SlideShare a Scribd company logo

HEAT TRANSFER.pptx

This presentation gives the idea about heat transfer this presentation will provide awareness about heat energy like how the heat transfer from 1 object to other with its principle There are 4 principles of heat transfer: Conduction, Convection, Radiation, Evaporation The heat transfer principles have their own law The examples for all this principles will give better awareness about it.

1 of 17
Download to read offline
HEAT TRANSFER
DR. ANERI PATWARI
MPT-CARDIORESPIRATORY
ASSISTANT PROFESSOR
HEAT TRANSFER.pptx
HEAT TRANSFER.pptx
CONDUCTION
•process by which heat is transferred from the hotter end to the colder end
of an object.
CONDUCTION
•The law of heat conduction, also known as Fourier's law, states that the
rate of heat transfer through a material is proportional to the
negative gradient in the temperature and to the area, at right angles to
that gradient, through which the heat flows
•q= -K ∇T
•where (including the SI units)
•Q is the local heat flux density, W/m2,
•K is the material's conductivity, W/(m·K),
•∇T is the temperature gradient, K/m.
CONDUCTION
EXAMPLES
•Ironing of clothes is an example of conduction where the heat is
conducted from the iron to the clothes.
•Heat is transferred from hands to ice cube resulting in the melting
of an ice cube when held in hands.
•Heat conduction through the sand at the beaches. This can be
experienced during summers. Sand is a good conductor of heat.

Recommended

HYDROCOLLATOR PACK by Dr. Aneri.pptx
HYDROCOLLATOR PACK by Dr. Aneri.pptxHYDROCOLLATOR PACK by Dr. Aneri.pptx
HYDROCOLLATOR PACK by Dr. Aneri.pptxAneriPatwari
 
PARAFFIN WAX BATH THERAPY by Dr. Aneri..
PARAFFIN WAX BATH THERAPY by Dr. Aneri..PARAFFIN WAX BATH THERAPY by Dr. Aneri..
PARAFFIN WAX BATH THERAPY by Dr. Aneri..AneriPatwari
 
Modes of heat transfer conduction convection radiation complete
Modes of heat transfer conduction  convection  radiation completeModes of heat transfer conduction  convection  radiation complete
Modes of heat transfer conduction convection radiation completeSatyendraAhirwar1
 
PARAFFIN WAX BATH THERAPY.pptx
PARAFFIN WAX BATH THERAPY.pptxPARAFFIN WAX BATH THERAPY.pptx
PARAFFIN WAX BATH THERAPY.pptxVaishnaviElumalai
 
What Is Hot & Cold Therapy & How To Apply?
What Is Hot & Cold Therapy & How To Apply?What Is Hot & Cold Therapy & How To Apply?
What Is Hot & Cold Therapy & How To Apply?David Anderson
 

More Related Content

What's hot

HEAT TRANSFER : Introduction
HEAT TRANSFER : Introduction HEAT TRANSFER : Introduction
HEAT TRANSFER : Introduction PRAMOD MAURYA
 
Application of refrigeration and air conditioning PWI
Application of refrigeration and air conditioning PWIApplication of refrigeration and air conditioning PWI
Application of refrigeration and air conditioning PWIPurushottam Ingle
 
Short wave Diathermy
Short wave Diathermy Short wave Diathermy
Short wave Diathermy mostafaali197
 
Whirpool bath
Whirpool bath Whirpool bath
Whirpool bath Iram Anwar
 
Chap09 ht 3e natural convection
Chap09 ht 3e natural convectionChap09 ht 3e natural convection
Chap09 ht 3e natural convectionBening Kambuna
 
HYDRO COLLATOR UNIT.pptx
HYDRO COLLATOR  UNIT.pptxHYDRO COLLATOR  UNIT.pptx
HYDRO COLLATOR UNIT.pptxSanchalShah1
 
hot and cold application.pptx
hot and cold application.pptxhot and cold application.pptx
hot and cold application.pptxMohammedAbdela7
 
Physics Thermodynamics Notes Grade 11
Physics Thermodynamics Notes Grade 11Physics Thermodynamics Notes Grade 11
Physics Thermodynamics Notes Grade 11Learn Infinite
 
