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Topic: Affinity Laws


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In the News (Wed 23 Dec 09)

  
  Pump Affinity laws
As you cut down the impeller diameter, the housing is not coming down in size so the affinity laws do not remain accurate below this 10% maximum number.
The affinity laws remain accurate for speed changes and this is important to remember when we convert from jam packing to a balanced mechanical seal.
We sometimes experience an increase in motor speed rather than a drop in amperage during these conversions and the affinity laws will help you to predict the final outcome of the change.
www.mcnallyinstitute.com /02-html/2-01.html   (667 words)

  
  Encyclopedia article: Affinity   (Site not responding. Last check: 2007-10-31)
In law and in cultural anthropology (The social science that studies the origins and social relationships of human beings), affinity, as distinguished from consanguinity (Related by blood), is kinship by marriage (The state of being a married couple voluntarily joined for life (or until divorce)).
Collateral affinity is the relationship subsisting between the husband and the relations of his wife's relations.
Affinity of one chemical to another is measured quantitatively by an equilibrium constant ((chemistry) the ratio of concentrations when equilibrium is reached in a reversible reaction (when the rate of the forward reaction equals the rate of the reverse reaction)) of the bound and nonbound form.
www.absoluteastronomy.com /encyclopedia/a/af/affinity.htm   (586 words)

  
 biology - Affinity
In law and in cultural anthropology, affinity, as distinguished from consanguinity, is kinship by marriage.
Formerly by law in England, marriages within the degrees of affinity were not absolutely null, but they were liable to be annulled by ecclesiastical process during the lives of both parties; in other words, the incapacity was only a canonical, not a civil, disability.
Affinity of one chemical to another is measured quantitatively by an equilibrium constant of the bound and nonbound form.
www.biologydaily.com /biology/Affinity   (494 words)

  
 Water turbine - Wikipedia, the free encyclopedia
Newton's third law describes the transfer of energy for reaction turbines.
Affinity Laws allow the output of a turbine to be predicted based on model tests.
Affinity laws are derived by requiring similitude between the test model and the application.
en.wikipedia.org /wiki/Water_turbine   (1888 words)

  
 Engineered Systems: Beyond the affinity laws   (Site not responding. Last check: 2007-10-31)
The affinity laws are frequently cited for energy savings calculations in VSD applications with pumps and fans, and they are just as frequently misused in an attempt to simplify those calculations.
Many engineers recognize the fact that the affinity laws are for theoretical ideal situations; in order to correct for this shortcoming in dealing with a real situation, every engineer brings his own adjustment factor to modify the affinity laws.
So far the power expression W as stipulated by the affinity laws is defined as the brake horsepower of the fan/pump for any given flow Q. In most real situations, an exact match between the peak design brake horsepower and the selected motor horsepower rating is very unlikely.
www.findarticles.com /p/articles/mi_m0BPR/is_8_21/ai_n6177804   (1420 words)

  
 CATHOLIC ENCYCLOPEDIA: Affinity (In the Bible)
affinity in linea recta, whereas childlessness is threatened to those who marry within the forbidden degrees in linea collaterali.
It is well to note that childlessness here referred to means either that the offspring shall be looked upon as illegitimate, or that they shall be considered as the legitimate descendants of the deceased uncle or brother.
In either case they would be childless before the law, and their possessions would pass into another family.
www.newadvent.org /cathen/01177c.htm   (496 words)

  
 Fluide Design Inc. - Help for calculating the impeller diameter or speed for a new flow rate   (Site not responding. Last check: 2007-10-31)
The calculations are based on the affinity laws which in turn are derived from a dimensionless analysis of three important parameters that describe pump performance (ref: The Pump Handbook by McGraw-Hill, chapter 2).
If that is the case then the affinity laws can be used to predict the performance of the pump at different diameters for the same speed or different speed for the same diameter.
The process of arriving at the affinity laws assumes that the two operating points that are being compared are at the same efficiency.
www.fluidedesign.com /help7.html   (430 words)

