Photo of James Freihaut

James Freihaut

Professor

Affiliation(s):

  • Architectural Engineering

104 Engineering Unit A

jdf11@psu.edu

814-863-0083

Research Areas:

Building Mechanical Systems

Interest Areas:

Indoor Air Quality and Building Science, combined heat and power systems, distributed energy systems, enclosed space air quality issues, system constraints on air treatment/filtration solutions.

 
 

 

Education

Publications

Journal Articles

  • S. Martin, E. Shogren, D. Blum, P. Kremer, W. Bahnfleth and James Freihaut, 2012, "Issues Surrounding Air-Phase Ultraviolet Inactivation Rate Constants (k-values) and the Development of a Dual-Collimation Batch Reactor for Determining k-values for Airborne Microorganisms", Indoor Air Journal
  • S. Martin, E. Shogren, D. Blum, P. Kremer, W. Bahnfleth and James Freihaut, 2012, "A Novel Dual-Collimation Batch Reactor for Determination of Ultraviolet Inactivation Rate Constants for Microorganisms in Aqueous Suspensions", Indoor Air Journal
  • J. Firrantello, P. Aumpansub, W. P. Bahnfleth, B. Hu, James Freihaut, B. Thran and S. Hutchens, 2007, "Effects of HVAC System and Building Characteristics on Exposure of Occupants to Short-Duration Point Source Aerosol Releases", Journal of Architectural Engineering, (2), pp. 84-94
  • James Freihaut, M. Chapman, A. Salapatek and P. Patel, 2007, "Aerodynamic Properties of Milled Allergen Products: Preparation of "Standard, Air-suspendable Dog, Cat, Cockroach and Mite Allergen Powders", Allergy: European Journal of Allergy and Clinical Immunology, 62, pp. pg. 38
  • J. Firrantello, W. P. Bahnfleth, A. Musser, James Freihaut and J.-W. Jeong, 2007, "Use of Factorial Sensitivity Analysis in Multizone Airflow Model Tuning", ASHRAE Transactions, 113, pp. 642-651
  • A. Salapatek, P. Patel, N. Mec, L. Nimraj, A. Ramoutar, M. D. Chapman and James Freihaut, 2007, "Development of Asthma Study Technologies in an Environmental Chamber (ASTEC)", The Journal of Allergy and Clinical Immunology, 119, (1), pp. S3
  • C. Gomes, James Freihaut and W. P. Bahnfleth, 2007, "Resuspension of Allergen-Carrying Particles Under Mechanical and Aero-dynamic Disturbances from Human-Walking", Atmospheric Environment, 41, pp. 5257-5270

