Josephine Lau, PhD

Associate Professor

  • 219 Citations
  • 8 h-Index
20032019
If you made any changes in Pure, your changes will be visible here soon.

Research Output 2003 2019

2019
seasonal variation
indoor air
Air quality
air quality
air

The effects of indoor environmental factors on students' academic achievement

Kabirikopaei, A., Kuhlenengel, M., Arthur, A., Bovaird, J. A., Lau, J., Waters, C. & Wang, L. M., Jan 1 2019, AEI 2019: Integrated Building Solutions - The National Agenda - Proceedings of the Architectural Engineering National Conference 2019. Ling, M. D. F., Leicht, R. M. & Solnosky, R. L. (eds.). American Society of Civil Engineers (ASCE), p. 257-264 8 p. (AEI 2019: Integrated Building Solutions - The National Agenda - Proceedings of the Architectural Engineering National Conference 2019).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Reverberation
Students
Air quality
Aerosols
Lighting
2017
1 Citation (Scopus)
Reaction Time
Students
Technology
Costs and Cost Analysis
Equipment and Supplies

An Investigation of School Environmental Effects on Student Achievement

Kuhlenengel, M. B., Brill, L. C., Deng, S., Lester, H. F., Bovaird, J. A., Lau, J., Wang, L. M. & Waters, C. E., Jan 1 2017, AEI 2017: Resilience of the Integrated Building - Proceedings of the Architectural Engineering National Conference 2017. American Society of Civil Engineers (ASCE), p. 927-939 13 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Environmental impact
Students
Air quality
Lighting
Acoustics
2016
1 Citation (Scopus)
Students
Research

Applying demand- controlled ventilation

Lin, X. & Lau, J., Jan 1 2016, In : ASHRAE Journal. 58, 1, p. 30-36 7 p.

Research output: Contribution to journalArticle

Ventilation
Air intakes
Impurities
Air
1 Citation (Scopus)

Experimental setup and methodology on active mechanisms for enhancing heat and mass transfer in sorption fluids

Shen, Z., Yu, Y. & Lau, J., 2016, ASHRAE Transactions - 2016 ASHRAE Annual Conference. Amer. Soc. Heating, Ref. Air-Conditoning Eng. Inc., Vol. 122. p. 122-133 12 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Sorption
Mass transfer
Heat transfer
Fluids
Testing

Low evaporator airflow detection using fan power for rooftop units

Li, Y., Zhang, B., Lau, J. & Liu, M., 2016, ASHRAE Transactions - 2016 ASHRAE Annual Conference. Amer. Soc. Heating, Ref. Air-Conditoning Eng. Inc., Vol. 122. p. 233-239 7 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Evaporators
Fans
Fouling
Cooling
Monitoring
1 Citation (Scopus)
Absenteeism
Students
Equipment and Supplies
Bacteria
Control Groups
2015
26 Citations (Scopus)

A novel method to determine the motor efficiency under variable speed operations and partial load conditions

Li, Y., Liu, M., Lau, J. & Zhang, B., Apr 5 2015, In : Applied Energy. 144, p. 234-240 7 p.

Research output: Contribution to journalArticle

speed
method
Demonstrations
test
parameter
Irradiation
3 Citations (Scopus)
Multiple zones
Ventilation
Energy conservation
Energy utilization
HVAC
5 Citations (Scopus)

Development of a variable speed compressor power model for single-stage packaged DX rooftop units

Li, Y., Liu, M. & Lau, J., Mar 5 2015, In : Applied Thermal Engineering. 78, p. 110-117 8 p.

Research output: Contribution to journalArticle

Compressors
Fault detection
Failure analysis
Refrigerants
Fans
1 Citation (Scopus)
Midwestern United States
irradiation
Bacteria
bacterium
Control Groups
2014

A field test to performance of upper-room UVGI in elementary school

Su, C., Lau, J. & Gibbs, S. G., 2014, Indoor Air 2014 - 13th International Conference on Indoor Air Quality and Climate. International Society of Indoor Air Quality and Climate, p. 722-725 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Disinfection
Air quality
Bacteria
4 Citations (Scopus)

An optimal control strategy based on virtual flow measuring for variable flow primary pumping

Yang, H., Shi, Y., Lau, J. & Zhang, T. C., May 19 2014, In : HVAC and R Research. 20, 4, p. 411-423 13 p.

