SlideShare a Scribd company logo
1 of 9
Presented by
Dr. R. RAJA, M.E., Ph.D.,
Associate Professor, Department of EEE,
Muthayammal Engineering College, (Autonomous)
Namakkal (Dt), Rasipuram – 637408
MUTHAYAMMAL ENGINEERING COLLEGE
(An Autonomous Institution)
(Approved by AICTE, New Delhi, Accredited by NAAC, NBA & Affiliated to Anna University),
Rasipuram - 637 408, Namakkal Dist., Tamil Nadu, India.
Electrical Drives and Control
Heating and Cooling Curves
Heating and Cooling Curves
 A machine can be considered as a homogeneous body developing heat
internally at uniform rate and dissipating heat proportionately to its temperature
rise,
Relation Ship Between Temperature Rise and Time:
8/20/2021 2
 Assume that a machine attains a temperature rise after the lapse of time t
seconds.
 In an element of time “dt” a small temperature rise “d” takes place.
8/20/2021 3
Then,
Heat developed = p.dt
Heat developed = Gh.dq
Heat dissipated = Sql. dt
Therefore, total heat developed=heat stored + heat dissipated
Contd..
Contd..
8/20/2021 4
Contd..
8/20/2021 5
Heating time constant:
 Heating time constant is defined as the time taken by the machine to attain
0.623 of its final steady temperature rise.
Contd..
8/20/2021 6
Contd..
8/20/2021 7
Cooling time constant
8/20/2021 8
Contd..
Thank You
8/20/2021 9

More Related Content

Similar to electricaldrivesandcontrol-210820041521 (1).pptx

Ijarcet vol-2-issue-7-2217-2222
Ijarcet vol-2-issue-7-2217-2222Ijarcet vol-2-issue-7-2217-2222
Ijarcet vol-2-issue-7-2217-2222
Editor IJARCET
 
Ijarcet vol-2-issue-7-2217-2222
Ijarcet vol-2-issue-7-2217-2222Ijarcet vol-2-issue-7-2217-2222
Ijarcet vol-2-issue-7-2217-2222
Editor IJARCET
 
Thermal Stress Analysis of Electro Discharge Machining
Thermal Stress Analysis of Electro Discharge MachiningThermal Stress Analysis of Electro Discharge Machining
Thermal Stress Analysis of Electro Discharge Machining
IJESFT
 
Iris Publishers- Journal of Engineering Sciences | Performance and Design Opt...
Iris Publishers- Journal of Engineering Sciences | Performance and Design Opt...Iris Publishers- Journal of Engineering Sciences | Performance and Design Opt...
Iris Publishers- Journal of Engineering Sciences | Performance and Design Opt...
IrisPublishers
 

Similar to electricaldrivesandcontrol-210820041521 (1).pptx (20)

Ijarcet vol-2-issue-7-2217-2222
Ijarcet vol-2-issue-7-2217-2222Ijarcet vol-2-issue-7-2217-2222
Ijarcet vol-2-issue-7-2217-2222
 
Ijarcet vol-2-issue-7-2217-2222
Ijarcet vol-2-issue-7-2217-2222Ijarcet vol-2-issue-7-2217-2222
Ijarcet vol-2-issue-7-2217-2222
 
Application Prospects of Thermoelectric Technique - Crimson Publishers
Application Prospects of Thermoelectric Technique - Crimson PublishersApplication Prospects of Thermoelectric Technique - Crimson Publishers
Application Prospects of Thermoelectric Technique - Crimson Publishers
 
resume_new.PDF
resume_new.PDFresume_new.PDF
resume_new.PDF
 
Experimental study of a tubular solar still with phase change material
Experimental study of a tubular solar still with phase change materialExperimental study of a tubular solar still with phase change material
Experimental study of a tubular solar still with phase change material
 
EXPERIMENTAL STUDY OF A TUBULAR SOLAR STILL WITH PHASE CHANGE MATERIAL
EXPERIMENTAL STUDY OF A TUBULAR SOLAR STILL WITH PHASE CHANGE MATERIAL EXPERIMENTAL STUDY OF A TUBULAR SOLAR STILL WITH PHASE CHANGE MATERIAL
EXPERIMENTAL STUDY OF A TUBULAR SOLAR STILL WITH PHASE CHANGE MATERIAL
 
