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Part of a building hosting air circulation for heating and air conditioning systems
A plenum space is a part of a building that can facilitate air circulation for heating and air conditioning systems, by providing pathways for either heated/conditioned
Plenum_space
Topics referred to by the same term
vacuum" Plenum (meeting), a meeting of a deliberative assembly in which all members are present; contrast with quorum Plenum space, enclosed spaces (in buildings)
Plenum
Electrical cable for use in plenum spaces
Plenum cable /ˈplɛnəm/ is electrical cable that is laid in the plenum spaces of buildings. In the United States, plastics used in the construction of plenum
Plenum_cable
Secondary ceiling hung below a main ceiling
infrastructure, including piping, wiring, and/or ductwork, by creating a plenum space above the dropped ceiling, while allowing access for repairs and inspections
Dropped_ceiling
Household appliance that heats a single room or other small area
A space heater is a appliance used to heat a single small- to medium-sized area. This type of heater can be contrasted with central heating, which distributes
Space_heater
Obsolete postulated medium for the propagation of light
propagate through empty space (a vacuum), something that waves should not be able to do. The assumption of a spatial plenum (space completely filled with
Luminiferous_aether
Heating of air in buildings or vehicles
heating system is a mechanism designed to maintain a desired temperature in a space by adding thermal energy. It is a fundamental component of heating, ventilation
Heating_system
Type of vector space in math
Oxford: Clarendon Press. Dirac, P.A.M. (1974), Spinors in Hilbert Space, New York: Plenum Press. Dunford, N.; Schwartz, J.T. (1958), Linear operators, Parts
Hilbert_space
Tank used in hot water systems
the roof space to accommodate the water's expansion[citation needed]; these had the disadvantage of being exposed to cold air in the roof space. This, without
Expansion_tank
Registered trade name for halocarbon products
Louver Mechanical room Oil heater Packaged terminal air conditioner Plenum space Pressurisation ductwork Process duct work Radiator Radiator reflector
Freon
Technology of indoor and vehicular environmental comfort
ventilation and maintain pressure relationships between spaces. The means of air delivery and removal from spaces is known as room air distribution. In modern buildings
Heating, ventilation, and air conditioning
Heating,_ventilation,_and_air_conditioning
Treatment of air from kitchens
Louver Mechanical room Oil heater Packaged terminal air conditioner Plenum space Pressurisation ductwork Process duct work Radiator Radiator reflector
Kitchen_ventilation
Range of indoor air temperatures preferred by most people
Louver Mechanical room Oil heater Packaged terminal air conditioner Plenum space Pressurisation ductwork Process duct work Radiator Radiator reflector
Room_temperature
Wall-mounted air conditioning system
apartment buildings). PTACs are mostly used to cool individual living spaces, there are units which offer resistance heating and/or heat pumps. (The
Packaged terminal air conditioner
Packaged_terminal_air_conditioner
Conduit used in heating, ventilation, and air conditioning
of direction more easily. Plenums are the central distribution and collection units for an HVAC system. The return plenum carries the air from several
Duct_(flow)
Place where ducts meet
An air-mixing plenum (or mixing box) is used in building services engineering and HVAC construction for mixing air from different ductwork systems. Air
Air-mixing_plenum
Component of air conditioning and refrigeration systems
Louver Mechanical room Oil heater Packaged terminal air conditioner Plenum space Pressurisation ductwork Process duct work Radiator Radiator reflector
Thermal_expansion_valve
Heat transfer due to the movement of fluid
Louver Mechanical room Oil heater Packaged terminal air conditioner Plenum space Pressurisation ductwork Process duct work Radiator Radiator reflector
Convection_(heat_transfer)
Concept in physics
ventilation is often preferred for taller structures or in buildings with limited space. Smoke extraction is a key consideration in new constructions and must be
Stack_effect
Cooling of air in an enclosed space
