Josephine Lau

Josephine Lau 

Josephine Lau
Contact Information:
PKI 203D
Omaha
(402) 554-2079
jlau3@unl.edu
Email   

Assistant Professor
  • Ph.D. Architectural Engineering, The Pennsylvania State University, USA
  • M. S. Mechanical Engineering, Purdue University, USA
  • M.Eng. & B.Eng. (Hons) Building Services Engineering (w/ distinction and 1st Class Honours) The Hong Kong Polytechnic University, Hong Kong

Areas of Research and Professional Interest
  • Building sustainability
  • Indoor air quality
  • occupant’s comfort and performance in indoor environments
  • Energy efficiency of ventilation systems
  • Energy simulations; Air flow modeling
  • Renewable energy
  • Air cleaning technology
  • Infection controls
  • School and hospital ventilation


Experience

Assistant Professor, Architectural Engineering, Durham School of Architectural Engineering and Construction (DSAEC), UNL College of Engineering (September 2009 – present)

Teaching Experience:
  • AE 8116 – “Indoor Air Quality Engineering”
  • AE 9180 – “Indoor Environmental and Energy Modelling”
  • AE 8010/8020 --“Graduate Design Project”
  • AE 3100 – “HVAC fundamentals”
  • MENG 2000 – “Thermodynamics”
Other Teaching Experience:
  • Graduate Teaching Assistantship, Department of Architectural Engineering, The Pennsylvania State University (2008)
Full-time Industrial Experience:
  • Acron International Technology Ltd. , Assistant Engineer (summer, 2002)
  • Hongkong Land Properties Management Co., Summer Trainee (summer, 2001)
  • Hong Kong Electrical and Mechanical Services Department, Summer Trainee (summer 2000)

Honors and Awards

  • UNL-College of Engineering – "Henry Y Kleinkauf Family Distinguished New Faculty Teaching Award" (University of Nebraska), 2013
  • Architectural Engineering 2011 Mentoring Award (University of Nebraska), 2011
  • Alumni Association Dissertation Award (The Pennsylvania State University) 2009
  • ASHRAE Grant-in-Aid (American Society of Heating, Refrigerating and Air-Conditioning Engineers) 2007-2008
  • Kissinger Fellowship (The Pennsylvania State University) 2005-2006
  • Outstanding Student (The Hong Kong Polytechnic University) 2001-2002
  • Ryoden Scholarship (The Hong Kong Polytechnic University) 2000-2001
  • Kai Chong Tong Scholarship (The Hong Kong Polytechnic University) 1999-2000
  • Chinese Speech competition - Merit (Hong Kong Speech Festival) 1997
  • Service and Responsibility Awards (Holy Family Canossian College) 1996-1997
Professional Service:
  • Journal Editorships - Deputy Editor (2013) and Regional Editor (2014-Present) for Indoor and Built Environment (I+BE); Associate Editor (2012 - Present) for Journal of Architectural Engineering (JAE)
  • Reviewers for journals - Journal of Architectural Engineering; Indoor and Built Environment; Energy and Buildings; Building and Environment; Energy; Indoor Air; Building Simulation: An International Journal; HVAC&R; International Journal of Building, Urban, Interior and Landscape Technology: BUILT

Funding

Externally Funded Research Grants
  1. “Evidence-Based Interactions between Indoor Environmental Factors and Their Effects on K-12 Student Achievement” (November 2014 – October 2018); Sponsor:  Environmental Protection Agency (EPA); PI:  L. Wang ; Co-PIs: J. Lau , J. Bovaird , and C. Waters; Amount:  $ 998,433
  2. “Passively Cooled Data Center Validation Research” (Dec. 2013 – Dec 2014); Sponsor:  Henningson, Durham and Richardson, Inc. (HDR Engineering); PI:  J. Lau; Co-PIs:  T. Hemsath, S. Bhowmick; Amount:  $ 65,000
  3. “Energy Compliance and Measurement” (Jan. 2013 – May. 2013); Sponsor:  Nebraska Energy Office (NEO); PI:  T. Hemsath; Co-PIs:  J. Lau, J. Goedert, and T. Wentz; Amount:  $16,605
  4. “RP-1462:  Active Mechanisms for Enhancing Heat and Mass Transfer in Sorption Fluids ” (Dec. 2012 – Nov 2014); Sponsor:  American Society of Heating, Refrigeration and Air-Conditioning Engineers (ASHRAE); PI:  J. Lau ; Co-PI:  Y. Yu; Amount:  $143,168
  5. “Residential Ventilation Testing and Analysis” (May 2013 – April 2014); Sponsor:  ASHRAE; PI:  J. Lau; Amount:  $3,880
  6. “Air Flow Technology Development” (Jan. 2012 – July 2012); Sponsor:  Bes-Tech, Inc;  PI:  J. Lau; Sponsor Amount:  $46,336
  7. "ECO24/7 Study Proposal for the Mahoney Building at the Metro Community College South Omaha Campus” (June 2011 – December. 2011); Sponsor:  Omaha Public Power District (OPPD); PI:  J. Lau; Sponsor Amount:  $17,700
  8. “ECO24/7 Study Proposal for Building 10 at Metro Community College South Omaha Campus” (July 2011 – September 2011); Sponsor:  Omaha Public Power District (OPPD); PI:  J. Lau ; Amount:  $12,800
  9. “CO2-based Demand Control Ventilation (DCV) of Multiple-zones in a LEED Building” (May 2011 – April 2012); Sponsor:  ASHRAE; PI:  J. Lau; Amount:  $5,000
  10. “RP-1547: CO2-Based Demand Controlled Ventilation for Multiple Zone HVAC Systems” (September 2010 – November 2013) ; Sponsor:  ASHRAE; PI:  J. Lau ; Co-PI: G. Yuill; Amount:  $112,829
Internally Funded Research Grants
  1. “The performance of air disinfection technology for minimizing biological contaminants, airborne infection risk and sick-leave in buildings” (July 2011 – June 2013); Sponsor:  Durham School Faculty Seed Grant; PI:  J. Lau ; Co-PI: Shawn Gibbs; Sponsor Amount:  $33,302
  2. “The performance of air disinfection technology for minimizing biological contaminants, airborne infection risk and sick-leave in schools” (July 2011 – June 2012); Sponsor:  UNL Layman Award; PI:  J. Lau; Sponsor Amount:  $ 9,999

