Open AccessConstrucción y simulación de un sistema de almacenamiento de energía térmica usando material de cambio de fase
Author(s) -
Guadalupe Sánchez-Vega,
Jorge Pineda-Piñón,
M Nieto-Pérez,
M. Muñoz-Navia
Publication year - 2019
Publication title -
revista de tecnologías en procesos industriales
Language(s) - English
Resource type - Journals
ISSN - 2523-6822
DOI - 10.35429/jtip.2019.9.3.8.15
Subject(s) - phase change material , latent heat , heat exchanger , thermal energy storage , thermodynamics , materials science , thermal , chemistry , physics
A material with phase change has the property of storing or releasing large amounts of energy in the form of latent heat, up to 100 times more than using sensible heat. In this paper we report the results obtained in the construction of a thermal energy storage system using erythritol as phase change material. The prototype uses 31.4 kg of erythritol with a melting point of 188°C and a latent heat of 340 kJ / kg, is heated up to 135°C and stores 17.17 MJ of energy in 9.8 hours with an efficiency of 48.66%. The system stored the energy for 2 days only considering the losses by the natural convection coefficient. To simulate the extraction of energy from the system, a forced convection coefficient of 3000 W/m2 K is considered in the heat exchanger and the system is discharged in 1 day. We can use 10.51 MJ daily in a period of 9.5 hours at a temperature of 135-118°C and the next day load it in a time 6 hours. The prototype was simulated with an accuracy of 91% compared to the real results.