Transcribed image text: Calculate the feed line (q-line) slope for the following cases. a) A two-phase feed where 80% of the feed is vaporized under column conditions VE F LE 7 v b) A superheated vapor feed where 1 mole of liquid vaporizes on the feed stage for each 9 moles of feed input b -F BC Tv c) A liquid feed subcooled by 35°F.

Feed line (q-line) • For the equation of the feed line,. Upper operating line Operating line for the rectifying section: yn+1 = Ln Vn. Rest of 

The q-values. If the condition of the feed is known to be either saturated liquid or saturated vapour, then the value of q is either 1 or 0.

At x=0.5 another small line is drawn that represents the feed or `q' line. subcooled liquid the slope of the feed line is even positive, the same for a 

Feed condition Value of q Subcooled liquid >1 • q: ratio of the increase in molar reflux rate across the feed > 1 Bubble-point liquid 1 Partially vaporized L F /F reflux rate across the feed stage to the molar feed rate L L V V Dew-point vapor 0 Superheated vapor < 0 F q F V V q 1

The y-intercept of the q-line for a subcooled liquid feed is negative O zero positive ; Question: The y-intercept of the q-line for a subcooled liquid feed is negative O zero positive . This problem

Figure 2: Examples of q-line slopes The q-line (depicted in blue in Figure 1) starts at the x = y line and intersects the starting point of the rectifying section operating line. The parameter q is the mole fraction of liquid in the feed, and the slope of the q-line is q / (q - 1).

How many degrees is the liquid subcooled in the condenser? Therefore, the liquid must be subcooled to at least 97 degrees to prevent liquid line flash gas. This means the system would need at least 8 degrees (105 degrees - 97 degrees) of condenser subcooling to prevent liquid line flashing before getting the metering device.

Step 6: Draw the line with slope 0.5 which is the rectifying section OL. Step 7. Draw the stripping section operating line from the Bottoms composition to the intersection of the rectifying section OL and the q-line. y drawing a x Solution: Step 1: From x D locate x 1 and y 1 horizontal line to the equilibrium condition for stage 1. Step 2

If feed is a subcooled liquid, q>1 (i.e., L' augmented by vapor condensation), "slope" of feed equation is positive. If feed is a superheated vapor, q<0 (i.e., L' decreased evaporation), "slope" of feed equation is positive.

Feed condition Value of q Subcooled liquid >1 • q: ratio of the increase in molar reflux rate across the feed > 1 Bubble-point liquid 1 Partially vaporized L F /F reflux rate across the feed stage to the molar feed rate L L V V Dew-point vapor 0 Superheated vapor < 0 F q F V V q 1

Feed quality q: q < 0 is superheated vapor; q = 0 is dew point vapor; 0 < q < 1 is a liquid vapor mixture; q = 1 is bubble point liquid; q > 1 is a subcooled 

Liquid can lose heat and subcool in the receiver, filter drier, and liquid line before it gets to the metering device. However, if there is any refrigerant vapor in the receiver, the subcooled liquid will not subcool further. The vapor will recondense to a liquid in the receiver. Both the liquid and the vapor will reach a new saturation

Jul 20,  · Here, we walkthrough solving a subcooled liquid problem. Given a liquid at a certain temperature and pressure, this is how you determine how far it is below

Mar 30,  · Organized by textbook: https://learncheme.com/Shows how to use mass balances to draw a q-line on a y-x phase diagram for a n-hexane/n-octane mixture. The q-l

Subcooled liquid refers to that phase of a substance where it exists in liquid form at a temperature below its boiling point at the system pressure. The saturated liquid is a liquid that is about to vaporize, which means any decrease in pressure without changing its temperature causes it to boil.

A quality of 0 corresponds to a vapor feed ( ) at its dew point and a quality of 1 corresponds to a liquid feed ( ) at its bubble point; the 

subcooled liquid feed on the distillation column performance. All q-lines are parallel and meet the y = x line at the corresponding value of xF, 

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6) Subcooled Reflux. 7) Multiple Feeds Rectifying Section: Operating line. Slope=L/V=R/(R+1)<1 q-line reflux and all the exiting liquid as boilup.

The q-line (depicted in blue in Figure 1) starts at the x = y line and intersects the starting point of the rectifying section operating line. The parameter q is the mole fraction of liquid in the feed,

subcooled liquid. Position B: q = 1.0 saturated liquid saturated liquid. Position C: 0 < q <: 1 Saturated Vapor: Slope of the q line is zero.

is sub-cooled liquid. The feed-line or q-line equation, which is the locus of the intersection of the enriching and stripping operating-line equations, can be derived as follow: yn+1 V = xnL + xDD (4.4-16) ym+1 V = x m L− xBB (4.4-17) At the intersection of the two operating lines y = y

SG5065 CIRCUIT BREAKER GV2ME10 q-line for subcooled liquid GV2ME10 | Schneider Electric 4 → 6.3 A TeSys Motor. Schneider Electric Motor Protection Circuit Breaker - GV2ME10. Significantly reduces downtime of machinery which allows operations to operate smoothly and safe. Forms part of the TeSys range of products, known as the TeSys GV2 (Green

vapor) or greater than unity (subcooled liquid). The slope of the q-line is q/(q – 1). The construction of the two operating lines and the.

Apr 15,  · The term Subcool refers to any temperature that is below the saturation condensing point of the refrigerant. Let’s say I have a saturation temperature of eighty degrees and the line temperature is at seventy-seven degrees. We now know that we have a three degree Subcool. The efficiency of your system depends on how much liquid refrigerant is