  
 Fluide Design Inc. - Glossary of pump and pump system related terms   (Site not responding. Last check: 2007-10-31)
Affinity laws: the affinity laws are used to predict the change in diameter required to increase the flow or total head of a pump.
The affinity laws can only be applied in circumstances where the system has a high friction head compared to the static head and this is because the affinity laws can only be applied between performance points that are at the same efficiency.
The affinity laws are expressed by the three following relationships where Q is the flow rate, n the pump rpm, H the total head and P the power.
www.fluidedesign.com /pump_glossary.htm   (8652 words)

  
 Affinity : Usage Policy
Affinity reserves the right to suspend or terminate your Services in the event Affinity receives an excessive number of complaints related to your permission-based communications, whether such complaints are made by parties whom "opt-in" or otherwise.
Affinity takes an active role in cooperating with law enforcement officials in their efforts to prosecute violations of statutes that prohibit the dissemination of child pornography.
Affinity assumes no obligation to inform you that such information has been provided and, in some cases, may be prohibited by law from providing you with notice.
www.affinity.com /about/usage_policy.htm   (2511 words)

  
 DHS Club - Affinity Group Terms of Agreement
Affinity Group Members who refer and enroll other membership types will be generating pay points for the Affinity Group, which will allow the Affinity Group to reach higher levels of compensation.
Any activities, whether lawful or unlawful, which are harmful to the DHS Club's operations, reputation, or other clients, especially activities which may restrict or inhibit others from using and enjoying the services which the DHS Club provides, are strictly prohibited.
LAWS – The Affinity Group certifies that they are a legal, registered organization or corporation in the state of the address provided on the application.
www.clubshop.com /srw/affinity_terms.html   (1255 words)

  
 Spartanburg SC | GoUpstate.com | Spartanburg Herald-Journal
Affinity (canon law), a relationship arising from the sexual intercourse of a man and a woman
Affinity laws, in hydraulics, used to express the relationship between variables involved in pump performance
Affinity (Fire Emblem), the numerous bonuses units have from sharing support conversations with one another.
www.goupstate.com /apps/pbcs.dll/section?category=NEWS&template=wiki&text=affinity   (198 words)

  
 Engineered Systems: The affinity laws are inadequate in the 'real' world. Agreed?   (Site not responding. Last check: 2007-10-31)
The affinity laws are most commonly used to derive energy-savings estimates from vsd-controlled devices in comparison with other types of control devices.
However, the affinity laws are the frequent subject of debates.
Even if the affinity laws were true (which they are not), they only apply to the power input to the fan or pump.
www.findarticles.com /p/articles/mi_m0BPR/is_10_16/ai_57006029   (1176 words)

  
 Affinity Laws - Goulds Pumps - ITT Corporation
The affinity laws express the mathematical relationship between the several variables involved in pump performance.
The affinity laws listed under 1 above will be used to determine the new performance, with N1 1750 RPM and N2 = 2000 RPM.
In other words, assume you want to determine the speed required to make a rating of 343 GPM at a head of 209 ft. You would begin by selecting a trial speed and applying the affinity laws to convert the desired rating to the corresponding rating at 1750 RPM.
www.gouldspumps.com /cpf_0010.html   (324 words)

  
 [No title]
Affinity may suspend or terminate our service for any violations to their Acceptable Use Policy(AUP) if it is determined, in their sole discretion, that anyone may be involved in any activity that violates the AUP.
Affinity also reserves the right to suspend or terminate our services upon any complaint from any third party because of activity that pertains to their AUP.
Affinity takes an active role in cooperating with law enforcement officials in their efforts to prosecute violations of statutes that prohibit the dissemination of child pornography.
www.iaff2969.com /content/emailreq.html   (775 words)

  
 magicklaws   (Site not responding. Last check: 2007-10-31)
Like the law of gravity or the law of diminishing returns, these magical laws are not legislative acts (as some theologians have tried to make them) but rather they are descriptions of the ways that phenomena in the field – in this case magic – seems to interact and behave.
Greater affinity (kinship) with any manifestation leads to a more powerful response when aid is requested, much is as a good friend is more likely to help you out than a stranger.
THE LAW OF ASSOCIATION: Greater common characteristics between two manifestations combined with greater knowledge of the commonalties produces greater affinity and influence.
www.ctwp.org /magicklaws.htm   (553 words)

