libs

ph

Project Haystack core definitions

phIoT

Project Haystack definitions for Internet of Things

phScience

Project Haystack scientific definitions

entities

equip

Equipment asset

    ahu

Air handling unit

    battery

Device used to store electric energy

    boiler

Boilers generate hot water or steam for heating

        hot-water-boiler

Boiler which outputs hot water

        steam-boiler

Boiler which outputs steam

    chiller

Device to remove heat via a vapor compression or an absorption refrigeration cycle

    conduit

Duct, pipe, or cable to convey a substance or phenomenon

        duct

Conduit used to convey air for HVAC

            s-duct

Duct in equipment section s

        pipe

Conduit used to convey a fluid

            f-pipe

Pipe which conveys fluid f

                s-f-pipe

Pipe in equipment section s which conveys fluid f

            s-pipe

Pipe in equipment section s

                s-f-pipe

Pipe in equipment section s which conveys fluid f

        wire

Cabling used to convey electricity

    coolingTower

Device used to transfer waste heat into the atmosphere

    heatExchanger

Device used to transfer heat between two fluids

    meter

Equipment to meter a substance or electricity

        elec-meter

Electricity meter

        flow-meter

Meter to measure flow rate and total volume of fluid

            f-flow-meter

Meter to measure flow rate and total volume of fluid f

        thermal-meter

Meter to measure energy transfer via fluid

            f-thermal-meter

Meter to measure energy transfer via fluid f

    plant

Central plant used to generate a substance for a process

        chilled-water-plant

Plant used to generate chilled water for cooling

        hot-water-plant

Plant used to generate hot water for heating

        steam-plant

Plant used to generate steam for heating

    tank

Tank used to store a substance for temporary holding

        f-tank

Tank which stores fluid f

    vav

Variable air volume terminal unit

        coolingOnly-vav

Cooling only VAV without fan or reheat

        fanPowered-vav

VAV contains a fan with reheat

    weatherStation

Weather station

point

Data point such as a sensor or actuator

    cur-point

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

    his-point

Historized point with a history log of timestamp/value pairs

    p-point

Point which measures or controls phenomenon p

        p-q-point

Point which measures or controls phenomenon p and quantity q

    q-point

Point which measures or controls quantity q

        p-q-point

Point which measures or controls phenomenon p and quantity q

    writable-point

Point with writable output using 16-level priority array

site

Site is a geographic location of the built environment

    building

Site which is a building

    weatherStation

Weather station

space

Space is a three-dimensional volume in the built environment

    building

Site which is a building

    floor

Storey of a building

    room

Enclosed room of a building

    zone-space

Space associated with a specific system

        hvac-zone-space

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

        lighting-zone-space

Zone related to lighting system

appendix

terms

All terms listed alphabetically

tags

All tag terms listed alphabetically

conjuncts

All conjunct terms listed alphabetically

generics

All generic terms listed alphabetically

feature

Feature namespace of definitions formatted as feature:name

filetype

File format type definition

lib

Library module of symbolic definitions

marker

Marker labels a dict with typing information

val

Data value type

phenomenon

Aspect of scientific interest with measurable quantities

quantity

Measurable property of a substance or phenomenon

process

Industrial or HVAC process

var

Variable name