American Journal of Nanotechnology & Nanomedicine
American Journal of Nanotechnology & NanomedicineAmerican Journal of Nanotechnology & Nanomedicine
American Journal of Nanotechnology & Nanomedicine
 
THERMAL ANALYSIS OF A HEAT SINK FOR ELECTRONICS COOLING
THERMAL ANALYSIS OF A HEAT SINK FOR ELECTRONICS COOLINGTHERMAL ANALYSIS OF A HEAT SINK FOR ELECTRONICS COOLING
THERMAL ANALYSIS OF A HEAT SINK FOR ELECTRONICS COOLING
 
Experimental and Modeling Dynamic Study of the Indirect Solar Water Heater: A...
Experimental and Modeling Dynamic Study of the Indirect Solar Water Heater: A...Experimental and Modeling Dynamic Study of the Indirect Solar Water Heater: A...
Experimental and Modeling Dynamic Study of the Indirect Solar Water Heater: A...
 
Radial Heat conduction.docx
Radial Heat conduction.docxRadial Heat conduction.docx
Radial Heat conduction.docx
 
combustion thermo-acoustic
combustion thermo-acousticcombustion thermo-acoustic
combustion thermo-acoustic
 
Thermal Stress Analysis of Electro Discharge Machining
Thermal Stress Analysis of Electro Discharge MachiningThermal Stress Analysis of Electro Discharge Machining
Thermal Stress Analysis of Electro Discharge Machining
 
THERMAL ANALYSIS OF HEAT SINK (VARIABLE SHIELD PROFILE) USED IN ELECTRONIC CO...
THERMAL ANALYSIS OF HEAT SINK (VARIABLE SHIELD PROFILE) USED IN ELECTRONIC CO...THERMAL ANALYSIS OF HEAT SINK (VARIABLE SHIELD PROFILE) USED IN ELECTRONIC CO...
THERMAL ANALYSIS OF HEAT SINK (VARIABLE SHIELD PROFILE) USED IN ELECTRONIC CO...
 
30120140503011
3012014050301130120140503011
30120140503011
 
Thermal stresses
Thermal stressesThermal stresses
Thermal stresses
 
Conduction heat transfer | heat transfer | heat | U.O.B
Conduction heat transfer | heat transfer | heat | U.O.BConduction heat transfer | heat transfer | heat | U.O.B
Conduction heat transfer | heat transfer | heat | U.O.B
 
Iris Publishers- Journal of Engineering Sciences | Performance and Design Opt...
Iris Publishers- Journal of Engineering Sciences | Performance and Design Opt...Iris Publishers- Journal of Engineering Sciences | Performance and Design Opt...
Iris Publishers- Journal of Engineering Sciences | Performance and Design Opt...
 
Use of exhaust heat energy of two wheelers to generate power by seebeck effect
Use of exhaust heat energy of two wheelers to generate power by seebeck effectUse of exhaust heat energy of two wheelers to generate power by seebeck effect
Use of exhaust heat energy of two wheelers to generate power by seebeck effect
 
Analysis of thermal fatigue failure using IoT
Analysis of thermal fatigue failure using IoTAnalysis of thermal fatigue failure using IoT
Analysis of thermal fatigue failure using IoT
 
Modeling and Simulation of Thermal Stress in Electrical Discharge Machining ...
Modeling and Simulation of Thermal Stress in Electrical  Discharge Machining ...Modeling and Simulation of Thermal Stress in Electrical  Discharge Machining ...
Modeling and Simulation of Thermal Stress in Electrical Discharge Machining ...
 

