Premium Essay

Chem Sys

In: Computers and Technology

Submitted By pranam
Words 5860
Pages 24
SHELL & TUBE HEAT EXCHANGER DESIGN

TFD-HE13 - Shell & Tube Heat Exchager Design

1

Introduction q Shell & tube heat exchangers are the most versatile type of heat exchangers.

§ They are used in process industries, in conventional and nuclear power stations, steam generators, etc

§ They are used in many alternative energy applications including ocean, thermal and geothermal. q Shell & tube heat exchangers provide relatively large ratios of heat transfer area to volume. They can be easily cleaned.

q

TFD-HE13 - Shell & Tube Heat Exchager Design

2

Shell & Tube Heat Exchangers q Shell & tube type heat exchangers are built of tubes (round or rectangular in general) mounted in shells (cylindrical, rectangular or arbitrary shape). Many variations of this basic type is available.

q

§ The differences lie mainly in the detailed features of construction and provisions for differential thermal expansion between the tubes and the shell.

Shell inlet

Tube inlet

Tube outlet

Shell outlet

TFD-HE13 - Shell & Tube Heat Exchager Design

3

Shell & Tube Heat Exchangers

U-Tube, baffled, single pass shell & tube heat exchanger

Two pass tube, baffled single pass shell & tube heat exchanger

Two pass tube, floating head, baffled single pass shell & tube heat exchanger
TFD-HE13 - Shell & Tube Heat Exchager Design 4

Shell Types q q

TEMA (the Tubular Exchangers Manufacturers Association) publishes standards defining how shell and tube exchangers should be built. They define a naming system that is commonly used. Shells are also typically purchased in standard sizes to control costs. Inside the shell, baffles (dividers) are installed to direct the flow around the tubes, increase velocity, and promote cross flow. They also help support the tubes. The baffle cut is the ratio of the baffle window height to the...

Similar Documents

Premium Essay

Chem Sys

...SHELL & TUBE HEAT EXCHANGER DESIGN TFD-HE13 - Shell & Tube Heat Exchager Design 1 Introduction q Shell & tube heat exchangers are the most versatile type of heat exchangers. § They are used in process industries, in conventional and nuclear power stations, steam generators, etc § They are used in many alternative energy applications including ocean, thermal and geothermal. q Shell & tube heat exchangers provide relatively large ratios of heat transfer area to volume. They can be easily cleaned. q TFD-HE13 - Shell & Tube Heat Exchager Design 2 Shell & Tube Heat Exchangers q Shell & tube type heat exchangers are built of tubes (round or rectangular in general) mounted in shells (cylindrical, rectangular or arbitrary shape). Many variations of this basic type is available. q § The differences lie mainly in the detailed features of construction and provisions for differential thermal expansion between the tubes and the shell. Shell inlet Tube inlet Tube outlet Shell outlet TFD-HE13 - Shell & Tube Heat Exchager Design 3 Shell & Tube Heat Exchangers U-Tube, baffled, single pass shell & tube heat exchanger Two pass tube, baffled single pass shell & tube heat exchanger Two pass tube, floating head, baffled single pass shell & tube heat exchanger TFD-HE13 - Shell & Tube Heat Exchager Design 4 Shell Types q q TEMA (the Tubular Exchangers Manufacturers Association) publishes standards defining......

