WSEAS Transactions on Heat and Mass Transfer
Print ISSN: 1790-5044, E-ISSN: 2224-3461Volume 13, 2018
An Investigation of Thermal Energy Storage for Industrial Heat Waste Recovery: Storing Heat Waste into a Ground TES System for a Ship’s Diesel Engine
Authors: , ,
Abstract: Investigating industrial heat waste storage system consists of analysis of the standard thermal energy storage (TES) capacity and the ability to deliver renewable energy into a building’s heating system. This purpose was achieved with the establishment of Vaasa Energy Business and Innovation Center (VEBIC) lab in Finland to promote energy business in the country, one of the features of the lab is to test and research on Wärtsilä’s diesel engine for ships. This engine produces ultra-exhaustion heat which is planned to be stored in a ground TES. This heat waste is injected at the input to test the validity of TES. Five models of TES is developed based on the energy demand of the lab. TES configuration includes 9 boreholes with varying depth of 40, 100, 150, 200, and 250 meters. Input signal is applied at these models to estimate an appropriate size of TES for given building. TES of 250 meters depth is found to be an appropriate size for VEBIC lab. Heat transfer in the ground is calculated by varying volumetric flow rate from 0.05 to 3.0 liter per second of the carrier fluid. Range of 0.05 to 2.0 liter per second is found to be appropriate for the given case. A series configuration of 4 boreholes is shown to satisfy the space heating demand of the given building.
Keywords: Industrial waste recovery, Thermal energy storage, Heat exchange in boreholes, Surface temperature change, Heating demand
Pages: 130-145
WSEAS Transactions on Heat and Mass Transfer, ISSN / E-ISSN: 1790-5044 / 2224-3461, Volume 13, 2018, Art. #13