How do objects heat and cool? Comparing natural and forced convection - PhysLab

  • Home
  • About Us
    • Overview
    • Centre for Experimental Physics Education (CEPE)
    • Physlab Team
    • Physlab Guidebook
    • Alumni
    • Open Positions
    • Muhammad Sabieh Anwar (Personal)
  • Academics
      • Lab Courses
      • Lab-I (ENGG-100/PHY-100/200)
      • Lab-II (PHY 300/500)
      • AstroLAB
      • Ibn Sahl Corner for Optics
      • Fast Optics
      • Smart Physics
      • Single Photon Quantum Mechanics Lab
      • Chasing Cosmic Ray Muons at Physlab
      • Stories
      • Physics Studio
      • Research Stories
      • Class Activities
      • Courses Taught
      • Class Demonstrations
      • PhysDiary
      • Health and Safety
      • Lab Safety
      • Workplace Organization
  • Research
    • Research Themes
    • Research Internships
    • Research Stories
    • Physics WorldCup
      • International Young Physicists’ Tournament (IYPT) 2019
      • International Young Physicists’ Tournament (IYPT) 2018
      • International Young Physicists’ Tournament (IYPT) 2016
    • Hunerkada
    • Grants
    • Theses and Reports
    • Scientific Publications
    • Invited Talks (Selected)
  • Outreach
    • Media
      • Lectures, Podcasts and Interviews
      • Videobytes
      • YouTube Channel
      • Visitors
      • Testimonials
    • The Scientific Mind Through the Eyes of a Physics Experimenter
    • National Laboratory Immersion Program
      • First Lahore 2012
      • Second Sukkur 2013
      • Third Lahore 2014
      • Fourth Lahore 2016
    • Labview Workshop 2016
    • Open house
      • 2009-2015
      • Open house 2023
    • Khwarizmi Science Society
    • Helping Pakistan’s Universities
      • National University of Technology (NUTECH) 2019
      • Pakistan Institute of Engineering and Applied Sciences
        (PIEAS) 2019 (Final Phase)
      • Pakistan Institute of Engineering and Applied Sciences
        (PIEAS) 2019 (Phase 2)
      • Pakistan Institute of Engineering and Applied Sciences
        (PIEAS) 2018 (Phase 1)
      • National University of Science & Technology 2016
      • Habib University 2014
      • Preston University 2013
      • Ghulam Ishaque Khan Institute of
        Engineering Sciences and Technology 2011
      • Institute of Space Technology 2010
    • The National STEM School
      • STEM School (2018 – 2019)
      • STEM school (2016 – 2017)
    • Abdus Salam Memorial Lecture Series
  • Facilities
    • Laboratories
    • Equipments
    • Devices & Softwares
      • PhysPlot
      • Physlogger
      • Phystrack
    • Mechanical Workshop
    • Inventory
    • 3D Printed Galleria
    • Forms
    • Equipment Howto’s
  • PhysGPT
  • Contact Us

How do objects heat and cool? Comparing natural and forced convection

Home \ experiment
Student Manual

In the present experiment, we heat an object and observe how it cools with time and what factors affect the cooling rate. In one part, we allow the object to be cooled with the help of forced air currents and in the other, the air currents are switched off. We will also learn how to use the thermocouple, an important component of numerous industrially important processes. We will also observe that heating an object does not instantaneously raise its temperature, rather it changes only gradually.

Sample Results Data acquired from Physlogger and its interpretation
Forced and natural convection graphs
Sample results 2022
Experiment Code 1.3B
Version January 11, 2022 - Version 2022-v1

Further Readings and References

  • Heating water: rate correction due to Newton’s cooling
    The Physics Teacher, J. O. Connell, 37, 551, (1999).
  • Introducing specific heat through cooling curves
    The Physics Teacher, C.R. Mattos, A. Gasper, 40, 415, (2002).
  • Do darker objects really cool faster?
    American Journal of Physics, R.A. Bartels, 58, 244, (1990).

Pictorial Procedure

Step 1: Connect the heaters with channels A and B of PhysWatt.
Step 2: Channel C (fixed voltage) is connected to the fan.
Step 3: Connect PhysWatt with one of the digital channels of Physlogger.
Step 4: Connect PhysTherm with one of the analog channels of PhysLogger and the other side with the Thermocouple.

