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Cost Estimation Of A Heat Exchanger

Cost Estimation Of A Heat Exchanger. Group Members Chinthaka Perera Chris Peng Sandy Lee Terry Peters. 540:343 Engineering Economics Spring 1998. Outline. Introduction and Problem Definition Designs of Heat Exchangers Base Cost Estimation Complete Cost Estimation

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Cost Estimation Of A Heat Exchanger

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  1. CostEstimationOfAHeatExchanger Group Members Chinthaka Perera Chris Peng Sandy Lee Terry Peters 540:343 Engineering Economics Spring 1998

  2. Outline • Introduction and Problem Definition • Designs of Heat Exchangers • Base Cost Estimation • Complete Cost Estimation • Conclusions & Recommendation • Questions 540:343 Engineering Economics Spring 1998

  3. Problem Definition • Heat cold water from 15 oC to 85 oC using the minimum resources • Area Limited to 50 square meters • Minimize the cost of operation and maintenance of the machine 540:343 Engineering Economics Spring 1998

  4. Shell And Tube Heat Exchanger Efficiency: 48% Power: 7.317x10 5 Watts Length of Pass: 4.7 meters, Life Cycle 5 yr. 540:343 Engineering Economics Spring 1998

  5. Counter Flow Heat Exchanger Efficiency: 48% Power: 7.317 x 105 Watts Length 129.55 meters, 8 revolutions, Life Cycle: 5yr. 540:343 Engineering Economics Spring 1998

  6. Cross Flow Heat Exchanger Efficiency: 61% Power:2.92 x 105 Watts Area: 28.4 square meters, Tubes: 7898, Life Cycle 25 yr. 540:343 Engineering Economics Spring 1998

  7. Summary of Designs 540:343 Engineering Economics Spring 1998

  8. Base Cost Estimating Technique Base Cost = Cost of Materials to Construct Heat Exchanger + Cost Of Installation of Heat Exchanger Conversion of Base Cost to Annual Worth using MARR = 10% AWHeat Exchanger = (Base Cost) x (A/P,10%,Life Cycle) 540:343 Engineering Economics Spring 1998

  9. Base Cost Estimation Of Heat Exchanger Designs Using Annual Worth and assuming repeatability AWShell and Tube = - $ 14400 AWCounter flow = - $ 63400 AWCross flow = - $2200 Best Alternative for Heat Exchanger is Cross Flow Heat Exchanger 540:343 Engineering Economics Spring 1998

  10. Complete Cost Estimating Technique Complete Cost = Base Cost + Operation and Maintenance Conversion of Complete Cost to Annual Worth using MARR = 10% AWHeat Exchanger = (Base Cost) x (A/P,10%,Life Cycle) + (O & M) x (A/P,10%,Life Cycle) 540:343 Engineering Economics Spring 1998

  11. Complete Cost Estimation • Base Cost of Cross Flow Heat Exchanger - $ 2200 • Operation and Maintenance Cost + Cost of Gas - $ 2300 Total Cost Over Life Cycle - $ 4500 540:343 Engineering Economics Spring 1998

  12. Conclusions & Recommendation • Cross Flow Heat Exchanger is the most effective for the purpose • Cross Flow Heat Exchanger is the most Cost Effective Aside: The Shell & Tube and Counter flow reused waste to heat water. Recommendation : Cross Flow Heat Exchanger 540:343 Engineering Economics Spring 1998

  13. Questions ?? Design of Heat Exchanger…?? Base Cost Estimating Technique…?? Complete Cost Estimation…?? Choice of Heat exchanger …?? 540:343 Engineering Economics Spring 1998

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