Masoud Rasouli Larmaeie - Architectural Technology, Architecture and Urbanism Department, Tabriz Islamic Art University, Tabriz, Iran
Majid Ahmadnejad Karimi - Architectural Technology, Architecture and Urbanism Department, Tabriz Islamic Art University, Tabriz, Iran
Mahshid Zaresharif - Architectural Technology, Architecture and Urbanism Department, Tabriz Islamic Art University, Tabriz, Iran

Cost and high energy consumption has always been one of the major concerns of the world in the past decades. Since Building envelopes are the boundary layer between the interior and exterior of the building, they have a great influence on the reduction of energy consumption. Integrated evacuated tube collectore generate solar heat at high temperature level, and provide even, semi-transparent light and protection against the sun for indoor areas without impairing the view. The system is particular suitable for offices and other orginal buildings with a larg number of windows. It can olso be used as an architectural design elemnt for façades.In this paper we attempt to survy evacuated collector tubes as an new innovative technology in solar systems.