BOMI - The Design, Operation & Maintenance of Building Systems, Part I Questions And Answers Graded A+

A change in a project is a made due to errors/emissions - Constructive change A condenser that consists of a welded steel shell containing a number of straight tubes fastened in tube sheets that close the shell - Shell-and-tube condenser A heat pump that takes heat from the outdoor air and rejects it to the inside space in the winter. In the summer, the reverse happens-heat from indoors in rejected outside. Most commonly found in residential and smaller commercial applications, due to being cheap to install. - Air-to-air heat pumps A metal that has poor acoustical properties - Aluminum A stone that is fireproof, requires little maintenance, but expensive - Slate A strategy that monitors heating and cooling loads in the building spaces and adjusts the discharge air temperature to the most efficient levels to satisfy the measured load. This works best with constantvolume systems. - Supply-air reset (SAR) A type of system that the airstream flows constantly through the ducts, and the temperature and humidity of that air varies - Constant-air-volume system A type of system where the air is controlled at a relatively constant temperature and moisture content. This system has sufficient static pressure, and has greater energy savings than constant-volume systems. - Variable-air-volume (VAV) system Air flows actually, in a straight line through the impeller - Axial flow fans Air flows radially, along the radius through the impeller - Centrifugal fansAir-conditioning systems can cool air using refrigerant that is directly fed into a copper coil - Direct expansion (DX) system An owner disrupts work in a project - Disruptive change Architectural firm is hired and serves as the owners agent. Their primary responsibility is providing and managing the design and construction documents for the project; traditional method. - DesignBid-Build Between the owner and contractor wherein the owner agrees to pay the contractor a specified sum of money for completing a project consisting of a variety of specified items of work. Results in low construction costs with minimal change orders. - Lump Sum Contract Bringing a property into conformity with changes in style, whether interior or exterior - Modernization Commonly used in household refrigerators - Natural-draft Air-cooled condensers Compression and tensile strength mortar - Type S Determined by the pressure differential induced by the compressor. Heat is absorbed in the evaporator, raised to a higher temperature by the compressor, and a given off by the condenser - Rate of evaporation Devices that convert signals from one medium to another - Transducers Due to this condenser being constructed with finned-tube coil, a fan with motor, and a casing, it eliminates the need for a cooling tower. - Forced-draft Air-cooled condenser Dynamic state - Pump runningEnabling one manufacturers controls to be programmed and operated from another manufacturers system - Interoperability Energize groups of electric heating elements in stages or steps to minimize temperature fluctuations - Step controllers High-compressions strength mortar - Type M In smaller sizes, the high speed backward-inclined and airfoil fans may increase and noise level. For the same volume of air, the lower speeds of _______________ is more desirable for smaller applications. - Forward curve fans Lime cement that hardens by drying out - Nonhydraulic Lime cement that mainly needs to dry out, but has some hydraulic properties - Semihydraulic Lime cement that sets by combining water - Hydraulic