEWH-500-AS HEWH-500-WS

Brought to you by: The leader in CHP for over 30 years!

Ilios High Efficiency Water Heater: More than twice the efficiency of a conventional boiler

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Why is a boiler like an iceberg?

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Water Heating Costs

First Costs

Fuel

$

$$$

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Fuel Costs

$

$

$

Ilios Product Line

� HEWH-500-AS “Air-Source”

� 300-600 MBH Heat Output

� Efficiencies 1.2-2.2 (120-220%)

� 4’ X 7’ X 6’ Box

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� Typically Installed Outdoors

� HEWH-500-WS “Water-Source”

� 300-600 MBH Heat Output

� Efficiencies 2.0-3.0+ (200-300%)

� 3’ X 5’ X 6’ Box

� Typically Installed Indoors

HEWH-500-AS Product Concept

Heat Out

A

A2

B

E

A1

Condenser

Compressor

Natural

Gas

Engine

Waste

Heat

78 °F Ambient 120 °F Hot WaterYou only pay for

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C

Air-Cooled Evaporator

Heat From

Outdoor Air

Refrigeration CycleD

5 kW

Generator

for

Parasitics

120 °F Hot Water

This energy is free and renewable!

You only pay for gas input energy…

Product Specification- HEWH-500-AS

� 300,000-600,000 Btu/hr Heat Output

� Engine (<50 HP)

� 2.5 L FORD 4-Cylinder

� Natural Gas or Propane Fuel

� Ultra Low Emissions

� Small 5 kW generator for electrical parasitic load

� Electrical Requirement 115/60/15A similar to household appliance

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� Electrical Requirement 115/60/15A similar to household appliance

� Control power & battery charging

� Cogenerates parasitic load for pump and fans

� NO COSTLY 3-PHASE POWER SERVICE NEEDED

� Next-generation control system

� Internet-Based

� Touch-screen display

� Advanced communications (CAN)

� Efficient, low-pressure, HFC-134a refrigerant

Coefficient of Performance

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Heat Output

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How Do We Stack Up?

Ilios HEWH-500AS COP = 2.0 (Source Efficiency)

= 5.5 (Site Efficiency)

Commercial Electric Heat Pump Water Heater

10Conditions: Producing 120°F Hot Water @ 78°F Ambient

Commercial Electric Heat Pump Water HeaterCOP = 1.2 (Source Efficiency)

= 4.0 (Site Efficiency)

BoilerCOP = 0.85 (85%) (Source Efficiency)

A BTU of Electricity is approximately 3X the cost of a BTU of Gas!

Source Efficiency Comparison

η=33%

100 Units of Energy

Overall Efficiency

200Units of

Heat200%

Natural Gas Heat Pump Water Heater

55 50

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η=33%

Power Plant

6% Loss

200Units of

Heat

200Units of

Heat

166 Units of Energy 120%

235 Units of Energy 85%Gas Boiler

Electric Heat Pump Water Heater

Conditions: Producing 120°F Hot Water @ 78°F Ambient

55 50

Operating Cost Comparison

Example: Hotel/Condo/Hospital in Boston

Average thermal load per month = 4000 therms

400 MMbtu or 117,200 kWh monthly

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or

4800 MMBtu or 1,406,400 kWh annually

Virginia Assumptions: Natural Gas = $0.90/thermElectricity = $0.12/kWh (Blended Rate)

Operating Cost Comparison

COP = 2.0

4800 MMBtu

4800 MMBtu

COP = 4.0 (Site Efficiency)

$27,600*(2400 MMBtu)

$42,192

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4800 MMBtu

4800 MMBtu

COP = 0.85

$42,192(351,600 kWh)

$50,823(5647 MMBtu)

*Includes full annual maintenance contract

Fuel In(Natural Gas or Propane)

252,527 Btu/hr

Example of Ilios HEWH-500-WS producing hot and chilled water simultaneously.

HEWH-500-WS Product Concept

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252,527 Btu/hr

Chilled Water Hot Water

24 Tons(287,638 Btu/hr)

Coefficient of Performance (COP) =252,527 Btu/hr

287,638 + 476,289 Btu/hr=

Fuel In

Total Energy Out

=3.0

Conditions:

Hot Water Out =120°F

Source Water = 47/54°F476,289 Btu/hr

1. Chilled Water Loop� Free chilled water (15-25 tons) while producing hot water� Chilled water value dependent on:

� Existing electric chiller efficiency� Electric Rate� Demand Charges

� Any large building with a chiller and boiler loop2. Condenser Water Loop

Available Sources

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2. Condenser Water Loop� 80-95°F Source Temp = Very High Heating Efficiencies� Only works with water-cooled chilling plants

3. Low-Grade Waste Heat� Manufacturing & Food/Beverage Production Plants

4. Groundwater/Geothermal� Not a common application but is possible

Efficiencies (COP) from:� 1.5-2.5 Heating� Up to 3.1 w/ cooling effect

Product Specification- HEWH-500-WS

� 300,000-600,000 Btu/hr Heat Output

� Engine (<50 HP)