(US) or air con (UK), is the process of removing heat from an enclosed space to achieve a more comfortable interior temperature and, in some cases, controlling
Air_conditioning
Concept in architectural and engineering practice
envelope (interstitial) itself, as well as into and out of the interior space, (which can affect building insulation performance greatly). Hence, air
Building_envelope
Type of home appliance that clears smoke from a stove
them. However, the ducted application can be impractical, due to lack of space or ability to install a duct system, make-up air requirements, or the additional
Kitchen_hood
Type of heating system
A central heating system provides warmth to a number of spaces within a building from one main source of heat. A central heating system has a furnace that
Central_heating
Soviet cosmonaut (1934–1968)
Khrushchev's speech at the plenum of the Central Committee of the CPSU about the state's anti-religion campaign, saying "Gagarin flew into space, but didn't see
Yuri_Gagarin
Air conditioning system that allows for individual control of spaces
Louver Mechanical room Oil heater Packaged terminal air conditioner Plenum space Pressurisation ductwork Process duct work Radiator Radiator reflector
Variable_refrigerant_flow
usually associated with plenum cable. Plenum cable is cable used in plenum spaces of buildings. The plenum /ˈplɛnəm/ is the space used for air circulation
Telco_cable
Absorption refrigerator invented in 1930
Louver Mechanical room Oil heater Packaged terminal air conditioner Plenum space Pressurisation ductwork Process duct work Radiator Radiator reflector
Einstein_refrigerator
System that transfers heat from one space to another
device that uses mechanical or thermal energy to transfer heat from one space to another. The mechanical heat pump uses electric power to transfer heat
Heat_pump
Delivery of chilled water to building needing cooling
these systems the waste heat from chillers can be recycled and used for space heating or hot water production. In September 2004, Enwave Energy Corporation
District_cooling
Device which reduces humidity
brings the extracted air close to saturation. The air then passes to the plenum chamber of the extract fan (C) where a portion of it may be rejected to
Dehumidifier
Standards organization
Louver Mechanical room Oil heater Packaged terminal air conditioner Plenum space Pressurisation ductwork Process duct work Radiator Radiator reflector
ASTM_International
Refrigerator that uses a heat source
the evaporator is greater than the volume of the liquid, with the excess space occupied by a mixture of gaseous ammonia and hydrogen. The presence of hydrogen
Absorption_refrigerator
Closed vessel in which fluid is heated
boiler barrel with a small volume left above to accommodate the steam (steam space). This is the type of boiler used in nearly all steam locomotives. The heat
Boiler
Building in California, US
on all floors of the building. The above-ceiling plenum space was designated as a controlled space and access was restricted without permission from
Chet Holifield Federal Building
Chet_Holifield_Federal_Building
Pressure exerted by molecules of water vapor in gaseous form
Louver Mechanical room Oil heater Packaged terminal air conditioner Plenum space Pressurisation ductwork Process duct work Radiator Radiator reflector
Vapour_pressure_of_water
Type of air filtering equipment
plenum air system. As FFUs require space above the ceiling grid (13" for the FFU module plus another 1–2 feet of "empty" air-filled space), plenums are
Fan_filter_unit
Space in a building dedicated to the mechanical equipment
A mechanical room, boiler room or plant room is a technical room or space in a building dedicated to the mechanical equipment and its associated electrical
Mechanical_room
Facility used to house computer servers
duct chimneys. Hot exhaust pipes/vents/ducts can direct the air into a plenum space above a dropped ceiling and back to the cooling units or to outside vents
Data_center
Refrigeration process
may be defined as lowering the temperature of an enclosed space by removing heat from that space and transferring it elsewhere. A device that performs this
Vapor-compression refrigeration
Vapor-compression_refrigeration
Device which rejects waste heat to the atmosphere through the cooling of a water stream
