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Study of gas-vapor mixtures
Psychrometrics (or psychrometry, from Greek ψυχρόν (psuchron) 'cold' and μέτρον (metron) 'means of measurement'; also called hygrometry) is the field of
Psychrometrics
Relation of the partial pressure of water in air to temperature
The psychrometric constant γ {\displaystyle \gamma } relates the partial pressure of water in air to the air temperature. This lets one interpolate actual
Psychrometric_constant
Temperature of air as measured by a thermometer shielded from radiation and moisture
temperature is an important variable in psychrometrics, being the horizontal axis of a psychrometric chart. Psychrometric chart Hygrometer Atmospheric thermodynamics
Dry-bulb_temperature
Temperature below which condensation occurs
on 8 July 2003. Bubble point Carburetor heat Hydrocarbon dew point Psychrometrics Thermodynamic diagrams US Department of Commerce, NOAA. "Dew Point vs
Dew_point
American inventor (1876–1950)
Psychrometric Formulae – at the annual meeting of the American Society of Mechanical Engineers. It became known as the "Magna Carta of Psychrometrics
Willis_Carrier
Water in the gas phase
scientific correlation) Industrial Revolution Mass production Oxyhydrogen Psychrometrics – moist air–vapor mixtures, humidity, and air conditioning Steam–electric
Steam
Gaseous phase of water
vapor, water vapour, or aqueous vapor is the gaseous phase of water. It is one state of water within the hydrosphere. Water vapor can be produced from
Water_vapor
German scientific academic (1863-1935)
air versus its water vapor content (h–x diagram) is equivalent to the Psychrometrics Chart commonly used in the US and Britain. After attending Gymnasium
Richard_Mollier
Engineering discipline
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Mechanical_engineering
Subfields of building design and construction
services. Thus, it incorporates the control of environmental factors (psychrometrics), either for human comfort or for the operation of machines. Heating
Mechanical, electrical, and plumbing
Mechanical,_electrical,_and_plumbing
Concentration of water vapour in the air
physical and thermodynamic properties of gas–vapor mixtures is named psychrometrics. Brun, Philipp; Zimmermann, Niklaus E.; Hari, Chantal; Pellissier, Loïc;
Humidity
Range of indoor air temperatures preferred by most people
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Room_temperature
Instrument for measuring humidity
locating the intersection of the wet and dry-bulb temperatures on a psychrometric chart. The dry and wet thermometers coincide when the air is fully saturated
Hygrometer
Temperature for heat exchange
of the psychrometric chart illustrated in ANSI/ASHRAE Standard 55 – Thermal Environmental Conditions for Human occupancy. HVAC Psychrometrics Underfloor
Operative_temperature
Device that cools air through the evaporation of water
Understanding evaporative cooling performance requires an understanding of psychrometrics. Evaporative cooling performance is variable due to changes in external
Evaporative_cooler
Temperature of a thermometer covered by moist cloth
values. The relationships between these values are illustrated in a psychrometric chart. Lower wet-bulb temperatures that correspond with drier air in
Wet-bulb_temperature
Topics referred to by the same term
Psychometric Entrance Test, a standardized academic test used in Israel Psychrometrics, the measurement of the heat and water vapor properties of air Psychophysics
Psychometry
Standards organization
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
ASTM_International
Device which rejects waste heat to the atmosphere through the cooling of a water stream
dry-bulb temperature, if the air is relatively dry (see dew point and psychrometrics). As ambient air is drawn past a flow of water, a small portion of the
Cooling_tower
Registered trade name for halocarbon products
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Freon
Technology of indoor and vehicular environmental comfort
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Heating, ventilation, and air conditioning
Heating,_ventilation,_and_air_conditioning
Leakage of outside air into a building
comfort Sick building syndrome Heating, Ventilation and Air-Conditioning Psychrometrics Mechanical engineering Architectural engineering Green building Fundamentals
Infiltration_(HVAC)
Physics of heat, work, and temperature
Non-equilibrium thermodynamics Philosophy of thermal and statistical physics Psychrometrics Quantum thermodynamics Statistical thermodynamics, i.e. Statistical
Thermodynamics
Thermodynamic cycle
conditioning set-up. The psychrometric process of the air passing through the system with four state points is shown on the psychrometric chart of Figure 2 as
Cromer_cycle
Process for digital management of built assets
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Building_information_modeling
Cooling of air in an enclosed space
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Air_conditioning
Intrusion of water causing destruction and attack
Certified professional water damage restoration specialists utilize psychrometrics to monitor the drying process. Restoration costs vary widely depending
Water_damage
Dry particulates obscuring clarity of the sky
Haze is traditionally an atmospheric phenomenon in which dust, smoke, and other dry particulates suspended in air obscure visibility and the clarity of
Haze
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Warm_Spaces
Aspects of fluid mechanics involving fluid flow
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Fluid_dynamics
Standard for green building design
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
LEED
Thermal engineering discipline concerning transfer of heat in physical systems
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Heat_transfer
Liquid additive
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Antifreeze
Closed vessel in which fluid is heated
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Boiler
Interior fungal growth
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Indoor_mold
Type of heating device
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Convection_heater
Symptoms of illness attributed to a building
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Sick_building_syndrome
Device used to regulate and circulate air as part of an HVAC system
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Air_handler
Equipment used to transfer heat between fluids
exists between those used for heating, and those for cooling. Due to psychrometrics, air that is cooled often has moisture condensing out of it, except
Heat_exchanger
Device for firing solid fuels in buildings
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Fireplace
Refrigerator that uses a heat source
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Absorption_refrigerator
Conduit used in heating, ventilation, and air conditioning
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Duct_(flow)
Machine used to produce air flow
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Fan_(machine)
Engineering discipline related to environmental science
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Environmental_engineering
Home automation software
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Home_Assistant
Phenomenon caused by small droplets of water suspended in air
Mist is a natural phenomenon caused by small droplets of water aerosols suspended in the cold air, usually by condensation. Physically, it is an example
