Abstract: A vacuum insulating glazing unit with an infrared reflecting coating, having a first glass pane with a thickness Z1, bearing the infrared reflecting coating on the inner pane face, and an energetical absorptance EA1; a second glass pane with a thickness Z2 and an energetical absorptance EA2; a set of discrete spacers between the first and second glass panes maintaining a distance between the two glass panes and forming an array with a pitch ?; a hermetically bonding seal, sealing the distance between the two glass panes over a perimeter thereof; an internal volume, V, defined by the two glass panes, spacers and closed by the hermetically bonding seal; where Z1>Z2 and ?EA?0.0033 ?Z2/mm2?0.0468 ?Z/mm+0.7702; where ?EA=EA1?2EA2, and Z1?5 mm, Z2?3 mm, ?Z=Z1?Z2?1 mm, and 10 mm???35 mm.

Abstract: A vacuum insulating glazing unit includes a first infrared reflecting coating and a second infrared reflecting coating. A first glass pane has a thickness, Z1, and an energetical absorptance EA1, and bears the first infrared reflecting coating on its outer pane face. A second glass pane has a thickness, Z2, and an energetical absorptance, EA2. A set of discrete spacers is positioned between the glass panes and forms an array having a pitch, ?. An internal volume, V, is defined by the first and second glass panes and the set of discrete spacers, and has a vacuum of absolute pressure of less than 0.1 mbar. The second infrared reflecting coating is borne on a glass pane face that faces the internal volume, V. The first glass pane is thicker than the second glass pane (Z1>Z2), and in that ?EA?0.0029 ?Z2/mm2?0.041 ?Z/mm+0.6375.

Abstract: A vacuum insulating glazing unit extends along a plane P, defined by a longitudinal axis X, and a vertical axis Z, and has a length L, and a width W. The glazing unit includes a first glass pane with an inner pane face and an outer pane face, with a thickness Z1, and an energetical absorptance EA1. A second glass pane has an inner pane face and an outer pane face, with a thickness Z2, and an energetical absorptance EA2. The second glass pane bears an infrared reflective coating on its inner pane face. A set of discrete spacers is positioned between the first and second glass panes and forms an array having a pitch ?, between 10 mm and 35 mm. A hermetically bonding seal seals the distance between the first and second glass panes. The first glass pane is thicker than the second glass pane (Z1>Z2).