Delgado Diaz William Orlando HSLU T&A

William Orlando Delgado Diaz William Orlando Delgado Diaz

Senior Research Associate

Delgado Diaz William Orlando HSLU T&A

Lucerne School of Engineering and Architecture

Room E300/E311
Technikumstrasse 21
6048 Horw


Institute of Mechanical Engineering and Energy Technology IME

CC Thermal Energy Storage

Senior Research Associate

+41 41 349 35 14

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Projects

Research projects

  • WinTES - Winterelectricity demand and seasonal thermal energy storage
  • Smart Decentralized DHW
  • HyTES: Optimierung hybrider saisonaler Wärmespeichersysteme mithilfe von Phasenwechselmaterialien
  • Development of high performance phase change material for transportation
  • STOREF
  • Decentralised DHW

Publications and presentations

Publications and presentations - Article, review; peer reviewed

  • Delgado Diaz, William Orlando & Vogel, Benedikt (2026). Wärmespeicher puffert Solarstrom über Wochen. Schweizer Energiefachbuch 2026,
  • Estermann, Patrick; Gürber, Pascal; Krimmel, Stefan; Delgado Diaz, William Orlando; Ravotti, Rebecca; Häusler, Manuel & Stamatiou, Anastasia (12.08.2025). Experimental Characterization of a Direct Contact Latent Cold Storage with Ice. MDPI/energies,
  • Delgado Diaz, William Orlando; Villasmil, Willy; Troxler, Marcel; Hijwegen, Ruben; Hendry, Reto; Schilt, Ueli; Roos, Philipp; Ravotti, Rebecca; Stamatiou, Anastasia; Haussener, Sophia & Worlitschek, Jörg (24.07.2025). Optimization of hybrid sensible-latent seasonal heat storage systems. Applied Energy, 399/2025(12623), 1-24.
  • Martinez Garcia, Jorge; Fenk, Benjamin; Gwerder, Damian; Schiffmann, David; Delgado Diaz, William Orlando; Stamatiou, Anastasia; Fischer, Ludger Josef & Schütz, Philipp (2023). Flow Field Simulation and Measurement in Packed Beds Based on 4D-X-Ray Computed Tomography. Chemie Ingenieur Technik, 95(5), 1-6. doi: https://doi.org/10.1002/cite.202200187
  • Landini, Stefano; Delgado Diaz, William Orlando; Ravotti, Rebecca; Waser, Remo; Stamatiou, Anastasia; Worlitschek, Jörg & O, Tadhg (2021). Effect of geometry and thermal mass of Direct-Metal-Laser-Sintered aluminium Heat Exchangers filled with phase change materials on Lithium-Ion cells’ passive cooling. Applied Thermal Engineering, 195, 1-9. doi: 10.1016/j.applthermaleng.2021.117151
  • Delgado Diaz, William Orlando; Stamatiou, Anastasia; Maranda, Simon; Waser, Remo & Worlitschek, Jörg (2020). Comparison of Heat Transfer Enhancement Techniques in Latent Heat Storage. Applied Sciences - Special Issue "Advanced Phase Change Materials for Thermal Storage", 10(16)(5519), 1-22. doi: 10.3390/app10165519

Publications and presentations - Article, review; not peer reviewed

  • Sponagle, Benjamin; Maranda, Simon; Delgado Diaz, William Orlando; Waser, Remo; Groulx, Dominic & Worlitschek, Jörg (21.2.2025). Experimental Validation of a Novel Modelling Technique for Packed Bed Thermal Storage Systems Containing Non-Spherical Phase Change Material Capsules. International Journal of Heat and Mass Transfer,

Publications and presentations - Presentation (conference/report/lectures)

  • Avila-Marin, Antonio; Delgado Diaz, William Orlando; Hochuli, Adina; Lange, Dimitrina; Palacios, Anabel; Royo Gutiérrez, Patricia & Ure, Zafer (03.11.2025). Hybrid Sensible-Latent Heat Thermal Energy Storage for Concentrated Solar Power Applications. Solar World Congress 2025, Fortaleza, Brazil.
  • Hochuli, Adina; Palacios, Anabel; Delgado Diaz, William Orlando; Royo Gutiérrez, Patricia; Lange, Dimitrina & Ure, Zafer (14.09.2025). Hybrid Sensible-Latent Heat Thermal Energy Storage for Concentrated Solar Power Applications. 18th European Congress and Exhibition on Advanced Materials and Processes, Granada, Spain.
  • Delgado Diaz, William Orlando; Haussener, Sophia; Hendry, Reto; Ravotti, Rebecca; Roos, Philipp; Stamatiou, Anastasia; Troxler, Marcel; Villasmil, Willy & Worlitschek, Jörg (11.09.2024). Hybrid seasonal heat storage systems using Phase Change Materials: Economic and Environmental Optimization. 10th International Conference on Smart Energy Systems, Aalborg Universitet.
  • Delgado Diaz, William Orlando; Haussener, Sophia; Philipp, Schütz; Stamatiou, Anastasia & Worlitschek, Jörg (09.08.2022). VALIDATED CFD SIMULATION OF RANDOM PACKED BED STRUCTURES FOR CHARACTERIZATION OF THEIR HYDRODYNAMIC PERFORMANCE. 16th INTERNATIONAL CONFERENCE ON HEAT TRANSFER, FLUID MECHANICS AND THERMODYNAMICS (HEFAT), South Africa (Online.
  • Martinez Garcia, Jorge; Fenk, Benjamin; Gwerder, Damian; Schiffmann, David; Delgado Diaz, William Orlando; Stamatiou, Anastasia; Fischer, Ludger Josef & Schütz, Philipp (19.07.2022). Flow field simulation and measurement in packed beds based on 4D-X-ray Computed Tomography. Annual Meeting on Reaction Engineering and ProcessNet Subject Division Heat and Mass Transfer 2022, Würzburg, Germany.
  • Guarda, Dario; Calati, Michele; Delgado Diaz, William Orlando; Landini, Stefano; Waser, Remo; Stamatiou, Anastasia; O'Donovan, Tadhg & Mancin, Simone (01.09.2021). Numerical study of PCM based TMS for Li-ion cells. 13th IIR Conference on Phase Change Materials and Slurries for Refrigeration and Air Conditioning, Vincenza, Italy.