Technical Report
Actual Savings and Performance of Natural Gas Instantaneous Water Heaters
To gain a better understanding of in situ performance, 24 natural gas water heaters were installed in ten Minnesota homes, then extensively monitored and tested under an alternating mode test procedure for 15 months.
Date: January 1, 2011 | Author: Ben Schoenbauer, Martha Hewett, Dave Bohac, P.E. | Category: Residential
Technical Report
Change in Indoor Particle Levels After a Smoking Ban in Minnesota Bars and Restaurants
The primary objective of this study was to provide detailed time-of-day and day-of-week secondhand smoke–exposure data for representative bars and restaurants in Minnesota.
Date: December 1, 2010 | Author: Dave Bohac, P.E., Martha Hewett, David Grimsrud | Category: Commercial, Policy, Indoor Air Quality
Technical Report
Actual Savings and Performance of Natural Gas Tankless Water Heaters
This project field tested efficiency improvements and energy savings achieved by replacing standard hot water heaters with tankless models.
Date: August 30, 2010 | Author: Dave Bohac, P.E., Ben Schoenbauer, Martha Hewett, Mary Sue Lobenstein | Category: Residential
Technical Report
Secondhand Smoke Transfer and Reductions by Air Sealing and Ventilation in Multiunit Buildings: PFT and Nicotine Verification
This study was undertaken to quantify bulk air transfer between units and document transfer of Secondhand Smoke species before and after treatments that sealed boundaries between units and provided a minimum amount of continuous exhaust ventilation of each unit.
Date: July 1, 2010 | Author: Dave Bohac, P.E., Martha Hewett, David Grimsrud | Category: Multifamily, Indoor Air Quality
Technical Report
Secondhand Smoke Exposure for Minnesota Bars and Restaurants
Date: June 1, 2010 | Author: Dave Bohac, P.E., Martha Hewett | Category: Indoor Air Quality
Technical Report
Cost-Effective Boiler System Retrofits
The cost of energy is a significant portion of the operating expenses for any commercial building. Yet these same energy expenses are often the single largest controllable cost of operations.
Date: February 1, 2010 | Author: Mary Sue Lobenstein, Martha Hewett | Category: Commercial
Technical Report
Identifying Effective Biomass Strategies: Quantifying Minnesota's Resources and Evaluating Future Opportunities
The profile of bio-power (electricity generated with bio-mass fuels) is rising with America's concerns about the effect of fossil fuels on the environment.
Date: October 1, 2007 | Author: | Category:
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Technical Report
Measured Change in Multifamily Unit Air Leakage and Airflow Due to Air Sealing and Ventilation Treatments
This paper summarizes the results from field studies to evaluate the effectiveness of air sealing and ventilation treatments to reduce environmental tobacco smoke transfer between units.
Date: June 6, 2007 | Author: Dave Bohac, P.E., Jim Fitzgerald, Martha Hewett | Category: Multifamily, Indoor Air Quality
Technical Report
Secondhand Smoke in Apartment Buildings: Renter and Owner or Manager Perspectives
This study explored the views of Minnesota renters and apartment owners or managers about environmental tobacco smoke transfer between units in multifamily buildings and about smoke-free housing.
Date: January 9, 2007 | Author: Martha Hewett | Category:
Technical Report
Indoor Air Quality in Bars and Restaurants Before and After Implementation of Smoke-free Ordinances in Hennepin and Ramsey Counties
Indoor air quality monitoring took place before and after the implementation of smoke-free ordinances that went into effect for Ramsey and Hennepin counties on March 31, 2005.
Date: September 5, 2005 | Author: Dave Bohac, P.E. | Category: Commercial, Indoor Air Quality