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MARCET BOILER

MARCET BOILER. Engr. Syed Waheed ul Hasan. MARCET BOILER. Stainless steel pressure vessel Safety relief valve Temperature and pressure transducers Water heater is protected from burn out by setting the maximum operating temperature with a temperature controller. DESCRIPTION OF ASSEMBLY.

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MARCET BOILER

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  1. MARCET BOILER Engr. SyedWaheedulHasan

  2. MARCET BOILER • Stainless steel pressure vessel • Safety relief valve • Temperature and pressure transducers • Water heater is protected from burn out by setting the maximum operating temperature with a temperature controller

  3. DESCRIPTION OF ASSEMBLY • PRESSURE VESSEL Capacity ------- 7 liters Material -------stainless steel 304 Operating Pressure----------10 bars Certification------------ DOSH certified • PRESSURE GAUGE Type ------------Bourdon Tube Range ----------- 0-20 bars (g)

  4. Description and Assembly • PRESSURE TRANSDUCERS Wetted material ------------ stainless steel Case Material---------------- stainless steel Range ---------- 0-16 bars (abs) • TEMPERATURE SENSOR Type RTD (class A) Range ---------- 0-200 oC • SAFETY FEATURES PR valve (set at 15 bars), TC (set at 185 oC)

  5. OBJECTIVE Our objective here is to collect PT (saturation data) by operating the boiler and compare that data with calculated one

  6. CALACULATION PROCEDURES • Obtain the TP saturation data from boiler • Plot this TP data(P on abscissa and T on ordinate) • Measure the slope of the plot at each pressure reading.this gives dT/dP • Obtain the values of calculated slope by ClausiusClapeyron equation Feeding it the values of TsatVfg and hfg from Steam table. • Calculate the difference of these slopes which gives you the accuracy of of the ClausiusClapeyron equation and strenghtens your measured readings

  7. COLLECTING THE SATURATION DATA

  8. HOW TO MAKE IT SIMPLE… • As it is a very hectic job to calculate slope of the graph at 50 points, it can be made easy by using a machine for that i.e. your PC will calculate it for u. • All you need to do is to tell your machine what it has to do for u, i.e. communicate with your machine. It need a machine language and you can use one that suits you. Lets use MATLABfor that

  9. MATLAB • P=[1 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3 3.1 3.2 3.3 3.4 3.5 3.6 3.8 4 4.2 4.4 4.6 4.8 5 5.2 5.4 5.6 5.8 6 6.2 6.4 6.6 6.8 7 7.5 8 8.5 9 9.5 10]; • T=[373 375.4 378.1 380.1 382.6 384.5 386.6 388.5 390.3 391.9 393.5 394.8 396.6 398.1 399.3 400.7 401.9 403.3 404.5 405.7 406.8 407.8 408.9 410.1 411.3 412.4 413.2 415 416.8 418.8 420.3 421.9 423.6 425.1 426.7 428.1 429.7 431 432.1 433.4 434.8 435.9 437.2 438.4 440.3 443.8 446.3 448.6 450.8 452.9];

  10. TT=polyfit(P,T,4) • fitTvalues=polyval(TT,P) • plot(P,fitTvalues) • hold on • plot(P,T) • slope=polyder(TT) • slopeval=polyval(slope,P) • measured=slopeval./100

  11. ASSIGNMENTto be submitted on 19th May • What are pressure transducers,how they work? Group 1 ok • What is RTD. Working principle,its types and reason for different types of RTD? 2 ok • Comparison of RTD with a Thermocouple? 3 ok • What is Pressure relief valve, usage, construction of one mounted on your lab boiler? Group 4 • Comparison of PRV with rupture disk? 5 ok • SS-304, reason for use.why not SS-316? 6 ok

  12. Submit only one page with your roll numbers mentioned on back side. Don’t use title page. • Address the 4 question in your practical notebook on the 9th page of the MARCET BOILER mannual Thank you

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