Words: 298 - Pages: 2

Premium Essay

Global Strategy of Lg

...Global strategy of LG Electronics as a leading Korean company Tomikazu Hiraga Senior research Fellow NLI Research Institute Economic recovery in advanced countries including Japan is still sluggish, although corporate financial performance has been recovering gradually. And companies whose business activities in emerging countries experiencing an economic boom account for a larger proportion tend to show better financial performance. Leading Korean companies have a larger presence in the world market and attract considerable attention. I will focus on LG Electronics, Inc., a leading company ranking with Samsung Electronics Co., Ltd. in the world’s electrical and electronics industries, with the largest market share in home appliances markets in important emerging countries, such as India, Brazil, and Indonesia, and relatively advanced management methods including corporate governance, which are highly valued, and will discuss features or important points of its global management and personnel strategy in this article. (Reference: Exchange rates as of August 5, 2010 were as follows. The Japanese yen/Korean won foreign exchange rate was approximately ¥0.074 to the Korean won. The Japanese yen/Indian rupee rate was approximately ¥1.87 to the Indian rupee. ) Leading Korean zaibatsu—The LG group The Korean zaibatsu (chaebol), a unique large companies group, is very influential in Korea’s corporate sector. Top 28 companies by market capitalization other than public corporations......

Words: 2429 - Pages: 10

Premium Essay

Idonno

...Global strategy of LG Electronics as a leading Korean company Tomikazu Hiraga Senior research Fellow NLI Research Institute Economic recovery in advanced countries including Japan is still sluggish, although corporate financial performance has been recovering gradually. And companies whose business activities in emerging countries experiencing an economic boom account for a larger proportion tend to show better financial performance. Leading Korean companies have a larger presence in the world market and attract considerable attention. I will focus on LG Electronics, Inc., a leading company ranking with Samsung Electronics Co., Ltd. in the world’s electrical and electronics industries, with the largest market share in home appliances markets in important emerging countries, such as India, Brazil, and Indonesia, and relatively advanced management methods including corporate governance, which are highly valued, and will discuss features or important points of its global management and personnel strategy in this article. (Reference: Exchange rates as of August 5, 2010 were as follows. The Japanese yen/Korean won foreign exchange rate was approximately ¥0.074 to the Korean won. The Japanese yen/Indian rupee rate was approximately ¥1.87 to the Indian rupee. ) Leading Korean zaibatsu—The LG group The Korean zaibatsu (chaebol), a unique large companies group, is very influential in Korea’s corporate sector. Top 28 companies by market capitalization other than public corporations......

Words: 2404 - Pages: 10

Free Essay

Lg-a Youth Brand or Not

...LG targets to improve market share in home entertainment segment Published on: April 26, 2011 - 23:46 More in: * Business MUMBAI: Buoyed by surging income levels in the country, Korean consumer durables manufacturer, LG Electronics, is eyeing a 32 per cent market share in home entertainment products and Rs 20,000-crore revenue (from India) by end-this year. “Presently, we have a 29 per cent market share in home entertainment products in India and expect to up it to 32 per cent by December 2011,” LG Electronics India’s managing director, Mr Soon Kwon, told PTI here. “We are targeting around Rs20,000-crore revenue by end-2011 as against Rs 16,000-crore last year. We are growing fast in India and will continue to grow in the market,” he said. LG Electronics India has nine products in the segment and plans to launch more models in this segment in the coming days. “India is one of our key markets. Every year, we are launching some (new) models of home entertainment products in India. We will continue to launch more models in the coming days,” he said. Around 20 per cent of the company’s revenue comes from rural India and it plans to increase this by beefing-up its distribution by opening more outlets, he said. Presently, the company has 20,000 outlets pan-India. LG Electronics competes with Samsung, Philips and Whirlpool in the domestic market. India contributes 6 per cent to the company’s global revenue, he said, adding, “we expect it to double to 12 per cent in...

Words: 404 - Pages: 2

Free Essay

Managing Media and Communication Lg

...1.0 Introduction of LG Electronics Inc. LG Electronics Inc. is a South Korea multinational electronics company which is also known as the global leader and technology innovator in consumer electronics. The LG Company was a merger of two Korean companies, Lucky and Goldstar, from which the “LG” abbreviation was derived. (Mariush,2012) The company’s headquarter is located in Yeouido-dong, Seoul and the flagship subsidiary of the LG Group. LG has a global sales of KRW (Korean Won) 54.26 trillion which is equal to USD 49 billion in the year 2011. The company operates its business with four business units: mobile communication, air conditioning & energy solution, home entertainment and home appliance. (LG, 2012) It has 75 subsidiaries operates around the world that design and manufacture its products. LG is the world’s second largest flat screen television-set maker after Samsung Electronics Co. (Lee, 2012) Home Entertainment The LG Electronics which is also known as the top global players in home entertainment produces flat panel displays, audio players, video products, monitors, commercial displays and security systems for the consumers and also the commercial markets. LG is not only focusing on creating full-features devices but it is also emphasizing on following the technology boundaries to improve the products. Mobile Communication LG has committed to provide the best ever user experience to expand the next generation of communication by inventing new......

