Environmental impact assessment of various energy storage options for buildings

Abstract

The thermochemical sensible (aquifer) and latent TES systems are modeled and analyzed using energy exergy and enviroeconomic analysis methods under various environment temperatures while sustainability and environmental impact assessments are made. The environment (dead state) temperatures considered are 8 9 and 10 °C respectively. Among the TES systems the hot well of the aquifer TES has maximum energy and exergy efficiency values of 94.12 % and 88.78 % at a dead state temperature of 8 °C. Furthermore the most sustainable TES system is found to be the aquifer TES. On the other hand this combined TES system causes maximum 1864.07 kgCO<inf>2</inf>/month emissions at 10 °C environment temperature. So the total CO<inf>2</inf>emission values are directly proportional to the environment temperature. The total enviroeconomic values are also directly proportional to the environment temperatures. For this system a maximum of '.029 CO<inf>2</inf>emission is released per month at 10 °C environment temperature. So these kinds of systems become more enviroeconomic at low environment temperatures. © 2017 Elsevier B.V. All rights reserved.