How It Works

  Nirvana Insulated panels combine Reid's expertise in concrete anchoring technology with the science of heat transfer. Nirvana connector pins anchor the concrete panels on either side of the insulation layer to allow lifting, erection, and installation as a single piece. The internal concrete wall provides the structural strength and thermal mass, the insulation layer reduces the flow of heat energy into or out of this thermal mass, and the external wall provides physical protection to the insulation layer. By varying the thickness of each layer, different structural and thermal properties can be achieved. 
Contact Reid to determine the thickness of insulation to meet BCA requirements, and the spacings of Nirvana connector pins to ensure your Nirvana insulated sandwich panel remains in one piece throughout its’ long energy efficient life.

  Nirvana insulated panels employ an internal structural concrete layer, containing concrete lifting anchors, connection points, and other items. This is designed to meet the structural requirements of the building. The insulation layer and external concrete wythe is held tightly to this structural layer by Nirvana connector pins.

The Nirvana pin was developed utilising Reid’s expertise in concrete anchoring and connections, resulting in the simplest and most effective option for the production of concrete sandwich panels. The circular cross-section of the Nirvana pin ensures maximum shear loading performance regardless of pin orientation.
Nirvana connector pins possess a circular cross-sectional area, providing confidence that correct orientation of the pin during installation will not become an issue.  Connector pins which have a non-circular (such as rectangular) cross section must be installed in the correct direction to achieve their full loading capacity.  Reductions in load capacity of up to 70% can occur when connector pins of non-circular cross section are positioned in the wrong orientation in a sandwich panel. This dramatically affects the panels’ strength and integrity during production, transport, erection, and service life, and poses a serious risk for delamination of the outer concrete layer.
  Thermodynamics tells us that heat will always move from an area of high temperature to an area of lower temperature. Insulation works to reduce the thermal conductivity of the building envelope, which slows the transfer of heat energy to or from an internal living space. Its effectiveness at doing this, known as thermal resistance (R), is measured by dividing the thickness of material by the intrinsic thermal conductivity of the insulation. Therefore, the higher this “R-value”, the better the insulation retards the flow of heat energy.

With dependence on insulation type and thickness, the building fabric can be designed to achieve a specific R-value which will provide comfortable indoor temperatures whilst minimizing energy inputs from heating and cooling equipment.
  Concrete has one very important advantage over most other building materials – high specific heat capacity. This means that it requires much more heat energy to raise its temperature than it does for other materials. This property is dependent on the material, its density, and its thickness, and is sometimes referred to as “Thermal mass”. Just as a heavy object (large mass) requires much force or energy to change its’ position, a large thermal mass requires much heat energy to change its’ temperature.
The thick internal structural wall of a Nirvana panel provides a large thermal mass, which functions as a heat sink to “flatten” temperature movements indoors. Air has a low thermal mass, so if the concrete wall heats up to unacceptably high levels, it will radiate heat energy into the internal air space, quickly raising the temperature. This is why it is important to protect this internal wall from conductive heat transfer through the building fabric and radiative heat transfer from sunlight. The heat transfers that do occur through the building envelope are so small that they take a very long time to heat up the thermal mass, by which stage the external temperatures have reversed and the heat begins to flow in the other direction. Small heating and cooling duties moderate the internal temperature where it strays outside the comfort zone during extreme external conditions.
To illustrate how Nirvana insulated panels can save money in initial capital costs and
during normal operation, the following case study of our very own Canningvale office
in Western Australia provides a snapshot on the savings achieveable even in a small
office building.

 Item Nirvana Panels  Standard Panels  Cost Savings 
 Concrete panels  $17,000 $12,000  - $5,000
 Capital A/C Cost $15,000 (15HP)  $25,000 (25HP)  + $10,000 
 Air Conditioning Running Costs
 (10 years)
$24,000  $48,000  +$24,000 
 TOTAL (over 10 years)  $56,000 $85,000   $29,000