| 摘要 |
FIELD: civil engineering, device is used for heat protection of window openings in walls with retaining transparency. SUBSTANCE: device has screen consisting of two sheets made of transparent polymeric material located one after another with creating internal air space between them which is divided by horizontal partitions made of light or transparent material. These partitions connect both sheets and divide air space into several parts within height limits of window opening. Both sheets are able to corrugate. Lower horizontal partition is fixed, and upper one is lifted through rope-and- pulley system or they can be arranged vice versa. EFFECT: high efficiency. 1 cl, 1 dwg |
