Essential amino acids. There are nine amino acids that your body canât make. They are called essential amino acids, meaning you must have them to live. They are found in foods like milk, eggs and meat and also a wide variety of plants. This is part of why you canât survive on a diet of just corn chips for very long.
Definition of PLENUM. 1. a: a space or all space every part of which is full of matter b: an air-filled space in a structure; especially: one that receives air from a blower for distribution (as in a ventilation system). 2.. a: a space or all space every part of which is full of matter b: an air-filled space in a structure; especially: one that receives air from a blower for distribution (as in a ventilation system).
Supply Air Plenums. 1  These supply air plenums are sheet metal boxes that attach to the outlet of a furnace or air handler and are used as a central manifold for other ductwork to connect to. 2  As the air blows from the furnace or air handler, it flows through the supply plenum and any ductwork attached to it. These return air plenums are the ducting that attach to a furnace for the return air to flow through, and are used as a central manifold for other return air ducting. 2  These sheet metal transition kits are used to make a custom fabricated duct to connect a new furnace or air hander to existing ductwork.