Answer / chem

Pinch-technology is a method for analyzing and designing
the use of heat energy. It can be best applied to process
industry which uses large amounts of heat energy. Pinch-
technology is based on mass and heat balance of the
concerned process. All the process streams are analyzed.
The so-called hot composite curve consists of all the
streams, which require cooling and the cold composite curve
consists of all the streams, which require heating. With
help of these curves, all the heat transfer of the process
can be analyzed simultaneously. Optimal targets for energy
consumption can be obtained before the design of the heat-
exchanger network. These targets are based on economical
optimization. Pinch-technology can be used also when
designing heat and power cogeneration and for optimal
placing of heat pumps. Computer programs and graphs are
used when designing processes with the pinch-technology.
The composite curves and energy consumption targets can be
easily composed when using software based on pinch-
technology. The topology of the heat-exchanger network in
the early phases of design is convenient to present with
graphical grid presentation

Answer / prabhakaran

to represent a new set of thermodynamically based methods
that guarantee minimum energy levels in design of heat
exchanger networks

Answer / sheela

Pinch Technology is used for energy integration.Most of the
UK consultancy companies offer consultancy on this.
Basically it can be used everywhere and anywhere
when there is a process that uses energy. It is simple but
very efficient. Plenty of companies uses pinch without
knowing that they use pinch at preliminary level But a
detailed pinch design will really save lots of money
interms of energy.
Many people gets confused about PINCH. It doesnt need any
complex calculations. But you have to follow the procedure
and some simple logics thats it. Q=UAdeltaT,. CPdeltaT.
There is no major formulas and difficult equations involved
in it. Pinch Analysis and process integration is the best
book.

Answer / amir

optimum utilization of heat transfer between hot and cold
streams

Answer / prachi

energy intergration via systematic heat exchanger
networking...

Answer / afrin

it is a methodology for minimizing energy consumption of a chemical process in a thermodynamically feasible manner i.e by optimising heat recovery system...............

motor vs pump

1 Answers   Inogent Laboratories,

A cylindrical vessel of 10m height has water upto 6m and is under a pressure of 15bar.What will be the pressure at the bottom most point of the vessel?

4 Answers  

Explain how can I evaluate the thermal relief requirements for double block-in of 98% sulfuric acid?

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QUANTUM COMPUTING - EXAMPLE 32.5 : In quantum teleportation, let (C0 + D1) (00 + 11) = C000 + C011 + D100 + D111. Ba = 00 + 11, Bc = 10 + 01, Be = 00 - 11, Bm = 10 - 01. (a) Find the values of 00, 01, 10 and 11 in term of Ba, Bc, Be and Bm. (b) Prove by calculation that (C0 + D1) (00 + 11) = 0.5 [ Ba (C0 + D1) + Bc (C1 + D0) + Be (C0 - D1) + Bm (-C1 + D0) ].

1 Answers  

what is the height between the reflux pump and condenser ?

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How can you estimate the efficiency of a pump?

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How can you estimate a gas flow based on two pressure measurements?

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How can you quickly estimate the horsepower of a pump?

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UNIT OPERATION - EXAMPLE 9.2 : A distillation column separates 10000 kg / hr of a mixture containing equal mass of benzene and toluene. The product D recovered from the condenser at the top of the column contains 95 % benzene, and the bottom W from the column contains 96 % toluene. The vapor V entering the condenser from the top of the column is 8000 kg / hr. A portion of the product from the condenser is returned to the column as reflux R, and the rest is withdrawn as the final product D. Assume that V, R, and D are identical in composition since V is condensed completely. Find the ratio of the amount refluxed R to the product withdrawn D. Hint : Solve the simultaneous equations as follow in order to find the answer (R / D) : 10000 = D + W; 10000 (0.5) = D (0.95) + W (0.04); 8000 = R + D.

1 Answers  

how FOULING effectd the heat transfer rate

12 Answers   IOCL,

What is a common source of error in determining the percent spent caustic in refinery applications?

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What regulates, or gives a substance the viscosity it has?

3 Answers