Dr
Dr. Iain Stuart Walker
Residential Building Systems Group Leader, Lawrence Berkeley National Laboratory
MS 90-3074, 1 Cyclotron Road, Berkeley, CA 94720, USA. iswalker@ 510 486 4692
EDUCATION
1993 : Ph.D., 1989 M.Sc., and 1986 B.Sc in Mechanical Engineering, University of Alberta, Edmonton, Alberta, Canada.
EXPERIENCE
Scientist (1995 to Present). Lawrence Berkeley National Laboratory, Berkeley, CA 94720.
Group leader for the Residential Building Systems Group (RBS) at LBNL with annual research funding of about $2 million. Current research topics: residential retrofits, zero energy home design and construction, home electrification, energy efficient ventilation, indoor air quality, energy and IAQ simulations of buildings and HVAC systems, building controls and interfaces, humidity control, energy efficiency program planning, and thermal and moisture performance of building buffer spaces. This includes development of field and laboratory test methods, developing innovative ways to improve energy efficiency and comfort of residences, and leading the development of industry codes and standards.
Other Experience
Buildings Energy Consultant (1993-present).
Research Associate (1993-1995). Building Performance Laboratory, Institute for Research in Construction, National Research Council Canada, Ottawa, Ontario, Canada.
Visiting Scientist (1992). Air Infiltration and Ventilation Centre, Coventry, England.
Academic Awards
LBNL Directors Award for Societal Impact (2019), Service to ASHRAE Research Award (2015), ASHRAE Fellow (2012), ASHRAE Best Paper Awards (2009 & 2014), ASHRAE Distinguished Service Award (2008), University of Alberta Alumni Association Horizon Award (2003), 15th AIVC conference Best Paper Award (1994), R.R. Gilpin Memorial Award for Excellence in Research, University of Alberta (1992).
PROFESSIONAL ACTIVITIES
Member of ASHRAE: Chair of ASHRAE Standard 62.2 “Ventilation Acceptable Indoor Air Quality for Low-Rise Residential Buildings”. ASHRAE IAQ Position Document committee.
Member of ASTM: Task Group Chair of the following ASTM standards: E779 Standard test method for Determining Air Leakage Rate by Fan Pressurization, E1554 Determining External Air Leakage of Air Distribution Systems by Fan Pressurization. E3087 Measuring Capture Efficiency of Domestic range Hoods.
Member of Canadian Standards Association: Committee member of Standard on Airtightness Testing (CAN/CGSB 149).
Member of RESNET Std. 380 “Standard for Testing Air Leakage of Building Enclosures, Air Leakage of Duct Systems, and Airflow of Whole-House Mechanical Ventilation Systems”.
SELECTED PUBLICATIONS
Zhao, H., Chan. W., Cohn, S., Delp, W., Walker, I. and Singer, B. (2020). Indoor Air Quality in New and Renovated Low-Income Apartments with Mechanical Ventilation and Gas Cooking In California. Indoor Air . doi: 10.1111/INA.12764
Young, M., Less, B.D., Dutton, S.M., Walker, I.S., Sherman, M.H. and Clark, J.D. (2020). Assessment of peak power demand reduction available via modulation of building ventilation systems. Energy and Buildings. 10.1016/j.enbuild.2020.109867
Walker,I.S., Delp, W.W. and Singer, B.C. (2019). Are Low-Cost Sensors Good Enough for IAQ Controls? REHVA Journal, Vol. 56, No. 1, pp. 6-12. The REHVA European HVAC Journal. Brussels, Belgium. rehva.eu
Less, B., Walker, I., Slack, J. and Levinson, R. (2018). Measured Thermal and Moisture Performance of Air Sealed and Insulated Attics with Porous Insulation. Proc. ACEEE Summer Study 2018. ACEEE Washington, DC.
Kim, Y-S., Walker, I.S. and Delp, W.W. (2018). Development of a Standard Capture Efficiency Test Method for Residential Kitchen Ventilation. Science and Technology for the Built Environment. Vol. 24, No. 2.
Guyot, G., Sherman, M.H. and Walker, I.S. (2018). Smart ventilation energy and indoor air quality performance in residential buildings: a review. Energy and Buildings. Vol. 163, pp. 416-430.