Step 5: Attach Physlogger to the PC via a USB cable.
Step 6: Start the application, select Physlogger and continue.
Step 7: Go to > Explore.
Step 8: Select the community template Heat Transfer.

Step 9: Adjust the sampling frequency to 2 Hz.
Step 10: If needed, clear the previous data using the “CLEAR” button. Turn the heater ON for 4 to 5 mins. A live plot will show on the Physlogger interface.
Step 11: Turn the heater OFF and allow perforated cylinder to cool naturally. Again turn the heater ON for same time period. After switching OFF the heater, ON the fan. Recorded data will show on the Physlogger interface.
Step 12: Export the data using the save option.

Lab 1 | Tags: heat, thermal physics
Previous

Measuring earth's magnetic field from the detection of a compass needle

Next

Flux and rate of change of flux with a Hall sensor and solenoids

PhysLab

Preparing an institutional and national platform for student-driven experimental research in physics.

CONTACT US

Email: physlab.org@gmail.com Telephone: 111-11-LUMS (5867) Address: Lahore University of Management Sciences (LUMS), Sector U, DHA, Lahore Cantt. 54792, Pakistan
TOP
© 2007-2024 PhysLAB, Lahore University of Management Sciences - All Rights Reserved.
  • Home
  • About Us
    • Overview
    • Centre for Experimental Physics Education (CEPE)
    • Physlab Team
    • Physlab Guidebook
    • Alumni
    • Open Positions
    • Muhammad Sabieh Anwar (Personal)
  • Academics
    • Lab Courses
    • Lab-I (ENGG-100/PHY-100/200)
    • Lab-II (PHY 300/500)
    • AstroLAB
    • Ibn Sahl Corner for Optics
    • Fast Optics
    • Smart Physics
    • Single Photon Quantum Mechanics Lab
    • Chasing Cosmic Ray Muons at Physlab
    • Stories
    • Physics Studio
    • Research Stories
    • Class Activities
    • Courses Taught
    • Class Demonstrations
    • PhysDiary
    • Health and Safety
    • Lab Safety
    • Workplace Organization
  • Research
    • Research Themes
    • Research Internships
    • Research Stories
    • Physics WorldCup
      • International Young Physicists’ Tournament (IYPT) 2019
      • International Young Physicists’ Tournament (IYPT) 2018
      • International Young Physicists’ Tournament (IYPT) 2016
    • Hunerkada
    • Grants
    • Theses and Reports
    • Scientific Publications
    • Invited Talks (Selected)
  • Outreach
    • Media
      • Lectures, Podcasts and Interviews
      • Videobytes
      • YouTube Channel
      • Visitors
      • Testimonials
    • The Scientific Mind Through the Eyes of a Physics Experimenter
    • National Laboratory Immersion Program
      • First Lahore 2012
      • Second Sukkur 2013
      • Third Lahore 2014
      • Fourth Lahore 2016
    • Labview Workshop 2016
    • Open house
      • 2009-2015
      • Open house 2023
    • Khwarizmi Science Society
    • Helping Pakistan’s Universities
      • National University of Technology (NUTECH) 2019
      • Pakistan Institute of Engineering and Applied Sciences
        (PIEAS) 2019 (Final Phase)
      • Pakistan Institute of Engineering and Applied Sciences
        (PIEAS) 2019 (Phase 2)
      • Pakistan Institute of Engineering and Applied Sciences
        (PIEAS) 2018 (Phase 1)
      • National University of Science & Technology 2016
      • Habib University 2014
      • Preston University 2013
      • Ghulam Ishaque Khan Institute of
        Engineering Sciences and Technology 2011
      • Institute of Space Technology 2010
    • The National STEM School
      • STEM School (2018 – 2019)
      • STEM school (2016 – 2017)
    • Abdus Salam Memorial Lecture Series
  • Facilities
    • Laboratories
    • Equipments
    • Devices & Softwares
      • PhysPlot
      • Physlogger
      • Phystrack
    • Mechanical Workshop
    • Inventory
    • 3D Printed Galleria
    • Forms
    • Equipment Howto’s
  • PhysGPT
  • Contact Us