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Living in harmony with Nature
Phase Change Materials for Renewable Energy
In Buildings
Jul 2016
Tejwant NavalkarExecutive Director, DFX Systems Pvt Ltd
Living in harmony with Nature
The need for Renewable Energy
Solar Thermal Overiew
Traditional Solar Thermal Solutions
Phase Change Materials (PCM)
CASE STUDY – A 240.7m tall Building• Building Features• Solar Hot Water Schematic• Challenges in implementing Renewable Energy• Solution for Hot Water Generation
Other Applications for use of PCM
AGENDA
Living in harmony with Nature
Alternate Source of Energy is the need of the hour and would provide the means to :
• Combat rising energy prices by harnessing Perpetual sources of Energy - Wind, Solar, Water and Geo-Thermal Energy
• Virtual ZERO Global Warming
• Achieve Freedom and Insulation from Crude Oil Price fluctuations
• Self Reliance, since Renewable Energy Generation can be set up at point of usage, thereby reducing Transmission
Losses and Pilferage
• Increase bottom lines due to guarantee in meeting production schedules, minimal loss of productive time and fixed price of energy
Why Renewable Energy
Living in harmony with Nature
Living in harmony with Nature Solar Water Heaters – Evacuated Tube Collectors
Living in harmony with Nature Domestic Solar Water Heaters Consumption Pattern
Living in harmony with Nature Domestic Solar Water Heaters Generation Deficit Pattern
Living in harmony with Nature Challenges in Implementing Solar Thermal in Buildings
• As seen from the previous charts, the Domestic Hot Water Requirement Peak does not match with the generation
peak
• Storage of Thermal Energy is not used
• A lot of generated energy is wasted through overheating and therefore steaming due to lack of demand at generation peaks
• Very little control on the temperature and availability
• Due to lop-sided generation and utilization, hot water availability is largely on first come first served basis
• Lack of terrace areas to cater to the complete demands of the building
Living in harmony with Nature
Living in harmony with Nature
• Phase Change Materials (PCM) are hydrated salts / organic mixtures that have capacity to store large amount of heat in the form of Latent Heat.
• This Latent Heat is absorbed or released when the materials change state from solid to liquid or liquid to solid.
• The PCM retains its latent heat without any change in physical or chemical properties over thousands of cycles.
• Various specific temperature PCM’s are commercially available in the market for various applications.
What are Phase Change Materials
PCM packed in HDPE/PP nodules
Living in harmony with Nature Properties of a Typical Phase Change Material
Pluss Polymers Pvt. Ltd.www.pluss.co.in
Living in harmony with Nature Thermal Storage using Phase Change Materials
Building Flats/ Apartments
Building Flats/ Apartments
Building Flats/ Apartments
Building Flats/ Apartments
Living in harmony with Nature
Living in harmony with Nature CASE STUDY – 200m Tall Building
The Proposed Residential Project is spread over 365,735 sq.ft of land and is located Central Mumbai.
The Project has the following features: G + Podium floor(5nos) + atrium +
59floors with 2BHK, 3BHK and 4BHK flats and 5BHK (Penthouses)
Sale Building having height of approximately 240.7m
Living in harmony with Nature CASE STUDY – 200m Tall Building
BASIC PROJECT DATA : Built-up Area : Approximately 44,700 sqm Terrace Area : About 400 sqm in two levels Total Flats : 148 (Mix of 2BHK, 3BHK, 4BHK &
Penthouses) Expected occupancy : 1100 Total Water Requirements : 140,000 litres/day Hot Water Requirements : 55,000 litres/ day
Living in harmony with Nature CASE STUDY – 200m Tall Building
CONSTRAINTS IN IMPLEMENTING RENEWABLE ENERGY : Limited Terrace Area (400sqm in two levels) This can only accommodate provide 7,000 litres solar
Water heater Total Requirement was for 55,000 litres
Living in harmony with Nature
OH Hot Water Tank
ZON
E –
1
ZON
E –
3
Gr. Floor
36th Floor
56st Floor
58th Floor
38th Floor
37th Floor
Terrace Floor
68nd Floor
OH Domestic Water Tank
18th Floor
19th Floor
Solar Hot Water Distribution Schematic
57th Floor
ZON
E –
4
PCM Storage Tank
PCM Storage Tank
PCM Storage Tank
ZON
E –
2
Living in harmony with Nature CASE STUDY – 200m Tall Building
SOLUTION IN IMPLEMENTING RENEWABLE ENERGY : Only Solar Thermal Collectors of 400sqm installed A small buffer vessel is located at the terrace level for
directly drawing heat energy from collectors (conventional thermo- siphon)
Three Intermediate PCM Tanks of about 20m3 at three levels installed
Thermostat controlled Circulating pumps use to capture store heat in the intermediate tanks
Living in harmony with Nature
Living in harmony with Nature INDUSTRIAL PROCESS HEATING - REQUIREMENTS
Phase Change Materials suitable for the processes under consideration can be selected for energy storage.
Living in harmony with Nature
Tejwant Navalkar : +91-9821411436 [email protected]
Contact Details
Tejwant NavalkarEngineering & Renewable Energy Solutions
Your Partner
in
Designing For eXcellence www.dfxsystems.org
Tel: 91-22-2422 2664
Living in harmony with Nature