Day 2 – Wednesday, February 22, 2017

High Performance Systems

8:30–10:00
High-Performance Mechanical Systems for High-Performance Enclosures
Patrick Huelman, University of Minnesota
Harborside 203

This session will be constructed around building science principles and current technology applications for robust, high-performance homes that go well beyond codes for superior comfort, efficiency, durability, and indoor air quality. High-perfromance enclosures have significantly changed the demands on the mechanical systems. We will begin with a short review of the critical shortcomings of our current mechanical systems in delivering consistent and persistent performance. Then we will zero in on the design and delivery of systems-based, best-practice solutions for heating, cooling, dehumidification, filtration, ventilation, hot water, and make-up air for high-performance zero energy ready homes.

10:30–12:00
Condensing Boiler Optimization
Ben Schoenbauer, Center for Energy and Environment (CEE)
Dave Bohac, Center for Energy and Environment (CEE)
Rebecca Olson, Neighborhood Energy Connection
Harborside 203

This session is an update for an ongoing conservation and research development grant project studying residential condensing boiler operation and optimization. The presentation will report on existing boiler installations, optimization and tune-up potential, as well as new quality installations that ensure optimal boiler performance. Our goal is to understand how condensing boilers are being installed and set up and to identify methods for optimizing performance. This presentation will focus on the performance of over 15 new and existing condensing boilers and will include best practices for installation, sizing, integration with existing radiators and emitters, tune-ups and ongoing maintenance and the impact of these practices on performance.

1:00–2:30
Lessons Learned from New Energy Code Testing
Ross Anderson, The Energy Network
Harborside 203

This session will give an overview of the Minnesota Energy Code and the testing required to pass code. Over the past year, Ross Anderson has worked with several builders and HVAC contractors to help them understand what it takes to pass the new testing requirements under the new Minnesota code. He will include examples of air sealing methods that have worked and some that have not. In addition, a detailed explanation will be given focusing on how to perform the testing that is required for both the home and its ductwork.

3:00–4:30
Emerging Technologies for Cold Weather Residential Heating
Josh Quinnell, Center for Energy and Environment (CEE)
Ben Schoenbauer, Center for Energy and Environment (CEE)
Harborside 203

This session will update research projects on two emerging technologies focusing on improving residential space heating with forced-air systems. Discussion will cover installation, operation, and energy savings based on preliminary field data from occupied Minnesota homes. First, the Transport Membrane Humidifier (TMH) improves the efficiency of standard residential furnaces. TMH saves energy by recovering water vapor and waste heat from flue gas to preheat and humidify inside air. Second, advancements in cold-climate air source heat pumps (ASHP) focusing on ductless heat pump technology and improvements on the typical operating practices to improve the cold climate heating performance of these systems.

Pat Huelman picture
Patrick Huelman

Pat Huelman is an Associate Extension Professor in Energy and Building Systems with the University of Minnesota's Department of Bioproducts and Biosystems Engineering and serves as Coordinator of the Cold Climate Housing Program with University of Minnesota Extension. He is a lead faculty member for the Building Science and Technology undergraduate degree program and a principal investigator for hygrothermal testing at the Cloquet Residential Research Facility. Currently, Pat is the Project Lead for NorthernSTAR, one of the Department of Energy’s Building America teams.

Pat has been extremely active in professional education for the home building industry and is nationally recognized for his “systems approach” to improving overall home performance. Pat’s long-term focus has been on heat, air, and moisture movement in buildings and his primary expertise is in building systems and technologies that will provide energy efficiency, long-term durability, and healthy indoor air for homes. With more than 30 years in the field, Pat brings extensive experience and expertise in energy-efficient design and construction, innovative building systems, moisture management strategies, mechanical ventilation, and residential indoor air quality.

Beyond Code Programs that Give You and Your Customer the Edge Part 1 of 4
February 21, 2017 8:30‐10:00 a.m.

Beyond Code Programs that Give You and Your Customer the Edge Part 2 of 4
February 21, 2017 10:30 a.m.‐12:00 p.m.

Beyond Code Programs that Give You and Your Customer the Edge Part 3 of 4
February 21, 2017 1:00‐2:30 p.m.

Beyond Code Programs that Give You and Your Customer the Edge Part 4 of 4
February 21, 2017 3:00‐4:30 p.m.