Words: 3058 - Pages: 13

Free Essay

Quality of Tomato Ferti Lized with Nitrogen

...increased, malic decreased and oxalic was constant in all the fertilized samples. Lycopene reached the highest values in N2 and N2P2 samples. INTRODUCTION Tomato, a key vegetable in the Italian Mediterranean diet, has recently gaining been attention in relation to the prevention of some human diseases. This interest is due to the presence of carotenoids and particularly lycopene, which is an unsaturated alkylic compound that appears to be an active compound in the prevention of cancer and cardiovascular risk and in slowing down cellular aging, owing to its high antioxidant and antiradical power (GERSTER 1997; GIOVANNUCCI et al. 1995). Lycopene is found in fresh, redripe tomatoes as all-trans (79-91%) and cis- (9-21%) isomers (STAHH and SIES, 1992; SHI et al. 1999; BOILEAU et al. 2002). Lycopene and vitamins give a measure of the nutraceutical quality, while flavour volatiles, soluble sugars, organic acids, etc. express the nutritional quality. In red-ripe tomato fruit, many volatile compounds have been identified [2(E)-hexenal, hexanal, 3(Z)-hexen-1-ol, β-ionone, 2(E)4(Z)-decadienal, 2 isobutylthiazole, 3(Z)-hexenol, linalool, methylsalicylate, 2-methoxyphenol, 6-methyl- 5-hepten-2-one, 6-methyl-5-hepten-2-ol, 2,3-epoxygeranial, neral, geranial, nerylacetone, β-damascenone,...

Words: 4896 - Pages: 20

Premium Essay

Determination of the Acidity and Peroxide Value of Vegetable Oils

...| 2012 | | | Determination of the acidity and peroxide value of vegetable oils PIEB II – MIB|MIEQ Yen Nguyen-MESG Index Abstract 3 Introduction 4 Methods and Materials 6 Results and Discussion 7 Acidity 7 Peroxide 9 Conclusion 11 References 12 Annex 14 Abstract Nowadays the quality of commercial oil is very concerned by the customers, as oxidative stability is one of the most important factors in keeping the quality of oils, fatty acids in neutral fraction, peroxide values and induction period were evaluated as stability parameters in vegetable oil, in order to detect oxidative changes during cooking, this study performed an experiment to determine the changing in acidity values and peroxide values of one vegetable oil sample in different treatment conditions. Both acidity values and peroxide values were determined using standard titration methods appropriate for each indicator. All acidity values were in range 0.7817 – 0.9138 mg KOH/kg oil and this is below the recommended maximum for acidity index, it means that the oil is accepted for consumption. However there were no significant different between samples in different temperature, this conflicts with some other studies that demonstrated the significant effect of temperature on acid value and oleic acid values. The values of peroxide were in the range of 4.14-5.87 meq/kg oil and also in the acceptable range for peroxide value. The results showed that with a small amount of BHT added......

