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Development of a thermal energy storage system in a domestic environment into the
GREENKITCHEN™ project
Nelson Garcia-Polanco1, Simone A. Zavattoni 2, Joaquin Capablo1, John P. Doyle1, Maurizio C. Barbato 2
1 Whirlpool R&D, Cassinetta di Biandronno 21024, Italy.2 Department of Innovative Technologies, SUPSI, Manno 6928, Switzerland.
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INDEX
1. Introduction
2. Sources of wasted heat
3. Concept design of TES
Index
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3. Concept design of TES
4. Experimental setup
5. Preliminary results
6. Conclusions
7. Acknowledgments and references
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1. INTRODUCTION
3http://www.iapp-greenkitchen.eu/
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1. INTRODUCTION
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Partners:
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2. Sources of Waste Heat
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2. Sources of Waste Heat (2)
Type of appliance
Average energy
consumption
Wasted energy
TemperatureWaste heat
sourceAnnual uses
kWh/cycle Wh °C cycles/year
Electric ovens 1.25
95 34.5 Air-cooling cycle
110150 160 (cavity) Structure
160 41 Air-cooling cycle
250 250 (cavity) Structure
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Microwave ovens
0.056 0.88 30 Air cooling cycle 1,200
Gas hobs 0.75 280 50÷450 Structure 438
Refrigerators and freezers
640 Wh/24h2,000
Wh/24h35÷50
(condenser)Air continuous
Washingmachines
1 550 30÷35 Water 220
Dishwashers 0.8÷0.95 230 40 Water 280
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150
200
250
300
350
Po
we
r (W
)
2. Sources of Waste Heat (3)
0
50
100
150
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Po
we
r (W
)
time(hours)
Gas hobs
one hour
Gas hobs
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3. Preliminary design
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3. Preliminary design (2)
Latent Heat Storage (LHS)
Solid-liquid PCMMacro encapsulated organic PCM
Thermal Energy Storage with Phase Change Material (PCM)
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Macro encapsulated organic PCMMean diameter capsules= 3-4 mm Melt point=32°CThe capsules are composed of 80% PCM, 20% capsule material.
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4. Experimental setup
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5. Preliminary results
Charge phase of the cycle
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5. Preliminary results
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5. Preliminary results
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6. Conclusions
-An assessment of the waste heat produced by common appliances was done.
-A latent heat based Thermal Energy Storage (TES) system was developed, analyzed and tested.
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-A macro encapsulated organic PCM, with melting point of 32°C, was selected as suitable and reliable solution.
-A real scale prototype was built and tested to evaluate its capability of storing and delivering thermal energy.
-The results of the preliminary tests show the potential of the energy storage system.
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The Bauknecht GreenKitchen™refrigerator and dishwasher worktogether to save water and energyby reusing wasted heat from therefrigerator to preheat water in thedishwasher (A+++ Dishwasher).
6. Conclusions
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REFERENCE
7. Acknowledgments and References
ACKNOWLEDGMENT
This work has been developed in the framework of the GREEN KITCHEN Project (Grant agreement no. 251600) funded by an EU FP7 Marie Curie Action.
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REFERENCE
S. Zavattoni, N. Garcia-Polanco, J. Capablo, J. Doyle, M. Barbato. Household Appliances Wasted Heat Storage by means of a Packed-bed TES with Encapsulated PCM. 13th International Conference on Sustainable Energy technologies (SET2014).