1) PLUSS is an Indian company that develops phase change materials (PCMs) for thermal energy storage. 2) It offers various types of PCMs, such as hydrated salts, organic PCMs, and microencapsulated PCMs, that can store large amounts of heat energy and release it at constant temperatures. 3) PLUSS has applied its PCM technologies to applications like cold storage, cold transportation, building energy efficiency, and HVAC to provide thermal energy regulation and reduce energy costs.

1. PLUSS® www.pluss.co.inPLUSS® www.pluss.co.in
PLUSS
®
Synergism at work
Phase Change Materials
A brief overview
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2. PLUSS® www.pluss.co.in
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About Pluss
 Our strengths:
 Indigenous “home grown” technologies
 Cost effectiveness
 Technology providers:
 Thermal Energy Storage
 Plastics Technology
 We believe in
 Consistent development
 Pragmatic development

3. PLUSS® www.pluss.co.in
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About Pluss
 The stakeholders
 Tata Innovation fund
 Private equity fund that has invested US$ 2.7 million.
 Promoters
 Founded by Mr. Devendra Jain and Mr. A.K. Mehta
 Employees
 A family of 50, and growing.
 Customers
 International
 Domestic

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Pluss PCM: The timeline

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Pluss PCM: The range
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Micro-
encapsulate
d PCM
Organic
PCMs
Form
stable
PCMs
Hydrate
d salts
Hydrated salts based
PCMs are available for the
entire gamut of functional
temperatures
Organic PCMs,
microcapsules and Form-
stable PCMs available in
the mid-temperature range
Wide temperature
range: -36 ⁰ C to 89 ⁰C

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 Innovations :
 Suspension of nucleating agent – patents pending
 Highly conductive HDPE– Overall heat transfer coefficient is
as high as metals
 Packaging technology
 Reinforced Form-stable PCM-patents applied
 Our future targets
 Application oriented PCM technology development
 Form stable PCMs
 Temperature extrema of Pluss PCMs
Pluss: Consistent Innovation
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7. PLUSS® www.pluss.co.in
Pluss PCM: We made it possible in India!
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Special Jury Recognition Award for New/Innovative Product Design
BryAir / ISHRAE / ASHRAE – February 2006 at ACREX, New Delhi.

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ACREX - 06
GBC - 05
Pluss PCM: We made it possible in India!

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The Plasticon Award winner– Plastindia ‘09
PLUSS® - Winner of the “Innovative Infrastructure Product Award (Plastics
products in Building, Telecom, Healthcare, & Transportation)”
Pluss PCM: We made it possible in India!

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Phase Change Materials (PCMs) &
the three questions
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Why
□ Prolongs the duration at which temperatures(cold/hot)
need to be maintained without external source.
□ Saves energy
□ Saves cost
□ Human comfort
□ A green concept – reduces pollution
□ Ability to shift peak power loads to off-peak hours (a
storage device)
□ As a back-up for temperature critical applications
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How
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What
 Materials that can store large amount of heat energy in
the form of latent heat
 Release/absorption of heat at almost constant
temperature
 Also called Passive cooling materials.
 Heat Absorption / Release process repeatable over a
substantial number of cycles (~ 3000 or more)
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PCM Characteristics
□ Very high Latent Heat Capacity
□ Tailorable for specific
temperature requirements
□ Easy handling; can be filled in a
variety of encapsulations
□ Cheap & very stable over long
durations
□ Repeatable phase change
cycles
□ Low / No flammability
□ Non Toxic and Non
combustible
0
50
100
150
200
250
Stone Plastic Wood Water PCM
For T = 15 K
PCM’s Latent heat = 225 kJ / kg
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Latent Heat Storage: Components
□ PCM suitable for application temperature
□ Encapsulation of PCMs
□ A heat exchange surface for heat transfer between
PCM and heat source/sink
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PCM: Polymer Encapsulations
HDPE / PP Balls (via blow
moulding)
Boilers
Chillers
Solar water heaters
HDPE Profiles (made via extrusion)
Buildings (Residential/ & Commercial)
Telecommunication shelters
Multilayered Pouches (via film
sealing)
False ceilings
Ice boxes
Pharmaceutical transport
HDPE Bottles (via blow
moulding)
Cold – Transportation
Cold - Storage
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PCM: Applications
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Pluss PCMs in… Cold Storage
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Frost in – 400 & 600 ml

