26.09.2012

1

WelkomBienvenu

Zero Emission Indoor Climate Control :Dream or Reality ?

26.09.2012

2

applicationenergy

MENERGA – What does it stands for ?

minimum applicationenergym

MENERGA fields of application

Parliament / BudapestPrivat swimming pool hall / Waiblingen-Neustadt

Zoo Hellabrunn / MunichPremium sports studio / Stuttgart

26.09.2012

3

Fields of competence

_ Customer service

_ Air-conditioning and climate-control technology

_ Air conditioning inswimming pool halls

_ Process and climate cooling

_ Chilled water units

_ Heat recovery from water

MENERGA and research organisations

26.09.2012

4

MENERGA KLIMA PLUS

System concepts that save resources and are environmentally friendly

Efficient, resource saving operation thanks to the highest degree of efficiency

Maximum reduction of CO2 emissions

Technologies modelled on nature

Products and production

Manufacturer of complete systems

Experience in research projects

All knowledge's consolidated

Flexible fabrication

Experience in practice

Integrated control and regulation system

26.09.2012

5

Products and innovations

1980

1985

1991

energy saving swimming pool hall air conditioning

regenerative air conditioning with heat recoverywith more than 90 % efficiency

„Adiabatic“ – cooling without electric power

Supply AirOutside Air

Direct Evaporation Cooling

Outside Air

Exhaust airReturn air

Supply Air

Indirect Evaporation Cooling Humidification before Heat Recovery

Outside Air

Exchaust airReturn air

Supply Air

Indirect Evaporation Cooling Humidification during Heat Recovery

Evaporation cooling systems

26.09.2012

6

26.09.2012

7

26.09.2012

8

26.09.2012

9

26.09.2012

10

26.09.2012

11

26.09.2012

12

26.09.2012

13

26.09.2012

14

26.09.2012

15

26.09.2012

16

26.09.2012

17

26.09.2012

18

26.09.2012

19

26.09.2012

20

26.09.2012

21

1980

1985

1991

1994

1999

2004

2007

2008

Products and innovations

energy saving swimming pool hall air conditioning

regenerative air conditioning with heat recoverywith more than 90 % efficiency

„Adiabatic“ – cooling without electric power

Implementation of optimum efficiency motor with integral frequency controller

hybride compact – chilled water unitwith integrated compression refrigeration plant

energy efficient compressorwith integrated control of power output

web based Integrated control and regulation systemof air conditioning systems

Zero Emission Indoor Climate ControlDream or reality ?

Why Climate Control?

For economic reasons employees are 10 to 15 % more efficient in comfort

conditions

For Company Image reasons

To be attractive for hard to find emplyee profiles.

26.09.2012

22

What is Climate Control?

Climate Control = more than cooling

Climate Control = also dehumidification

Dry air is very comfortable

Temperature may rise 2 – 3 K at dry circumstances with same comfort awareness

Higher room temperature Higher cooling capacity using sustainable

energy sources.

Dehumidification bycooling and condensation

100%

50%

90%

80%

70%

60%

40%

30%20%15%10%5%

15

20

25

30

35

40

45

0 5 10 15 20

Tem

pera

tur [

°C]

Wassergehalt [gW /kgtr L]

100%

50%

90%

80%

70%

60%

40%

30%20%15%10%5%

15

20

25

30

35

40

45

0 5 10 15 200 5 10 15 20

Tem

pera

tur [

°C]

Wassergehalt [gW /kgtr L]

cooling coil & LPHW reheater

Condensation on cold surfaces or water drops

Cooling coil with chilled water

DX cooling coil

Cold water sprinkler

For the dehumidification of air, surface temperatures below the dew point are needed

The production of the cold water is produced bye.g. through a chiller

OA

SA

26.09.2012

23

Sorption mechanism

Adsorption

solid

vapour

heat removal

Desorption(regeneration)

solidliquid

heat supply

Absorption

liquid

100%

50%

90%

80%

70%

60%

40%

30%20%15%10%5%

15

20

25

30

35

40

45

0 5 10 15 20

Tem

pera

tur [

°C]

Wassergehalt [gW /kgtr L]

100%

50%

90%

80%

70%

60%

40%

30%20%15%10%5%

15

20

25

30

35

40

45

0 5 10 15 200 5 10 15 20

Tem

pera

tur [

°C]

Wassergehalt [gW /kgtr L]

DEC-plant with dehumidification rotor

• typical adsorption material LiCl, silica gel or molecular sieve• regeneration temperatures 70°C up to 120°C !!

