Hongtao Qiao
- Phone: 617-621-7586
- Email:
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Position:
Research / Technical Staff
Senior Principal Research Scientist -
Education:
Ph.D., University of Maryland, 2014 -
Research Areas:
External Links:
Hongtao's Quick Links
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Biography
Prior to his PhD, Hongtao worked at Carrier Corporation developing advanced steady-state computer simulations for HVAC systems. During his PhD, he developed a comprehensive transient modeling framework for thermo-fluid systems to explore complex dynamic characteristics of vapor compression cycles. Currently, Hongtao works on the control-oriented multi-physical system modeling.
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Internships with Hongtao
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MS2095: Data-driven Modeling and Control of Thermo-fluid Systems
MERL is seeking a highly motivated and qualified individual to conduct research in dynamic modeling and simulation of vapor compression systems in the summer of 2024. Knowledge of data-driven modeling techniques is required. Experience with sampling-based control methods is preferred. Experience in working with thermo-fluid systems is a plus. The intern is expected to collaborate with MERL researchers to build models, develop algorithms, and prepare manuscripts for scientific publications. Senior Ph.D. students in applied mathematics, chemical/mechanical engineering and other related areas are encouraged to apply. The expected duration of the internship is 3 months, and the start date is flexible.
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MERL Publications
- , "Theoretical analysis of cycling losses in air source heat pump systems", International Congress of Refrigeration (ICR), September 2023.BibTeX TR2023-127 PDF
- @inproceedings{Qiao2023sep,
- author = {Qiao, Hongtao and Laughman, Christopher R.},
- title = {Theoretical analysis of cycling losses in air source heat pump systems},
- booktitle = {International Congress of Refrigeration (ICR)},
- year = 2023,
- month = sep,
- url = {https://www.merl.com/publications/TR2023-127}
- }
- , "Digital Twins for Vapor Compression Cycles: Challenges & Opportunities", International Congress of Refrigeration (ICR), August 2023.BibTeX TR2023-103 PDF
- @inproceedings{Laughman2023aug,
- author = {Laughman, Christopher R. and Deshpande, Vedang M. and Qiao, Hongtao and Bortoff, Scott A. and Chakrabarty, Ankush},
- title = {Digital Twins for Vapor Compression Cycles: Challenges & Opportunities},
- booktitle = {International Congress of Refrigeration (ICR)},
- year = 2023,
- month = aug,
- url = {https://www.merl.com/publications/TR2023-103}
- }
- , "https://iwww.merl.com/TR/camready-4505.pdf", Modeling, Estimation and Control Conference, DOI: 10.1016/j.ifacol.2022.11.168, December 2022, pp. 99-106.BibTeX TR2022-170 PDF
- @inproceedings{Bhattacharya2022dec,
- author = {Bhattacharya, Chandrachur and Chakrabarty, Ankush and Laughman, Christopher R. and Qiao, Hongtao},
- title = {https://iwww.merl.com/TR/camready-4505.pdf},
- booktitle = {Modeling, Estimation and Control Conference},
- year = 2022,
- pages = {99--106},
- month = dec,
- doi = {10.1016/j.ifacol.2022.11.168},
- url = {https://www.merl.com/publications/TR2022-170}
- }
- , "Performance Enhancements for Zero-Flow Simulation of Vapor Compression Cycles", American Modelica Conference, DOI: 10.3384/ECP21186128, October 2022, pp. 128-135.BibTeX TR2022-137 PDF
- @inproceedings{Qiao2022oct,
- author = {Qiao, Hongtao and Laughman, Christopher R.},
- title = {Performance Enhancements for Zero-Flow Simulation of Vapor Compression Cycles},
- booktitle = {PROCEEDINGS OF THE AMERICAN MODELICA CONFERENCE 2022},
- year = 2022,
- pages = {128--135},
- month = oct,
- doi = {10.3384/ECP21186128},
- url = {https://www.merl.com/publications/TR2022-137}
- }
- , "A Low-Order Model for Nonlinear Dynamics of Heat Exchangers", International Refrigeration and Air Conditioning Conference (IRACC), July 2022.BibTeX TR2022-123 PDF
- @inproceedings{Qiao2022sep2,
- author = {Qiao, Hongtao and Laughman, Christopher R.},
- title = {A Low-Order Model for Nonlinear Dynamics of Heat Exchangers},
- booktitle = {International Refrigeration and Air Conditioning Conference (IRACC)},
- year = 2022,
- month = jul,
- url = {https://www.merl.com/publications/TR2022-123}
- }
- , "Theoretical analysis of cycling losses in air source heat pump systems", International Congress of Refrigeration (ICR), September 2023.