High-Performance Mechanical Systems for High-Performance Enclosures
February 22, 2017 8:30‐10:00 a.m.

Ben Schoenbauer picture
Ben Schoenbauer

Ben Schoenbauer is a Senior Research Engineer and has been with CEE since 2008. At CEE, Ben conducts research on new and innovative technologies and ideas dealing with residential and commercial energy efficiency. This work includes identifying new opportunities, conducting research, identifying funding opportunities and disseminating the results. Ben’s areas of focus include water heater performance, service water heating, and residential HVAC systems. Ben has a Master’s degree in Mechanical Engineering from the University of Minnesota and a Bachelor’s degree in Physics from Saint John’s University.

Condensing Boiler Optimization
February 22, 2017 10:30 a.m.‐12:00 p.m.

Emerging Technologies for Cold Weather Residential Heating
February 22, 2017 3:00–4:30 p.m.

Rebecca Olson picture
Rebecca Olson

Rebecca Olson joined the NEC in 2012 as the residential energy program manager. She oversees all aspects of the residential energy programs including the Home Energy Squad, NEC’s Energy Audit programs and our New Construction Energy Consulting programs. Before joining the NEC, she worked as an energy auditor for 3 years and was the director of a low-income weatherization program for 3 years. She is a certified BPI Building Analyst and a BPI Envelope Professional. She is also a trainer and test proctor for each of these certifications.

Rebecca has served as president and secretary of the Minnesota Building Performance Association and is the current chair of the Building Performance Institute’s Standards Technical Committee.

Condensing Boiler Optimization
February 22, 2017 10:30 a.m.‐12:00 p.m.

Ross Anderson

Ross Anderson has worked in the building industry for ten plus years as a Builder Project Manager. As a RESNET rater Ross started working for Residential Science Resources in 2009 as a Builder and Rater Trainer, specializing in the ENERGY STAR® (for homes) Program. Ross was one of the main Technical Advisers for the Builders Association of the Twin Cities Green Path Program which was adopted in 2011. Ross is the current President of the Minnesota Building Performance Ass. Ross recently became a partner at The Energy Network Rating new construction homes and Helping builders with their code testing issues.

Lessons Learned from New Energy Code Testing
February 22, 2017 1:00–2:30 p.m.

Josh Quinnell picture
Josh Quinnell

Josh Quinnell is a Senior Research Engineer in the Innovation Exchange at the Center for Energy and Environment in Minneapolis, MN. Josh has 10 years of research experience in building sciences, solar energy, and transport phenomena. Josh has worked on projects with NREL, NASA, and the International Energy Agency. Currently Josh is working on building energy efficiency projects including commercial and institutional HVAC duct leakage, optimization of energy recovery ventilation (ERV) systems, residential garage contaminant transport, small data center energy efficiency, and residential furnace efficiency retrofits. Prior to CEE Josh spent time at ZAE Bayern in Germany and at the University of Minnesota researching thermochemical energy storage cycles, Stirling engines, heat & mass transfer, and the net zero ICON Solar house. Josh obtained his M.S. and Ph.D. in Mechanical Engineering from the University of Minnesota.

Emerging Technologies for Cold Weather Residential Heating
February 22, 2017 3:00–4:30 p.m.

David Bohac picture
Dave Bohac

Dave is the Director of Research with the Center for Energy and Environment. He has worked there since 1988 and has over 30 years experience in energy efficiency and indoor air quality in commercial and residential buildings. He has been the manager of a variety of applied research, energy audit, and program development projects. His research includes measurements of commercial building envelope and duct sealing, aerosol envelope sealing and ventilation improvements for multifamily units, and the efficiency of tankless water heaters and combination systems in houses. He has performed assessments of secondhand exposure smoke in cars, apartments, outdoor patios, and bars & restaurants. He was the manager of the CEE’s Indoor Air Quality group for the Minneapolis-St. Paul Residential Sound Insulation Program. He holds a Masters degree in Engineering from Princeton University, a Bachelors degree in Mechanical Engineering from the University of California, Davis, and is a registered Professional Engineer.

Aerosols - Seek and Seal Envelope Leaks
February 22, 2017 1:00‐2:30 p.m.