  
 Blade's Battlestation: Career Services   (Site not responding. Last check: 2007-10-31)
In fact, Affinity Confederation law gives all members a huge role by allowing them to petition the senate anytime to change PA laws and regulations.
Affinity PA believes in giving all the power to the members and work with them, NOT against them as is commonly seen.
Affinity Confederation strongly believes in letting the members "just play", which is why we institute laws only when its totally necessary.
www.rpgplanet.com /starwars/groups/group.asp?ID=1181   (484 words)

  
 MaintenanceWorld.com: The Affinity Laws for Rotary, Positive Displacement Pumps 13-6 - The McNally Institute
The affinity laws accurately predict the affect of changing the speed of a centrifugal or rotary pump, and they also do a fairly good job of predicting the affect of changing the diameter of a centrifugal pump.
In another paper (02-01) we discussed the affinity laws as they apply to centrifugal pumps, but in this paper we will look at their use with rotary pumps.
There is a set of Affinity Laws for changes in viscosity, but unlike changes in speed the change in viscosity does not give you a direct change in capacity, NPSH required, or horsepower.
www.maintenanceworld.com /Articles/mcnally/theaffinity.html   (875 words)

  
 Pump Affinity Laws
Turbo machines affinity laws are used to calculate volume capacity, head or power consumption, when speed - rpm, or wheel diameters are changed for centrifugal pumps
Note that the affinity laws for fans are not identical with pumps.
Fan Affinity Laws Turbo machines affinity laws are used to calculate volume capacity, head or power consumption, when speed - rpm, or wheel diameters are changed for centrifugal fans
www.engineeringtoolbox.com /affinity-laws-d_408.html   (698 words)

  
 Fisher Industries Inc.
It qualifies as centrifugal because it responds to the Affinity Laws, which predict the behavior of centrifugal machines.
These laws basically state that the theoretical performance of a centrifugal pump can be predicted by application of a change in either its rotating speed or its impeller diameter.
In practical application, it should be noted that a slight variation with calculated results should be expected due to flow phenomena resulting from things such as casting variations and departure from optimized design conditions.
www.fisherpump.com /fundamentals.html   (1134 words)

  
 About Us   (Site not responding. Last check: 2007-10-31)
Affinity Press Comics is located globally, thanks to the wonders of technology.
This allows many of our members to work on their Affinity projects in their spare time, unlike the traditional comic world where you have to move to the town where the headquarters is located.
All logos are considered trademarks of Affinity and may not be reproduced without prior written consent.
www.megspace.com /entertainment/affinity1/aboutus.htm   (324 words)

  
 Features Item: Beyond The Affinity Laws   (Site not responding. Last check: 2007-10-31)
It is important to note that the above affinity laws as stated are only valid in theory where the flow Q1 has simply been changed to Q2 at the design stage.
The most flagrant misuse of the affinity laws is to apply the cubic function directly on the kW formulation by stating that kW1 / kW2 = (Q1 / Q2)3.
In a closed loop static (i.e., constant volume flow) situation, the affinity laws suggest that using a VFD would correct the brake horsepower on the fans/pumps by (0.83=) 0.51.
www.esmagazine.com /CDA/ArticleInformation/features/BNP__Features__Item/0,2503,129922,00.html   (2566 words)

  
 Policies and Procedures
Any assets that take the form of claims to compensation or satisfaction of contractual obligations, from or by the Company, will not be recognized as assets of the transferee on the records of the Company until the Company has received written notification of the transfer and has given its formal written approval.
Extension of the refund policy as required by applicable law, or instances in which Distributor misconduct, misrepresentation, or other extenuating circumstances necessitates a Company refund in excess of the stated refund policy will be considered on a case-by-case basis.
This Contract is to be construed, with respect to its validity and performance obligations thereunder, in accordance with the laws of the State of Utah applicable to contracts made and to be wholly performed within the state.
www.nuskinusa.com /bp/static/pandp.html   (18268 words)

