Abstract: A shell system for a building, facilitating internal bottom-up flow of air inside the shell system, the shell system includes a plurality of modular thermal panels, and connecting means for interconnecting the plurality of modular thermal panels or a portion thereof Each of the modular thermal panel includes an enclosed frame having two side faces, a top face and a bottom face, wherein two openings are formed in the frame's faces: a sealingly enclosed internal face and a sealingly enclosed external fac wherein an inner gap, filled with air, is formed between the internal face and the external face. At least one frame-opening is formed in each of the faces of the frame, allowing air to flow between adjacent modular thermal panels, that are sealingly interconnected, while allowing the inner air flow.

Abstract: A shell system for a building, facilitating internal bottom-up flow of air inside the shell system, the shell system includes a plurality of modular thermal panels, and connecting means for interconnecting the plurality of modular thermal panels or a portion thereof Each of the modular thermal panel includes an enclosed frame having two side faces, a top face and a bottom face, wherein two openings are formed in the frame's faces: a sealingly enclosed internal face and a sealingly enclosed external fac wherein an inner gap, filled with air, is formed between the internal face and the external face. At least one frame-opening is formed in each of the faces of the frame, allowing air to flow between adjacent modular thermal panels, that are sealingly interconnected, while allowing the inner air flow.