Geothermal Heat Pump and Energy Recovery Applications
ASHRAE Technical Committee 6.8

Upcoming TC Meetings

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 2024 ASHRAE WINTER CONFERENCE

JANUARY 20-24, 2024    -CHICAGO, IL

REGISTER HERE 

PENDING MEETINGS - TAMPA

 

 

TC 6.8 Research Committee Meeting (Virtual Only)

Wednesday, June 14 1:00 PM – 2:30 PM EDT

Chair: Harrison Skye

Location: WebEx Meeting Format: Virtual

This meeting will take place virtually. Virtual attendees can click "Enter Meeting" under Resources below to join the meeting on the noted date and time. 
Meeting number: 2347 545 8562
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TC 6.8 Ground Source Heat-Pumps Programs, Education and Energy Recovery

Sunday, June 25 4:00 PM – 6:00 PM EDT

Chair: Howard Newton 

Tampa Marriott Waterside, Meeting Room 9 (3)

Session Type: Technical Committee 

Location: Tampa Marriott Waterside, Meeting Room 9 (3)

Meeting Format: Hybrid

This meeting will take place in Tampa. Virtual attendees can click "Enter Meeting" under Resources below to join the meeting on the noted date and time. 
Meeting number: 2330 386 7449
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TC 6.8 Ground-Source Heat Pumps And Energy Recovery

Tuesday, June 27 3:00 PM – 5:00 PM EDT

Chair: Howard Newton

Tampa Marriott Waterside, Florida Salon VI (2)

Session Type: Technical Committee 

Location: Tampa Marriott Waterside, Florida Salon VI (2) 

Meeting Format: Hybrid

This meeting will take place in Tampa. Virtual attendees can click "Enter Meeting" under Resources below to join the meeting on the noted date and time. All times are listed in Eastern Time (ET).
Meeting number: 2342 840 6810
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Host key: 863949
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Access code: 2342 840 6810
Host PIN: 8173

GEOTHERMAL SEMINARS 

 

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    Seminar 63: LIVESTREAM: Effective Cold Climate Decarbonization Applications with Ground Source Heat Pumps

    Wednesday, June 28 9:45 AM – 10:45 AM EDT

    Chair:  Lisa Meline, P. E.

    Session Type: Seminar Program Level: Intermediate Program Track: HVAC&R Systems and Equipment Meeting Format: Livestream

    Summary:

    Ground Source Heat Pumps (GSHPs) are well suited to provide high efficiencies for effective decarbonization in cold climates eliminating fossil fuel use for space and water heating.  A GSHP case study is highlighted of a four-story mixed use apartment complex, served by a vertical ground heat exchanger and a 248-kW solar array.  A second case study features a seasonal solar thermal energy storage system installed to balance a vertical loop system. A third presentation demonstrates methods for determining GSHP CO2 savings compared to fossil fuel furnaces in two states with different electric utility C02/kWh generation rates.

    Seminar 63: Presentation 1: Applying Ground Source Heat Pumps to Decarbonize a New Multi-Family Building in the Hudson Valley

    Wednesday, June 28 9:45 AM – 10:05 AM EDT

    Applying Ground Source Heat Pumps to Decarbonize a New Multi-Family Building in the Hudson Valley

    Presenting Author: Hugh Henderson, P.E., Owahgena Consulting, Cazenovia, NY, USA

     

    A new 63,300 sq. ft. building with 46 apartments and 6 retail spaces uses a ground loop to meet its space conditioning needs as well as provide water heating. The high efficiency building envelope reduces space heating loads so that only small water source heat pumps were required in each space. The ground loop heat exchanger sized for space cooling loads could also easily meet the water heating loads – eliminating the need to keep a fossil fuel boiler for DHW loads. Detailed field monitoring in this building confirmed the expected benefits and fossil fuel reductions.

    Seminar 63: Presentation 2: Seasonal Solar Thermal Energy Storage for Balancing Cold Climate GSHP Systems

    Wednesday, June 28 10:05 AM – 10:25 AM EDT

    Seasonal Solar Thermal Energy Storage for Balancing Cold Climate GSHP Systems

    Presenting Author: Daniel Booy, P.Eng., Altum Engineering Ltd., Courtenay, BC, Canada

     

    This case study examines the thermal response of a frozen GHX when a low-cost HDPE solar collector array was used to reheat the ground. The system was installed in 2018 after the minimum heating season temperature of the GHX became too low, which rendered the GSHP system inoperable. The control system that was used for the integration of the solar panels and the GHX has remote connectivity and data logging capabilities. The monitoring and data acquisition enabled optimization of the control algorithms to maximize the reheating and ensure that the pump energy use was optimized.

     

    Seminar 13: Presentation 2: Resilient Cooling through Geothermal District Energy Systems

    Sunday, June 25 11:20 AM – 11:40 AM EDT

    Resilient Cooling through Geothermal District Energy Systems

    Presenting Author: Michael Wetter, Ph.D., Lawrence Berkeley Lab, Berkeley, CA, USA

     

    Geothermal district energy systems are well suited to decarbonize heating and to provide efficient cooling. However, little is understood about how they should be designed, sized and operated to provide compressor-less cooling during heat waves. We show how Modelica simulations of geothermal, HVAC and controls, coupled to EnergyPlus envelope via Spawn, can be used to design and assess the performance of such systems for an office district in the Chicago climate. We show that indoor air conditions are maintained in a tolerable range for most rooms, while electricity consumption is reduced by a factor of two.

     

     

 

 

 

 

Committee Chair

Mr Howard W Newton
TC0608@ashrae.net

Committee Scope

TC 6.8 is concerned with all equipment and systems which collect, store and utilize geothermal energy or fluids for the purpose of heating and cooling, and with the development and application of heat pump systems and heat recovery by refrigeration cycles including system design, operation, and performance (product design of unitary heat pumps and equipment components is excluded).

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Upcoming Society Conferences

ASHRAE 2023 Annual Conference
June 24-28, 2023
Tampa, FL

Kirk T Mescher Award

This award is in memory of Kirk T Mescher, PE, an engineer who specialized in HVAC but whose real forte was innovation. Kirk’s design ideas are clever in and of themselves but the courage to implement them in projects and freely share the results underscores his exemplary service to our industry. Grants are awarded for an idea in GSHP, HVAC, or an elegant way to be more energy efficient.   Award information - background - 2022 application.