PRESENTED AT BITS EDU CAMPUS

EXPERIMENT ON PERFORMANCE AND EXERGY ANALYSIS OF MNRE SPONSERED SOLAR PARABOLIC DISH CONCENTRATOR SYSTEM AT UML, VADODARA

IDP @ UNIVERSAL MEDICAP LTD. 110050119055 RANA AKSHAYKUMAR A. 110050119064 PARMAR HITENDRA V. 110050119103 DOSHI ANKUSH S. 110050119074 PARMAR PARESH K.

Internal Guide : Prof. VANITA THAKKAR External Guide : Mr. JAGDISH PATEL

27th March, 2015

INTRODUCTION• This is an Industry Defined Project (IDP) for : Performance

and exergy analysis of Parabolic Dish Solar Concentrator (PDSC) installed at Universal Medicap Limited, Vadodara.

• The PDSCs are used to increase the temperature of thermic fluid up to required level.

• At UML, there are two systems installed for the heating of thermic fluid : – Biomass-fuelled Boiler System – Megawatt Dish Solar Concentrators, primarily for : – vulcanization of rubber for making caps for bottling of medicines– producing “water for injection (wfi) grade water” for washing

the rubber caps.

• The company plans to use solar concentrators on a regular basis, keeping biomass fuelled boiler as a standby for the solar concentrator system.

• A group of four students of the previous batch had done their project on : “ PERFORMANCE MONITORING OF MNRE SPONSORED PARABOLIC DISH TYPE SOLAR CONCENTRATORS AT UNIVERSAL MEDICAP UML, VADODARA.”

• The present work is a continuation of that work. It will include study and then experimentally working on the Performance Analysis Model developed by them to check its validity.

• Further, an Exergy Analysis Model will be prepared for Solar Parabolic Dish Concentrators and experiments will be carried out on it.

INTRODUCTION (CONTD.)

LAYOUT OF BOILER SYSTEM

PDSC INSTALLED AT UML Ltd.

Nomenclature of SPDC

Principle of SPDC

PROBLEM STATEMENT• Study of solar parabolic disc concentrator at

UML.• Study of performance analysis model

developed by student of previous batch.• Experimental validation of performance

analysis model.• Development of methodology for exergy

analysis.• Experimentation on exergy analysis.• Analysis, Result & Conclusion.

PROJECT OBJECTIVES Utilize the solar energy for heating the thermic

fluid. Reduce the fuel consumption to increase the

temperature of thermic fluid. Validate the Performance Analysis Methodology for

PDSC to optimize the efficiency of PDSC. Protecting Environment by use of environment-

friendly technology.

METHODOLOGYExperiments on performance analysis, along with the

following tasks on the exergy analysis:• Literature Study : Study of related literature on

performance of solar parabolic dish concentrators & exergy analysis of various systems.

• Study of performance analysis : Study of research papers and report done by previous batch.

• Experiment on performance analysis : Prediction of performance calculations done / going on. Actual performance data awaited.

METHODOLOGY(CONTD.)

• Study of exergy analysis : Study the various

research paper of development of methodology for

exergy analysis of solar parabolic dish

concentrators.

• Development of methodology for exergy analysis :

Select the optimum method for exergy analysis.

WORK PROGRESS • Published review paper in IOSR.• Prepared Excel sheet for performing exergy

analysis.• Collecting experimental data from industry

and analyzing it.• Calculate the theoretical efficiency and actual

efficiency of exergy of PDSC system.• Minimize the difference between both

efficiency and optimize the performance.

LITERATURE STUDY

• Review paper by Prof. Vanita Thakkar, (June-2013) ‘Status of Parabolic Dish Solar Concentrators’, Vadodara, India.

• Review the previous batch report and Study the performance analysis of PDSC and get experimental data.

• Study of various patents related to exergy analysis of PDSC and collected information about exergy analysis.

• Review thesis of exergy by P. I. Moynihan(NASA) and study basics of exergy.

LITERATURE STUDY(CONTI…)

• Study Exergetic Analysis and Optimisation of a Parabolic Dish Collector for Low Power Application by Lloyd C. Ngo and developed model of exergy analysis.

INTERNATIONAL RESEARCH PAPER: “Performance analysis methodology for PDSC system” in IOSR journal.http://www.iosrjournals.org/iosr-jmce/pages/12(1)Version-2.html

Vanita Thakkar <vanitaa.thakkar@gmail.com>Sat, Mar 21, 2015 at 5:47 PMTo: Akshay Rana <mechakshay55@gmail.com>, Ankush Doshi <adidas85acb@gmail.com>

From: IOSR JMCE <iosrjmce@gmail.com>Date: Saturday, March 21, 2015Subject: IOSR Journals: ANED-DDL (Digital Data link) Number.To: Vanita Thakkar <vanitaa.thakkar@gmail.com>

Dear Author, Your paper has been indexed successfully in ANED (American National Engineering Database). Your article ANED-DDL (Digital Data link) number is 13.1864/iosr-Jmce-N01212101114 Please visit website www.aned.us About ANED: American National Engineering Database is authorised collection of engineering & technology

online Series, Serials, Conferences, Seminars, Special talks, journal's papers, Short Communications, Case Studied, Research notes, approved by ANED body. IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE) is among very few Journals which are selected by ANED governing board.

Thanks and Welcome!!!

