Thermo Syphoning Research Paper

Computational fluid dynamics of jacketed assembly for the improvement of

Thermo-syphoning

Table of Contents

1 Introduction 3

1.1 Fundamentals of Thermo-syphoning.......................................................................3

1.2 Factors affecting Thermo-syphoning 4

1.2.1 Natural Convection 4

1.2.2 Reaction Kinetics 6

1.3 Problem definition 6

1.4 Objectives 7

2 Literature Review 7

3 Methodology............................................................................................................8

4 Results/Progress.......................................................................................................8

References 9

Introduction

Thermo-syphoning, based on natural convection, is passive mode of heat

Second law of thermodynamics, which states that the return of a system is always less than that of initial input, is also valid as energy or heat may be lost while striking against the internals or walls of the assembly.

1.2 Factors affecting Thermo-syphoning

There are several factors which may influence the rate of thermo-syphoning. However, major factors are natural convection, mechanical design of the geometry, involved reaction kinetics and the degree of the heating or cooling

Higher the rate of natural convection will induce larger flows resulting in improved thermo-syphoning.

1.2.1.1 Mechanism of Natural Convection

One of the most familiar heat transfer mechanism based on natural convection is the re-circulation of the water in boilers for steam generation purposes as illustrated in the figure 1-1. The cold water falls down due to gravity from steam drum, which is then heated by the combustion gases of the furnace, and relatively warm mixture of water and steam having lesser density as compared to cold water in the down comers rises up through the risers again towards the steam