air continues through the fill and thus past the water flow into an open plenum volume. Lastly, a fan forces the air out into the atmosphere. A distribution
Cooling_tower
Minimization of heat transfer
more comfortable because there is uniform temperatures throughout the space. There is less temperature gradient both vertically (between ankle height
Thermal_insulation
Home automation software
Dylan (May 2018). "Controlling smart lights with Home Assistant" (PDF). HackSpace. No. 4. p. 92. ISSN 0016-9900. Retrieved 18 June 2020. "Transferring my
Home_Assistant
Aspects of fluid mechanics involving fluid flow
pipelines, predicting weather patterns, understanding nebulae in interstellar space, understanding large scale geophysical flows involving oceans/atmosphere
Fluid_dynamics
Substance used to reduce or regulate the temperature of a system
boiling points, mineral oils are used in portable electric radiator-style space heaters in residential applications, and in closed-loop systems for industrial
Coolant
Physics of heat, work, and temperature
Louver Mechanical room Oil heater Packaged terminal air conditioner Plenum space Pressurisation ductwork Process duct work Radiator Radiator reflector
Thermodynamics
Measurement scale for the effectiveness of air filters
Louver Mechanical room Oil heater Packaged terminal air conditioner Plenum space Pressurisation ductwork Process duct work Radiator Radiator reflector
Minimum efficiency reporting value
Minimum_efficiency_reporting_value
Engineering discipline
the aluminum main Space Shuttle external tank, Orion Crew Vehicle, Boeing Delta II and Delta IV Expendable Launch Vehicles and the SpaceX Falcon 1 rocket
Mechanical_engineering
Symptoms of illness attributed to a building
Proper and frequent maintenance of HVAC systems UV-C light in the HVAC plenum Installation of HVAC air cleaning systems or devices to remove VOCs and
Sick_building_syndrome
Species of spider with venomous bite native to US
frequently build their webs in woodpiles and sheds, closets, garages, plenum spaces, cellars, and other places that are dry and generally undisturbed. When
Brown_recluse_spider
Interior fungal growth
as mildew, is a fungal growth that develops on wet materials in interior spaces. Mold is a natural, ubiquitous part of the environment and plays an important
Indoor_mold
System to transfer heat to/from the ground
the time and space scales involved. Four space scales and eight time scales are involved in the heat transfer of GHEs. The first space scale having practical
Ground_source_heat_pump
Machine used to produce air flow
circulate air throughout a living space Window fan – VentilationPages displaying short descriptions with no spaces "Fan". Encyclopædia Britannica. Retrieved
Fan_(machine)
Window protection with horizontal angled slats
2017. Retrieved 29 March 2017. "Frequently asked questions / Rosetta / Space Science / Our Activities / ESA". Retrieved 24 May 2014.{{cite web}}: CS1
Louver
Device which removes solid particulates from the air
aircraft, construction) cabins. human-made environments (e.g., satellites, and Space Shuttles) Air filters are typically constructed of foam, pleated paper,
Air_filter
Liquid additive
food or food processing applications, and can also be used in enclosed spaces. Similar mixtures are commonly used in HVAC and industrial heating or cooling
Antifreeze
Chamber containing a fluid under pressure
A plenum chamber is a pressurised housing containing a fluid (typically air) at positive pressure. One of its functions is to equalise pressure for more
Plenum_chamber
Machine to increase pressure of gas by reducing its volume
rotating positive-displacement helical screws to force the gas into a smaller space. These are usually used for continuous operation in commercial and industrial
Compressor
Method of heat exchange in which convection drives pumpless circulation
heat pipes to transfer heat when there is no gravity, which is useful in space. A thermosiphon is "simpler" than a heat pipe. (Single-phase) thermosiphons
Thermosiphon
Temperature control system
warm up the space from near outdoor conditions in summer or winter. Thus, it is a common practice to set setback temperatures when the space is not occupied
Thermostat
Temperature maintenance device connected to Wi-Fi
consumption. Air conditioning accounts for 17% of electrical usage while space heating accounts for 15%. The Residential Energy Consumption Survey from
