zero emission indoor climate control - menerga

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WelkomBienvenu

Zero Emission Indoor Climate Control :Dream or Reality ?

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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

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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

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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

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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

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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.

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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

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Wassergehalt [gW /kgtr L]

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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

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Sorption mechanism

Adsorption

solid

vapour

heat removal

Desorption(regeneration)

solidliquid

heat supply

Absorption

liquid

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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

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5EA

EA

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SASA

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RA

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

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100%

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21 Absorption

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2 3 Temperature increase of the fan

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43 4 Indirect evaporation cooling

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4 5 Survey of heat- and humidity load

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5 6 Indirect evaporation cooling

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1 7 Desorption

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• 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

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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

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Aussenluft

Behaglichkeitsfeld / Sommer

Behaglichkeitsfeld / Winter

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University FREIBURG – comfort measurements

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AussenluftZuluft Behaglichkeitsfeld / Sommer Behaglichkeitsfeld / Winter

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University FREIBURG – comfort measurements

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AussenluftZuluftAbluft Behaglichkeitsfeld / Winter Behaglichkeitsfeld / Sommer

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10070

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40spezifische Enthalpie h

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University FREIBURG – comfort measurements

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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 !!

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THANK YOU FOR YOUR ATTENTION