Answer Posted / magx

You can run a centrifugal pump at shut-off head for sometime
say 5-10 minutes but further running may increase the
temperature of the fluid due to churning and can cause
failure of gaskets and lube oil faiukre

Given, T1=600C, constant temperature of wall 800 , length of wit exchanger L=3m, dia=25 mm, Cp=14.91 KJ/kg.K, density ρ=914 kg/m3,mean velocity vm= 2 m/s, film heat transfer coefficient hf=72 Kcal/h.m2.K, what is the outlet temperature?

2049

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Under what circumstances are vortex flowmeters the most accurate?

1253

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I am a Diploma Chemical Engineer by Nirma Uni; and BEng (Hons) Energy & Environmental Engineer by Napier Uni; Edinburg, UK. HPCL chemical engineering test will held on 14th July,09. So, Please send me some previous chemical engineering papers Objective types Or material to give the test.

3580

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I would like to know how to size a partial combustion reactor processing methane and oxygen, as a function of the flowrate and of the pressure.

1049

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What are the assumptions made on conservation equation?

1120

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What is a good method of analyzing powders for composition?

1168

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wha is Adsorption column chromatography?

2543

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Define an additive?

1043

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Are you having any experience in antibody designing?

2564

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The process conditions of the fuel gas are as follows: Temperature = 25 deg C Pressure = 4 bar g Calculate the line size for the fuel gas supply line to the superheater

2295

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Explain what is a good way to get started in doing a plant-wide steam consumption analysis?

1046

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What is the procedure to estimate the friction factor involved in heat exchanger tubes?

1156

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What is difference between overall heat transfer coefficient & individual heat transfer coefficient?

1182

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Explain some good strategies for curing tube vibration in shell and tube exchangers?

1154

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What are the advantages and disadvantages of using gear pumps?

1210

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