PROGRAMME SOLHEATCOOL

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PROGRAMME SOLHEATCOOL
STUDY AND DEVELOPMENT OF HEATING / COOLING
SYSTEMS USING RENEWABLE ENERGY COSTIC - Comité
Scientifique et Technique des Industries
Climatiques - Eric MICHEL Enerbuild Participant
number 37
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PROJECT PARTNERS
COSTIC Research centre - Technical co-ordinator
JACQUES GIORDANO INDUSTRIES -
France Manufacturer of solar collectors VELTA -
Germany Manufacturer of heating / cooling
floors ZAE BAYERN - Germany Manufacturer of
absorption heat pump IMPAE / NOA -
Greece Modelling of the system
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RESEARCH TOPIC
TO DEVELOP A SOLAR HEATING / COOLING SYSTEM
COMPOSED OF Absorption heat pump
Solar thermal collectors Heating / cooling
floor
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RESEARCH TOPIC
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BACKGROUND

• Existing reversible systems
• Conventional heat pump
• Gas absorption heat pump using LiBr / water with
  power over 100 kW
• Aim of the programme
• To design a HCFC free heating cooling systems
  using renewable energies for small or medium
  buildings
• Type of buildings
• Surface about 300 m²
• Tertiary sector - little collective housing

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PROJECT OBJECTIVES
To study the application of a floor system for
cooling To study high performance solar
thermal collectors To study a Lithium
bromide / Water absorption heat pump To
study the complete heating / cooling system
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STUDY OF THE HEATING / COOLING FLOOR SYSTEM

• Tests achieved in climatic cell
• Study of the influence of parameters on the heat
  exchange coefficient Objective was to obtain
  heat exchange coefficient around 7 W/m².K
• Testing of a system inertia - reaction of the
  control

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STUDY OF THE HEATING / COOLING FLOOR SYSTEM
MEASURE OF THE HEAT EXCHANGE COEFFICIENT
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STUDY OF THE HEATING / COOLING FLOOR SYSTEM
HEAT EXCHANGE REPARTITION
1,9 W / m² K
5,5 W / m² K
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STUDY OF CONTROL

• Measurement of the response to a pseudo step of
  supply water temperature
• Measurement of the response of a floor system to
  several scenarios
• Slow and mean increase of the external dew point
• Fast increase of the external dew point
• Fast increase of the load
• Cycle with internal inputs and solar load
  simulation
• Results
• Control must insure a fast reaction of water
  temperature to variation of the dew point in
  order to limit risks of condensation on the floor

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STUDY OF THE SOLAR COLLECTORS

• Improvements brought to the collectors
• New selective coating to improve the efficiency
• New welding process laser welding to allow an
  on line production

CORTEC prototype
C8 prototypes
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STUDY OF THE SOLAR COLLECTORS
C8 COLLECTORS
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STUDY OF THE SOLAR COLLECTORS
CORTEC
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STUDY OF THE ABSORPTION HEAT PUMP
Status of the task The construction of the
prototype is on going. This task was foreseen in
1999 but our partner who was manufacturer of the
prototype has gone bankrupt in 1999. A new
partner (ZAE BAYERN) began to work in September
2000. The duration of the programme has been
extended of 15 months until September 2001
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CONCLUSION (1)

• Study of the heating / cooling floor system
• Measurement of the heat exchange coefficient
• Sizing of the whole system
• Study of the working of the control
• Objectives reached
• Study of the solar collectors
• Measurement of the performances of some
  prototypes
• Objectives reached
• Study of the AHP (on going)
• Work foreseen measurement of the performance
  according to several parameters (boiler
  temperature, evaporator temperature, cooling
  tower temperature)

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CONCLUSION (2)

• Study of the whole system
• Connection of the different part of the system
  and measurement of the performances
• Modelling
• Modelling of the working and preparation of a
  handbook and a data basis of the results of the
  modelling
• End of the programme September 2001