Quadrangular space of 4m x 4m and 4m high ground - centered 04 window openings; one on each wall of the space. - One of the windows should be geared 47.19 ° West. - The window sill is 1.00m - must be raised visors (Minimum 04) indoors or outdoors; solar income to form a cross shape on the floor of our room; for the day May 21 at 2:00 pm. - The project location is in Chiclayo and must consider its latitude 6.75