Words: 2877 - Pages: 12

Free Essay

Essay

...December 2015 - FINAL EXAMINATION SCHEDULE Please verify the location of your exam below. CAREFULLY ensure that you note the correct room according to your LAST NAME ACCT Sec Title ACCT 351 001 Intermediate Financial Acct 1 ACCT 351 Time Prof. FROM Dec 21 6 pm Tsang Aaa - Zzz GYM main gym 20-30 002 Intermediate Financial Acct 1 Dec 21 6 pm Tsang Aaa - Zzz GYM main gym 20-30 ACCT 351 003 Intermediate Financial Acct 1 Dec 21 6 pm Tsang Aaa - Zzz GYM main gym 20-30 ACCT 352 001 Intermediate Financial Acct 2 Dec 21 9 am Cecere Aaa - Zzz ENGTR 0100 ACCT 354 001 Financial Statement Analysis Dec 22 2 pm Scott Aaa - Zzz GYM Fieldhouse 28-31 ACCT 354 002 Financial Statement Analysis Dec 22 2 pm Scott Aaa - Zzz GYM Fieldhouse 28-31 ACCT 361 001 Management Accounting Dec 11 2 pm Parent Aaa - Zzz GYM main gym 1-11 ACCT 361 002 Management Accounting Dec 11 2 pm Parent Aaa - Zzz GYM main gym 1-11 ACCT 361 003 Management Accounting Dec 11 2 pm Parent Aaa - Zzz GYM main gym 1-11 ACCT 362 001 Cost Accounting Dec 17 2 pm Levy Aaa - Zzz GYM Studio 1 1-3 ACCT 385 001 Principles of Taxation Dec 15 2 pm Goldsman Aaa - Zzz GYM BLEACHERS 1-5 ACCT 385 002 Principles of Taxation Dec 15 2 pm Goldsman Aaa - Zzz GYM BLEACHERS 1-5 ACCT 453 001 Advanced Financial Accountin Dec 14 9 am Scott Aaa - Zzz GYM main gym ACCT 463 001 Management Control Dec 11 2 pm Levy Aaa - Zzz GYM Studio......

Words: 17461 - Pages: 70

Free Essay

How to Optimise Seating Plan Using Dynamic Programming

...Instruction Division SEATING ARRANGEMENT FOR THE TEST I & II Course No. Roo m No. No. of Stu den ts 1 7 ALL THE STUDENTS 12/9,4/11 8.00 -- 9.00 AM B310 ALL THE STUDENTS 12/9,4/11 8.00 -- 9.00 AM F102 2011B1AA557H 2012AAPS176H 12/9,4/11 8.00 -- 9.00 AM F103 2012AAPS181H 2012AAPS891H 12/9,4/11 8.00 -- 9.00 AM F105 2011B1A3696H 2012A3PS302H 12/9,4/11 8.00 -- 9.00 AM F103 2012A3PS303H 2012A3PS931H 12/9,4/11 8.00 -- 9.00 AM F106 ALL THE STUDENTS 12/9,4/11 8.00 -- 9.00 AM F106 ALL THE STUDENTS 12/9,4/11 8.00 -- 9.00 AM F107 ALL THE STUDENTS 12/9,4/11 12/9,4/11 8.00 -- 9.00 AM F107 8.00 -- 9.00 AM F107 ALL THE STUDENTS ALL THE STUDENTS 13 8 3 10 9 11 93 23 93 2 Course Name Date Time From To CSC461 DEG611 COMPUTER NETWORKS DYNAMICS & VIBRATION COMPUTER AIDED DRUG DESIGN COMMUNICAT ION SYSTEMS COMMUNICAT ION SYSTEMS COMMUNICAT ION SYSTEMS COMMUNICAT ION SYSTEMS MOLECULAR IMMUNOLOGY ADV CONCRETE STRUCTURES PHARMACOLO GY & TOXICOLOG PHARMACOLO GY I ADV DRUG DELIVERY SYSTEM 12/9,4/11 12/9,4/11 8.00 -- 9.00 AM B310 8.00 -- 9.00 AM B310 ALL THE STUDENTS PHAG541 ECEF311 ECEF311 EEEF311 EEEF311 BIOG514 CEG613 PHAC332 PHAF311 PHAG617 Instruction Division SEATING ARRANGEMENT FOR THE TEST I & II Course No. Roo m No. No. of Stu den ts 1 ALL THE STUDENTS 12/9,4/11 8.00 -- 9.00 AM F108 F109 8.00 -- 9.00 AM F201 2011B1A4700H 2012A4PS301H 2012A4PS304H 2012A4TS916H 2010B1A2651H 2012A2PS400H F202 8.00 -- 9.00 AM F203 2012A2PS402H......

