HDPE Panels Containing Phase Change Material

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INNOVATIONS - Packaging Innovations from across the Globe

Pluss Polymers Pvt. Ltd.

Posted on : 22 February 2009

Contact Person :

Samit Jain

Designation:

Director

samit@pluss.co.in

+91-124-4309490

+91-124-4309493

www.pluss.co.in, www.thermalenergy.co.in

HDPE PANELS CONTAINING PHASE CHANG MATERIAL

AESTHETICS - DESIGN

· This HDPE Panel is used to encapsulate Phase Change Material (mixture of inorganic chemicals) which is a thermal energy storage material that stores energy by its latent heat. This HDPE Panel is an extruded panel containing slots inside which gives mechanical support to the Panel and also make the Phase Change Material in small segment so that the energy transfer will be faster

· HDPE is chosen since it has moderate thermal conductivity, non polar in nature, non reactive to the chemicals that are used as Phase Change Material also cheaper in cost

· The challenges overcome include:

o Identification of the right raw material – HDPE – for packaging. The aim was to not use metals because of its corrosive nature. Stainless Steel is very expensive. At the same time good thermal conductivity is required. HDPE was modified with additives to increase its thermally conductivity further.

o Design of die for HDPE panel extrusion. This was done for the first time in the country.

o Design of sealing machines to seal plugs and caps on the panel to turn it into a container for the PCM.

o Design of testing mechanisms to check for leakage and efficacy of panels.

The following machines were designed in-house by PLUSS^® R& D personnel and fabricated at local machinery manufacturers in and around Delhi:

1. Cap Sealing Machine

2. Filling Setup (accessory)

3. Extrusion Die for Panel Extrusion

4. End Caps for converting panel into containers

While the product was totally developed by Pluss Polymers, marketing in the initial phase was facilitated by Acme Telepower Pvt Ltd.

COST BENEFITS / REPLACE

· Similar to this HDPE panel other encapsulations available that are in metals like Aluminium and stainless steel. HDPE panels are cheaper than these metal encapsulations and also HDPE’s overall thermal heat transfer coefficient is almost nearby value to these metals since its thickness is approximately 1-2 mm.

· For example:

o With 50 W/m².K convective heat transfer coefficient, the overall heat transfer coefficient for 1 mm thick HDPE encapsulation is 23.6 W/m².K and for Stainless Steel it is 25 W/m².K and for Aluminium it is 25 W/m².K.

o It shows that HDPE panel can easily replace the metals for this Phase Change Material encapsulation in thermal energy storage applications

OTHER FEATURES: RECOGNITION

1. Winner of "Innovative Infrastructure Product Award (Plastics in Building, Telecom, Healthcare, & Transportation)" Category

This HDPE panel was recognized as winner of the Innovative Infrastructure Product- category by Plasticon Award Committee during Plastindia '09

2. HDPE Panels – Recognised by ISHRAE/ASHRAE/BRYAIR award committee

This HDPE panel was recognized as one of the innovative applications for encapsulation to the energy storage materials during Acrex –‘06

3. International recognition – PCM Solutions, a US based company has approved of PLUSS^® products. PLUSS^® has entered into an agreement with them to sell these products internationally through them.
Their website is: www.pcm-solutions.com/products.html.

4. Coverage by Association of Energy Engineers, USA – www.aeecenter.org. The listing can be viewed online at http://www.energyvortex.com/pages/headlinedetails.cfm?id=2089

OTHER PRODUCTS FROM PLUSS^®
Pluss Polymers was incorporated in 1993 to commercialise the technology for grafted modified polymers and alloys and blends. OPTIM^® coupling agents and compatibilisers allow plastics manufacturers of world class quality products to OPTIMise their compound properties. ADNYL^® N series have been used in production of Nylon Films for packaging applications. These can be coextruded to produce desired multi layer films. For more info, please visit www.pluss.co.in