Abstract: A curtain wall or roof element, with built in solar panel or heat absorbing layer, and at least one blower for air circulation inside the enclosed device, one or more temperature sensors monitoring the temperature inside and outside the device and a microcontroller activating the blower according to predetermined program to heat or cool the room enclosed by the device. If solar cells or panels are used they will generate electrical power and heat. It is the purpose of this invention to increase the energy harvesting coefficient from the sun's radiation by utilizing the absorbed heat for increasing the temperature in a space enclosed by said device, moreover the smart configuration of the curtain wall will enable to change the system's isolation characteristics by changing its U values. U value of a curtain wall describes the heat isolation characteristics of the device in a numerical form.

Abstract: There are disclosed a honeycomb structure which is preferably usable as a filter, for example, for trapping particulates in an exhaust gas of an internal combustion engine, boiler or the like or for filtering liquids such as city water and sewage and in which an increase of a pressure loss at a use time is inhibited. A honeycomb structure 1 comprises: two end surfaces 5 consisting of first and second end surfaces; a porous body 2 in which a plurality of fluid channels 3 extending to a second end surface 5b from a first end surface 5a are formed; and plugging members 4 for plugging end portions 6 on end surfaces 5 side of the fluid channels 3.