Wax Therapy - Techniques, Indiactions and Contraindications - Dr Rohit Bhaskar
Wax Therapy - Techniques, Indiactions and Contraindications - Dr Rohit BhaskarWax Therapy - Techniques, Indiactions and Contraindications - Dr Rohit Bhaskar
Wax Therapy - Techniques, Indiactions and Contraindications - Dr Rohit BhaskarDr Rohit Bhaskar, Physio
 
Hydrocollator_SRS.pptx
Hydrocollator_SRS.pptxHydrocollator_SRS.pptx
Hydrocollator_SRS.pptxSreeraj S R
 
Presentation on evaporators
Presentation on evaporatorsPresentation on evaporators
Presentation on evaporatorsAnshumaan Tiwari
 
Thermal Conductivity.pptx
Thermal Conductivity.pptxThermal Conductivity.pptx
Thermal Conductivity.pptxAhsanMuhammad22
 
Contrast Bath Therapy - Physiotherapy - Dr Rohit Bhaskar
Contrast Bath Therapy - Physiotherapy - Dr Rohit BhaskarContrast Bath Therapy - Physiotherapy - Dr Rohit Bhaskar
Contrast Bath Therapy - Physiotherapy - Dr Rohit BhaskarDr Rohit Bhaskar, Physio
 
Hot and cold application
Hot and cold applicationHot and cold application
Hot and cold applicationJyoti Gaver
 

What's hot (20)

Hot application
Hot applicationHot application
Hot application
 
Short wave diathermy
Short wave diathermyShort wave diathermy
Short wave diathermy
 
HEAT TRANSFER : Introduction
HEAT TRANSFER : Introduction HEAT TRANSFER : Introduction
HEAT TRANSFER : Introduction
 
Application of refrigeration and air conditioning PWI
Application of refrigeration and air conditioning PWIApplication of refrigeration and air conditioning PWI
Application of refrigeration and air conditioning PWI
 
Heat emergencies
Heat emergenciesHeat emergencies
Heat emergencies
 
Short wave Diathermy
Short wave Diathermy Short wave Diathermy
Short wave Diathermy
 
Whirpool bath
Whirpool bath Whirpool bath
Whirpool bath
 
Chap09 ht 3e natural convection
Chap09 ht 3e natural convectionChap09 ht 3e natural convection
Chap09 ht 3e natural convection
 
cryotherapy
cryotherapycryotherapy
cryotherapy
 
HYDRO COLLATOR UNIT.pptx
HYDRO COLLATOR  UNIT.pptxHYDRO COLLATOR  UNIT.pptx
HYDRO COLLATOR UNIT.pptx
 
hot and cold application.pptx
hot and cold application.pptxhot and cold application.pptx
hot and cold application.pptx
 
Physics Thermodynamics Notes Grade 11
Physics Thermodynamics Notes Grade 11Physics Thermodynamics Notes Grade 11
Physics Thermodynamics Notes Grade 11
 
Wax Therapy - Techniques, Indiactions and Contraindications - Dr Rohit Bhaskar
Wax Therapy - Techniques, Indiactions and Contraindications - Dr Rohit BhaskarWax Therapy - Techniques, Indiactions and Contraindications - Dr Rohit Bhaskar
Wax Therapy - Techniques, Indiactions and Contraindications - Dr Rohit Bhaskar
 
Pwb
PwbPwb
Pwb
 
Hydrocollator_SRS.pptx
Hydrocollator_SRS.pptxHydrocollator_SRS.pptx
Hydrocollator_SRS.pptx
 
Presentation on evaporators
Presentation on evaporatorsPresentation on evaporators
Presentation on evaporators
 
DR. Rashi Hot Packs
DR. Rashi Hot PacksDR. Rashi Hot Packs
DR. Rashi Hot Packs
 
Thermal Conductivity.pptx
Thermal Conductivity.pptxThermal Conductivity.pptx
Thermal Conductivity.pptx
 
Contrast Bath Therapy - Physiotherapy - Dr Rohit Bhaskar
Contrast Bath Therapy - Physiotherapy - Dr Rohit BhaskarContrast Bath Therapy - Physiotherapy - Dr Rohit Bhaskar
Contrast Bath Therapy - Physiotherapy - Dr Rohit Bhaskar
 
