14.10. A liquor containing 15 per centsolids is concentrated to 55 per centsolids in a double-effect evaporator.operating at a pressure in the secondeffect of 18 kN/m². No crystals areformed. The flowrate of feed is 2.5 kg/s at 375 K with a specific heat capacityof 3.75 kJ/kg K. The boiling-point rise ofthe concentrated liquor is 6 deg K and thesteam fed to the first effect is at 240 kN/m². The overall heat transfer coefficientsin the first and second effects are 1.8 and0.63 kW/m²K. respectively. If the heattransfer area is to be the same in eacheffect, what areas should be specified?DA

Answered: Image /qna-images/answer/940b2e23-fbc0-4854-b3bd-2b5c6a5b1000.jpg

Answered: 14.10. A liquor containing 15 per cent…

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter9: Heat Transfer With Phase Change

Section: Chapter Questions

Problem 9.28P

See similar textbooks

Similar questions

An evaporator is concentrating F kg/hr at 311K of a 20 wt % solution of NaOH to 50%. The saturated steam used for heating is at 399.3 K. The pressure in the vapor space of the evaporator is 13.3 kPa abs. The overall coefficient is 1420 W/. K and the area is 86.4 square meters. Calculate the feed rate F of the evaporator.
What is the relationship between pressure and the boiling point of liquids?
I need the answer as soon as possible
Evaporator, single effect is used to upgrade the concentrate 8000 kg/h of tomato juice than 5% solids the total to 30% solids total. Juice enters the Evaporator at 20 °C. The Evaporator is operated with Steam (quality 80%) in 143.27 kPa. The condition of vacuum in the Evaporator allow the juice to a boil on the 75 °C. The hot kind of material dilute is 4.1 kJ/(kg °C) and the product the concentrate is a 3.1 kJ/(kg °C). Count (a) the Rate of the needs of steam = kg/h. b. The economic steam if the temperature is condensate is released at 75 °C. = (kg water evaporated/kg of steam)
a) the local film condensation heat-transfer coefficient at the bottom of the tube b) the average condensation heat-transfer coefficient over the entire length of the tube c) the total condensation rate at the tube surface.
Please show the coimplete solution. (Example: Conversion of Units) In an ammonia condensing machine (Compressor Plus Condenser) the water used for condensing is 55°F and the evaporator is at 15°F. Calculate the ideal COP.
Calculate also the material balance, enthalpy balance, data for enthalpies and latent heats of condensation and area
A steam trap is a device to purge steam condensate from a system without venting uncondensed steam. In one of the crudest trap types, the condensate collects and raises a float attached to a drain plug. Whenthe float reaches a certain level, it “pulls the plug,” opening the drain valve and allowing the liquid to discharge. The float then drops down to its original position and the valve closes, preventing uncondensed steam from escaping.(a) Suppose saturated steam at 25 bar is used to heat 100 kg/min of an oil from 135°C to 185°C. Heat must be transferred to the oil at a rate of 1:00 x 10 4 kJ/min to accomplish this task. The steam condenses on the exterior of a bundle of tubes through which the oil is flowing. Condensate collectsin the bottom of the exchanger and exits through a steam trap set to discharge when 1200 g of liquid is collected. How often does the trap discharge?(b) Especially when periodic maintenance checks are not performed, steam traps often fail to close completely…
Apply the ideal gas equation and calculate the volume (units: m3) for a single tank in at its fully pressurised state inside the plant room.
- Calculate the specific volume, specific enthalpy, and specific internal energy of steam at (18) bar and (0.9) dryness fraction
*14. ao Two pots are identical except that the flat bottom of one is alu- minum, whereas that of the other is copper. Water in these pots is boiling away at 100.0 °C at the same rate. The temperature of the heating element on which the aluminum bottom is sitting is 155.0 °C. Assume that heat enters the water only through the bottoms of the pots and find the temper- ature of the heating element on which the copper bottom rests.
2. Find: a. hof steam at saturation pressure of 0.015 MPa and temperature of 800 K b. v of subcooled liquid at saturation pressure of 1.44 MPa and temperature of 17.5°C Use the sample table as reference for your solution in number 2 Sample, find the enthalpy of superheated steam at 1.45 MPa and 515°C. Option 1. Identify the value of the blue ones for the first 2 interpolations. Option 2. Identify the value of the green ones for the first 2 interpolations. 1.4 hs00°C,1.4MP h515°C1.4MPa. H520°C.1.4MPa. Saturation Pressure (MPa) 1.45 h500°C.1.45MP h515°C,1,45MP h520°C.1.45MPa. 1.5 hs00°C,1.5MP H515°C,1. 5MPa h520°C.1.5MPa 500 Temperature °C 515 520

SEE MORE QUESTIONS

Recommended textbooks for you

Principles of Heat Transfer (Activate Learning wi…

Mechanical Engineering

ISBN:

9781305387102

Author:

Kreith, Frank; Manglik, Raj M.

Publisher:

Cengage Learning

Refrigeration and Air Conditioning Technology (Mi…

Mechanical Engineering

ISBN:

9781305578296

Author:

John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:

Cengage Learning

Principles of Heat Transfer (Activate Learning wi…

Mechanical Engineering

ISBN:

9781305387102

Author:

Kreith, Frank; Manglik, Raj M.

Publisher:

Cengage Learning

Refrigeration and Air Conditioning Technology (Mi…

Mechanical Engineering

ISBN:

9781305578296

Author:

John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:

Cengage Learning

SEE MORE TEXTBOOKS