cop tests of a rotation heat pump

COP tests of a Rotation Heat Pump Andreas LÄNGAUER (a), Bernhard ADLER (a), Christian RAKUSCH (a), Karl PONWEISER (b) (a) ecop Technologies GmbH, Vienna, 1230, Austria, [email protected] (b) Technical University, Vienna, 1040, Austria, [email protected]

2

Agenda

−Technology Explanation

−Product

−results of COP Tests

−Applications

−Outlook

−About ecop

TechnologyExplanation

Product results ofCOP Tests

Applications OutlookAboutecop

3

The joule process reach higher COP compared to 2-phase process

comparison of 1- and 2- phase process

10.3h4)(h3h1)(h2

h3h2COP =

−−−

−= 6.05

h1)(h2

h5h2COP =

−

−=

case 1

sink 70°C to 95°C

source 65° to 43°C

1

2

34

s

5

6

T

sink.in=70°Csink.out=95°C

source.in=65°Csource.out=43°C

NH3

1

2

3

4

T

s

sink.out=95°C

source.in=65°C

source.out=43°C

sink.in=70°C

Argon




4

High efficient compression of RHP makes Joule-process economical

Co

nse

qu

ence

of

loss

es

for

sim

plif

ied

ap

pro

ach

Joule Process– Ar

2-phase Process– NH3

P.compression in kW 1.319 165

P.expansion in kW 1.222 -

Net-power 97 165

COP 10,3 6,1

0,00

2,00

4,00

6,00

8,00

10,00

12,00

0,7 0,75 0,8 0,85 0,9 0,95 1

CO

P (

un

itle

ss)

Efficiency of compression and expansion (unitless)

COP Sensibility

Joule Process - Ar 2-phasen Process – NH3

Working range of standard

compressor

Working range of compression in

an ecop-RHP

Compression with 100% efficiency @ 1MW heat transferred

Compression with 80% efficiency @ 1MW heat transferred

Joule Process– Ar

2-phase Process– NH3

P.compression in kW 1.649 207

P.expansion in kW 1.222 -

Net-power 427 207

COP 2,3 4,8

Case 1

• Sink 70/95 and Source 65/43




5

Function of patented ecop-technology

Compression PipeExpansion Pipe

Expansion Pipe Fan

High Pressure Heat Exchanger

-

Low Pressure Heat ExchangerAxis of Rotation


Expansion Pipe Fan

High-Pressure Heat Exchanger

Low-Pressure Heat ExchangerAxis of Rotation




6

Function of patented ecop-technologyTechnologyExplanation



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The Joule process within the Rotation Heat Pump


Expansion Pipe Fan



5.2

1

23

4 5

5.1

1

2

3

4

5

5.1

5.2




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Recent product – The ROTATION HEAT PUMP K7 (RHP K7) in numbers

− Net power: 700 kWth (400-800 kW)

− Max. DT between Source in and Sink out: 40°C

− Flexible In- and Outlet temperature(Source -20°C to +110°C, Sink 0°C to +150°C) → Temperature range -20°C to 150°C

− Temperature spread up to 70°C (Source out to Sink out)

− Flow rate: 21 m³/h / 0,5 bar pressure drop

Reference system @ customer

− Operation of a biomass power plant which supplies surrounding municipalities with district heating

− Source: waste heat from CHP system

− Summer operation: Direct supply to district heating at 95°C

− Winter operation: preheating for boiler


Productresults ofCOP Tests


9

Advantages & strengths of RHP

0,5

1,5

2,5

3,5

4,5

5,5

6,5

0 20 40 60 80 100 120 140 160

CO

P

Temperature in °C

COP comparion, T_sink_out - T_source_out = 45K

COP-ecop COP-R717 COP-1234ze(E) COP-R134a COP-R1234yf




10

RHP

K7

Test rig

Test setting – schematic

RHP K7

Test rig



Applications OutlookAbout ecop

11

Confirmed by

Test results – constant COP at rising temperatureTechnologyExplanation



12

RHP - Comparison of process – Calculation/CFD/Test

1D-Analyses CFD Test

0

10

20

30

40

50

60

70

80

90

650 655 660 665 670 675 680

Tem

pe

ratu

re in

°C

Entropy in J/kgK

0

10

20

30

40

50

60

70

80

90

650 655 660 665 670 675 680

Tem

pe

ratu

re in

°C

Entropy in J/kgK

0

10

20

30

40

50

60

70

80

90

650 655 660 665 670 675 680

Tem

pe

ratu

re in

°C

Entropy in J/kgK

COP-Process = 7,2COP-RHP = 5

COP-Process = 7,4COP-RHP = 5,1

COP-Process = 5,4COP-RHP = 4

Heat transferred at sink: 540 kW




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RHP - Comparison of process

Heat transferred at sink: 540 kW

0

10

20

30

40

50

60

70

80

90

650 655 660 665 670 675 680

Tem

pe

ratu

re in

°C

Entropy in J/kgK

CFD

1D-Analyses

Testing




14

RHP fullfills requirements of most branches and processes

Use cases, where the product properties fits best and generates the greatest advantage for the customer:

− Branches

− Pulp & Paper

− Building materials

− Food industry

− Chemical industry

− District heating

− District cooling

− Centralised air-conditioning

− Processes

− Drying (bricks, wood, etc.)

− Pasteurisation

− Distillation

− Air-conditioning

Special requirements of customer:

− High temperatures (up to 100-150°C)

− Use of waste heat

− Fluctuating Inlet- and Outlet-Temperature

− At consistent high COP

RHP fulfils all those requirements!




15

Is the Rotation Heat Pump possible for every application?

− Problem: sensible heat transfer is a barrier forapplications where latent heat is needed





Expansion Pipe Fan



5.2

1

23

4 5

5.1

1

2

3

4

5

5.1

5.2

16

Is the Rotation Heat Pump possible for every application?TechnologyExplanation




Expansion Pipe Fan



5.2

1

23

4 5

5.1

1

2

3

4

5

5.1

5.2

50

60

70

80

90

100

110

120

130

140

510 520 530 540

Tem

pe

ratu

rein

°C

Entropy in J/kgK

Maximum physical possible COP for every application due to additional DOF!(by tilting the heat exchanger to compress and expand during the heat exchange)

Process similar to Carnot

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Is the Rotation Heat Pump possible for every application?

eco

p R

HP

-K7

eco

p R

HP

-M2

1

10

100

1000

10000

100000

Heat supply range in kW

Temperature at Sink

70°C50°C 90°C 110°C 120°C 140°C130°C 150°C 160°C30°C10°C-20°C

„Rotation Chiller“

ecop RHP „space heat“

Technical feasibility is confirmed




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About ecop

−Venture Capital backed company

−Founded: 2011

−Located: Vienna (F&E) Neuhofen (Production)

−Employees: 16

−Patents: 4 patent families including 66 international granted patents

Prizes & Awards

• State award Energy and Environment 2018• European Business Award for the Environment (EBAE) 2018• Finalist state award of innovation (VERENA)• Daphne, Mercur (innovation award), ÖGUT, ..




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Contact

Ing. Bernhard AdlerFounder & CEO

Telefon: +43-1-865 10 [email protected]

ecop Technologies GmbHAustriaLastenstraße 114531 Neuhofen an der [email protected]

Network & Partners

http://www.ecop.at/

mailto:[email protected]

cop tests of a rotation heat pump

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