Hot and cold application
Hot and cold applicationHot and cold application
Hot and cold application
 

Similar to HEAT TRANSFER.pptx

Modes of heat transfer ( ARIANA ANWAR 7 F).pptx
Modes of heat transfer ( ARIANA ANWAR 7 F).pptxModes of heat transfer ( ARIANA ANWAR 7 F).pptx
Modes of heat transfer ( ARIANA ANWAR 7 F).pptxarianaanwar
 
Modes of heat transfer ( ARIANA ANWAR 7 F).pptx
Modes of heat transfer ( ARIANA ANWAR 7 F).pptxModes of heat transfer ( ARIANA ANWAR 7 F).pptx
Modes of heat transfer ( ARIANA ANWAR 7 F).pptxarianaanwar
 
Heat Transfer Operations.pptx
Heat Transfer Operations.pptxHeat Transfer Operations.pptx
Heat Transfer Operations.pptxHaseen Gul
 
Introduction to heat transfer
Introduction to heat transferIntroduction to heat transfer
Introduction to heat transferAamir Shaikh
 
Pharmaceutical engineering: Heat transfer
Pharmaceutical engineering: Heat transferPharmaceutical engineering: Heat transfer
Pharmaceutical engineering: Heat transferParag Jain
 
HEAT TRANSFER.pptx
HEAT TRANSFER.pptxHEAT TRANSFER.pptx
HEAT TRANSFER.pptxDummy95
 
Presentation on Heat Transfer.
Presentation on Heat Transfer.Presentation on Heat Transfer.
Presentation on Heat Transfer.pratikgorde
 
Basics of heat transfer 17
Basics of heat transfer 17Basics of heat transfer 17
Basics of heat transfer 17Mehtab Rai
 
Heat Transfer Basic Laws and their applications in simple language .pdf
Heat Transfer Basic Laws and their applications in simple language .pdfHeat Transfer Basic Laws and their applications in simple language .pdf
Heat Transfer Basic Laws and their applications in simple language .pdfPratikShaileshGaikwa
 

Similar to HEAT TRANSFER.pptx (20)

Heat Transfer
Heat TransferHeat Transfer
Heat Transfer
 
Modes of heat transfer ( ARIANA ANWAR 7 F).pptx
Modes of heat transfer ( ARIANA ANWAR 7 F).pptxModes of heat transfer ( ARIANA ANWAR 7 F).pptx
Modes of heat transfer ( ARIANA ANWAR 7 F).pptx
 
Modes of heat transfer ( ARIANA ANWAR 7 F).pptx
Modes of heat transfer ( ARIANA ANWAR 7 F).pptxModes of heat transfer ( ARIANA ANWAR 7 F).pptx
Modes of heat transfer ( ARIANA ANWAR 7 F).pptx
 
HEAT TRANSFER Complete.pptx
HEAT TRANSFER Complete.pptxHEAT TRANSFER Complete.pptx
HEAT TRANSFER Complete.pptx
 
Heat Transfer Operations.pptx
Heat Transfer Operations.pptxHeat Transfer Operations.pptx
Heat Transfer Operations.pptx
 
Introduction to heat transfer
Introduction to heat transferIntroduction to heat transfer
Introduction to heat transfer
 
Pharmaceutical engineering: Heat transfer
Pharmaceutical engineering: Heat transferPharmaceutical engineering: Heat transfer
Pharmaceutical engineering: Heat transfer
 
HEAT TRANSFER.pptx
HEAT TRANSFER.pptxHEAT TRANSFER.pptx
HEAT TRANSFER.pptx
 
Heat transfer
Heat transferHeat transfer
Heat transfer
 
Hmtm ppt
Hmtm pptHmtm ppt
Hmtm ppt
 
HMT-Conduction1.pptx
HMT-Conduction1.pptxHMT-Conduction1.pptx
HMT-Conduction1.pptx
 
PHT 080322.pptx
PHT 080322.pptxPHT 080322.pptx
PHT 080322.pptx
 
HEAT TRANSFER
HEAT TRANSFERHEAT TRANSFER
HEAT TRANSFER
 
Presentation on Heat Transfer.
Presentation on Heat Transfer.Presentation on Heat Transfer.
Presentation on Heat Transfer.
 
