Den medfølgende dampreguleringsventil er ***logaritmisk*** for at sikre langsom åbning.

sources in Danish:

[PDF] Ventiler og rørkoblinger -
www.vidensystem.dk/download.asp?fileID=36
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Man kan sige, den er et kompromis mellem lineær og logaritmisk funktion. Den anvendes til ..... Dampstrømsregulering med 2 vejs dampventil på dampsiden ...

[PDF] DESIK SlutRapportering - Energirigtig design og regulering af ... -
www.elforsk.dk/doks/334-001/334_001_Slutrapport.pdf
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D SlutRapportering - Related articles
midler til at opnå noget andet. Endvidere vil disse sætpunkter påvirke andre effektforbrugende ..... være en temperaturstigning af blandingen i forbindelse med levering af kuldeydelsen. ...... By-passet vil også medvirke til at undgå opsamling af damp i ..... Logaritmisk ventil karakteristik: R = 30:1 til 50:1 ...

[PDF] Resumé
orbit.dtu.dk/getResource?recordId=248703&objectId=1&versionId...
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kølemediet uskilles i form af damp. Dette kondenserer herefter i ...... Da det kan konkluderes at en gennemsnitsbrugsdag sagtens kan få leveret den varme fra køleanlægget, ..... give en større logaritmisk middeltemperatur på ventilationsveksleren, ...... Idet stemplet kører ned, åbnes en ventil til lavtrykssiden, ...

Dampoprensning af klorerede opløsningsmidler på tidligere ... -
www2.mst.dk/udgiv/publikationer/2004/87-7614.../helepubl.htm -3.5.3 Indtrængen af damp i fundamenter, gulve og afløb .... er behandlet udfra en vurdering af, at de er logaritmisk normalfordelte. ...... Målingerne skulle udføres manuelt ved åbning og lukning af 3 ventiler for ... Resultatet blev at vi anvendte den kalibrerede gasafregningsmåler (og den leverede oliemængde) ...

sources in English:

[PDF] Pressure Independent Control Valve Automatic Flow Limiting Valve
www.hciterminator.com/Literature/specsheets/PICV_brochure.p... Acrobat - Quick View
full stroke, full authority equal percentage temperature control valve. ... relative to P3 the diaphragm acts to open the shutter (A) from the seat (B) ... The diaphragm acts against a spring in order to balance the pressure ... Figure E. describes an ***Equal Percentage (modified logarithmic) valve characteristic***. ...

[PDF] V.S. Guide
www.conservationsolutions.com/assets/files/pdfs/spartan/vsg...
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***Equal Percentage Plugs or Logarithmic Plugs*** ............... 3 ... To Calculate the Cv of a Valve When Using Steam ....... 4 .... circulator DP across the open control valves. Many engi- ... only slows the water down in its flow through the coil. ... to-order basis where delivery problems are of little concern. ...

ELECTRONIC VALVE APPLICATIONS GUIDE_百度文库
wenku.baidu.com › 专业文献/行业资料 › 建筑 -
21 Nov 2010 – The response curve is ***logarithmic (shallow equal percentage)*** along .... As we will see the control valve can be characterized in order to ... Linear characteristics are used in some two-way valves for pressure or steam control. ...... switches may allow slow action in both open and close operation. ...

some English sources tend to differentiate between linear and equal percentage flow control characteristics:

Characterizers For Control Loops
www.expertune.com/artCharact.html -
If the variation in process gain is less than about 50 percent over the full ... valve characteristics will deliver flow linearly with controller output. ... is logarithmic, capable of producing a gain variation over several orders of magnitude. ... recovery of the process variable (PV) from the upset is very slow , ...

[PDF] control valves
fplreflib.findlay.co.uk/articles/23778/Opening%20up.pdf
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supposed corrective actions are typically worse plant efficiency and/or ... world, a control valve would have an installed gain ... Control engineers typically select from equal percentage, linear or ... capacity, while quick-open trims deliver a large ... One solution may involve slowing the loop down, so ...

[PDF] CONTROL VALVE SOURCEBOOK
www.documentation.emersonprocess.com/groups/.../d103540x012...
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5-1. Chapter 6. Control Valve Noise. 6-1. Chapter 7. Steam Conditioning. 7-1 ...... designed to produce linear, equal-percentage, and quick-opening inherent flow characteristics. Note ..... other criteria must be considered in order to obtain ...... Lack of fail-safe action. Limited duty cycle. Slow stroking speed ...