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...............

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According to Shockley equation, the I – V characteristic of a diode is approximated by I = IS [ exp (nVD / VT) – 1 ]. For silicon, let the reverse bias saturation current IS as 0.000000000001. If n is ideality factor with value of 1.5, VT as thermal voltage drop of 0.026 V at room temperature, what is the value of current I that passes through the silicon diode in the heater of evaporator when the forward voltage drop VD = 0.026 V? Please take note that exp is the exponential function with e(1) = 2.718, e(2) = 7.389.

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what is difference between precipitation and crystalisation

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