Chapter 8 - Energy And Atmosphere Flashcards
What is ASHRAE 90.1-2010?
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 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 the American National Standards Institute (ANSI)?
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 standards, including globally recognized cross sector programs such as the ISO 9000 (quality) and ISO 1400 (environmental) management systems.
What is the British thermal unit (Btu)?
The amount of heat required to raise the temperature of 1 pound of liquid waster 1 degree Fahrenheit. This standard measure of energy is used to describe the energy content of fuels and compare energy use.
What is the building envelope?
The interface between the interior of a building and to outdoor environment. Reducing the transfer of hot or cold air through the building envelope is important for energy efficiency measures. Insulation, air sealing, and windows can each play an important role in minimizing heat transfer.
What is the building footprint?
The area if ground that the building occupies and defined by its perimeter.
What are building loads?
The amount of energy and the devices and systems that use the energy in the building.
What is a carbon footprint?
The amount of greenhouse gases and specifically carbon dioxide emitted by something such as a company or the manufacture and transport of a product during a given period.
What are carbon offsets?
A purchasable for of trade that funds projects that reduce greenhouse gas emissions, such as forest restoration, power plant and factory updates, or increases to the energy efficiency of buildings and transportation.
What is a chiller?
A machine that removes heat from liquid via a vapor-compression or absorption refrigeration cycle. This liquid can hen be circulate through a heat exchanger to cool air or equipment as required.
What is a chlorofluorocarbon (CFC)?
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 the manufacture of plastic foams, and that are believed to be a major cause of stratospheric ozone depletion. CFCs rare banned in many countries including the US.
What is commissioning (Cx)?
Verification after construction that a structure and it’s 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 the project.
What is a 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 efficiency?
Utilizing less energy to complete the same amount of work.
What is the Energy Star Portfolio Manager?
An EPA provided building 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 the same type. Greenhouse gas emissions are also measured.
