NRG | Energy Efficient

NRG Energy Efficient Glass Range in 3 variants of single NRG 1 and doubled glazed NRG 2

Select the correct NRG product to suit your project requirements.

1 Performance Specifications

NRG Lite 1-                   performance data based on 6.38mm Clear Low E
NRG Intermediate 1-   performance data based on Neutral 60 Low E
NRG Optimum 1-         performance data based on Neutral HL Low E

2 Performance Specifications

NRG 2 Lite-                  performance data based on 6.38mm Clear – 12mm Air Gap – 6.38mm Clear Low E
NRG 2 Intermediate-  performance data based Neutral 60 Low E – 12mm Air Gap – 6.38mm Clear
NRG 2 Optimum-        performance data based on Neutral HL Low E – 12mm Air Gap – 6.38mm Clear

Definitions:

VLT

Visible Light Transmission is simply the measurable amount of solar visible light (daylight) that travels through a glazing system. A glazing system with a high VLT allows most of the daylight to pass through while a lower VLT window restricts the majority of light from entering a room.

U-Value

The U-value of a window is a measurement of the rate of heat loss indicating how well your windows are keeping valuable heat in. It is expressed as Watts per square meter Kelvin W/m2 K. The lower the U-value the better the thermal performance of the glass.

SHGC

The Solar Heat Gain Coefficient is the fraction of incident solar radiation admitted through a window, both directly transmitted and absorbed and subsequently released inward. SHGC is expressed as a number between 0 and 1. The lower a window’s solar heat gain coefcient, the less solar heat it transmits.

RHG

The Relative Heat Gain is the amount of heat transferred through glass or a glazing system, taking into account radiative (solar) heat gain and thermal conductive heat transfer.