HMT.pdf
HMT.pdfHMT.pdf
HMT.pdf
 
Conduction ppt
Conduction pptConduction ppt
Conduction ppt
 
Introduction and Basic Modes of Heat Transfer
Introduction and Basic Modes of Heat TransferIntroduction and Basic Modes of Heat Transfer
Introduction and Basic Modes of Heat Transfer
 
Basics of heat transfer 17
Basics of heat transfer 17Basics of heat transfer 17
Basics of heat transfer 17
 
Heat Transfer Basic Laws and their applications in simple language .pdf
Heat Transfer Basic Laws and their applications in simple language .pdfHeat Transfer Basic Laws and their applications in simple language .pdf
Heat Transfer Basic Laws and their applications in simple language .pdf
 
Heat_All.pdf
Heat_All.pdfHeat_All.pdf
Heat_All.pdf
 

Recently uploaded

Cell locomotion (Ameboid/ciliary/flagellar movement)
Cell locomotion (Ameboid/ciliary/flagellar movement)Cell locomotion (Ameboid/ciliary/flagellar movement)
Cell locomotion (Ameboid/ciliary/flagellar movement)MedicoseAcademics
 
Bedside Utility of Liaoning Score a Non-Invasive As Predictor of Esophageal V...
Bedside Utility of Liaoning Score a Non-Invasive As Predictor of Esophageal V...Bedside Utility of Liaoning Score a Non-Invasive As Predictor of Esophageal V...
Bedside Utility of Liaoning Score a Non-Invasive As Predictor of Esophageal V...semualkaira
 
Circulatory shock Cardiogenic Shock Hypovolemic Shock Sepsis, Septic Shock an...
Circulatory shock Cardiogenic Shock Hypovolemic Shock Sepsis, Septic Shock an...Circulatory shock Cardiogenic Shock Hypovolemic Shock Sepsis, Septic Shock an...
Circulatory shock Cardiogenic Shock Hypovolemic Shock Sepsis, Septic Shock an...Abhinav S
 
Seminario biología molecular Kevin Duque
Seminario biología molecular Kevin DuqueSeminario biología molecular Kevin Duque
Seminario biología molecular Kevin Duquekevinestebanduque
 
Tolerance Hydra10P Avene trainings blink
Tolerance Hydra10P Avene trainings blinkTolerance Hydra10P Avene trainings blink
Tolerance Hydra10P Avene trainings blinkClinicians
 
Scanning electron microscope - SEM , Its applicability in rasashastra
Scanning electron microscope - SEM , Its applicability in rasashastraScanning electron microscope - SEM , Its applicability in rasashastra
Scanning electron microscope - SEM , Its applicability in rasashastraDr. Madduru Muni Haritha
 
Artificial Radionuclide Generators in Medicine Applications in Radiotherapy.pptx
Artificial Radionuclide Generators in Medicine Applications in Radiotherapy.pptxArtificial Radionuclide Generators in Medicine Applications in Radiotherapy.pptx
Artificial Radionuclide Generators in Medicine Applications in Radiotherapy.pptxDr. Dheeraj Kumar
 
Autism and Savant Syndrome|Study|The Good doctor .pptx
Autism and Savant Syndrome|Study|The Good doctor .pptxAutism and Savant Syndrome|Study|The Good doctor .pptx
Autism and Savant Syndrome|Study|The Good doctor .pptxScripted Symptoms
 
Biochemistry of Carbohydrates for MBBS, BDS, Lab Med 2024.pptx
Biochemistry of Carbohydrates for MBBS, BDS, Lab Med 2024.pptxBiochemistry of Carbohydrates for MBBS, BDS, Lab Med 2024.pptx
Biochemistry of Carbohydrates for MBBS, BDS, Lab Med 2024.pptxRajendra Dev Bhatt
 
Seminario biologia molecular-Universidad Pontificia Bolivariana.
Seminario biologia molecular-Universidad Pontificia Bolivariana.Seminario biologia molecular-Universidad Pontificia Bolivariana.
Seminario biologia molecular-Universidad Pontificia Bolivariana.JULIANA BENAVIDES GUERRERO
 
