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What is the definition or description of fouling factor in chiller?

Impurities in the chilled water system eventually deposit on evaporator tube surfaces, impeding heat transfer. Cataloged performance data includes a "fouling factor" that accounts forthis effect to more closely predict actual chiller performance. Research conducted by theAmerican Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE)reveals that the negative effect of fouling on the long-term performance of closed-loop chilled water systems is usually less than 0.00025 h·ft²·F/Btu. ARI Standard 550/ 590-1998 reduces the fouling-factor allowance from that value to the 0.00010h·ft²·F/Btu suggested by the study results.Its Effect... Assessing a smaller fouling factor lets specifying engineers, owners, and manufacturers alike take credit for seemingly better heat transfer. With cataloged performance that more closely matches actual operation, specifying engineers can select chillers with greater precision-and owners purchase no more cooling capacity than they actually need. [The revised evaporator fouling factor has little effect on full-load efficiency, i.e. roughly 2 percent. As noted later,full-load efficiency remains an important criterion in many applications.-Editor]


How much water pressure does a 1500 psi pressure washer need?

The inlet pressure can be as low as 45 PSI as long as there is a flow of about 3 gpm. The pump will easily pump it to 1500 psi through the appropriate nozzle


What did Louis T Wright invented?

a metal blade plate to support the fractures of the leg's long bones and the neckbrace.


Can you silver plate right over bronze?

I would hire someone to do it. But you should be able to as long as you clean the bronze allowing the silver to coat the bronze.


What is the cylinder size for 500mm bag size in flexografic printing machine?

If your bag length is 500mm long, the circumference of your drum including your printing plate shall be 500mm. Hence find the diameter of the drum and the plate, then deduct twice the plate thickness (say if the plat is 4 mm, it comes on both sides, so deduct 8mm from the diameter) and derive the circumference of the drum from this number.

Related Questions

If you replaced the spray nozzle on a spray bottle with 3 spray nozzles would each nozzle spray a third of the amount of water as a single nozzle would?

As long as the hole through the nozzle was the same size for all three, then, yes.


Is plate a long vowel word?

No, "plate" is not a long vowel word. The "a" in "plate" is a short vowel sound.


What is Fixed interval schedule of reinforcement?

A fixed interval schedule of reinforcement is a reinforcement schedule in which the reinforcer is delivered for the first response that occurs after a fixed amount of time following the last reinforcer or the beginning of the trial.


How long does the turbo nozzle last in super Mario sunshine?

It can technically last forever as long as Mario continously refills Fludd with water.


Does plate have a long vowel sound?

No, the word "plate" does not have a long vowel sound. The "a" in plate is pronounced with a short vowel sound, like in "cat" or "hat."


How do you replace a windshield washer nozzle on a 2003 Saturn Vue?

It is very easy ... Open the hood ... there is a long cover over the washer fluid tubing that connects to the nozzle .. so you have to take this cover off ... separate nozzel from tube . Insert new nozzle from outside of car . connect to tubing .. replace panel/cover and you are done !!!


How long does it take a styrofoam plate to decompos?

TOO long, that is why you should use paper or re-use a glass plate


Does plate have a short a sound?

it is long A


Does place have a long a or short a?

It has a long A sound, as in plate and face.


Does plate have a long 'a' sound?

Yes, the a in it has a long vowel sound.


What vowel sound in plate?

The vowel sound in "plate" is the long vowel sound /eɪ/.


How long is the plate river?

1300 miles