- Psychometry
wiktionary psychometry Psychometry may refer to Psychometry paranormal , a form of extrasensory perception Psychometrics , a discipline of psychology and education Psychometric Entrance Test , a standardized academic test used in Israel Psychrometrics , the measurement of the heat and water vapor properties of air. disambig ... more details
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- Hard frost
merge Frost discuss Talk THIS PAGE It is basically hoar frost, not a distinct hydrometeor date April 2011 Orphan date July 2009 A hard frost , also called a radiational freeze or frost, occurs when the winds are calm and the sky is clear, allowing an Inversion meteorology inversion to form because of rapid radiational cooling at the Earth s surface. When this happens the ground gets below freezing , often killing plants. See also Commonscat Frost Wiktionary Frost temperature Frost line Frost References http glossary.gardenweb.com glossary hard frost http davesgarden.com guides terms go 1872 Category Weather Category Psychrometrics Category Water ice Category Precipitation Category Forms of water ar nl Strenge vorst ... more details
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- Dry-bulb temperature
The dry bulb temperature is the temperature of air measured by a thermometer freely exposed to the air but shielded from radiation and moisture . Dry bulb temperature is the temperature that is usually thought of as air temperature, and it is the true thermodynamic temperature. It is the temperature measured by a regular thermometer exposed to the airstream. Unlike wet bulb temperature , dry bulb temperature does not indicate the amount of moisture in the air. In construction , it is an important consideration when Design designing a building for a certain climate . Nall called it one of the most important climate variables for human comfort and building energy efficiency. ref Nall, D. H. 2004 11 . Looking across the water Climate adaptive buildings in the United States & Europe. In The Construction Specifier , 57, 50 56. ref See also Psychrometrics Psychrometric chart Wet bulb temperature Hygrometer Atmospheric thermodynamics References references br Meteorological variables climate stub Category Atmospheric thermodynamics ca Temperatura seca es Temperatura Temperatura seca ja nn T rrtemperatur ... more details
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- Heat meter
unreferenced date October 2010 image W rme bergabestation 300 kW.jpg thumb right Heat meter in a District heating substation in a residential neighborhood. Right in whit blue the calculator in the center in bronze the ultrasonic flow meter A heat meter is a device which measures thermal energy provided by a heater source or delivered to a heat sink sink , by measuring the flow rate of the heat transfer fluid and the change in its temperature Psychrometrics T between the outflow and return legs of the system. It is typically used in industrial plants for measuring boiler output and heat taken by process, and for district heating systems to measure the heat delivered to consumers. It can be used to measure the heat output of say a heating boiler, or the cooling output from a chiller unit. Elements A heat meter consists of a fluid flow meter typically a turbine type flow meter, or alternatively an ultrasonic flow meter a means of measuring the temperature between the outflow and the inflow usually a pair of thermocouples a means of integrating the two measurements over a period of time typically half an hour and accumulating the total heat transfer in a given period. See also District heating Heat cost allocator Heating system Thermometer Universal Metering Interface UMI tech stub Category Thermometers de W rmez hler pl Licznik ciep a ru uk ... more details
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- Operative temperature
also HVAC Psychrometrics Underfloor heating ASHRAE References Reflist DEFAULTSORT Operative Temperature ... more details
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- Vapour Pressure Deficit
Systems on line VPD calculator Category Psychrometrics ecology stub de S ttigungsdefizit uk ... more details
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- Richard Mollier
See also Psychrometrics External links commonscat http dispatch.opac.d nb.de DB 4.1 REL?PPN 117122173 ... more details
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- Arden Buck equation
The Arden Buck equations are a group of empirical correlations that relate the saturation vapor pressure to temperature for Vapour pressure of water moist air . The curve fits have been optimized for more accuracy than the Goff Gratch equation in the range &minus 80 to 50 C. ref name Buck 1981 Buck 1981 ref A set of several equations were developed, each of which is applicable in a different situation. Formula The equation suggested by Harvtxt Buck 1996 which is a modification of the equation in Harvtxt Buck 1981 is math p w 6.1121 exp left left 18.678 frac t 234.5 right left frac t 257.14 t right right math where p sub w sub is the saturation vapor pressure in Pascal unit hPa exp is the natural i.e. base e exponential function t is the air temperature in degrees Celsius See also Vapour pressure of water Antoine equation Goff Gratch equation Notes reflist References Citation last Buck first A. L. title New equations for computing vapor pressure and enhancement factor journal J. Appl. Meteorol. volume 20 pages 1527&ndash 1532 year 1981 url http ams.allenpress.com perlserv ?request get pdf&doi 10.1175 2F1520 0450 281981 29020 3C1527 3ANEFCVP 3E2.0.CO 3B2 doi Citation last Buck title Buck Research CR 1A User s Manual, Appendix 1. year 1996 url http www.hygrometers.com wp content uploads CR 1A users manual 2009 12.pdf doi External links http cires.colorado.edu voemel vp.html Web Page listing various vapor pressure equations Category Atmospheric thermodynamics Category Psychrometrics ... more details
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- Mist