  
 Pumps for Florida Irrigation and Drainage Systems   (Site not responding. Last check: 2007-10-31)
Also the laws do not say anything about how the efficiency of the pump will change with speed, but generally this is not a significant change.
It is not feasible to increase impeller diameter.
There is a second set of affinity laws (Equation 7), which describes the relationships between the same variables when the impeller size is changed under constant speed conditions.
edis.ifas.ufl.edu /WI001   (4557 words)

  
 D13
Affinity was found in 1999 with approximately $60 million in venture capital
Affinity, John was a critical part of the original management team for Interliant,
Affinity periodically and increase its coverage in a prudent and professional
www.icann.org /tlds/biz2/registry_operators_proposal/business_capabilities_and_plan_current_info_and_operations.html   (1618 words)

  
 Marry in Massachusetts: 01/01/2005 - 01/31/2005   (Site not responding. Last check: 2007-10-31)
While such laws were no longer enforced, they remained on the books in the United States until June 1999, when Alabama finally repealed the last one.
State law (Chapter 262: Section 25) caps the fee at $75 in the solemnizer's town or $125 anywhere else in the commonwealth.
I hadn't thought in those terms, but the (Southern) Baptist Press quotes a Princeton University law professor, Robert P. George, as saying that where same-sex marriage becomes legal, churches may have to perform these ceremonies or risk losing their tax-exempt status.
massmarrier.blogspot.com /2005_01_01_massmarrier_archive.html   (2570 words)

  
 JAC Pump Services Online Pump Training 10   (Site not responding. Last check: 2007-10-31)
These laws apply to operating points at the same efficiency.
Variations in impeller diameter greater than 10% are hard to predict due to the change in relationship between the impeller and the casing.
I know you are thinking "what does this have to do with anything"?, but if you can understand these 'laws' then you can make rough estimates without having to find full information (which might not be available anyway)
users.tpg.com.au /jckkl/jac/pump_school_5.html   (201 words)

  
 Basic guide to fans and blowers   (Site not responding. Last check: 2007-10-31)
The performance characteristics of fans follow relationships known as the affinity laws.
These three laws are used to correlate the flow (Q), pressure developed (P), and power required (H) with the rotational speed (N), fan impeller diameter (D), and density (å) of the gas.
These fan laws hold true only when all fan component dimensions are scaled by the impeller diameter ratio.
www.manufacturing.net /ple/index.asp?layout=articlePrint&articleID=CA130361   (733 words)

  
 Table of Consanguinity (Getty Museum)   (Site not responding. Last check: 2007-10-31)
In the section of the Decretals on matrimony, an illuminator provided two full-page diagrams across a double-page spread to explain visually the laws of consanguinity and affinity.
These laws were important for determining lines of inheritance and the legality of marriages.
The first of these diagrams, the Table of Consanguinity, displays the degrees of relationship between a person and his or her blood relatives in order to make clear the prohibitions on marriage within one's own family.
www.getty.edu /art/collections/objects/o5070.html   (174 words)

  
 The Laws of Magick<P>
When I speak of affinity and influence (that between kindred spirits), many others would use words such as power and control.
Probably a lot of that arises from my perception that the energy used for keeping another bound to one's will is not needed when raising power becomes an act of mutual affinity rather than exclusive control.
Greater balance is required for greater affinity and influence.
www.unc.edu /home/reddeer/magick/magickallaw.html   (501 words)

  
 Direct Shipments Home Page
As a result, the laws governing direct shipment vary widely- ranging from quite open and simple to states that consider wine shipments a felony.
If you need to contact an attorney who specializes in alcoholic beverage law, we have compiled a listing of our associate members who may be able to assist you.
We DO NOT encourage our members to violate state distribution laws, BUT we have a sincere interest in effecting change (by lawful means) that would permit the direct shipment to consumers from wineries of limited quantities of wine.
www.wineinstitute.org /shipwine   (575 words)

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