Conference Proceedings

  • K. Xu, P. Delgoshaei, S. Wagner and James Freihaut, 2013, ""As-Operated" Whole Building Energy Models for Existing Commercial Medium Office Buildings-A Case Study", 2013 Architectural Engineering Institute (AEI) Conference
  • P. Delgoshaei, K. Xu, S. Wagner and James Freihaut, 2013, "Plug Load Measurement for a Medium Office Building- A Case Study", 2013 Architectural Engineering Institute (AEI) Conference
  • K. Xu and James Freihaut, 2012, "Building and System Level Sensitivity Analysis to U.S. DOE Commercial Reference Office Building in Different Climate Zones", The 1st Asia conference of International Building Performance Simulation Association
  • A. M. Salapatek, S. McCue, L. Minray, B. Walsh, H. Nandkeshore, M. Chapman, J. Corren, James Freihaut and P. Pater, 2007, "Validation of a Natural Cat Allergen Challenge Room (CACR)", Proceedings of the World Allergy Conference, pp. 3
  • J. Lau, W. P. Bahnfleth and James Freihaut, 2007, "Estimating the Effects of Ambient Conditions and Aging on the Performance of UVGI Air Cleaners", Proceedings of the 6th International Conference on Indoor Air Quality, Ventilation & Energy Conservation in Buildings, (IAQVEC 2007), pp. 15
  • J. Lau, W. P. Bahnfleth and James Freihaut, 2007, "Predicted Performance of In-Duct UVGI Systems Under Variable Operating Conditions", Proceedings of ASHRAE Indoor Air Quality, IAQ 2007 Healthy and Sustainable Buildings, pp. 16
  • James Freihaut, M. Chapman, A. Salapatek and P. Patel, 2007, "Aerodynamic Properties of Milled Allergen Products: Preparation of "Standard," Air-suspendable Dog, Cat, Cockroach and Mite Allergen Powders", Proceedings of XXVI Congress of the European Academy of Allergology and Clinical Immunology, pp. 3
  • C. Gomes, W. P. Bahnfleth, B. Thran and James Freihaut, 2007, "Production of Characterized, Air Suspendable Dusts Containing Common Indoor Allergens for Inhalation Exposure Research", Proceedings of the 9th REHVA World Congress Clima, pp. 12
  • James Freihaut, A. M. Salapatek and P. Pytel, 2007, "Standardization of Dust Mite Allergen Inhalant for Use in an Environmental Exposure Chamber (EEC)", Proceedings of the American Academy of Allergology and Clinical Immunology, 63rd Annual Congress, pp. pg. 3
  • J. Firrantello, W. P. Bahnfleth, A. Musser, James Freihaut and J.-W. Jeong, 2005, "Application of Sensitivity Analysis to Multizone Airflow Model Tuning", Proceedings of Clima 2005 (8th REHVA World Congress), pp. 7
  • W. Bahnfleth, W. Kowalski and James Freihaut, 2005, "Standards and Guidelines for UVGI Air Treatment Systems", Proceedings of Indoor Air 2005 (10th International Conference on Indoor Air Quality and Climate), pp. 5
  • C. Gomes, James Freihaut and W. Bahnfleth, 2005, "Resuspension of Allergen-Containing Particles under Mechanical and Aerodynamic Disturbances from Human Walking - Introduction to an Experimental Controlled Disturbance Methodology", Proceedings of Indoor Air 2005 - The 10th International Conference on Indoor Air Quality and Climate, pp. 7
  • B. Hu, James Freihaut, C. Gomes and B. Thran, 2005, "Literature Review: Indoor Particle Re-suspension by Human Activity", Proceedings of Indoor Air 2005 - The 10th International Conference on Indoor Air Quality and Climate, pp. 7

Manuscripts

  • B. Hu, James Freihaut, W. P. Bahnfleth and B. Thran, , "Simulating Transient Particle Deposition/Re-suspension in Indoor Environments with Multi-zone Airflow and Contaminant Transport Software"
  • H. C. Foley, James Freihaut, P. Hallacher and C. Knapp, , "The Greater Philadelphia Innovation Cluster (GPIC) for Energy-Efficient Buildings: A New Model for Public-Private Partnerships", Research Technology Management, pp. 15
  • B. Hu, James Freihaut, W. P. Bahnfleth, P. Aumpansub and B. Thran, , "Modeling Particle Dispersion under Human Activity in a Mulitzone Indoor Environment", Journal of Architectural Engineering
  • J.-W. Jeong, J. Firrantello, James Freihaut, W. Bahnfleth and A. Musser, , "Feasibility of Wireless Measurements for Semi-Empirical Multizone Airflow Model Tuning", Energy and Buildings
  • J. Firrantello, W. P. Bahnfleth, J.-W. Jeong, A. Musser and James Freihaut, , "Field Testing of Data Driven Multizone Model Calibration Procedure", Building Services Engineering Research and Technology

Research Projects

Honors and Awards

Service

Service to Penn State:

  • Member, Development Task Force, August 2015 - August 2016
  • Member, Promotionand Tenure Committee, January 2014 - January 2016
  • Chairperson, Graduate Studies Committee - (GPO), August 2014 - August 2016
  • Member, Executive Committee - Mechanical (GPO), August 2014 - August 2016
  • Member, Undergraduate Studies Committee - (GPO - as needed), August 2014 - August 2016
  • Member, University Faculty Senate Outreach Committee, September 2006
  • , Planning Committee for Berks County Industrial Development Ctr. Microgrid, 2015

Service to External Organizations:

  • Instructor, Visiting Professor Dalian University of Technology, 2015 - 2018
  • Instructor, Dalian University of Technology Seasky Scholar, 2012 - 2015
  • Member, Singapore National Research Foundation Review Committee, 2015
  • Member, Technical Advisory Committee for Energy Integration Systems R&D of the National Renewable Energy Laboratory, 2015
 


 

About

Widely acknowledged as one of the top Architectural Engineering programs in the world, the Penn State AE Department is dedicated to providing outstanding academic excellence to all of our students. The AE program is focused on preparing students and conducting research in the design, engineering, and construction of building projects.

Department of Architectural Engineering

104 Engineering Unit A

The Pennsylvania State University

University Park, PA 16802

Phone: 814-865-6394