1. Assistant Professor, Dept. of Civil Engineering, Faculty of Engineering, Universidad Católica de la Santísima Concepción, Concepción 4090541, Chile (corresponding author).
2. Project Manager and Scientific Instructor in District Heating, Cooling and Combine Heating and Power (CHP), Research and Development, AGFW, Frankfurt am Main 60596, Germany.
3. University Professor, Infrastructural Engineering, HafenCity Univ. Hamburg, Hamburg 20457, Germany.
4. Quality Assurance and Standardization Manager, Enercity Netz GmbH, Auf der Papenburg 18, Hannover 30457, Germany.