Selected Publications

* indicates student lead author
  • * C.Su, J. Lau, and S.G. Gibbs, (2015) “Evaluation of Ultraviolet Germicidal Irradiation in Reducing the Airborne Cultural Bacteria Concentrations in an Elementary School in the Midwestern United States” Journal of Environmental Health, (accepted and scheduled for May 2015)
  • * C. Su, J. Lau, and S.G. Gibbs (2015) “Student Absenteeism and the Comparisons of Two Sampling procedures for Culturable Bioaerosol Measurement in Classrooms with and without Upper-room Ultraviolet Germicidal Irradiation Devices.” Indoor and Built Environment (accepted)
  • * X. Lin and J. Lau, (2014) “Demand Controlled Ventilation for multiple zone HVAC systems: CO2-based dynamic reset with zone primary airflow minimum setpoint reset (1547-RP)” HVAC&R, (submitted)
  • * X. Lin and J. Lau, (2014) “Demand Controlled Ventilation for multiple zone HVAC systems: part 1 – CO2-based dynamic reset (1547-RP)” HVAC&R, Vol 20(8), 875-888
  • * A. Behfar, Z. Shen, J. Lau, and Y. Yu (2014) “Heat and mass transfer enhancement potential for absorption equipment via a literature review (1547-RP)” HVAC&R, Vol. 20 (5), 570-580
  • * S. Deng, J. Lau, and J-W. Jeong (2014) “Do all System Configurations Provide Same Benefits of Dedicated Outdoor Air Systems (DOAS)?” ASHRAE Journal,Vol. 56(7), 52-57.
  • * X. Lin, J. Lau, and G. Yuill, (2014) “Evaluation on the validity of the assumptions underlying CO2-based demand-controlled ventilation (1547-RP)” ASHRAE Transactions, Vol. 120 (1), 81-93
  • * B. Zhang, Y. Li, J. Lau, and M. Liu, (2014) “Demand Control Ventilation: Influence of Terminal Box Minimum Airflow Setting on System Energy Consumption” Energy and Building, Vol. 79, 173-183
  • * Y. Li, M. Liu, J. Lau, and B. Zhang, (2014) “Experimental Study on Electrical Signatures of Common faults for Packaged DX rooftop units” Energy and Building, Vol. 77, 401-415
  • * H. Yang, Y. Shi, J. Lau, and T. Zhang, (2014) “An Optimal Control Strategy Based on Virtual Flow Measuring for Variable Flow Primary Pumping” HVAC&R, Vol. 20(4), 411-423
  • *C. Su, J. Lau and S. Gibbs, (2014) “A Field Test to Performance of Upper-room UVGI in Elementary School” Proceedings of Indoor Air 2014, Hong Kong SAR, China, July 7-12, 2014.
  • *C. Su, J. Lau and F. Yu, (2014) “Applying Real-time Bioaerosol Monitor to Evaluate Upper-room UVGI in Classroom” Proceedings of Indoor Air 2014, Hong Kong SAR, China, July 7-12, 2014.
  • *S. Deng, and J. Lau, (2014) “Energy Simulation of Different DOAS System Configurations among different Climates” Proceedings of Indoor Air 2014, Hong Kong SAR, China, July 7-12, 2014.
  • *X. Lin, and J. Lau (2014) “CO2-based dynamic reset of outdoor airflow rate for multiple zone HVAC systems” Proceedings of Indoor Air 2014, Hong Kong SAR, China, July 7-12, 2014.
  • J. Lau, (2013). “CO2-Based Demand Controlled Ventilation for Variable Air Volume Systems Serving Multiple Zones”. Indoor and Built Environment, Vol 22(5), 721-723. Editorial Note.
  • J. Lau, and D. Stanke, (2012) “DCV for Multizone VAV” ASHRAE Journal - IAQ Applications, Vol 54 (8)
  • J. Lau, W. Bahnfleth, R. Mistrick and D. Kompare, (2012) “Ultraviolet irradiance measurement and modeling for evaluating the effectiveness of in-duct ultraviolet germicidal irradiation devices” HVAC&R Research, Vol 18(4), 626-642
  • *H. Brink, J. Lau, and X. Lin (2012) “Evaluation of a Demand Controlled Ventilation Strategy for a Multizone Campus Building” Proceedings of High Performance Buildings 2012, West Lafayette, IN, USA, paper 3544, July 16-19, 2012.
