Project Haystack

Alternating current electricity

AC Electricity meter

Frequency of alternating current

Integral of active-power over time

Active power or real power

System for air treatment to control its temperature, humidity, cleanliness, and distribution to meet the requirements of a conditioned space

System consisting of one or more fans that remove air from the building

Entity inputs air which flows from another entity

Entity outputs air to other entities

System for moving air to maintain indoor thermal comfort and/or air quality

Dry bulb temperature

Rate of air movement as distance over time

System that supplies or removes air by natural or mechanical means to or from any space in order to provide outdoor air to the space

Integral of apparent-power over time

Apparent power is perceived magnitude of power due to the combination of active and reactive power

Barometric pressure exerted by the weight of the atmosphere

Water expelled from a system to remove mineral build up

Entity inputs blowdown water which flows from another entity

Entity outputs blowdown water to other entities

Concentration of formaldehyde (CH₂O) in the air

Greenhouse gas emission of methane (CH₄) into the air

Water cooled for use in HVAC and industrial processes

Entity inputs chilled water which flows from another entity

Entity outputs chilled water to other entities

Plant used to generate chilled water for cooling

System that circulates water in its liquid state below ambient temperature for cooling a space or process

Cooling process using energy from heat source such as hot water

Compression via a continuous flow of fluid through an impeller

Piston compressor driven by a crankshaft

Rotary screw compression

Concentration of carbon monoxide (CO) in the air

Concentration of carbon dioxide (CO₂) in the air

Greenhouse gas emission of carbon dioxide (CO₂) into the air

Water supplied to cold taps

Entity inputs condensate which flows from another entity

Entity outputs condensate to other entities

Water used used to remove heat through condensation

Entity inputs condenser water which flows from another entity

Entity outputs condenser water to other entities

System that circulates water in its liquid state for rejecting heat from a space or process

Panel housing controllers and networking gear

Relatively cool water without active chilling

Point with support to report a "real-time" current value

AC current phase angle

Current phase imbalance in a multiphase AC system

Magnitude of electrical current

Total harmonic current distortion

Actuator to regulate the flow of air

Direct current electricity

DC Electricity meter

System that circulates potable cold water in its liquid state for purposes other than space cooling and process requirements

System that circulates potable hot water in its liquid state for purposes other than space heating and process requirements

Tap water for drinking, washing, cooking, and flushing of toilets

Entity inputs domestic water which flows from another entity

Entity outputs domestic water to other entities

System that circulates potable water in its liquid state for purposes other than space conditioning and process requirements

Electrical current

Active power averaged over a rolling interval

Electrical energy consumed

Entity inputs electricity which flows from another entity

Electricity meter

Entity outputs electricity to other entities

Physical housing for electrical circuits, fuses, and breakers

Electrical energy consumed per unit time

System that generates, converts, distributes, and/or stores electricity

Electrical voltage, potential difference

Equipment that delivers electricity via EVSE ports to charging inlets located on EVs

Models the electrical connection between an evse-port and an EV charging inlet

Equipment that supports the delivery of electricity to charging inlets located on EVs

An EVSE port delivers electricity to a single EV charging inlet at a time

A system that supplies electricity to EVSE assembly equipment and its auxiliary loads

Motor used with a fan to create air flow

Meter to measure flow rate and total volume of fluid

Entity inputs fuel oil which flows from another entity

Entity outputs fuel oil to other entities

Entity inputs gasoline which flows from another entity

Entity outputs gasoline to other entities

Floor at ground level

Water present under the ground or from a well

Greenhouse gas emission of hydrofluorocarbons into the air

Historized point with a history log of timestamp/value pairs

Hot water used for HVAC heating or supplied to hot taps

Boiler which outputs hot water

Entity inputs hot water which flows from another entity

Entity outputs hot water to other entities

Plant used to generate hot water for heating

System that circulates water in its liquid state for heating a space or process

Equipment which adds moisture to air to increase humidity

Zone related to conditioning of a space's air temperature and quality

Sensed or controlled dimming level of electrical lighting

System designed to provide lighting

Zone related to lighting system

Total perceived light in all directions

Perceived light in a particular direction per unit solid angle

Water used used to makeup water loss through leaks, evaporation, or blowdown

Entity inputs makeup water which flows from another entity

Entity outputs makeup water to other entities

Cellular phone providing telecommunication over radio links

Greenhouse gas emission of nitrous oxide (N₂O) into the air

Entity inputs natural gas which flows from another entity

Entity outputs natural gas to other entities

Microprocessor device used to establish networks

Networking device used to route data between different networks

Networking device used to connect devices on the same network

Greenhouse gas emission of nitrogen trifluoride (NF₃) into the air

Concentration of ammonia (NH₃) in the air

Concentration of nitrogen dioxide (NO₂) in the air

Concentration of ozone (O₃) in the air

Greenhouse gas emission of perfluorocarbons into the air

Concentration of particulate matter 0.1 in the air

Concentration of particulate matter 10 in the air

Concentration of particulate matter 2.5 in the air

Motor used with a pump to move fluid

Water expelled from a system to remove contaminants

Integral of reactive-power over time

Reactive power or imaginary power

Entity inputs refrigerant which flows from another entity

Entity outputs refrigerant to other entities

Refrigerant distribution to fulfill all or parts of a refrigeration cycle

The roof floor is the topmost level of a building

General purpose computer used as a server

Greenhouse gas emission of sulphur hexafluoride (SF₆) into the air

Energy received on surface of the earth from the sun

Boiler which outputs steam

Entity inputs steam which flows from another entity

Entity outputs steam to other entities

Plant used to generate steam for heating

System that circulates water in its vapor state for heating a space or process

Floor below ground level

Concentration of total volatile organic compounds (TVOC) in the air

Actuator to regulate the flow of fluid

VAV pulls air from outside the primary air flow

VAV pulls air from the primary air flow

VFD frequency measured in "Hz"

VFD speed measured in "%"

AC voltage phase angle

AC voltage phase imbalance

Magnitude of electrical voltage

Cooling only VRF system can only cool

Equipment used in VRF systems

Heat pump VRF system can either heat, or cool, but not at the same time

Heat recovery VRF system can operate cooling and heating by each indoor unit independently, at the same time

Indoor unit in a VRF system

Indoor unit fan coil unit in a VRF system

Outdoor unit with one or more compressors in a VRF system

Group of outdoor units in a VRF system

Variable refigerant flow system

Relatively warm water without active heating

System that supplies or collects potable or non-potable water in any state

Weather station observation point

Compass direction from which wind originates

Wind flow speed

Point with writable output using 16-level priority array

Space associated with a specific system