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Other Publications
- , "Modelica-based Heat Pump Model for Transient and Steady-state Simulation Using Low-GWP Refrigerants", 15th International Refrigeration and Air-Conditioning Conference at Purdue, July 2014.BibTeX External
- @Inproceedings{Ling2014IRACC,
- author = {Ling, J. and Alabdulkarem, A. and Qiao, H. and Aute, V. and Radermacher, R},
- title = {Modelica-based Heat Pump Model for Transient and Steady-state Simulation Using Low-GWP Refrigerants},
- booktitle = {15th International Refrigeration and Air-Conditioning Conference at Purdue},
- year = 2014,
- month = jul,
- url = {https://www.conftool.com/2014Purdue/}
- }
- , "A New Dynamic Heat Exchanger Model with Frosting and Defrosting", 15th International Refrigeration and Air-Conditioning Conference at Purdue, July 2014.BibTeX External
- @Inproceedings{Qiao2014IRACC,
- author = {Qiao, H. and Aute, V. and Radermacher, R.},
- title = {A New Dynamic Heat Exchanger Model with Frosting and Defrosting},
- booktitle = {15th International Refrigeration and Air-Conditioning Conference at Purdue},
- year = 2014,
- month = jul,
- url = {https://www.conftool.com/2014Purdue/}
- }
- , "An Improved Moving Boundary Heat Exchanger Model with Pressure Drop", 15th International Refrigeration and Air-Conditioning Conference at Purdue, July 2014.BibTeX External
- @Inproceedings{Qiao2014IRACCa,
- author = {Qiao, H. and Aute, V. and Radermacher, R.},
- title = {An Improved Moving Boundary Heat Exchanger Model with Pressure Drop},
- booktitle = {15th International Refrigeration and Air-Conditioning Conference at Purdue},
- year = 2014,
- month = jul,
- url = {https://www.conftool.com/2014Purdue/}
- }
- , "Transient Modeling of a Multi-Evaporator Air Conditioning System and Control Method Investigation", 11th IEA Heat Pump Conference, May 2014.BibTeX External
- @Inproceedings{Qiao2014HPC,
- author = {Qiao, H. and Kwon, L. and Aute, V. and Radermacher, R.},
- title = {Transient Modeling of a Multi-Evaporator Air Conditioning System and Control Method Investigation},
- booktitle = {11th IEA Heat Pump Conference},
- year = 2014,
- month = may,
- url = {http://www.iea-hpc2014.org/conference-poster-program.php}
- }
- , "Recent Advances in Dynamic Modeling of HVAC Equipment -- Part II: Modelica-based Modeling", HVAC&R Research, Vol. 20, No. 1, pp. 150-161, 2014.BibTeX External
- @Article{Li2014HVACR,
- author = {Li, P. and Li, Y. and Seem, J. and Qiao, H. and Li, X. and Winkler, J.},
- title = {Recent Advances in Dynamic Modeling of HVAC Equipment -- Part II: Modelica-based Modeling},
- journal = {HVAC\&R Research},
- year = 2014,
- volume = 20,
- number = 1,
- pages = {150--161},
- url = {http://www.tandfonline.com/doi/full/10.1080/10789669.2013.836876}
- }
- , "Recent Advances in Dynamic Modeling of HVAC Equipment -- Part I: Equipment Modeling", HVAC&R Research, Vol. 20, No. 1, pp. 136-149, 2014.BibTeX External
- @Article{Li2014HVACRa,
- author = {Li, P. and Qiao, H. and Li, Y. and Seem, J. and Winkler, J. and Li, X.},
- title = {Recent Advances in Dynamic Modeling of HVAC Equipment -- Part I: Equipment Modeling},
- journal = {HVAC\&R Research},
- year = 2014,
- volume = 20,
- number = 1,
- pages = {136--149},
- url = {http://www.tandfonline.com/doi/full/10.1080/10789669.2013.836877}
- }
- , "Transient Modeling of a Flash Tank Vapor Injection Heat Pump System - Part II: Simulation Results and Experimental Validation", International Journal of Refrigeration, 2014.BibTeX External
