Answer / suresh

Plate heat exchangers are pretty widely used In ammonia
refrigeration systems, and they can be much smaller than the
equivalent tubular exchanger. They work best flooded. A
flooded exchanger system needs a way to separate the liquid
from the vapor. A typical system has a vessel which acts as
knockout drum, accumulator and header tank in one, along
with the heat exchanger. Liquid ammonia flows from the
vessel to the exchanger, and liquid/vapor is returned to the
middle of the drum. Vapor is removed from the top of the
drum. The liquid/vapor mixture from the exchanger has a
lower density than the liquid entering the exchanger, so
gravity provides the driving force to circulate the refrigerant.

What is cathodic protection, how it works in Turbine condensers ?

0 Answers   HPCL, HQL,

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What are some common methods for helium leak testing a vacuum system?

0 Answers  

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ENGINEERING PHYSICS - EXAMPLE 30.5 : (a) Let | A > = (Aa Ab Ac), | B > = (Ba Bb Bc), | C > = (Ca Cb Cc). Find | A > + | C > - | B > in term of Aa, Ab, Ac, Ba, Bb, Bc, Ca, Cb and Cc. (b) Let d | E > = d (Ea Eb Ec) = (d Ea d Eb d Ec). If | E > = (6 7 8), find the value of 10 | E >.

1 Answers  

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is petroleum a mixture of hydrocarbon?

5 Answers  

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Plz if anybody has placement paper of HAL mail me i m Chemical engg my id er.kotnala@gmail.com

0 Answers   HAL, IOCL,

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what is the hearth and arch pressure in furnace?

0 Answers   IFFCO,

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Question 85 - (a) Three genes, I, J and K are available. All these genes are linked with respect to one another. If the percent recombination between I and J is 8 %, that between J and K is 10 %, and that between K and I is 18 %, what is the order of the gene? (b) Twenty six genes, a, b, c, d, e, f, ... x, y and z are available. All these genes are linked with respect to one another. If the percent recombination between a and b is 3 %, between b and c is 3 %, between c and d is 3 %, ... between w and x is 3 %, between x and y is 3 %, between y and z is 3 %, then what is the percentage recombination between b and y?

1 Answers  

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GENETIC ENGINEERING - EXAMPLE 27.4 : According to Hardy-Weinberg Equation, p x p + 2 x p x q + q x q = 1 where p = dominant allele frequency and q = recessive allele frequency. Let p + q = 1. Fraction of population has 2 copies of the p gene = p x p. Fraction of population has 2 copies of the q gene = q x q. Fraction of population has a copy of p gene and a copy of q gene = 2 x p x q. In a small town, the allele frequency is q = 0.2 for a recessive gene, the delta-32 mutation, that gives human protection from HIV infection. (a) Find the allele frequency of a dominant gene, p. (b) What percent of the population has at least a copy of the gene that cause the population either immune to HIV or less susceptible to the disease?

1 Answers  

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What are the three classes of organic solvents?

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QUANTUM CHEMISTRY AND CHEMICAL ENGINEERING - EXAMPLE 31.3 : In photoelectrical effect analysis of quantum chemistry, let E = kinetic energy of electron, p = intensity of UV light, f = frequency of UV light. According to Classical Theory, E = c for all values of f, E = mp. According to Quantum Theory, E = c for all values of p, E = mf + c. In a graph, m and c are constants where m is slope and c is y intercept. If m = 2 and c = 3 with similar value of E : (a) find the value of p according to Classical Theory; (b) find the value of f according to Quantum Theory.

1 Answers  

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

0 Answers  

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What is are the main terms in Unit Operations? and what is its charecteristics?

8 Answers   HPCL,

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