Smart_thermostat
High-performance energy-efficiency building standard
standard are ultra-low energy and typically require very little energy for space heating or cooling. The approach is used for housing and for non-residential
Passive_house
Technique for ventilation of a building
ventilation and space conditioning in buildings as part of the design of a HVAC system. UFAD systems use an underfloor supply plenum located between the
Underfloor_air_distribution
Device used for heating buildings
plastic "flex" duct, and is insulated or uninsulated. Unless the ducts and plenum have been sealed using mastic or foil duct tape, the ductwork is likely
Furnace_(central_heating)
Communication protocol used for building automation
Louver Mechanical room Oil heater Packaged terminal air conditioner Plenum space Pressurisation ductwork Process duct work Radiator Radiator reflector
BACnet
Device that cools air through the evaporation of water
environment, and not recovered. In an interior space cooling unit, the evaporated water is introduced into the space along with the now-cooled air; in an evaporative
Evaporative_cooler
Working fluid in a refrigeration cycle
Louver Mechanical room Oil heater Packaged terminal air conditioner Plenum space Pressurisation ductwork Process duct work Radiator Radiator reflector
Refrigerant
Satisfaction with the thermal environment
satisfaction, it is hard to find an optimal temperature for everyone in a given space. Laboratory and field data have been collected to define conditions that
Thermal_comfort
Seal around openings in a fire-resistance-rated wall or floor
Louver Mechanical room Oil heater Packaged terminal air conditioner Plenum space Pressurisation ductwork Process duct work Radiator Radiator reflector
Firestop
Removal of grease from kitchen exhaust systems
food being cooked and volume of grease laden vapors drawn up through hood plenum. Caustic chemicals can be applied to break down the grease. After that,
Kitchen_exhaust_cleaning
Chemistry concept
time required to reduce a known vapor concentration existing in a closed space to a lower vapor concentration. The equation can only be applied when the
Dilution_(equation)
Process for digital management of built assets
vague and undefined, generic or product-specific, solid shapes or void-space oriented (like the shape of a room), that carry their geometry, relations
Building_information_modeling
Release of a gas that was inside of some material
(a process called "bake-out") can drive off volatiles. NASA's Stardust space probe suffered reduced image quality due to an unknown contaminant that
Outgassing
Thermodynamic phase transition energy
particle, so as to cause them to attract one another through a greater space., Lecture on Matter, Living Force, and Heat. May 5 and 12, 1847 Chickos
Latent_heat
Subfields of building design and construction
the installation of services which provide a functional and comfortable space for the building occupants. In residential and commercial buildings, these
Mechanical, electrical, and plumbing
Mechanical,_electrical,_and_plumbing
Device that removes contaminants from the air in a room
suggests that operating air purifiers or air ventilation systems in confined spaces, such as an elevator, during their occupancy by multiple people leads to
Air_purifier
Use of thermal energy storage in building design
in a given time interval. Thermal mass may act as a liability to keep a space comfortable e.g. when it is only used intermittently. Thermal mass has really
Thermal_mass
HVAC device
partition layout within a space. It is quite common for the return air not to be ducted and to use the ceiling void as a return air plenum. The coil receives
Fan_coil_unit
System for condensing gas into liquid by cooling
Louver Mechanical room Oil heater Packaged terminal air conditioner Plenum space Pressurisation ductwork Process duct work Radiator Radiator reflector
Condenser_(heat_transfer)
Self-regulating valve to control hot water flow
Louver Mechanical room Oil heater Packaged terminal air conditioner Plenum space Pressurisation ductwork Process duct work Radiator Radiator reflector
Thermostatic_radiator_valve
Device used to prevent air from moving from one open space to another
opening, generated by top-down flow, and air recovery by a recirculating air plenum and duct return to the source fans. This configuration is feasible for new