� 2.5 L FORD 4-Cylinder

� Natural Gas or Propane Fuel

Ultra™ Low Emissions

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� Ultra™ Low Emissions

� Next-generation control system

� Internet-Based

� Touch-screen display

� Advanced communications (CAN)

� Efficient, low-pressure, HFC-134a refrigerant

20,000

25,000

30,000

35,000

40,000

Do

lla

rs ($

)

Annual Operating Cost Comparison (NYC)

Assumptions:

1. 4000 operating hours/year

2. 22 tons of chilling (47°F/54°F)

3. 527,500 Btu/hr of hot water (120°F)

4. Electric Rate $0.12/kWh, $20/kW Demand Charge

5. $1.00/Therm Natural Gas

6. Electric Heat Pump COP = 6.0, Boiler Efficiency = 75%,

Electric Chiller Efficiency (0.6 kW/ton)

Maintenance Cost

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0

5,000

10,000

15,000

20,000

Do

lla

rs ($

)

Electric

Water-Source

Heat Pump

Boiler &

Electric Chiller

Ilios

Gas-Engine Driven

Water-Source

Heat Pump

Maintenance Cost

Near Zero Criteria Pollutants!� Cleanest emissions of any fossil fuel based water

heater on the market

� Cleaner emissions than almost all central power plants

Ilios offer’s NO /CO

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Ilios

NOx/CO emissions

comparable to Fuel Cells

Ilios Ultra

Utility Incentives

� The Ilios machine falls either under existing incentive programs with several utilities or under custom programs

� Many utilities will pay $1.00-$2.50/therm saved in the first year. This could be anywhere from $15,000-

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first year. This could be anywhere from $15,000-$50,000 depending on the installation.

� Incentives currently available through, National Grid, NStar, SoCalGas, and others.

� Helps Utilities meet their therm savings goals

� Typical installations save 15,000-30,000 therms/year

Federal Incentives

� Ilios heat pump qualifies for the 10% Investment Tax Credit as it is considered mechanical CHP. This is available until December 21, 2016.

� Per section 48(a)(3)(A)(v) of the IRC the CHP Tax Credit is defined as:

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Credit is defined as:“A property compromising of a system which uses the same

energy source for simultaneous or sequential generation of electrical power, mechanical shaft power, or both, in combination with the generation of steam or other forms of useful thermal energy (including heating and cooling applications”

� 500,000 Btu/hr Output (nominal)

� Hot Water delivery temperature 100°F-165°F

� Highly Efficient Heat Pump cuts heating costs and carbon footprint in half

� Ultra Low emissions with near zero criteria

Product Features and Benefits

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� Ultra Low emissions with near zero criteria pollutants

� Simple installation to existing hot water system

� Minimal Electrical Requirements-120V/60Hz/10A

� Modular & Scalable

Safety Certifications

� ETL Approved to the following standards:

� UL 1995-Safety Standard for Heating and Cooling Equipment

� ANSI Z21.40.2- Gas-Fired, Work Activated Air-Conditioning and Heat Pump Appliances (Internal Combustion)

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(Internal Combustion)

� CE Marked for Europe

� Indoor and Outdoor Installation Approved

What about the service??

� Annual preventive maintenance-just like a boiler

� Up to 8,000 hour oil change intervals!

� Tecogen Full Factory Service available at a rate of $1.00/run hour

� All economic analysis presented includes service fee

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� All economic analysis presented includes service fee

� Tecogen currently has over 1500 machines in the field running under factory service contracts

� Everything is covered “bumper-to-bumper”

� Essentially an unlimited parts & labor warranty

� The first Tecogen cogeneration module has been running for over 31 years-serviced by Tecogen!

HEWH-500-AS

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Screen shot of unit running at full load producing 130°F hot

water at 90°F ambient in Boston on 7/19/13 in our factory

test cell. As you can see the unit is putting out 650,000

Btu/hr of heat with a gas input of only 289,577 Btu/hr. This

provides a COP = 650,000/289,577 = 2.25

This is 3X the efficiency of typical gas boiler!!

HEWH-500-WS

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Screen shot of unit running at full load producing 122°F hot

water using a 55°F chilled water return as the source

temperature. As you can see the unit is putting out 476,289

Btu/hr of heat with a gas input of only 252,527 Btu/hr. This

provides a COP = (476,289+287,638)/252,527 = 3.0

This is 4X the efficiency of typical gas boiler!!

Applications� Domestic Hot Water� Pool heating� Laundry/Food Prep� Process Heating

� Food/Beverage� Manufacturing

� Desiccant Regeneration� Summer Reheat (Humidity Control)� Space Cooling (chilled water)

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� Space Cooling (chilled water)� Process Cooling (chilled water)

� Hotels� Condos� Correctional Facilities� Nursing Homes� Hospitals� Spa/Health Clubs� Universities� Manufacturing Facilities

Building Types

Sample Installations

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Questions?

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Ilios Dynamics- A Wholly Owned Subsidiary of Tecogen Inc.

Quality Crafted in the USA

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45 First Avenue

Waltham, MA 02451

United States

Product Manager: Stephen Lafaille

Stephen.Lafaille@tecogen.com