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 Expert  107673

Expert in Energy-Efficient Buildings

Available for your Consulting and Expert Witness Needs

California (CA)
Education Work History Career AccomplishmentsPublicationsConsulting Services Expert Witness

Summary of Expertise:

Listed with other top experts in: 

ENERGY-EFFICIENT BUILDINGS AND SYSTEMS; ENERGY ECONOMICS FOR BUILDINGS; ENERGY-EFFICIENT WATER HEATING. Most of Expert's career since 1974 has involved the analysis, development, design, and monitoring of energy-saving technologies for buildings. This work has included key systems for improving the building "envelope" (foundations, floors, walls, roofs, windows), heating and cooling systems, and water heating systems. While his concentration has been on residential construction, he also has expertise in non-residential building construction and energy systems. Expert has completed "energy-efficiency measure" (EEM) packaging projects, which includes assembling full sets of EEM's for sample buildings, for major electric utilities.

RESIDENTIAL HEAT PUMP SYSTEMS. Residential heat pumps have been a primary focus of Expert's work since 1975. This work has included detailed hourly simulation of conventional and advanced heat pumps, development of a three-function thermal storage unit now manufactured by Phoenix Heat Pump Systems, development and monitoring of an off-peak solar-assisted heat pump system, design of ground-coupled "Geo Exchange" heat pump systems, evaluation of heat pump control strategies and thermostats, monitoring of advanced variable-speed and multi-function heat pumps, and evaluation of innovative combined appliance heat pumps, including water heating and refrigeration features.

RADIANT HEATING AND COOLING SYSTEMS; SURFACE SPACE COOLING SYSTEM. Radiant surface space conditioning systems have been one of Expert's major professional interests since 1980. Relevant activities in this area include extensive monitoring of radiant heating systems, development of two patented radiant heating and cooling systems for raised floor construction, design of radiant heating and cooling systems for more than 40 residential and commercial buildings, development and presentation of radiant heating workshops in more than 30 cities across North America, and organization of the Hydronic Radiant Heating Association, which merged with the Hydronics Institute in 1989.

COMBINED ROOFING AND COOLING SYSTEMS. Development of combined roofing/cooling systems for dry climate commercial buildings has been one of Expert's primary work areas since 1982. These systems, now coming into use, use the roof surface to discharge heat to the cool night sky, storing chilled water for subsequent use to cool the building. Funding from the California Energy Commission assisted him with development of WhiteCap, a system variation now marketed by Roof Science Corporation of Davis, California. WhiteCap has recently received additional funding under the U.S. Energy-Related Inventions Program.

SOLAR HEATING SYSTEMS. Expert's career focused upon solar heating systems from 1974 through 1983, with reduced but continuing involvement since that time. A major goal of his solar work has been to integrate solar collection and storage components with the building, to reduce costs and visual impact. His work with "attic collectors" and "membrane-lined storage" systems has led to the installation of many innovative, low cost systems, and has included the design of more than 600 solar-heated homes and commercial buildings. In addition, he has managed the development of an advanced "freezable thermosiphon" solar water heater, under contract with the U.S. National Renewable Energy Laboratory (HREL) and the California Energy Commission.


building thermal envelope


combined roofing/cooling system


cooling system


energy-efficient building


energy-efficient water heating


heat pump


radiant heating


radiant heating device


radiant surface space heating system


residential heat pump system


solar space heating


solar space heating system


buidling cooling system


construction defect


residential building construction


energy efficient building design

Show Secondary and Basic Areas of Expertise
Expert may consult nationally and internationally, and is also local to the following cities: San Jose, California;  San Francisco, California;  Sacramento, California;  Oakland, California;  Stockton, California;  Fremont, California;  Modesto, California;  Santa Rosa, California;  Hayward, California;  and Sunnyvale, California.

Year   Degree   Subject   Institution  
1968   MS   Mechanical Engineering   Stanford University  
1967   BS   Mechanical Engineering   West Virginia University  
1965   BA   American Studies   Amherst College  

Work History:
Years   Employer   Title  

1997 to






1981 to 1997






1979 to 1981


Solar Concept Development Company


Owner and Manager


1971 to 1979


Construction Management Department, College of Engineering, University of Nebraska


Associate Professor


Career Accomplishments:

Expert is a member of ASHRAE and was past Chairman of its TC 6.5 (Radiant Space Heating and Cooling) Committee from 1988 to 1990.


He is a registered Professional Engineer in California.


One of his projects received a Federal Energy Administration Award in 1976.

Publications and Patents Summary

Expert has presented more than 150 special lectures, workshops, and technical papers since 1974. He holds 15 US patents.

Consulting Services:
Recent Client Requests:
  • Expert in Controls for consulting on heating and cooling systems.
  • "Thermosiphon expert" for consulting on Thermosiphon Solar System.
Click the green button above to contact Expert for a free initial screening call regarding your expert consulting needs.  Expert is available for consulting to corporate, legal and government clients.  Remember, your initial screening call to speak with Expert is free.

Expert Witness:
Click the green button above to contact Expert for a free initial screening call regarding expert testimony, litigation consulting and support, forensic services, or any related expert witness services.  A few litigation needs include product liability, personal injury, economic loss, intellectual property (patent, trademark, trade secret, copyright), and insurance matters.  Remember, your initial screening call to speak with Expert is free.

Language Skills:

Additional Skills and Services:
Supplier and Vendor Location and Selection

Expert has experience locating vendors of radiant heating systems and evaporative heating systems. He has access print materials and personal contacts.

Other Skills and Services

He had the lead role in the Nebraska ETV special "Solar Energy Applications."


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