Research output: Contribution to journalArticle

Pumps
Pressure control
Energy conservation
Energy utilization
Costs

Applying real-time bioaerosol monitor to evaluate upper-room UVGI in classroom

Su, C., Lau, J. & Yu, F., 2014, Indoor Air 2014 - 13th International Conference on Indoor Air Quality and Climate. International Society of Indoor Air Quality and Climate, p. 814-816 3 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Indoor Air Pollution

CO2-based dynamic reset of outdoor airflow rate for multiple zone HVAC systems

Lin, X. & Lau, J., 2014, Indoor Air 2014 - 13th International Conference on Indoor Air Quality and Climate. International Society of Indoor Air Quality and Climate, p. 370-372 3 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Multiple zones
HVAC
13 Citations (Scopus)

Demand controlled ventilation for multiple zone HVAC systems: CO 2 -based dynamic reset (RP 1547)

Lin, X. & Lau, J., Nov 15 2014, In : HVAC and R Research. 20, 8, p. 875-888 14 p.

Research output: Contribution to journalArticle

Multiple zones
Carbon Monoxide
Ventilation
Air quality
HVAC
10 Citations (Scopus)

Demand control ventilation: Influence of terminal box minimum airflow setting on system energy use

Zhang, B., Li, Y., Lau, J. & Liu, M., Jan 1 2014, In : Energy and Buildings. 79, p. 173-183 11 p.

Research output: Contribution to journalArticle

Air quality
Ventilation
Energy conservation
Thermal load
Power control
7 Citations (Scopus)

Do all DOAS configurations provide the same benefits?

Deng, S., Lau, J. & Jeong, J. W., Jul 1 2014, In : ASHRAE Journal. 56, 7, p. 52-57 6 p.

Research output: Contribution to journalArticle

Air
Cooling
Ventilation
Temperature
Engineers
3 Citations (Scopus)

Evaluation on the validity of the assumptions underlying CO 2-based demand-controlled ventilation by a literature review

Lin, X., Lau, J. & Yuill, G. K., Jan 1 2014, ASHRAE Transactions - ASHRAE Winter Conference. PART 1 ed. Amer. Soc. Heating, Ref. Air-Conditoning Eng. Inc., p. 81-87 7 p. (ASHRAE Transactions; vol. 120, no. PART 1).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Ventilation
Air quality
Carbon dioxide
Impurities
Air
6 Citations (Scopus)

Experimental study on electrical signatures of common faults for packaged DX rooftop units

Li, Y., Liu, M., Lau, J. & Zhang, B., Jan 1 2014, In : Energy and Buildings. 77, p. 401-415 15 p.

Research output: Contribution to journalArticle

Fault detection
Failure analysis
Temperature sensors
Refrigerants
Pressure measurement
2 Citations (Scopus)

Heat and mass transfer enhancement potential on falling film absorbers for water-LiBr mixtures via a literature review (RP-1462)

Behfar, A., Shen, Z., Lau, J. & Yu, Y., Jan 1 2014, In : HVAC and R Research. 20, 5, p. 570-580 11 p.

Research output: Contribution to journalArticle

Mass transfer
Heat transfer
Water
Absorption refrigeration
Heat transfer coefficients

Which doas configuration is preferred? A simulation study in 5 U.S. climates

Deng, S. & Lau, J., 2014, Indoor Air 2014 - 13th International Conference on Indoor Air Quality and Climate. International Society of Indoor Air Quality and Climate, p. 107-114 8 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Climate
Air
Fans
Energy conservation
2013
1 Citation (Scopus)

CO2-based demand controlled ventilation for variable air volume systems serving multiple zones

Lau, J., Oct 1 2013, In : Indoor and Built Environment. 22, 5, p. 721-723 3 p.

Research output: Contribution to journalEditorial

Ventilation
Air
2012

DCV for multizone VAV

Lau, J. & Stanke, D., Aug 1 2012, In : ASHRAE Journal. 54, 8, p. 84-86 3 p.

Research output: Contribution to journalArticle

Ventilation
Air quality
Air intakes
Dilution
Energy utilization

Simulation based validation of two CO2-based demand controlled ventilation control logic for multiple-zone VAV system

Lau, J. & Lin, X., Dec 1 2012, 10th International Conference on Healthy Buildings 2012. p. 364-369 6 p. (10th International Conference on Healthy Buildings 2012; vol. 1).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Multiple zones
Ventilation
Air
Air intakes
Energy utilization
7 Citations (Scopus)

Ultraviolet irradiance measurement and modeling for evaluating the effectiveness of in-duct ultraviolet germicidal irradiation devices

Lau, J., Bahnfleth, W., Mistrick, R. & Kompare, D., Aug 1 2012, In : HVAC and R Research. 18, 4, p. 626-642 17 p.