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Pluss PCMs in… Cold Storage
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Rapid Milk Chiller
From
Prometheon Power, USA
Uses
FROST PCM in 43 mm Balls
For Indian/African Rural Market

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Pluss PCMs in… Cold Transportation
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Pluss PCMs in… Buildings
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Pluss PCMs in… Buildings
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Pluss PCMs in… Buildings
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Pluss PCMs in… HVAC
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Pluss PCMs in… Human Comfort
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Encapsulation for Reefer Trucks
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Source: Internet

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Path Forward: Form Stable PCM
□ Form-stable PCM: An alternate approach
 PCM infused in open-cell foams
 Resolves stratification
 Applicable to hydrated salts as well!
 Commercial challenges
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Application development: Pluss R&D
 Conventional method: PCM filled in pouches and
panels.
 Suffers the dangers of leakage
 Novel PCM material: solid even 10 ⁰C above transition
temperature.
 Form-stable PCM
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Form stable PCM - A Substitute to
traditional PCM

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PCM TES SYSTEM DESIGN
STORAGE ~20TRH /
cu meter
Uniform charging
and Discharging
Higher heat transfer
area for fluid
Lesser working fluid
requirement
PLATE
ENCAPSULATIONS
PCM
ENCAPSULTION

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Ref: Heat and Cold Storage with PCM, Harald Mehling, Luisa F. Cabeza, Springer Publication,
Geometry and Accessible Volume for
Phase Change

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PCM : Dark gray
Heat transfer fluid : Bright
gray
Ref: Heat and Cold Storage with PCM, Harald
Mehling, Luisa F. Cabeza, Springer Publication,
Geometry and PCM

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The location of phase thickness S with time relates the heat flux (dQ/dt) to the
geometric dimensions.
The heat flux (dQ/dt) / power of cooling decreases from plane/rectangular
geometry to cylindrical geometry and to spherical geometry.
Ref: Heat and Cold Storage
with PCM, Harald Mehling,
Luisa F. Cabeza, Springer
Publication,

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CONTROL ALGORITHM
5/23/2013
LOAD
FORECAST
SYSTEM
CHARACTERIS
TICS
POWER
TARIFF
• SEB TARIFF
• DG USAGE
• RENEWABLE
SOURCE
• TES TYPE
• PHYSICAL
CHARACTERISTIC
S
• STATISTICAL
DATA
• LOAD FACTORS
• WEATHER DATA
OPTIMIZATION
PROGRAM
OPTIMAL DAILY
OPERATING
STRATEGY
• Forecasts Day Ahead Load for the Building
• Minimizes Daily Operating Cost of HVAC
(c) Thermal Energy Service Solutions
Pvt. Ltd.

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5/23/2013
(c) Thermal Energy Solutions
Pvt. Ltd.
TURNKEY INSTALLATION

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PLUSS TESSOL ADVANTAGE
5/23/2013
• More TRH / cu. m of
space (~20%)
HIGHER
ENERGY
DENSITY
• Lower approach temp
(3-4oC)
EFFICIENT
HEAT
EXCHANGER
• Proprietary Optimization
Algorithm
OPTIMIZED
OPERATING
STRATEGY
• -37 to +80C PCM
applications
WIDE TEMP
RANGE
Lower Area
Requirement
Lower
Energy
Consumptio
n
Multiple
Applications
CUSTOMER
BENEFIT
PRODUCT FEATURES

36. PLUSS® www.pluss.co.in
Thank
You
For your attention
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