Words: 6192 - Pages: 25

Premium Essay

Adsadasd

...aberidoost et al. DARU Journal of Pharmaceutical Sciences 2013, 21:69 http://www.darujps.com/content/21/1/69 REVIEW ARTICLE Open Access Pharmaceutical supply chain risks: a systematic review Mona Jaberidoost1, Shekoufeh Nikfar1, Akbar Abdollahiasl1,2 and Rassoul Dinarvand1,3* Abstract Introduction: Supply of medicine as a strategic product in any health system is a top priority. Pharmaceutical companies, a major player of the drug supply chain, are subject to many risks. These risks disrupt the supply of medicine in many ways such as their quantity and quality and their delivery to the right place and customers and at the right time. Therefore risk identification in the supply process of pharmaceutical companies and mitigate them is highly recommended. Objective: In this study it is attempted to investigate pharmaceutical supply chain risks with perspective of manufacturing companies. Methods: Scopus, PubMed, Web of Science bibliographic databases and Google scholar scientific search engines were searched for pharmaceutical supply chain risk management studies with 6 different groups of keywords. All results found by keywords were reviewed and none-relevant articles were excluded by outcome of interests and researcher boundaries of study within 4 steps and through a systematic method. Results: Nine articles were included in the systematic review and totally 50 main risks based on study outcome of interest extracted which classified in 7 categories. Most of......

Words: 4846 - Pages: 20

Free Essay

Role of Antioxidants in Prophylaxis and Therapy: a Pharmaceutical Perspective

...Journal of Controlled Release 113 (2006) 189 – 207 www.elsevier.com/locate/jconrel Review Role of antioxidants in prophylaxis and therapy: A pharmaceutical perspective D. Venkat Ratnam, D.D. Ankola, V. Bhardwaj, D.K. Sahana, M.N.V. Ravi Kumar ⁎ Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Phase-X, S.A.S. Nagar, Mohali, Punjab, India - 160062 Received 31 January 2006; accepted 26 April 2006 Available online 13 May 2006 Abstract Antioxidants are emerging as prophylactic and therapeutic agents. These are the agents, which scavenge free radicals otherwise reactive oxygen species and prevent the damage caused by them. Free radicals have been associated with pathogenesis of various disorders like cancer, diabetes, cardiovascular diseases, autoimmune diseases, neurodegenerative disorders and are implicated in aging. Several antioxidants like SOD, CAT, epigallocatechin-3-O-gallate, lycopene, ellagic acid, coenzyme Q10, indole-3-carbinol, genistein, quercetin, vitamin C and vitamin E have been found to be pharmacologically active as prophylactic and therapeutic agents for above mentioned diseases. Antioxidants are part of diet but their bioavailability through dietary supplementation depends on several factors. This major drawback of dietary agents may be due to one or many of the several factors like poor solubility, inefficient permeability, instability due to storage of food, first pass effect and GI degradation.......

Words: 17169 - Pages: 69

Premium Essay

10 Reasons Why We Don’t Need Gm Foods

...10 REASONS WHY we don’t need GM foods With the cost of food skyrocketing – hitting not just shoppers but the poor and hungry in the developing world – genetically modified (GM) foods are once again being promoted as the way to feed the world. But this is little short of a confidence trick. Far from needing more GM foods, there are urgent reasons why we need to ban them altogether. 1. GM foods won’t solve the food crisis A 2008 World Bank report concluded that increased biofuel production is the major cause of the increase in food prices.1 GM giant Monsanto has been at the heart of the lobbying for biofuels (crops grown for fuel rather than food) — while profiting enormously from the resulting food crisis and using it as a PR opportunity to promote GM foods! “The climate crisis was used to boost biofuels, helping to create the food crisis; and now the food crisis is being used to revive the fortunes of the GM industry.” — Daniel Howden, Africa correspondent of The Independent2 “The cynic in me thinks that they’re just using the current food crisis and the fuel crisis as a springboard to push GM crops back on to the public agenda. I understand why they’re doing it, but the danger is that if they’re making these claims about GM crops solving the problem of drought or feeding the world, that’s bullshit.” – Prof Denis Murphy, head of biotechnology at the University of Glamorgan in Wales3 commercialization, genetic engineering has failed to significantly increase US crop......