Research output: Contribution to journalArticle

Electric lamps
Ducts
Irradiation
Parallel flow
Ray tracing
2011
Electric lamps
Ducts
Software
Hot Temperature
Irradiation

Review of air cleaning technologies in ventilation system for bio-aerosols

Su, C. & Lau, J., Dec 1 2011, 12th International Conference on Indoor Air Quality and Climate 2011. p. 1168-1173 6 p. (12th International Conference on Indoor Air Quality and Climate 2011; vol. 2).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Ventilation
Aerosols
Cleaning
Air
Irradiation
1 Citation (Scopus)

Three types of Demand-Controlled Ventilation logic in a single zone system with transient analysis

Lin, X. & Lau, J., Dec 1 2011, 12th International Conference on Indoor Air Quality and Climate 2011. p. 1162-1167 6 p. (12th International Conference on Indoor Air Quality and Climate 2011; vol. 2).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Transient analysis
Ventilation
Flow rate
Air intakes
Air
2009
3 Citations (Scopus)

Annual simulation of in-duct ultraviolet germicidal irradiation system performance

Bahnfleth, W., Lee, B., Lau, J. & Freihaut, J., Dec 1 2009, p. 1151-1158. 8 p.

Research output: Contribution to conferencePaper

Ultraviolet
Irradiation
Ducts
Annual
System Performance
16 Citations (Scopus)

Estimating the effects of ambient conditions on the performance of UVGI air cleaners

Lau, J., Bahnfleth, W. & Freihaut, J., Jul 1 2009, In : Building and Environment. 44, 7, p. 1362-1370 9 p.

Research output: Contribution to journalArticle

Air cleaners
irradiation
Electric lamps
air
Irradiation

UVC output dependence of low pressure mercury vapor lamps in parallel and cross flow on air temperature and velocity

Lau, J., Bahnfleth, W. & Freihaut, J., 2009, 9th International Conference and Exhibition - Healthy Buildings 2009, HB 2009.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Mercury vapor lamps
Electric lamps
Air
Parallel flow
Temperature
2008

Predicted performance of in-duct UVGI systems under variable operating conditions

Lau, J., Bahnfleth, W. P. & Freihaut, J. D., Dec 1 2008, In : IAQ Conference.

Research output: Contribution to journalConference article

Ducts
Vapor Pressure
Electric lamps
Air
Irradiation
8 Citations (Scopus)

Ultraviolet germicidal irradiation: Current best practices

Martin, S. B., Dunn, C., Freihaut, J. D., Bahnfleth, W. P., Lau, J. & Nedeljkovic-Davidovic, A., Aug 1 2008, In : ASHRAE Journal. 50, 8

Research output: Contribution to journalArticle

Irradiation
Wavelength
Microorganisms
Electromagnetic waves
2007
2 Citations (Scopus)

Estimating the effects of ambient conditions and aging on the performance of UVGI air cleaners

Lau, J., Bahnfleth, W. & Freihaut, J., 2007, IAQVEC 2007 Proceedings - 6th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings: Sustainable Built Environment. Vol. 2. p. 557-564 8 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Air cleaners
Electric lamps
Aging of materials
Irradiation
Systems analysis
49 Citations (Scopus)

Floor-supply displacement ventilation for workshops

Lau, J. & Chen, Q., Apr 1 2007, In : Building and Environment. 42, 4, p. 1718-1730 13 p.

Research output: Contribution to journalArticle

computational fluid dynamics
Ventilation
ventilation
supply
Computational fluid dynamics
2006
21 Citations (Scopus)

Energy analysis for workshops with floor-supply displacement ventilation under the U.S. climates

Lau, J. & Chen, Q., Oct 1 2006, In : Energy and Buildings. 38, 10, p. 1212-1219 8 p.

Research output: Contribution to journalArticle

Ventilation
Cooling
Thermal comfort
Air quality
Fans
2003
27 Citations (Scopus)

Measurement and CFD simulation of the temperature stratification in an atrium using a floor level air supply method

Lau, J. & Niu, J. L., Jan 1 2003, In : Indoor and Built Environment. 12, 4, p. 265-280 16 p.

Research output: Contribution to journalArticle

Hydrodynamics
Air
Temperature
Hot Temperature
Lighting