How to be a successful physician intrapreneur
How to be a successful physician intrapreneurHow to be a successful physician intrapreneur
How to be a successful physician intrapreneurArlen Meyers, MD, MBA
 
USG,CT AND MR IMAGING OF HEPATIC MASS LESIONS.
USG,CT AND MR IMAGING OF HEPATIC MASS LESIONS.USG,CT AND MR IMAGING OF HEPATIC MASS LESIONS.
USG,CT AND MR IMAGING OF HEPATIC MASS LESIONS.vrchk912
 
GLANDS IN THE SKIN,FUNCTIONS AND ABNORMALITIES ..pptx
GLANDS IN THE SKIN,FUNCTIONS AND ABNORMALITIES ..pptxGLANDS IN THE SKIN,FUNCTIONS AND ABNORMALITIES ..pptx
GLANDS IN THE SKIN,FUNCTIONS AND ABNORMALITIES ..pptxWINCY THIRUMURUGAN
 
pediatrics. epilepsy and seizures in children 8.ppt
pediatrics. epilepsy and seizures in children 8.pptpediatrics. epilepsy and seizures in children 8.ppt
pediatrics. epilepsy and seizures in children 8.pptArun170190
 
SCIENTIFIC APPROACH OF DIET IN MASANUMASIKA GARBINI PARICHARYA – FOR A HEALTH...
SCIENTIFIC APPROACH OF DIET IN MASANUMASIKA GARBINI PARICHARYA – FOR A HEALTH...SCIENTIFIC APPROACH OF DIET IN MASANUMASIKA GARBINI PARICHARYA – FOR A HEALTH...
SCIENTIFIC APPROACH OF DIET IN MASANUMASIKA GARBINI PARICHARYA – FOR A HEALTH...Dr. Madduru Muni Haritha
 
ABDULRAHMAN AL RAFIQ UPDATED MANAGEMENT OF ACUTE PULMONARY EMBOLISM .pdf
ABDULRAHMAN AL RAFIQ UPDATED MANAGEMENT OF ACUTE PULMONARY EMBOLISM .pdfABDULRAHMAN AL RAFIQ UPDATED MANAGEMENT OF ACUTE PULMONARY EMBOLISM .pdf
ABDULRAHMAN AL RAFIQ UPDATED MANAGEMENT OF ACUTE PULMONARY EMBOLISM .pdfAbdurahmanRafeeq
 
Health powerpoint for catch -up fridays.
Health powerpoint for catch -up fridays.Health powerpoint for catch -up fridays.
Health powerpoint for catch -up fridays.JohnMarckySeoTeriomp
 
ANTI-HYPERTENSIVE DRUG - RAUWOLFIA ROOT.
ANTI-HYPERTENSIVE DRUG - RAUWOLFIA ROOT.ANTI-HYPERTENSIVE DRUG - RAUWOLFIA ROOT.
ANTI-HYPERTENSIVE DRUG - RAUWOLFIA ROOT.Divya Kanojiya
 
KOSHTA CONCEPT IN AYURVEDA BY VIJAY R K
KOSHTA CONCEPT IN AYURVEDA  BY  VIJAY R KKOSHTA CONCEPT IN AYURVEDA  BY  VIJAY R K
KOSHTA CONCEPT IN AYURVEDA BY VIJAY R Kvinaykumarrkumabar
 

Recently uploaded (20)

Cell locomotion (Ameboid/ciliary/flagellar movement)
Cell locomotion (Ameboid/ciliary/flagellar movement)Cell locomotion (Ameboid/ciliary/flagellar movement)
Cell locomotion (Ameboid/ciliary/flagellar movement)
 
Bedside Utility of Liaoning Score a Non-Invasive As Predictor of Esophageal V...
Bedside Utility of Liaoning Score a Non-Invasive As Predictor of Esophageal V...Bedside Utility of Liaoning Score a Non-Invasive As Predictor of Esophageal V...
Bedside Utility of Liaoning Score a Non-Invasive As Predictor of Esophageal V...
 
Circulatory shock Cardiogenic Shock Hypovolemic Shock Sepsis, Septic Shock an...
Circulatory shock Cardiogenic Shock Hypovolemic Shock Sepsis, Septic Shock an...Circulatory shock Cardiogenic Shock Hypovolemic Shock Sepsis, Septic Shock an...
Circulatory shock Cardiogenic Shock Hypovolemic Shock Sepsis, Septic Shock an...
 
