Answer / zaipracas

cooling towers works on evaporation of water, but heat exchanger works on the conduction and convection both.

Answer / abul hasan

In Heat Exchenger only heat trnsfer take place,where in
cooling tower both heat transfer as well as mass transfre
take place

Answer / rosh

THERE IS DIRECT CONTACT BETWEEN TWO FLUIDS IN COOLING TOWERS, BUT IN HEAT EXCHANGERS IT IS NOT NEEDED.

Answer / kirankumarrds

1.In cooling towers there is a direct contact b/w the fluids
is there,where as in HE it is not
2.In cooling towers both ht and mt takes place,ht is taking
place from upcoming vapors to falling fluid,mt is takes
place from falling fluid to vapor.In HE only ht is takes place

Answer / chetan gice

In colling tower both mt&ht takes place but in heat exchanger only ht takes place why because there is indirect contact between both where as cooling tower both are in direct contact

Answer / ss

both r wrking on the same principle only a bit differn is
cooling water tower evoporate the water up to th ewet bulb
temprtuer of atm air,i.e its depend on the atm air
condition,but in case of typical heat exchnger the heat
transfer is not depend on atm air wbt they only depen on the
two fluids amngs the heat transfer tkes place

Answer / diipk

basi difference of latent heat CT water gives latent heat to air but in HE latent heat taken from external source ie hot water/brine etc

Answer / govind murali

Cooling Tower is a kind of heat exchanger. The difference lies in the method of energy transfer. Cooling tower may also be considered as a Mass Transfer device because the cooling of water takes place because due to the evaporation of water caused by air. In a normal heat exchanger, only energy transfer takes place, but in a cooling tower both energy and mass transfer takes place.

Answer / kumar phanishwar

there are two types of heat exchangers based on the type of
interaction between fluid:
1. Direct Contact
2. Indirect Contact

Shell & Tube as well as plate type heat exchangers are
indirect contact heat exchangers as heat transfer is through
the surface separating two fluids.

Cooling tower in a direct contact heat exchanger.
In this type of heat exchanger fluids mix with each other
and transfer heat as well as mass.

Answer / shahbaz

In heat exchanger there is heat transfer from hot fluid to cold fluid and make steam and in colig tower heat is removed by faling hot water frm hight and it gets cold .

Sir, what is the significant of mmWC what is the definition? How can we Establish the DEMO apparatus in Plant/process lab. ? Arun Kumar Lupin Ltd Bhopal. 9926433779

2 Answers   Lupin,

what is the difference between car seal close/open valves and lock close/open valves?

0 Answers   MNC,

Mention some of the specialized grinding and crushing methods.

0 Answers  

what is the hearth and arch pressure in furnace?

0 Answers   IFFCO,

Question 44 - In a non-dilute absorber, graphical method is used to represent the process. In an X - Y coordinate system, X-axis represents mole of carbon dioxide / mole of water and Y axis represents mole of carbon dioxide / mole of nitrogen. The inlet gas stream consists of 8 mol % of carbon dioxide in nitrogen. (a) Find the S / G minimum as a slope that goes through the point (0, 0.0304) and (0.0000488, 0.086957). (b) Find the actual slope of operating line when it is 1.5 times the S / G minimum! (c) Find the value of x for inlet gas stream when y = 1640 x, y is mole fraction of carbon dioxide in nitrogen.

1 Answers  

why screw compressor use for ammonia compression?

0 Answers   Deepak Fertilisers,

I am a student of class 12. With PCMB group. But I Am not good at math. So I wanted to ask whether Chemical engineering can be a good option for me.???

0 Answers  

What is maximum recommended velocity for steam in a plant pipe network?

0 Answers  

how to reduce COD from plant waste water closed circulation system

1 Answers  

Question 67 – In order to predict the wastewater production, the population number has to be understood. The population data is : 72000 (for year 1961 or P-1961), 85000 (for year 1971 or P-1971), 110500 (for year 1981 or P-1981). (a) Find the average population increase, or [ (P-1981 - P-1971) + (P-1971 - P-1961) ] / 2. (b) Find the average percentage population increase, or [ (P-1981 - P-1971) / P-1971 + (P-1971 - P-1961) / P-1961 ] / (2) X 100. (c) Find the incremental increase or P-1981 - 2 (P-1971) + P-1961. (d) Let Po = P-1981. After 2 decades or n = 2, the population is P-2001. By using arithmetical increase method, find P-2001 = Po + n (Answer for a). (e) By using incremental increase method, find P-2001 = (Answer of d) + n (n + 1) (Answer of c) / 2. (f) By using geometrical increase method, find P-2001 = Po [ 1 + (Answer of b) / 100 ] ^ n where ^ is power sign, or 1 ^ 2 = 1 x 1 = 1. (g) If the actual P-2001 = 184000, which method of estimation is more accurate, based on your answer in (d), (e) and (f)?

1 Answers  

HOw to derive reynolds equation?

1 Answers  

Question 41 - According to Raoult's law, the pressure when vapor is completely condensed, P = x(1) P(1) + x(2) P(2) ... + x(n) P(n) when x(1), x(2) ... x(n) are the mole fractions of component 1, 2 ... n and P(1), P(2) ... P(n) are the vapor pressures of component 1, 2 ... n. A vapor at 74 degree Celsius containing 70 mole % water and 30 mole % ethanol is to be completely condensed. At the temperature of 74 degree Celsius vapor pressure is 0.38 atm for water and 0.97 atm for ethanol. What is the minimum pressure the compressor must be operated?

1 Answers