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A type of chiller powered by heat provided by steam or hot water or by waste heat.
Absorption chiller
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An interface used to integrate existing and new technologies.
Application programming interface (API)
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A measurement taken at the starting point to use for comparison.
Baseline
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Reference point or metric against which process, performance, and/or quality can be measured.
Benchmark
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Process of comparing processes, performances and/or quality against practices of the same nature, under the same circumstances and with similar measures.
Benchmarking
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The build-up of algae, fungi, and/or bacteria on surfaces or in pipes.
Biofouling
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Water from toilet fixtures, dishwashers, and kitchen sinks. This is also called foul drainage.
Black water
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A space planning tool used for estimating population size and interaction in a two- or three-dimensional format. It shows the horizontal boundaries of rooms and spaces, often overlaid on building core and shell plans.
Block plan
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An on- or off-site facility system used to generate hot water or steam.
Boiler
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Maintenance that happens after machinery shuts down due to failure or breakage.
Breakdown maintenance
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A space planning tool that is used to show the relationships of departments or functions in an organization as well as the importance of the relationships.
Bubble diagram
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A facility information system that monitors and controls a number of facility systems, including mechanical, electrical, plumbing, HVAC, lighting, security, and surveillance.
Building control system (BCS)
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A collaboration methodology, building life-cycle support tool, and class of software designed for open data interchange in a standards-based machine-readable format to enable modeling of a new or existing facility and easy access to data on current and historical configurations of a facility's spaces and systems. Its data can be used seamlessly in every part of a facility's life cycle of planning, design, construction, and operations and maintenance.
Building information modeling (BIM)
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A facility information system that monitors and controls a facility’s electrical equipment (HVAC, lighting, fire, security). [Also called a building automation system.]
Building management system (BMS)
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A coordinated set of components that are expected to achieve clearly predefined performance criteria. These include the critical technical components within a facility.
Building system
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A type of chiller that uses a vapor compression cycle to chill water and reject any heat.
Centrifugal chiller
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A type of facility system used to generate cold water for cooling of equipment or facilities or for occupant use.
Chiller
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Planning, reconfiguring, and coordinating movement of personnel into and out of workspaces.
Churn management
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An overarching system of a group of applications that work together to support facility management.
Computer-aided facility management (CAFM)
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Use of diagnostic tools, sensors, or regular inspections to log current conditions or outputs of facility systems, furniture, finishes, equipment, vehicles, and the building envelope and adjust the maintenance schedule accordingly to reduce risk of failure, improve efficiency, or maintain aesthetics. Also known as predictive or conditional maintenance.
Condition-based maintenance
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Ventilation control strategy in which air is fed in at a constant rate to maintain the same airflow output.
Constant volume systems
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An energy metering term related to the amount used in a given period of time.
Consumption
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Heat-removal devices that circulate warmer water with cooler air to reduce the water’s temperature.
Cooling towers
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An action taken to improve an observed output failure or replace a failing component or part. It is performed to correct an issue and return the equipment to optimal operation.
Corrective maintenance
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1) Stated requirement for a service or product to be delivered.
2) An energy metering term related to the average highest amount of energy a meter registers in a 15-minute period.
Demand
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An energy metering term related to an additional fee.
Demand charge
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A ventilation control strategy in which system requests are based on demand, supplying the right amount of air to the right place at the right time. [Also called mechanical ventilation.]
Demand-controlled ventilation
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An energy metering term related to what the organization can gain by reducing demand during peak times.
Demand-response incentives
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A type of energy market in which utilities do not own the generation or transmission; they are responsible only for distribution, operations, and maintenance from the grid connection to the meter.
Deregulated market
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A type of building control system that converts data signals into a digital format to be managed through a computer and software. Customizable signal outputs are sent from the computer to directly control a process or equipment (such as an HVAC unit).
Direct digital control (DDC)
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Situation in which a property owner grants limited access to a property.
Easement
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A type of building control system that integrates air-based and electrical technologies into one system, where compressed air is converted into an electrical signal and a computer controls equipment start and stop functionality (such as an HVAC unit).
Electro-pneumatic computerized system
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Unplanned maintenance done to restore critical installations to working order to prevent major consequences to the workforce or facility.
Emergency maintenance
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A computer-aided tool to monitor the electric grid in order to optimize system performance. [Also called an energy management control system (EMCS).]
Energy management system (EMS)
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A measure of facility energy use efficiency found by dividing annual building energy consumption in mega-joules (MJ) or thousands of Btus (KBtu) by the building area in square meters or feet.
Energy use intensity (EUI)
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Commodity markets that deal specifically with the trading and selling of energy, such as electricity and natural gas.
Energy markets
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The openings in a building such as doors and windows or skylights.
Fenestrations
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A planning tool used to predict a future event or trend.
Forecasting
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Water from lavatory sinks, laundry, and showers. This form of wastewater can be treated and reused on site.
Gray water
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The area of a building measured from outside the exterior walls; often referred to as the building footprint.
Gross external area
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The whole enclosed interior area of a building, measured from wall to wall on each floor, including areas occupied by internal walls, partitions, stairwells, etc.
Gross internal area
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A positive displacement compressor that uses two rotors to compress the air, resulting in quiet operation.
Helical rotary screw compressor
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Work arrangement in which multiple people are assigned to the same workstation; this could involve shift workers, job sharers, or part-time employees.
