Energy & Atmosphere Flashcards
What is the ANSI? What does it stand for?
American national standards institute: the organization that oversees the creation, promulgation, and use of thousands of standards and guidelines that directly impact businesses in nearly every sector. ANSI is also actively engaged in accrediting programs that assess conformance to standards, including globally recognized cross-sector programs such as the ISO 9000 (quality) and ISO 14000 (environmental) management systems
What is ASHRAE 90.1?
a standard that sets the minimum requirements for energy-efficient design of most buildings, except low-rise residential buildings, by offering, in detail, the minimum energy-efficient requirements for design and construction of new buildings and their systems, new portions of buildings and their systems, and new systems and equipment in existing buildings, as well as criteria for determining compliance with these requirements
What is a Btu?
British thermal unit: the amount of heat required to raise the temperature of 1 pound of liquid water 1F. This standard measure of energy is used to describe the energy content of fuels and compare energy use
What are building loads?
the amount of energy and the devices and systems that use energy in a building
What is carbon footprint?
the amount of greenhouse gasses and specifically carbon dioxide (CO2) emitted by something such as a company of the manufacture and transport of a product during a given period
What are carbon offsets?
a purchasable form of trade that funds projects that reduce greenhouse gas emissions, such as forest restoration, power plant and factory updates, or increases tot the energy efficiency of buildings and transportation
What is a chiller?
a machine that removes heat from a liquid via a vapor-compression or absorption refrigeration cycle. This liquid can then be circulated through a heat exchanger to cool air or equipment as required.
What is a CFC?
Chlorofluorocarbon: any of several simple gaseous compounds that contain carbon, chlorine, fluorine, and sometimes hydrogen, that are used as refrigerants, cleaning solvents, and aerosol propellants and in manufacture of plastic foams, and that are believed to be a major cause of stratospheric ozone depletion. CFCs are banned in many countries, including the US
What is Commissioning (Cx)?
verification after construction that a structure and its systems and subsystems meet project requirements as intended and designed
What is a commissioning authority (CxA)?
a third party contracted by a building owner who reports directly to the owner and oversees the incorporation of the design and energy goals throughout the lifetime of a project
What is demand response (DR) program?
a program offered by utilities that allow large energy users to reduce energy loads during peak energy usage times in exchange for reduced rates
What is energy star portfolio manager?
an EPA provided benchmarking system that is the most widely used in the US. The energy and water data for a building is entered into a web-based tool that then displays where the building type falls in whole-building energy use compared to other buildings of the same type. Greenhouse gas emissions are also measured
What is EUI? What does it stand for?
energy use intensity: a metric that expresses a building energy use as a function of its size
What is hydrochlorofluorocarbon (HCFC)?
a refrigerant used as a replacement for CFC refrigerants and propellants in aerosol canisters; considered to be less destructive to the atmosphere
What is hydrofluorocarbon (HFC)?
a refrigerant that is considered the long-term replacement for CFC and HCFC refrigerants since it consists of hydrogen, fluorine, and carbon but not ozone-damaging chlorine; it does, however, contribute a small amount of global warming