• due to the mechanical rotors, immediate regeneration is necessary

• cooling of the adsorption process is not possible

Dehumidification rotor (adsorption)

EA

Humidifier

Humidifier

Heat exchangerDehumidification rotor

Heater of the regeneration air

2

2

4

4

5

5EA

EA

1

1

OA

OA

SASA

3 RA

3

RA

• Low primary energy ratio (thermal COP) of 0,7 to 0,8

26.09.2012

24

100%

50%

90%

80%

70%

60%

40%

30%20%15%10%5%

15

20

25

30

35

40

45

0 5 10 15 20

Tem

pera

tur [

°C]

Wassergehalt [gW /kgtr L]

100%

50%

90%

80%

70%

60%

40%

30%20%15%10%5%

15

20

25

30

35

40

45

0 5 10 15 200 5 10 15 20

Tem

pera

tur [

°C]

Wassergehalt [gW /kgtr L]

1

1

2

21 Absorption

2

3

2 3 Temperature increase of the fan

3

43 4 Indirect evaporation cooling

4

5

4 5 Survey of heat- and humidity load

5

6

5 6 Indirect evaporation cooling

67

1 7 Desorption

7

• absorption material LiCl-brine+ regeneration temperatures only 50°C to 70°C

+ discontinuous absorption and regeneration possible

+ cooling of the absorption process is possible+ unlimited loss-free storage of regenerated brine (5 x more energy stored in brine than water)

Dehumidification by absorption (liquid)

EA

FA

RA

SA

+ high primary energy ratio (thermal COP) of 1,4 to 1,6

Sources of low temperature heat

Process heat

Solar energy

District heating

Heat energy

26.09.2012

25

26.09.2012

26

26.09.2012

27

26.09.2012

28

26.09.2012

29

26.09.2012

30

26.09.2012

31

26.09.2012

32

26.09.2012

33

26.09.2012

34

26.09.2012

35

26.09.2012

36

26.09.2012

37

Universitätsklinikum, Freiburg

Commisioning: May 2006Volume flow: 12.000 m³/h Regeneration: Low temperature heat

from the district heating system of the University

SOBIC, Freiburg

Commisioning: July 2003Volume flow: 1.500 m³/h Regeneration: Solar

Realised objects

-10

-5

0

5

10

15

20

25

30

35

40

0 2 4 6 8 10 12 14 16 18 20

Wasserdampfgehalt x [g/kg]

Luft

tem

pera

tur [

°C]

Aussenluft

Behaglichkeitsfeld / Sommer

Behaglichkeitsfeld / Winter

10 20 40

60

80

10070

50 60

40

spezifische Enthalpie h

rela

tive

Feuc

htig

keit

[%]

20

30

10

0

University FREIBURG – comfort measurements

26.09.2012

38

-10

-5

0

5

10

15

20

25

30

35

40

0 2 4 6 8 10 12 14 16 18 20

Wasserdampfgehalt x [g/kg]

Luft

tem

pera

tur [

°C]

AussenluftZuluft Behaglichkeitsfeld / Sommer Behaglichkeitsfeld / Winter

10 20 40

60

80

10070

50 60

40

spezifische Enthalpie h

rela

tive

Feuc

htig

keit

[%]

20

30

10

0

University FREIBURG – comfort measurements

-10

-5

0

5

10

15

20

25

30

35

40

0 2 4 6 8 10 12 14 16 18 20

Wasserdampfgehalt x [g/kg]

Luft

tem

pera

tur [

°C]

AussenluftZuluftAbluft Behaglichkeitsfeld / Winter Behaglichkeitsfeld / Sommer

10 20 40

60

80

10070

50 60

40spezifische Enthalpie h

rela

tive

Feuc

htig

keit

[%]

20

30

10

0

University FREIBURG – comfort measurements

26.09.2012

39

Passive BuildingsZero Emission Buildings or conceptsDehumidification of Swimming Pools

Air volumes 1.200 to 14.400 m³/h

Use of Renewable Energy at low temperature (55 – 70°)Use of waste energy from other (industrial) processes

Use of rain water or lake water is a possibility

Domaines of application

Zero Emission Indoor Climate Control :It’s no dream anymore

It’s real !!

26.09.2012

40

THANK YOU FOR YOUR ATTENTION