Recently uploaded

Structural Analysis and Design of Foundations: A Comprehensive Handbook for S...
Structural Analysis and Design of Foundations: A Comprehensive Handbook for S...Structural Analysis and Design of Foundations: A Comprehensive Handbook for S...
Structural Analysis and Design of Foundations: A Comprehensive Handbook for S...
Dr.Costas Sachpazis
 
AKTU Computer Networks notes --- Unit 3.pdf
AKTU Computer Networks notes ---  Unit 3.pdfAKTU Computer Networks notes ---  Unit 3.pdf
AKTU Computer Networks notes --- Unit 3.pdf
ankushspencer015
 
UNIT-V FMM.HYDRAULIC TURBINE - Construction and working
UNIT-V FMM.HYDRAULIC TURBINE - Construction and workingUNIT-V FMM.HYDRAULIC TURBINE - Construction and working
UNIT-V FMM.HYDRAULIC TURBINE - Construction and working
rknatarajan
 

Recently uploaded (20)

Call Girls in Nagpur Suman Call 7001035870 Meet With Nagpur Escorts
Call Girls in Nagpur Suman Call 7001035870 Meet With Nagpur EscortsCall Girls in Nagpur Suman Call 7001035870 Meet With Nagpur Escorts
Call Girls in Nagpur Suman Call 7001035870 Meet With Nagpur Escorts
 
High Profile Call Girls Nagpur Meera Call 7001035870 Meet With Nagpur Escorts
High Profile Call Girls Nagpur Meera Call 7001035870 Meet With Nagpur EscortsHigh Profile Call Girls Nagpur Meera Call 7001035870 Meet With Nagpur Escorts
High Profile Call Girls Nagpur Meera Call 7001035870 Meet With Nagpur Escorts
 
Java Programming :Event Handling(Types of Events)
Java Programming :Event Handling(Types of Events)Java Programming :Event Handling(Types of Events)
Java Programming :Event Handling(Types of Events)
 
Structural Analysis and Design of Foundations: A Comprehensive Handbook for S...
Structural Analysis and Design of Foundations: A Comprehensive Handbook for S...Structural Analysis and Design of Foundations: A Comprehensive Handbook for S...
Structural Analysis and Design of Foundations: A Comprehensive Handbook for S...
 
(PRIYA) Rajgurunagar Call Girls Just Call 7001035870 [ Cash on Delivery ] Pun...
(PRIYA) Rajgurunagar Call Girls Just Call 7001035870 [ Cash on Delivery ] Pun...(PRIYA) Rajgurunagar Call Girls Just Call 7001035870 [ Cash on Delivery ] Pun...
(PRIYA) Rajgurunagar Call Girls Just Call 7001035870 [ Cash on Delivery ] Pun...
 
AKTU Computer Networks notes --- Unit 3.pdf
AKTU Computer Networks notes ---  Unit 3.pdfAKTU Computer Networks notes ---  Unit 3.pdf
AKTU Computer Networks notes --- Unit 3.pdf
 
Top Rated Pune Call Girls Budhwar Peth ⟟ 6297143586 ⟟ Call Me For Genuine Se...
Top Rated  Pune Call Girls Budhwar Peth ⟟ 6297143586 ⟟ Call Me For Genuine Se...Top Rated  Pune Call Girls Budhwar Peth ⟟ 6297143586 ⟟ Call Me For Genuine Se...
Top Rated Pune Call Girls Budhwar Peth ⟟ 6297143586 ⟟ Call Me For Genuine Se...
 
Introduction to Multiple Access Protocol.pptx
Introduction to Multiple Access Protocol.pptxIntroduction to Multiple Access Protocol.pptx
Introduction to Multiple Access Protocol.pptx
 
UNIT-V FMM.HYDRAULIC TURBINE - Construction and working
UNIT-V FMM.HYDRAULIC TURBINE - Construction and workingUNIT-V FMM.HYDRAULIC TURBINE - Construction and working
UNIT-V FMM.HYDRAULIC TURBINE - Construction and working
 
UNIT - IV - Air Compressors and its Performance
UNIT - IV - Air Compressors and its PerformanceUNIT - IV - Air Compressors and its Performance
UNIT - IV - Air Compressors and its Performance
 
Call Girls Service Nagpur Tanvi Call 7001035870 Meet With Nagpur Escorts
Call Girls Service Nagpur Tanvi Call 7001035870 Meet With Nagpur EscortsCall Girls Service Nagpur Tanvi Call 7001035870 Meet With Nagpur Escorts
Call Girls Service Nagpur Tanvi Call 7001035870 Meet With Nagpur Escorts
 