- @Article{Qiao2014IJR,
- author = {Qiao, H. and Xu, X. and Aute, V. and Radermacher, R.},
- title = {Transient Modeling of a Flash Tank Vapor Injection Heat Pump System - Part II: Simulation Results and Experimental Validation},
- journal = {International Journal of Refrigeration},
- year = 2014,
- url = {http://www.sciencedirect.com/science/article/pii/S0140700714001819}
- }
- , "Transient Modeling of a Flash Tank Vapor Injection Heat Pump System - Part I: Model Development", International Journal of Refrigeration, 2014.BibTeX External
- @Article{Qiao2014IJRa,
- author = {Qiao, H. and Aute, V. and Radermacher, R.},
- title = {Transient Modeling of a Flash Tank Vapor Injection Heat Pump System - Part I: Model Development},
- journal = {International Journal of Refrigeration},
- year = 2014,
- url = {http://www.sciencedirect.com/science/article/pii/S0140700714001820}
- }
- , "Transient Modeling and Validation of an Automotive Secondary Loop Air-conditioning System", SAE Technical Paper 2014-01-0647, 2014.BibTeX External
- @Article{Qiao2014TR,
- author = {Ling, J. and Eisele, M. and Qiao, H. and Aute, V. and Hwang, Y. and R., Radermacher},
- title = {Transient Modeling and Validation of an Automotive Secondary Loop Air-conditioning System},
- journal = {SAE Technical Paper 2014-01-0647},
- year = 2014,
- url = {http://papers.sae.org/2014-01-0647/}
- }
- , "A New Model for Plate Heat Exchanger with Generalized Flow Configurations and Phase Change", International Journal of Refrigeration, Vol. 36, No. 2, pp. 622-632, 2013.BibTeX External
- @Article{Qiao2013IJR,
- author = {Qiao, H. and Aute, V. and Lee, H. and Saleh, K. and Radermacher, R.},
- title = {A New Model for Plate Heat Exchanger with Generalized Flow Configurations and Phase Change},
- journal = {International Journal of Refrigeration},
- year = 2013,
- volume = 36,
- number = 2,
- pages = {622--632},
- url = {http://www.sciencedirect.com/science/article/pii/S0140700712003283}
- }
- , "Comparison of Equation-based and Non-equation-based Approaches for Transient Modeling of a Vapor Compression Cycle", 14th International Refrigeration and Air-Conditioning Conference at Purdue, July 2012.BibTeX External
- @Inproceedings{Qiao2012IRACC,
- author = {Qiao, H. and Aute, V. and Radermacher, R.},
- title = {Comparison of Equation-based and Non-equation-based Approaches for Transient Modeling of a Vapor Compression Cycle},
- booktitle = {14th International Refrigeration and Air-Conditioning Conference at Purdue},
- year = 2012,
- month = jul,
- url = {http://docs.lib.purdue.edu/iracc/1205/}
- }
- , "Modelica-based Transient Modeling for a Flash Tank Vapor Injection System and Experimental Validation", 14th International Refrigeration and Air-Conditioning Conference at Purdue, July 2012.BibTeX External
- @Inproceedings{Qiao2012IRACCa,
- author = {Qiao, H. and Xu, X. and Aute, V. and Radermacher, R.},
- title = {Modelica-based Transient Modeling for a Flash Tank Vapor Injection System and Experimental Validation},
- booktitle = {14th International Refrigeration and Air-Conditioning Conference at Purdue},
- year = 2012,
- month = jul,
- url = {http://docs.lib.purdue.edu/iracc/1202/}
- }
- , "A New Model for Plate Heat Exchangers with Generalized Configurations and Phase Change", 10th IIR-Gustav Lorentzen Conference on Natural Working Fluid, June 2012, vol. 1, pp. 127-136.BibTeX External
- @Inproceedings{Qiao2012IIR,
- author = {Qiao, H. and Aute, V. and Lee, H. and Radermacher, R.},
