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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]
What else can I help you with?
What is the difference between a safety factor and a factor of safety?
Both are meaning the same definition. simply you put factor beyond the safety.
Why do electric utilities object to a leading power factor?
Actually, electric utilities object to a lagging power factor, but it does not really matter if its leading (capacitive) or lagging (inductive). The problem is that true vs apparent is less than unity - that's the definition of power factor - and this causes the indicated power (KW) to be less than the actual power (KVA) by a trigonometric relationship between KW and KVAR (kilo volt-amperes reactive). That energy is still required to be provided, and this requires facilities in excess of what is indicated by the power meter.
Which are advantages and disadvantges of plate column?
Plate columns offer several advantages, including high efficiency in mass transfer, the ability to handle a wide range of flow rates, and ease of maintenance due to their modular design. However, they also have disadvantages, such as higher manufacturing and installation costs compared to packed columns, and they can be more susceptible to fouling and operational issues, particularly at high liquid loads. Additionally, plate columns may require more space, which can be a limiting factor in some applications.
What is displacement factor?
Displacement factor is equal to the power factor for linear loads with sinusoidal voltages and currents.pf = cos (angle1 - angle2)
What factor is not part of your environment?
Abiotic factor
What is SI Unit of fouling factor?
The SI unit for fouling factor is m^2·K/W (square meters per kelvin per watt), which represents the thermal resistance caused by fouling on a surface. It is used to quantify the impact of fouling on heat transfer processes in engineering.
What is fouling factor this factor used in heat exchangers?
Fouling factor is essentially used in determining the efficiency of the heat exchangers. Fouling factor is obtained from service (product) on either side of tubes and material of tubes. It basically represents corrosion of heat exchangers tubes which affects efficiency of heat transfer.
Do new episodes of Fear Factor still air?
yes chiller channel Saturday nights at 8:00 pm
What channel does fear factor come on?
Fear Factor is an NBC show. .However, it is found on multiple cable and satellite channels. FX is one channel it airs on now.
What is the definition to factor pairs?
its a factor with two pairs of the same number
Explosive powder factor definition?
* *
Definition for length of factor string?
no
What is the definition of enabling factors?
enabeling factor
Is table of contents the definition of factor in math?
No.
What is the definition of controled experiment?
the definition for a controlled experiment is it test the effects of one factor
What is a sentence with hegemony in it?
A sentence with hegemony in it, is a description of a dominant factor
Can a factor divide a number exactly?
Yes, by definition a factor divides a number exactly
