Validation of Vapour / Water Production in a Thermoelectric Distillation System

Abstract

-In this study, mathematical calculations developed through water-vapour phase-change theory is used to interpret the processes involved in the fresh water production of a thermoelectric distillation system. The rate of water production depends on various parameters of vaporization phenomena such as water and vapour temperatures, pressure, specific volume, heat capacity and water-vapour surface area. The water-vapour surface area is constant 10 x 10 cm 2 , the initial depth of the sample water is 3 cm and the air occupies the 500 cm 3 volume inside the chamber. The volume and the mass of vapour and water at water-vapour interface are calculated through one hour of the system operation. The temperatures of the system components, humidity and water production of the thermoelectric distillation system are measured. As a result, an increase in the temperature of water and hot side of the thermoelectric module leads to an increase in the water production by increasing the vapour formation at atmospheric pressure. After one hour of system operation, the water production reaches 34.5 mL and the humidity inside the chamber increases from 51 % to 74 %. The results also show the distillation ratio is 11.5%. The mathematical calculations validate the experimental data with reasonable agreement.

Effective Thermal Analysis of Using Peltier Module for Desalination Process

“…In the thermal distillation systems, control the evaporation and condensation rates lead to enhance the water production by increasing the water and vapour temperatures and decrease the condenser temperature. However, these processes consume energy and needs to enhance its performance [11][12][13][14][15].…”