Water Industry Process Automation & Control Monthly - April 2024
Water Industry Process Automation & Control Monthly - April 2024Water Industry Process Automation & Control Monthly - April 2024
Water Industry Process Automation & Control Monthly - April 2024
 
Coefficient of Thermal Expansion and their Importance.pptx
Coefficient of Thermal Expansion and their Importance.pptxCoefficient of Thermal Expansion and their Importance.pptx
Coefficient of Thermal Expansion and their Importance.pptx
 
Booking open Available Pune Call Girls Koregaon Park 6297143586 Call Hot Ind...
Booking open Available Pune Call Girls Koregaon Park  6297143586 Call Hot Ind...Booking open Available Pune Call Girls Koregaon Park  6297143586 Call Hot Ind...
Booking open Available Pune Call Girls Koregaon Park 6297143586 Call Hot Ind...
 
(INDIRA) Call Girl Aurangabad Call Now 8617697112 Aurangabad Escorts 24x7
(INDIRA) Call Girl Aurangabad Call Now 8617697112 Aurangabad Escorts 24x7(INDIRA) Call Girl Aurangabad Call Now 8617697112 Aurangabad Escorts 24x7
(INDIRA) Call Girl Aurangabad Call Now 8617697112 Aurangabad Escorts 24x7
 
Introduction to IEEE STANDARDS and its different types.pptx
Introduction to IEEE STANDARDS and its different types.pptxIntroduction to IEEE STANDARDS and its different types.pptx
Introduction to IEEE STANDARDS and its different types.pptx
 
ONLINE FOOD ORDER SYSTEM PROJECT REPORT.pdf
ONLINE FOOD ORDER SYSTEM PROJECT REPORT.pdfONLINE FOOD ORDER SYSTEM PROJECT REPORT.pdf
ONLINE FOOD ORDER SYSTEM PROJECT REPORT.pdf
 
BSides Seattle 2024 - Stopping Ethan Hunt From Taking Your Data.pptx
BSides Seattle 2024 - Stopping Ethan Hunt From Taking Your Data.pptxBSides Seattle 2024 - Stopping Ethan Hunt From Taking Your Data.pptx
BSides Seattle 2024 - Stopping Ethan Hunt From Taking Your Data.pptx
 
Sheet Pile Wall Design and Construction: A Practical Guide for Civil Engineer...
Sheet Pile Wall Design and Construction: A Practical Guide for Civil Engineer...Sheet Pile Wall Design and Construction: A Practical Guide for Civil Engineer...
Sheet Pile Wall Design and Construction: A Practical Guide for Civil Engineer...
 
Porous Ceramics seminar and technical writing
Porous Ceramics seminar and technical writingPorous Ceramics seminar and technical writing
Porous Ceramics seminar and technical writing
 

electricaldrivesandcontrol-210820041521 (1).pptx

  • 1. Presented by Dr. R. RAJA, M.E., Ph.D., Associate Professor, Department of EEE, Muthayammal Engineering College, (Autonomous) Namakkal (Dt), Rasipuram – 637408 MUTHAYAMMAL ENGINEERING COLLEGE (An Autonomous Institution) (Approved by AICTE, New Delhi, Accredited by NAAC, NBA & Affiliated to Anna University), Rasipuram - 637 408, Namakkal Dist., Tamil Nadu, India. Electrical Drives and Control Heating and Cooling Curves
  • 2. Heating and Cooling Curves  A machine can be considered as a homogeneous body developing heat internally at uniform rate and dissipating heat proportionately to its temperature rise, Relation Ship Between Temperature Rise and Time: 8/20/2021 2
  • 3.  Assume that a machine attains a temperature rise after the lapse of time t seconds.  In an element of time “dt” a small temperature rise “d” takes place. 8/20/2021 3 Then, Heat developed = p.dt Heat developed = Gh.dq Heat dissipated = Sql. dt Therefore, total heat developed=heat stored + heat dissipated Contd..
  • 6. Heating time constant:  Heating time constant is defined as the time taken by the machine to attain 0.623 of its final steady temperature rise. Contd.. 8/20/2021 6