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 .

Which chemical is used as antiscalent in RO water treatement plant?

3 Answers   Dalkia, Power Plant,

what is isochronus and droop speed?

0 Answers  

POLYMER ENGINEERING - QUESTION 24.3 : The molecular weights M in kg / mol of 3 different monomers a, b and c in a polymer are Ma = 14, Mb = 16 and Mc = 18, with their respective quantities in N units having the ratio of Na : Nb : Nc = 2 : 3 : 5. (a) Find the numerical average molecular weight of the polymer by using the formula (Ma Na + Mb Nb + Mc Nc) / (Na + Nb + Nc). (b) Find the weighted average molecular weight of the polymer by using the formula (Ma Na Ma + Mb Nb Mb + Mc Nc Mc) / (Ma Na + Mb Nb + Mc Nc). (c) Calculate the polydispersity Q by using the answer in (b) divided by answer in (a). (d) Find the volumetric average molecular weight of the polymer by using the formula (Ma Na Ma Ma + Mb Nb Mb Mb + Mc Nc Mc Mc) / (Ma Na Ma + Mb Nb Mb + Mc Nc Mc). (e) Estimate the polydispersity Q by using the answer in (d) divided by answer in (b).

1 Answers  

What's -74C, dew point is better the -70C dew point In draying unit .

0 Answers  

what is the difference between the heat exchanger and cooling tower???????????

10 Answers   BARC, Essar,

R sir, i need placement paper of last years of IOCL in chemical sream...... send me the question paper as soon as possible on my email address.

18 Answers   ABC, IOCL, ONGC,

Question 42 - According to Margules Equation, P = x(1) p(1) g(1) + x(2) p(2) g(2) for a two-component mixture where P is bubble pressure, x is mole fraction, p is saturation pressure, g is constant given by ln g(1) = x(2) A x(2). Find the value of A as a constant when P = 1.08 bar, p(1) = 0.82 bar, p(2) = 1.93 bar in a 50 : 50 mole fraction mixture. Estimate the pressure required to completely liquefy the 30 : 70 mixture using the same equation, by proving P = 1.39 bar. Take note that ln g(2) = x(1) A x(1), ln g(1) = x(2) A x(2).

1 Answers  

What effect does choking a vertical thermosiphon have on the heat transfer rate?

0 Answers  

Explain the use of gear pumps in motor?

0 Answers  

is petroleum a mixture of hydrocarbon?

5 Answers  

How to calculate the quantity of steam lost due to pinhole leak in a steam line of known pressure and line size?

1 Answers   CPCL,

Explain various protein purification techniques?

2 Answers