Seminario biología molecular Kevin Duque
Seminario biología molecular Kevin DuqueSeminario biología molecular Kevin Duque
Seminario biología molecular Kevin Duque
 
Introduction Endocrinology class -2.pptx
Introduction Endocrinology class -2.pptxIntroduction Endocrinology class -2.pptx
Introduction Endocrinology class -2.pptx
 
Tolerance Hydra10P Avene trainings blink
Tolerance Hydra10P Avene trainings blinkTolerance Hydra10P Avene trainings blink
Tolerance Hydra10P Avene trainings blink
 
Scanning electron microscope - SEM , Its applicability in rasashastra
Scanning electron microscope - SEM , Its applicability in rasashastraScanning electron microscope - SEM , Its applicability in rasashastra
Scanning electron microscope - SEM , Its applicability in rasashastra
 
Artificial Radionuclide Generators in Medicine Applications in Radiotherapy.pptx
Artificial Radionuclide Generators in Medicine Applications in Radiotherapy.pptxArtificial Radionuclide Generators in Medicine Applications in Radiotherapy.pptx
Artificial Radionuclide Generators in Medicine Applications in Radiotherapy.pptx
 
Autism and Savant Syndrome|Study|The Good doctor .pptx
Autism and Savant Syndrome|Study|The Good doctor .pptxAutism and Savant Syndrome|Study|The Good doctor .pptx
Autism and Savant Syndrome|Study|The Good doctor .pptx
 
Biochemistry of Carbohydrates for MBBS, BDS, Lab Med 2024.pptx
Biochemistry of Carbohydrates for MBBS, BDS, Lab Med 2024.pptxBiochemistry of Carbohydrates for MBBS, BDS, Lab Med 2024.pptx
Biochemistry of Carbohydrates for MBBS, BDS, Lab Med 2024.pptx
 
Seminario biologia molecular-Universidad Pontificia Bolivariana.
Seminario biologia molecular-Universidad Pontificia Bolivariana.Seminario biologia molecular-Universidad Pontificia Bolivariana.
Seminario biologia molecular-Universidad Pontificia Bolivariana.
 
How to be a successful physician intrapreneur
How to be a successful physician intrapreneurHow to be a successful physician intrapreneur
How to be a successful physician intrapreneur
 
USG,CT AND MR IMAGING OF HEPATIC MASS LESIONS.
USG,CT AND MR IMAGING OF HEPATIC MASS LESIONS.USG,CT AND MR IMAGING OF HEPATIC MASS LESIONS.
USG,CT AND MR IMAGING OF HEPATIC MASS LESIONS.
 
GLANDS IN THE SKIN,FUNCTIONS AND ABNORMALITIES ..pptx
GLANDS IN THE SKIN,FUNCTIONS AND ABNORMALITIES ..pptxGLANDS IN THE SKIN,FUNCTIONS AND ABNORMALITIES ..pptx
GLANDS IN THE SKIN,FUNCTIONS AND ABNORMALITIES ..pptx
 
pediatrics. epilepsy and seizures in children 8.ppt
pediatrics. epilepsy and seizures in children 8.pptpediatrics. epilepsy and seizures in children 8.ppt
pediatrics. epilepsy and seizures in children 8.ppt
 
SCIENTIFIC APPROACH OF DIET IN MASANUMASIKA GARBINI PARICHARYA – FOR A HEALTH...
SCIENTIFIC APPROACH OF DIET IN MASANUMASIKA GARBINI PARICHARYA – FOR A HEALTH...SCIENTIFIC APPROACH OF DIET IN MASANUMASIKA GARBINI PARICHARYA – FOR A HEALTH...
SCIENTIFIC APPROACH OF DIET IN MASANUMASIKA GARBINI PARICHARYA – FOR A HEALTH...
 