Words: 2312 - Pages: 10

Free Essay

Pt Notes

...|Prefix/suffix |Meaning |Example(s) | |balano- |Of the glans penis or glans clitoridis |Balanitis | |bi- |twice, double |Binary[disambiguation needed [pic]] | |bio- |life |Biology | |blast(o)- |germ or bud |Blastomere | |blephar(o)- |Of or pertaining to the eyelid |Blepharoplast | |brachi(o)- |Of or relating to the arm |Brachium of inferior colliculus | |brachy- |Indicating 'short' or less commonly 'little' |brachycephalic | |brady- |'slow' |Bradycardia ......

Words: 3541 - Pages: 15

Premium Essay

Marketing

...Energy Drinks: An Assessment of Their Market Size, Consumer Demographics, Ingredient Profile, Functionality, and Regulations in the United States M.A. Heckman, K. Sherry, and E. Gonzalez de Mejia ABSTRACT: The consumption of energy drinks is rapidly increasing, as demonstrated by their large market growth. The targeted demographic group is teenagers, young adults, 18 to 34 y old; although expansion into nontraditional markets is also occurring. It is claimed that energy drinks can offer an increased energy boost related to their ingredient profile of caffeine, taurine, herbal extracts, and vitamins. Research suggests that energy drink formulations, in addition to increasing energy utilization, may also improve mood, enhance physical endurance, reduce mental fatigue, and increase reaction time. However, in most cases, the corresponding mechanisms of action are not clear. In addition, concerns have been raised over their safety and with a currently weak regulatory environment, efforts need to be made to ensure consumer safety. The objective of this article is to review the current U.S. energy drink market with emphasis on its market size, target demographic, active ingredients, potential benefits, safety, and regulations. Introduction Energy drinks refer to beverages that contain, besides calories, caffeine in combination with other presumed energy-enhancing ingredients such as taurine, herbal extracts, and B vitamins. They first appeared in Europe and Asia in the 1960s......

Words: 12218 - Pages: 49

Premium Essay

The Social

...The Social Network screenplay by Aaron Sorkin BASED ON THE BOOK “THE ACCIDENTAL BILLIONAIRES” BY BEN MEZRICH 1 FROM THE BLACK WE HEAR-- 1 MARK (V.O.) Did you know there are more people with genius IQ’s living in China than there are people of any kind living in the United States? ERICA (V.O.) That can’t possibly be true. MARK (V.O.) It is. ERICA (V.O.) What would account for that? MARK (V.O.) Well, first, an awful lot of people live in China. But here’s my question: FADE IN: INT. CAMPUS BAR - NIGHT MARK ZUCKERBERG is a sweet looking 19 year old whose lack of any physically intimidating attributes masks a very complicated and dangerous anger. He has trouble making eye contact and sometimes it’s hard to tell if he’s talking to you or to himself. ERICA, also 19, is Mark’s date. She has a girl-next-door face that makes her easy to fall for. At this point in the conversation she already knows that she’d rather not be there and her politeness is about to be tested. The scene is stark and simple. MARK How do you distinguish yourself in a population of people who all got 1600 on their SAT’s? ERICA I didn’t know they take SAT’s in China. MARK They don’t. I wasn’t talking about China anymore, I was talking about me. ERICA You got 1600? MARK Yes. I could sing in an a Capella group, but I can’t sing. 2. ERICA Does that mean you actually got nothing wrong? MARK I can row crew or invent a 25 dollar PC. ERICA Or you can......

Words: 29858 - Pages: 120