EMAIL FROM ANED

PERFORMANCE ANALYSIS OF ACTUAL DATA

Sr no. Date Time DNI(W/m^2) Efficiency of receiver

1. 24th March 10:20 753.6 64.7

2. 24th March 10:41 785 65.2

3. 24th March 11:25 805 66.30

4. 24th March 12:00 814.5 66.41

5. 24th March 12:45 808.9 66.45

6. 24th March 13:30 799 66.48

7. 24th March 15:00 705.8 66.39

10:20 10:41 11:25 12:00 12:45 01:30 03:0063.5

64

64.5

65

65.5

66

66.5

67

EFFICIENCY

EFFICIENCY

STEPS FOR CALCULATING EFFICIENCY :THERMAL ANALYSIS OF PDSC :• Collector thermal efficiency :

ƞc= Qu/Qs• The optical efficiency ƞo:

ƞo= Λρταγcosθƞo= Λρταγ

• The total heat loss rate Ql :Ql = Qlr + Qlc + Qlk.

• The expected efficiency of the concentrator system :Ƞexpected = Qr – (Qcond +Qconv + Qrad ) / Qs

• The actual efficiency of the concentrator system :Quseful = m Cp (Tout – Tin) Ƞactual = Quseful / Qs

EXERGY ANALYSIS CALCULATIONEXERGY ANALYSIS OF PDSC:• Exergy balance equation: ∑ Ein - ∑Eout - ∑Eloss - ∑Echange- ∑Edest =0• The exergy accompanying an incompressible fluid flow : Ein,f= mCp(Tin-Ta-Taln(Tin/Ta))+m(∆p/)• The outlet exergy rate includes only the exergy rate of the outlet fluid flow: Ef,out= mCp(Tout-Ta-Taln(Tout/Ta))+m(∆p/)• the exergy that is accumulated by fluid flow through the receiver and is

expressed as: ∑Egain =∑Ef,out -∑Ein,f

• Using Petela’s approach of defining the exergy of solar radiation, the exact exergy solar radiation :

Ein,r= IbȠpAa

EXERGY ANALYSIS CALCULATION(CONTI….)

• The exergy efficiency is the ratio of the gain exergy to solar radiation exergy expressed as:

ȠE=Egain/Ein,r

OR

ȠE=1-(∑Eloss-∑Echange-∑Edes)/Ein,r

exergy leakage rate out to the surroundings due to optical errors and heat transfer to ambient in a solar receiver:

∑Eloss=∑El,opt - ∑El,th

optical exergy rate : ∑El,opt=(1–Ƞo)IbȠpAa

Thermal exergy loss: ∑El,th=UlAr(Tr-Ta)2/Tr

EXERGY ANALYSIS CALCULATION(CONTI…)

• Under steady state conditions, ∑Echange = 0

• Exergy destruction is caused by irreversibilities in the system and there are two ways of exergy destruction in solar collectors:

The exergy destruction due to pressure drop : Edes,∆p=Ta(m∆p/)((ln(Tour/Tin))/(Tout–Tin)) The exergy destruction due to heat absorption: Edes,abs=ȠoIbAaTa((1/Tr)-(1/Ts)) The exergy destroyed due to heat transfer by conduction :

Edes,cond=mCpTa(ln(Tout/Tin)–(Tout–Tin)Tr)

• The exergy efficiency :

CONCLUSION• The methodology for performance analysis of

PDSC considers the computation of the thermal efficiency of the system. Various losses are also computed and the extent of unaccounted losses is determined.

• A comparison of the expected and actual performance is done and analysis of the difference is carried out to rule out avoidable losses, leading to lowering of the performance of the system.

CONCLUSION(CONTI….)

• Exergy Model has been developed• Exergy Analysis Experimentation, along with

Performance Analysis Experimentation is going on.

REFERENCES• Vanita Thakkar, (June-2013) ‘Status of Parabolic Dish Solar

Concentrators’, International Journal of Enhanced Research in Science, Technology and Engineering (IJERSTE), ISSN: 2319-7463, June-2013, Vol. 2, Issue 6, pp. 42-49.

• Project Report on “PERFORMANCE MONITORING OF MNRE SPONSORED PARABOLIC DISH TYPE SOLAR CONCENTRATORS AT UNIVERSAL MEDICAP LIMITED, SAVLI, VADODARA” by Meet Vekaria, Rahul Solanki, Mehul Marvania and Rakesh Ladumor of BIT, Varnama, Vadodara (for partial fulfillment for the award of the degree of BACHELOR OF ENGINEERING in MECHANICAL ENGINEERING) under the guidance of Prof. Vanita Thakkar

REFERENCE (CONTD.)

• Papers from Workshop on “Use of Solar Technologies for Process Heating and Cooling Applications in Indian Industries”, organized by INDIAN CHEMICAL COUNCIL (ICC) at Vadodara on 27-09-2014, viz.,

• HEPBASLI, A., 2008. A key review on” exergetic analysis and assessment of renewable energy resources “for a sustainable future. Renewable and Sustainable Energy Reviews, 12(3), pp. 593-661.

• TYAGI, S.K., WANG, S., SINGHAL, M.K., KAUSHIK, S.C. and PARK, S.R., 2007.” Exergy analysis and parametric study of concentrating type solar collectors” International Journal of Thermal Sciences, 46(12), pp. 1304-1310.

THANK YOU