ABDULRAHMAN AL RAFIQ UPDATED MANAGEMENT OF ACUTE PULMONARY EMBOLISM .pdf
ABDULRAHMAN AL RAFIQ UPDATED MANAGEMENT OF ACUTE PULMONARY EMBOLISM .pdfABDULRAHMAN AL RAFIQ UPDATED MANAGEMENT OF ACUTE PULMONARY EMBOLISM .pdf
ABDULRAHMAN AL RAFIQ UPDATED MANAGEMENT OF ACUTE PULMONARY EMBOLISM .pdf
 
Health powerpoint for catch -up fridays.
Health powerpoint for catch -up fridays.Health powerpoint for catch -up fridays.
Health powerpoint for catch -up fridays.
 
ANTI-HYPERTENSIVE DRUG - RAUWOLFIA ROOT.
ANTI-HYPERTENSIVE DRUG - RAUWOLFIA ROOT.ANTI-HYPERTENSIVE DRUG - RAUWOLFIA ROOT.
ANTI-HYPERTENSIVE DRUG - RAUWOLFIA ROOT.
 
KOSHTA CONCEPT IN AYURVEDA BY VIJAY R K
KOSHTA CONCEPT IN AYURVEDA  BY  VIJAY R KKOSHTA CONCEPT IN AYURVEDA  BY  VIJAY R K
KOSHTA CONCEPT IN AYURVEDA BY VIJAY R K
 

HEAT TRANSFER.pptx

  • 1. HEAT TRANSFER DR. ANERI PATWARI MPT-CARDIORESPIRATORY ASSISTANT PROFESSOR
  • 4. CONDUCTION •process by which heat is transferred from the hotter end to the colder end of an object.
  • 5. CONDUCTION •The law of heat conduction, also known as Fourier's law, states that the rate of heat transfer through a material is proportional to the negative gradient in the temperature and to the area, at right angles to that gradient, through which the heat flows •q= -K ∇T •where (including the SI units) •Q is the local heat flux density, W/m2, •K is the material's conductivity, W/(m·K), •∇T is the temperature gradient, K/m.
  • 6. CONDUCTION EXAMPLES •Ironing of clothes is an example of conduction where the heat is conducted from the iron to the clothes. •Heat is transferred from hands to ice cube resulting in the melting of an ice cube when held in hands. •Heat conduction through the sand at the beaches. This can be experienced during summers. Sand is a good conductor of heat.
  • 7. CONVECTION •Transfer of heat from one place to another due to the movement of fluid. Although often discussed as a distinct method of heat transfer, convective heat transfer involves the combined processes of conduction (heat diffusion) and advection (heat transfer by bulk fluid flow). Convection is usually the dominant form of heat transfer in liquids and gases
  • 8. CONVECTION •The basic relationship for heat transfer by convection is: •Q˙=ℎA(T− Tf) •Where Q˙ is the heat transferred per unit time, • A is the area of the object, • h is the heat transfer coefficient, • T is the object's surface temperature, and • Tf is the fluid temperature
  • 10. CONVECTION EXAMPLES •Boiling of water, that is molecules that are denser move at the bottom while the molecules which are less dense move upwards resulting in the circular motion of the molecules so that water gets heated. •Warm water around the equator moves towards the poles while cooler water at the poles moves towards the equator. •Blood circulation in warm-blooded animals takes place with the help of convection, thereby regulating the body temperature.
  • 11. RADIATION Radiant heat is present in some or other form in our daily lives. Thermal radiations are referred to as radiant heat. Thermal radiation is generated by the emission of electromagnetic waves These waves carry away the energy from the emitting body. Radiation takes place through a vacuum or transparent medium which can be either solid or liquid. Thermal radiation is the result of the random motion of molecules in matter. Radiation heat transfer is measured by a device known as thermocouple. A thermocouple is used for measuring the temperature.
  • 12. RADIATION •Thermal radiation can be calculated by • Stefan-Boltzmann law: • P = e ∙ σ ∙ A· (Tr – Tc)4 •P is the net power of radiation •A is the area of radiation •Tr is the radiator temperature •Tc is the surrounding temperature •e is emissivity and σ is Stefan’s constant (σ = 5.67 × 10-8Wm-2K-4
  • 13. RADIATION •EXAMPLES •Microwave radiation emitted in the oven is an example of radiation. •UV rays coming from the sun is an example of radiation. •The release of alpha particles during the decaying of Uranium-238 into Thorium-234 is an example of radiation.