- title = {A New Model for Plate Heat Exchangers with Generalized Configurations and Phase Change},
- booktitle = {10th IIR-Gustav Lorentzen Conference on Natural Working Fluid},
- year = 2012,
- volume = 1,
- pages = {127--136},
- month = jun,
- url = {http://toc.proceedings.com/15739webtoc.pdf}
- }
- , "Optimization of Fin Density for Plate Fin Heat Exchanger", 13th International Refrigeration and Air-Conditioning Conference at Purdue, July 2010.BibTeX External
- @Inproceedings{Qiao2010IRACC,
- author = {Qiao, H. and Singh, V. and Aute, V. and Radermacher, R.},
- title = {Optimization of Fin Density for Plate Fin Heat Exchanger},
- booktitle = {13th International Refrigeration and Air-Conditioning Conference at Purdue},
- year = 2010,
- month = jul,
- url = {https://www.conftool.com/2012Purdue/}
- }
- , "A Review for Numeric Simulation of Vapor Compression Systems", 13th International Refrigeration and Air-Conditioning Conference at Purdue, July 2010.BibTeX External
- @Inproceedings{Qiao2010IRACCa,
- author = {Qiao, H. and Radermacher, R. and Aute, V.},
- title = {A Review for Numeric Simulation of Vapor Compression Systems},
- booktitle = {13th International Refrigeration and Air-Conditioning Conference at Purdue},
- year = 2010,
- month = jul,
- url = {http://docs.lib.purdue.edu/iracc/1090/}
- }
- , "Ways to Improve Thermal Uniformity inside a Refrigerator", Applied Thermal Engineering, Vol. 24, No. 13, pp. 1827-1840, 2004.BibTeX External
- @Article{Ding2004ATE,
- author = {Ding, G. and Qiao, H. and Lu, Z.},
- title = {Ways to Improve Thermal Uniformity inside a Refrigerator},
- journal = {Applied Thermal Engineering},
- year = 2004,
- volume = 24,
- number = 13,
- pages = {1827--1840},
- url = {http://www.sciencedirect.com/science/article/pii/S1359431104000092}
- }
- , "Modelica-based Heat Pump Model for Transient and Steady-state Simulation Using Low-GWP Refrigerants", 15th International Refrigeration and Air-Conditioning Conference at Purdue, July 2014.
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Videos
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MERL Issued Patents
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Title: "System and Method for Calculation of Thermofluid Properties using Saturation Curve-Aligned Coordinates"
Inventors: Laughman, Christopher; Bortoff, Scott A.; Qiao, Hongtao
Patent No.: 11,739,996
Issue Date: Aug 29, 2023 -
Title: "System and Method for Designing Heating, Ventilating, and Air-Conditioning (HVAC) Systems"
Inventors: Nabi, Saleh; Qiao, Hongtao
Patent No.: 11,580,281
Issue Date: Feb 14, 2023 -
Title: "CONTROLLING HVAC SYSTEM BY INVERSING AIRFLOW DYNAMICS"
Inventors: Nabi, Saleh; Qiao, Hongtao; Grover, Piyush
Patent No.: 11,162,701
Issue Date: Nov 2, 2021 -
Title: "System and Method for Power Optimizing Control of Multi-Zone Heat Pumps"
Inventors: Bortoff, Scott A.; Burns, Daniel J; Laughman, Christopher; Qiao, Hongtao
Patent No.: 10,895,412
Issue Date: Jan 19, 2021 -
Title: "System and Method for Controlling Refrigerant in Vapor Compression System"
Inventors: Laughman, Christopher; Qiao, Hongtao; Burns, Daniel J; Bortoff, Scott A.
Patent No.: 10,830,515
Issue Date: Nov 10, 2020 -
Title: "Coordinated Operation of Multiple Space-Conditioning Systems"
Inventors: Laughman, Christopher; Qiao, Hongtao; Burns, Daniel J; Bortoff, Scott A.
Patent No.: 10,234,158
Issue Date: Mar 19, 2019
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Title: "System and Method for Calculation of Thermofluid Properties using Saturation Curve-Aligned Coordinates"