Other uses Refimprove date January 2009 Mist is a phenomenon of small droplets suspended in air . It can occur as part of natural weather or volcanic activity, and is common in cold air above warmer water, in Exhalation exhale d air in the cold, and in a steam room of a sauna . It can also be created artificially with Aerosol spray aerosol canisters if the humidity conditions are right. The only difference between mist and fog is visibility. ref http www.rcn27.dial.pipex.com cloudsrus mistnfog.html ref This phenomenon is called fog if the visibility is one kilometre 1,100 yards or less in the UK for driving purposes the definition of fog is visibility less than 200 metres, for pilots the distance is 1 kilometre . Otherwise it is known as mist. Seen from a distance, mist is bluish, and haze is more brownish. Citation needed date November 2008 Religious connotations are associated with mist in some cultures it is used as a metaphor in 2 Peter 2 17. Mist makes a light beam beam of light visible from the side via refraction and Reflection physics reflection on the suspended water droplets. Scotch mist is a light steady drizzle, the name being typical of the Scottish penchant for understatement and of Scottish weather . Mist usually occurs near the shores, and is often associated with fog. Mist can be as high as mountain tops when extreme temperatures are low. Freezing mist Freezing mist is similar to freezing fog, only the density is less and the visibility greater. When mist falls below 0 degrees Celsius in temperature it becomes known as freezing mist. gallery File AAfog3.jpg Sunlight filters through a thin layer of fog on a crisp winter morning in Albuquerque , New Mexico File Zimba Panorama.jpg Misty morning at Moralberg File Misty morning02.jpg Misty morning at Swifts Creek gallery References reflist See also Wiktionary mist Commons Mist Aeroponics Brocken spectre Drizzle Fog Haze Spray disambiguation Category Air pollution Category Fog Category Psychrometrics clim ... more details
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- Moisture vapor transmission rate
Through Plastic Film and Sheeting Using Various Sensors Category Psychrometrics Category Packaging ... more details
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- Infiltration (HVAC)
Conditioning Psychrometrics Mechanical engineering Architectural engineering Green building References ... more details
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- Ferdinand Carré
Infobox person name Ferdinand Carr image Carrebio.jpg birth date birth date 1824 03 11 df y birth place Moislains , Somme, France death date death date and age 1900 01 11 1824 03 11 df y death place Pommeuse , Seine et Marne occupation Engineer, inventor known for Absorption refrigerator Ferdinand Philippe Edouard Carr 1824 1900 was a French engineer, born at Moislains Somme on 11 March 1824. Carr is best known as the inventor of refrigeration equipment used to produce ice . He died on 11 January 1900 at Pommeuse Seine et Marne . ref fr icon http jpeuvion.jimdo.com les hommes c l bres Les Hommes C l bres Moislains site ref Work Image AppareilCarr .jpg thumb left Carr s ice making device In 1850, Ferdinand s brother Edmond Carr 22 January 1833 7 May 1894 developed the first absorption refrigerator , using water and sulphuric acid . ref http www.probrewer.com resources refrigeration history.php Refrigeration A brief history ref Ferdinand continued Edmond s work on the process and in 1858 developed a machine which used water as the Absorption chemistry absorbent and ammonia as refrigerant . ref Eric Granryd & Bj rn Palm, Refrigerating engineering, Stockholm Royal Institute of Technology , 2005, see chap. 4 3 ref His absorption machine was patented in France in 1859 and in the United States in 1860. ref http www.tshaonline.org handbook online articles RR dqr1.html Refrigeration . Handbook of Texas Online. ref In 1862 he exhibited his Refrigerator History ice making machine at the 1862 International Exhibition Universal London Exhibition , producing an output of convert 200 kg per hour. His design was based on the Psychrometrics gas vapour system . In 1876 he equipped the ship Paraguay with an absorption refrigeration system, allowing the ship to carry frozen meat on an intercontinental trip. ref http www.nptel.iitm.ac.in courses Webcourse contents IIT 20Kharagpur Ref 20and 20Air 20Cond R&AC 20Web 20files R&AC 20Lecture 201 Hyper 20Links Ferdinand 20Carre.htm ref Ca ... more details
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- Kam Controls
Petroleum in the United States Category Psychrometrics ... more details
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- Room temperature
See also Ambient food Psychrometrics , the study of moist air External links Translation Ref simple ... more details
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- Thermodynamic diagrams
Diagrams Category Atmospheric thermodynamics Category Psychrometrics fa ... more details
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- Chocolate bloom
for chocolate products. A Psychrometrics Psychrometric charts psychrometric chart is a valuable ... more details
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- Institute of Refrigeration
American Society of Heating, Refrigerating and Air Conditioning Engineers ASHRAE Chiller Psychrometrics ... more details
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- Dew point
30, 2011 author Haby, Jeff ref See also Bubble point Carburetor heat Hydrocarbon dew point Psychrometrics ... Category Psychrometrics af Doupunt ar ca Punt de rosada cv cs Rosn ... more details
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- Hygrometer
and dry bulb temperatures on a Psychrometrics psychrometric chart . Psychrometers are commonly used ... equipment Category Psychrometrics ar az Hiqrometr ca Higr metre cs Vlhkom r da Hygrometer ... more details
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- Wet-bulb temperature
close in value. This is due to a coincidence for a water air system the Psychrometrics psychrometric ... by reading from a Psychrometrics Psychrometric charts psychrometric chart of wet bulb versus ... more details
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- Humidity
properties of gas vapor mixtures is named Psychrometrics . Relative humidity Main Relative ... Dew point Dew point depression Humidity indicator Hygrometer Psychrometrics References Reflist ... Category Physical quantities Category Psychrometrics Category Climate Link FA de ar az R tub t ... more details
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- Dew
Archives Hebrew audio Category Psychrometrics Category Atmospheric thermodynamics Category Precipitation ... more details
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- Humidor
ref See also Cigar Tobacconist References reflist Category Containers Category Psychrometrics ... more details
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- Sigma heat
Category Psychrometrics Category Heating, ventilating, and air conditioning ... more details
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- Relative humidity
indicator Humidity indicator card Hygrometer Psychrometrics Saturation vapor density water activity ... DEFAULTSORT Relative Humidity Category Psychrometrics Category Atmospheric thermodynamics Category ... more details
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