Experimental study of heat transfer from the gas-vapor mixture to the surface in rectangular channel with the water vapor condensation

Victor Bespalov ,V I Bespalov ,Denis Melnikov

doi:10.1088/1742-6596/754/4/042002

Abstract

The laboratory setup was developed for studying the water vapor condensation process from the gas mixture on a vertical flat heat exchange surface in rectangular channel 10x2 cm. The experiments were carried out with normal pressure of steam-air mixture. The results allowed to determine the heat transfer coefficient from steam-gas mixture to the heat transfer surface. The dependences of the heat transfer coefficient on the initial moisture content and the mixture flow rate in the heat exchanger channel were obtained.

Highlights

The important task in sphere of energy saving is the flue gas heat recovery for energy and industrial enterprises [1]
A known difficulty is the calculation of the heat transfer coefficient from the flue gases to the heat exchange surface where the water vapor condensation process takes place [2]
The mathematical model of designed condensing plate-type heat exchanger for air heating contains a calculation of the heat transfer coefficient from the flue gases to the air flow, which strongly depends on the heat transfer on the air side as it has lower value

Summary

Introduction

The important task in sphere of energy saving is the flue gas heat recovery for energy and industrial enterprises [1]. A known difficulty is the calculation of the heat transfer coefficient from the flue gases to the heat exchange surface where the water vapor condensation process takes place [2]. The mathematical model of designed condensing plate-type heat exchanger for air heating contains a calculation of the heat transfer coefficient from the flue gases to the air flow, which strongly depends on the heat transfer on the air side as it has lower value.

Results

Conclusion