Proceedings of International Mechanical Engineering Congress & Exposition IMECE 2016 November 11-17, 2016, Phoenix, Arizona, USA IMECE2016-65862 COAXIAL BOREHOLE HEAT EXCHANGER SIMULATION WITH POWER GENERATION POTENTIAL FOR CHACHIMBIRO, ECUADOR Diego Siguenza Centro de Energias Renovables y Alternativas Escuela Superior Politecnica del Litoral Guayaquil, Guayas 090903 Ecuador Email:dieansig@espol.edu.ec Dawei Wu School of Marine Science and Technology Newcastle University Newcastle, Tyne and Wear NE1 7RU United Kingdom Email:dawei.wu@ncl.ac.uk Guillermo Soriano Centro de Energias Renovables y Alternativas Escuela Superior Politecnica del Litoral Guayaquil, Guayas 090903 Ecuador Email:gsorian@espol.edu.ec ABSTRACT This work presents a virtual coaxial Borehole Heat Ex- changer (BHE) energy balance simulation in Chachimbiro, Ecuador. The purpose of this study was to estimate the power generation and optimize the engineering parameters from a vir- tual coaxial BHE of 1500 meters depth on the mentioned site. The methodology used was the modeling simulation based on mass and energy balance through AMEsim software, and the pa- rameters employed in the model considered the previous location surveys besides a sensitivity analysis of geometry, pipe materi- als, and BHE insulation depth. The results showed that a single coaxial BHE on Chachimbiro would have a thermal power po- tential between 3-4 MW, and its efficiency would mainly depend on the thermal conductivity of the pipes plus the insulation cas- ing depth. NOMENCLATURE A Area BHE Borehole Heat Exchanger CAD Computer-aided design C p Heat capacity at constant pressure f Friction factor g Gravity hconv Convective heat transfer coefficient ¯ h Average specific enthalpy ˙ H Enthalpy flow rate l Pipe length ˙ m Mass flow rate masl Meters above sea level MAW P Maximum Allowance Working Pressure MW Mega Watt Nu Nusselt number Pr Prandtl number p Pressure ˙ Q Heat flow rate Re Reynolds number rr Relative roughness T Thickness T Temperature u Specific internal energy v Velocity V Volume α Isobaric thermal expansion coefficient β T Isthermal bulk modulus Δ Differential λ Thermal conductivity μ Fluid dynamic viscosity ρ Density φ Pipe diameter 1 Copyright c  2016 by ASME