  • *X. Lin,  and J. Lau, (2012)“Simulation-based Validation of A CO2-based Demand Controlled Ventilation Control Logic for Multiple-Zone VAV System” Proceedings of Healthy Building 2012, Brisbane, Queensland, Australia, July 8-12, 2012.
  • *C. Su,  and J. Lau, (2011) “Review of air cleaning technologies in ventilation system for bio-aerosols” Proceedings of Indoor Air 2011, Austin, Texas, USA, June 5-10, 2011.
  • *X. Lin,  and J. Lau, (2011) “Three Types of Demand-Controlled Ventilation Logic in a Single Zone System with Transient Analysis” Proceedings of Indoor Air 2011, Austin, Texas, USA June 5-10, 2011.
  • J. Lau,  and D. Kompare1, (2010) “Effectiveness of the In-duct Ultraviolet Germicidal Irradiation Devices with Two Modeled Lamp Configurations” Proceedings of IAQ 2010, Kuala Lumpur, Malaysia, November 10-12, 2010.
  • *C. Luke and J Lau, (2010) “Case Studies on Indoor Air Quality and Thermal Comfort in Two Portable Classrooms in Winter” Proceedings of the 7th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings, Syracuse, New York, USA
  • J. Lau, W. Bahnfleth, P. Kremer and J. Freihaut, (2009) "Estimating the effects of ambient conditions on the performance of UVGI air cleaners", Building and Environment, Vol. 44 (7), 1362-1370
  • Bahnfleth, W., J. Lau, P. Kremer, D. Clark, J. Freihaut. September 2008. Emerging Filter & UV Devices for Energy Efficient IAQ in Commercial Buildings-Penn State Laboratory Upgrades and Testing Activities Task 05-02.3. Report to National Center for Energy Management and Building Technologies. 123 pages.
  • W. Bahnfleth, J. Lau, and J. Freihaut, (2008) "Wind Chill Effects on Germicidal Ultraviolet Lamps" ASHRAE - IAQ Applications, Vol. 9 (4).
  • S. Martin, C. Dunn, J. Freihaut, W.Bahnfleth, J. Lau, A. Nedeljkovic-Davidovic, (2008) "Ultraviolet Germicidal Irradiation Current Best Practices" ASHRAE Journal, 50(8), 28-36
  • J. Lau, W. Bahnfleth, P. Kremer and J. Freihaut, (2008) "Investigation of surface temperature distributions of UVC lamps under variable flow conditions using infrared camera measurements" Proceedings of Indoor Air 2008, Aug, Copenhagen, Denmark.
  • J. Lau, W. Bahnfleth, R. Mistrick, P. Kremer and J. Freihaut, (2008) "Modeling and measurement of the irradiance distribution in an in-duct UVGI Device" Proceedings of Indoor Air 2008, Aug, Copenhagen, Denmark.
  • J. Lau, W. Bahnfleth and J. Freihaut, (2007) "Predicted performance of in-duct UVGI systems under variable operating conditions," Proceedings of IAQ 2007, Oct, Baltimore, MD, USA
  • J. Lau, W. Bahnfleth and J. Freihaut, (2007) "Estimating the effects of ambient conditions and aging on the performance of UVGI air cleaners," Proceedings of 6th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings, Oct, Sendai, Japan
  • J. Lau. and Q. Chen, (2007) "Floor-supply displacement ventilation for workshops," Building and Environment, 42(4), 1718-1730.
  • J. Lau. and Q. Chen, (2006) "Energy analysis for workshops with floor-supply displacement ventilation under U.S. climates," Energy and Buildings, 38(10), 1212-1219.
  • J. Lau. and Q. Chen, (2005) "Impact of air supply and exhaust conditions on room air distribution with floor-supply displacement ventilation," Proceedings of Indoor Air 2005, Vol. I(2), 1391-1396, Beijing, China.
  • J. Lau, J.L. Niu, (2003) "Measurement and CFD simulation of temperature stratification of an atrium with floor level air supply method", Indoor + Built Environment. Vol. 12, 265-280

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