Air_door
Thermal engineering discipline concerning transfer of heat in physical systems
reduction in the amount of thermal radiation reaching space relative to what would reach space in the absence of absorbing materials. This reduction in
Heat_transfer
Thin-sheet fountain for evaporatively cooling buildings or water
Louver Mechanical room Oil heater Packaged terminal air conditioner Plenum space Pressurisation ductwork Process duct work Radiator Radiator reflector
Salsabil_(fountain)
Architectural element for creating a draft
cities, with mixed results; traditional methods include narrow, walled spaces, parks and winding streets, which act as cold-air reservoirs, and takhtabush-like
Windcatcher
Efficiency standard of air filters
calculated as the volume flow rate (m3/s) divided by the face area (m2). The air space between HEPA filter fibers is typically much greater than 0.3 μm. Unlike
HEPA
Damp proofing material in sheet form
Louver Mechanical room Oil heater Packaged terminal air conditioner Plenum space Pressurisation ductwork Process duct work Radiator Radiator reflector
Vapor_barrier
Unshielded twisted pair communications cable
mantle of materials like PVC. Plenum-rated cables may be installed in plenum spaces where PVC is not allowed.[self-published source?] Shielded cables (FTP
Category_5_cable
Heating or air-conditioning system
air duct that delivers treated air from an air-handling unit (AHU) to the space the box is serving. This configuration can deliver air at variable temperatures
Variable_air_volume
Equipment used to transfer heat between fluids
industry standards: TEMA. Typically, the ends of each tube are connected to plenums (sometimes called water boxes) through holes in tube-sheets. Shell and
Heat_exchanger
Refrigeration method
or ground source packaged units that provide domestic, low-temperature space heating. It is very similar to absorption refrigeration (note that the second
Adsorption_refrigeration
Pump used in heating or cooling
Louver Mechanical room Oil heater Packaged terminal air conditioner Plenum space Pressurisation ductwork Process duct work Radiator Radiator reflector
Condensate_pump
Measure of energy in a thermodynamic system
Energy must be supplied to remove particles from the surroundings to make space for the creation of the system, assuming that the pressure p remains constant;
Enthalpy
Special purpose heat exchanger
Louver Mechanical room Oil heater Packaged terminal air conditioner Plenum space Pressurisation ductwork Process duct work Radiator Radiator reflector
Recuperator
rooftop unit (RTU) plenum space An enclosed space inside a building or other structure, used for airflow. Often refers to the space between a dropped ceiling
Glossary_of_HVAC_terms
Fan used to cool an attic space
as "whirly-birds", are also used to ventilate attics and other confined spaces. Attic fans may be wired in several different ways. Usually, the fan is
Attic_fan
Ventilation grill with moving parts
Louver Mechanical room Oil heater Packaged terminal air conditioner Plenum space Pressurisation ductwork Process duct work Radiator Radiator reflector
Register_(air_and_heating)
Electrical device to ionise air molecules
June 2008). "Composition and Measurement of Charged Atmospheric Clusters". Space Science Reviews. 137 (1): 213–224. Bibcode:2008SSRv..137..213A. doi:10
Air_ioniser
Air quality within and around buildings and structures
bacteria, and other contaminants, which are then circulated throughout indoor spaces, contributing to respiratory problems and allergies. There have been many
Indoor_air_quality
Thermometer which infers temperature by measuring infrared energy emission
quality monitoring of manufacturing processes, and equipment or enclosed space hot or cold spot monitoring for safety and efficiency maintenance purposes
Infrared_thermometer
Organic chemicals having a high vapor pressure at room temperature
VOCs are retail spaces. Studies have shown that retail spaces have the highest VOC concentrations compared to all other indoor spaces such as residences
Volatile_organic_compound
Concentration of water vapour in the air
misleading—the amount of water vapor that enters (or can enter) a given space at a given temperature is almost independent of the amount of air (nitrogen
Humidity
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