Hotdesking
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A workspace that is bookable by the hour.
Hoteling
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A ventilation control strategy that provides a comfortable indoor environment using a blend of the natural and mechanical strategies.
Hybrid ventilation
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A facility that uses technology to simultaneously reduce costs over time while increasing performance, often using a shared network.
Intelligent buildings
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Measure that provides essential information about performance.
Key performance indicator (KPI)
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The rate of electricity being used in large volume, either at a point in time or over time. One kW is equal to 1,000 watts. Kilowatt-hours (kWh) are calculated as kilowatts multiplied by hours.
Kilowatts (kW)/kilowatt-hours (kWh)
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Average load divided by peak load for a particular period of time.
Load factor
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A measure of the amount of brightness or visible light from a light source.
Lumen
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The technical activities, planned or reactive, needed to keep a facility's systems operational and in good working order.
Maintenance
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The rate of power measured as the output from a power plant. One is equal to 1,000 kW or 1,000,000 watts.
Megawatts
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A ventilation control strategy which requires an open floor plan and operable windows.
Natural ventilation
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The gross internal area minus lobbies, plant rooms, toilets, columns, stairs, and elevators/escalators.
Net internal area
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The total occupiable floor space in a building that may be leased or rented to tenants, usually somewhere between the net internal area and the net usable area. It usually excludes common areas such as elevators or stairways.
Net lettable [rentable] area
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The net internal area minus any areas that cannot be used for the purposes of space planning, such as areas behind doors and narrow gaps between columns and walls.
Net usable area
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Activities performed by the facility management team, to maintain and improve occupant satisfaction, safety and productivity.
Occupant services
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An energy metering term related to the time period when demand is low.
Off-peak hours
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An energy metering term related to the time period when demand is highest.
On-peak hours
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Work practices required to operate a facility's services and systems.
Operations
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All of the services, processes, workflows, and tools required to assure that the built environment functions as designed and constructed. It encompasses all activities necessary for the assets (structure, systems and equipment, and occupants/users) to perform their intended functions.
Operations and maintenance (O&M)
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A type of building control system that is air-based. It uses air pressure to signal other equipment (such as an HVAC unit) to start or stop.
Pneumatic system
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The ratio of real power flowing to the load versus apparent power available in the circuit. The values can range from -1 to 1.
Power factor
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A predetermined plan to perform work or replace parts known to deteriorate before the component fails, increases breakdown risk, reduces efficiency, or creates a poor aesthetic. [Also called planned preventive maintenance or cyclical maintenance.]
Preventive maintenance
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The review, retention, archiving, and disposal of records.
Records management
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A type of energy market in which the utilities own the flow of energy, and it is controlled all the way from generation to the meter.
Regulated market
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A type of condition-based maintenance that focuses on a defined maintenance procedure for inspecting, monitoring, and reporting regularly on major building systems (like HVAC or building engineering installations).
Reliability-centered maintenance (RCM)
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Actions required to return to operating condition after breakage or damage.
Repair
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Actions required to install a new or functioning element for a non-functioning one.
Replacement
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Mineral build-up on surfaces that reduces heat transfer efficiency or can clog pipes.
Scale
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An arrangement where a third party owns, operates, and maintains the photovoltaic system.
Solar power purchase agreement (SPPA)
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The efficient utilization and control of space occupied by an organization.
Space management
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A space planning tool used for estimating population size and interaction in a two- or three-dimensional format. It represents the vertical plane for a building floor and shows how functions are placed on each available level.
Stacking plan
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A desired level of future performance.
Target
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A method of creating workspaces for small groups and for breakouts and team activities.
Team space
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Activities related to the building site and structure, building systems and components, and managing, monitoring, and evaluating building system performance.
Technical services
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The study of the physical contours of the land and elements in their current state. It includes slope, elevation, and any irregularities that can be found on the surface of the land.
Topography
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A type of condition-based maintenance that strives to achieve perfect production—zero defects, zero breakdowns, and zero accidents in all functional areas of the organization. It emphasizes a proactive approach to equipment maintenance to maximize operational efficiency and increase production.
Total productive maintenance (TPM)
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Maintenance which occurs after a full or partial failure. It is reactive, and it usually requires immediate attention and fast resolution.
Unplanned maintenance
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Techniques to control the utility services required to operate a facility, including energy and water.
Utility management
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Ventilation control strategy in which the amount of air is varied by zone; the fan adjusts to meet the requirements of the zone.
Variable volume systems
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The byproduct of other uses of water. (Synonym: sewage)
Wastewater
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The rate at which electricity is used over time (i.e., hours). This is the consumption.
Watt-hours
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The rate at which electricity is used at a single point in time (not over time). This is the demand.
Watts
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Methods of coordinating daily, reactive, preventive, and replacement/repair facility management tasks; the different tasks; the cost savings derived from a rigorous preventive management schedule.
Work management
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A formal record of the effort required to maintain a facility in an optimal operating condition.
Work order
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Single point where all facility work requests are received, prioritized, tasked, coordinated, and evaluated.
Work reception center (WRC)
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Location containing furniture and supporting equipment (including telephony, IT and power connections), specifically designed or suitable for work-related activities and is suitable for permanent use.
Work station
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Collected urine that is not contaminated with black or gray water.
Yellow water
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