Less, B.D. and Walker, I.S. (2016) “Smart Ventilation Control of Indoor Humidity in High Performance Homes in Humid U.S. Climates”, Proc. ASHRAE/DOE/BTECC Thermal Performance of the Exterior Envelopes of Buildings Conference XIII, Clearwater Beach, FL. ASHRAE, Atlanta, GA.
Walker, I.S., Sherman, M.H. and Francisco, P.F. (2016). “Duct Leakage Repeatability Testing”. Thermal Performance of the Exterior Envelopes of Buildings XIII, ASHRAE/DOE/BTECC.
Singer BC, Delp WW, Black DR, Walker IS. (2016). Measured performance of filtration and ventilation systems for fine and ultrafine particles and ozone in a modern California house. Indoor Air. doi: 10.1111/ina.12359.
Hurel, N., Sherman, M. H. and Walker, I.S. (2016). Sub-additivity in combining infiltration with mechanical ventilation. Building and Environment 98. 89-97.
Chan, W.R., Walker, I.S. and Sherman, M.H. (2015). Durable Airtightness in Single-Family Dwellings – Field Measurements and Analysis. International Journal of Ventilation, Vol. 14, No. 1, pp. 27-38.
Turner, W.J.N., Walker, I.S. and Roux, J. (2015). Peak Load Reductions: Electric Load Shifting with Mechanical Pre-Cooling of Residential Buildings with Low Thermal Mass. Energy. DOI: 10.1016/j.energy.2015.02.011
Less, B.D., Singer, B., Walker, I.S. and Mullen, N. (2015). Indoor Air Quality in 24 California Residences Designed As High Performance Green Homes. HVAC&R Research. Science and Technology for the Built Environment. 21, 14-24. Doi: 10.1080/10789669.2014.961850.
Sherman, M.H., Walker, I.S and Lunden, M.L., (2014). Uncertainties in Air Exchange using Continuous-Injections, Long-Term Sampling Tracer-Gas Methods. International Journal of Ventilation, Vol. 13, No. 1. June 2014.
Walker, I.S., Dickerhoff, D.J, Faulkner, D. and Turner, W.J.N. (2013). Energy Implications of In-Line Filtration in California Homes. ASHRAE Transactions 2013 Vol. 119, part 2, ASHRAE Atlanta, GA.
Walker, I.S., Sherman, M.H., Joh, J. and Chan, W.R. (2013). Applying Large Datasets to Developing a Better Understanding of Air Leakage Measurement in Homes. International Journal of Ventilation, Vol. 11, No. 4, pp. 323-338. March 2013.
Sherman, M.H., Walker, I.S. and Logue, J.M (2012). “Equivalence in Ventilation and Indoor Air Quality”. HVAC&R Research, 18:4, 760-773.
Sherman, M.H. and Walker, I.S. (2011), “Meeting Residential Ventilation Standards Through Dynamic Control of Ventilation Systems”. Energy and Buildings, Vol. 43. ,pp. 1904-1912. Elsevier.
Sherman, M.H. and Walker, I.S. (2010). “Impacts of Mixing on Acceptable Indoor Air Quality in Homes”. ASHRAE HVAC&R Research Journal. Vol. 16., Number 3. May 2010. ASHRAE, Atlanta, GA.
Walker, I.S. and Dickerhoff, D.J. (2008). “Field and Laboratory Evaluation of a new ramping technique for duct leakage testing”. ASHRAE Transactions, June 2008, Vol. 114, Pt. 2, pp. 494-504.
Walker, I.S., Forest, T.W. and Wilson, D.J. (2005), “An Attic-Interior Infiltration and Interzone Transport Model of a House”, Building and Environment, Vol. 40, Issue 5, pp. 701-718, Elsevier Science Ltd., Pergamon Press, U.K.
Walker, I.S., and Forest, T.W., (1995), "Field Measurements of Ventilation Rates in Attics", Building and Environment, Vol. 30., No. 3, pp. 333-347, Elsevier Science Ltd., Pergamon Press, U.K.
Walker, I.S., and Wilson, D.J., (1993), "Evaluating Models for Superposition of Wind and Stack Effects in Air Infiltration", Building and Environment, Vol.28 No.2, pp. 201-210, Elsevier Science Ltd., Pergamon Press, U.K.
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