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PCM in Concrete

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by

Victor Marcos

on 3 September 2013

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Transcript of PCM in Concrete

PCM in Concrete
Phase Change Materials
Encapsulation and Commercial solutions.
ENCAPSULATION METHODS
PCM applications in Construction
INDOOR ENERGY BALANCE
Micronal in Radiant Walls
Micronal in Concrete Admixtures
RESEARCH INPUTS
(Issues)
(Implementation in radiant elements)
Solid
Gas
Liquid

ENERGY
LATENT STATE
LATENT STATE
WATER AS PCM
DAILY EXAMPLES
Blue Ice Pack
TYPES OF PCM
LATENT HEAT
INORGANIC
ORGANIC
Salt hydrates.
Chemically instability
Volumetric instability
High Heat cappacity
Macroencapsulation.
Microencapsulation.
Nanoencapsulation.
EUROPEAN LEADERS IN PCM TECH
MICRONAL
Paraffins
Lower Heat cappacity
Flamable
Chemically stable
Volumetric stable
mPCM paraffin
21ºC
;
23ºC
;
26ºC
Powder & Slurry
Paraffin
Hydrated salts
-9ºC
-
90ºC
Raw material
Macroencapsulation
Microencapsulation
Plasterboard solutions.
Ceiling metal panels.
Concrete slabs.
THERMAL ENERGY STORAGE
IN-SPACE ENERGY STORAGE
Solar passive elements
Radiant solutions
In-Therm Klimavæg
Low layer-temperature
Range - 24-28ºC
Concrete layer 12mm
Needs Thermal Inertia
MICRONAL
DS-5038X
Radiant wall
Hydronic radiant wall
Sandwich panel
XPE + Concrete
Modular Solution
Heat-Pumps
Savings
30%
Why thermal inertia?
Solar Heating
VACUUM PIPES
SMART Metering
RESEARCH OUTPUTS
(Solutions)
Low density = High Volume (15%)
High filler content (>50%)
Mechanical strengths reduction.
(300kg/m3 -> 12Mpa (fc)
Aim --> Over 40Mpa (fc)
Rehologic problems (fluidity).
Sticky wet admixtures.
Thermal conductivity reduction.
Increase cement content (>750kg).
Traditional design methods REJECTED.
Design by Specific Surfaces methods..
Redefine aggregates grading.
W/C ratio reduction (< 0,35)
Glass fibres addition.
Increase vibration times.
Superplasticiser addition.
Concrete layer 12mm
OUTPUT Tech. Feasibility
Mechanical testing
Thermal testing
Workability
Exergy study
Electricity cost study
Can we store enough energy?
Is a profitable solution?
Will be usable?
Can be produced?
Realistic hypothesis?
S -> L
0-80ºC
100-150 kJ/kg
150-300 kJ/kg
(F)330 kJ/kg (V)2260 kJ/kg
Thank You!
TABS
RADIANT FLOORS
SLABS
WALLS
CEILINGS
TABS
Research Areas
Full transcript