JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Overview

Course objective:

• To understand the fundamental laws of Heat transfer modes
• To develop the skills to correlate the Physics with applications

Course Outcomes

Student will be able to use the concepts of Heat Transfer and fluid flow in the

field of energy applications.

UNIT - I

Conduction: Introduction – Modes of heat transfer – Basic Equations - Combined modes – Steady one-dimensional – Steady heat source system – Conduction Shape Factor - Unsteady heat conduction - Lumped heat capacity system - Infinite solid flat plate - cylinder (Heisler charts). Types of fins – Analysis of fins of uniform cross section, effectiveness - Efficiency of fin. Applications.

UNIT - II

Forced Convection: Flow with heat transfer - Flat Plate - Boundary layer - Laminar and Turbulent Flow - Forced convection over a flat plate – External Flow – Internal Flow - Empirical relations. Free convection - Free convection from vertical and horizontal surfaces - Enclosed spaces. Applications to flat plate Collectors.

UNIT - III

Radiation: Overview of Mechanism – laws of radiation- Radiant heat exchange in gray - non-gray bodies – Furnaces – Performance terms and definitions – Furnace heat balance method – Factors affecting furnace performance

UNIT - IV

Boiling Heat Transfer: Regimes of pool boiling – Correlations – Boilers – Performance terms and definitions – Reference standards – Direct Method of Testing – Boiler Efficiency Calculation. Condensation: Types - Film condensation on horizontal and vertical surfaces - Condensers.

UNIT - V

Heat Exchanger: Definition and classification – Heat Exchanger Types by flow design, construction and application - Concept of LMTD and overall heat transfer coefficient - Fouling factor- Derivation of LMTD and effectiveness for parallel and counter flow heat exchangers - NTU approach and design procedure. Purpose of the Performance Test - Performance terms and definitions – Industrial Heat Exchangers - Methodology of heat exchanger performance assessment.

TEXT BOOKS:

• 1. Heat transfer, Cengel and Ghajar, Tata McGraw Hill
• 2. Heat Transfer - A basic approach, Necati Ozisik, Mc Graw Hill

REFERENCE BOOKS:

• 1. Fundamentals of Heat and Mass transfer, Incropera and Dewit, Wiley
• 2. Heat Transfer, Ghoshdastidar, Oxford University Press
• 3. Convective Heat Transfer Analysis, Patrick H.Oosthuizen, David Naylor, Mc Graw Hill
• 4. Engineering heat and mass transfer, Mahesh M Rathore, Laxmi Publications
• 5. Energy Efficiency In Thermal Utilities (Book 2)
• 6. Energy Performance Assessment For Equipment And Utility Systems (Book 4) R19 M.TECH M. TECH. PEES M. TECH. I Year I Sem. (PEES)