Mist
Substance used to reduce or regulate the temperature of a system
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Coolant
Architectural engineering that uses the Sun's heat without electric or mechanical systems
electricity, fans or pumps), and human thermal comfort based on heat index, psychrometrics and enthalpy control for buildings to be inhabited by humans or animals
Passive_solar_building_design
Release of a gas that was inside of some material
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Outgassing
Gas compressor where the piston is driven by a linear actuator
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Linear_compressor
Droplets of water that form in the morning or evening
Dew is water in the form of droplets that appears on thin, exposed objects in the morning or evening due to condensation. As the exposed surface cools
Dew
Mechanical fan that forces fluid to move radially outward
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Centrifugal_fan
Coating or deposit of ice
Frost is a layer of ice on a solid surface, which forms from water vapor that deposits onto a freezing surface. Frost forms when the air contains more
Frost
Branch of automation
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Building_automation
Chemical with a high vapor pressure at room temperature
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Volatile_organic_compound
Tank used in hot water systems
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Expansion_tank
Refrigeration process
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Vapor-compression refrigeration
Vapor-compression_refrigeration
Efficiency standard of air filters
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
HEPA
Machine to increase pressure of gas by reducing its volume
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Compressor
Difference between moisture in air and moisture capacity
the saturation pressure. Saturation pressure can be looked up in a psychrometric chart or derived from the Arrhenius equation; a way to compute it directly
Vapour-pressure_deficit
Process of moving heat from one location to another in controlled conditions
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Refrigeration
Method of heat exchange in which convection drives pumpless circulation
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Thermosiphon
of atmospheric air movements and by local topography. psychrometer psychrometrics The field of engineering concerned with the physical and thermodynamic
Glossary_of_meteorology
Type of heating system
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Central_heating
Novelty toy heat engine
based on the definition of the Carnot heat engine efficiency and the psychrometric concepts. By the 1760s (or earlier) German artisans had invented a so-called
Drinking_bird
High-performance energy-efficiency building standard
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Passive_house
Ways to cool down intake air of gas turbines
of water, hourly electric demand values, cost of fuel. Energy portal Psychrometrics Load duration curve Thermal energy storage Vapor-compression refrigeration
Turbine_inlet_air_cooling
Self-regulating valve to control hot water flow
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Thermostatic_radiator_valve
Phase transition from gas to solid
Deposition is the phase transition in which gas transforms into solid without passing through the liquid phase. Deposition is a thermodynamic process.
Deposition_(phase_transition)
Type of heat pump
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Absorption–compression heat pump
Absorption–compression_heat_pump
Cooling commodity
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Chilled_water
Category of HVAC technologies
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Radiant_heating_and_cooling
Portable heater
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Salamander_heater
Device which reduces humidity
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Dehumidifier
One of the main factors limiting microbial activity
temperature is then used to find the relative humidity of the chamber using psychrometrics charts. This method is theoretically the most accurate (+/- 0.003 aw)
Water_activity
American HVAC professional association
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
ASHRAE
Movement of air through a building
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Cross_ventilation
Measure of energy in a thermodynamic system
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Enthalpy
Concept in physics
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Stack_effect
Maximum density of water vapor at given temperature
Humidity and hygrometry Specific concepts Dew point Dew point depression Psychrometrics General concepts Air Concentration Density Dew Evaporation Humidity
Saturation_vapor_density
Device designed to create radiative heat
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Infrared_heater
Graphical technique for data sets
given data for the adult male population. Very complex graph: the psychrometric chart, relating temperature, pressure, humidity, and other quantities
Plot_(graphics)
Temperature maintenance device connected to Wi-Fi
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Smart_thermostat
System for condensing gas into liquid by cooling
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Condenser_(heat_transfer)
Heat exchanged by a body or thermodynamic system
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Sensible_heat
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
TurboSwing
Ground-level cloud of ice crystals
Diamond dust is a ground-level cloud composed of tiny ice crystals. This meteorological phenomenon is also referred to simply as ice crystals and is reported
Diamond_dust
Flow-control device
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Control_valve
Where fluid motion is generated by an external source
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Forced_convection
Refrigeration method
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Adsorption_refrigeration
System to transfer heat to/from the ground
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Ground_source_heat_pump
System to cool the air in a vehicle
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Automotive_air_conditioning
Pressure exerted by molecules of water vapor in gaseous form
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Vapour_pressure_of_water
Use of thermal energy storage in building design
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Thermal_mass
Working fluid in a refrigeration cycle
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Refrigerant
Process in which electrical energy is converted to heat
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Electric_heating
List of articles related to underwater diving grouped by topical relevance
Torricellian chamber – Low pressure air space in a flooded cave chamber Psychrometric constant – Relation of the partial pressure of water in air to temperature
Outline_of_underwater_diving
Absorption refrigerator invented in 1930
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Einstein_refrigerator
Device which removes solid particulates from the air
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Air_filter
Thermodynamic phase transition energy
Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification
Latent_heat
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