Hybrid geothermal system considerations

Install a hybrid geothermal heat pump system and reduce the cost of implementing geothermal heating and cooling on your building project. A hybrid system reduces the peak capacity of your ground loop, letting you install a smaller, less expensive ground heat exchanger.

08/29/2011


The Energy Center of Wisconsin with assistance from the University of Wisconsin Solar Energy Laboratory collected a year of operating data on three working hybrid system installations to analyze the economic and environmental impact of the hybrid approach and to compare it to other HVAC system designs. This data was used to investigate what contributes to an effective hybrid design and to validate energy models of these systems.

The study was funded by the United States Department of Energy, Alliant Energy, and Madison Gas and Electric. As a result of this project the Energy Center developed documents and tools for HVAC system designers to use, including a freeware version of their model, to assess the benefits of applying the geothermal hybrid approach on building projects. 

Free software models hybrid geothermal systems

A new tool developed by the Energy Center and UW Solar Energy Lab fills a gap for engineers and designers by modeling hybrid systems that can lower the up-front costs of geothermal. The free modeling tool can be used for the following:

  • Determine how much money a building owner can save by choosing a hybrid geothermal system.
  • Select optimal sizes for the equipment in a hybrid system.
  • Compare different hybrid geothermal approaches in terms of energy and economics for a given building project.
  • Analyze the effects of different control strategies for your geothermal or hybrid system.

- Edited by Chris Vavra, Consulting-Specifying Engineer, www.csemag.com 



No comments
Consulting-Specifying Engineer's Product of the Year (POY) contest is the premier award for new products in the HVAC, fire, electrical, and...
Consulting-Specifying Engineer magazine is dedicated to encouraging and recognizing the most talented young individuals...
The MEP Giants program lists the top mechanical, electrical, plumbing, and fire protection engineering firms in the United States.
2014 Product of the Year finalists: Vote now; Boiler systems; Indirect cooling; Integrating lighting, HVAC
High-performance buildings; Building envelope and integration; Electrical, HVAC system integration; Smoke control systems; Using BAS for M&V
Pressure piping systems: Designing with ASME; Lab ventilation; Lighting controls; Reduce energy use with VFDs
Case Study Database

Case Study Database

Get more exposure for your case study by uploading it to the Consulting-Specifying Engineer case study database, where end-users can identify relevant solutions and explore what the experts are doing to effectively implement a variety of technology and productivity related projects.

These case studies provide examples of how knowledgeable solution providers have used technology, processes and people to create effective and successful implementations in real-world situations. Case studies can be completed by filling out a simple online form where you can outline the project title, abstract, and full story in 1500 words or less; upload photos, videos and a logo.

Click here to visit the Case Study Database and upload your case study.

Protecting standby generators for mission critical facilities; Selecting energy-efficient transformers; Integrating power monitoring systems; Mitigating harmonics in electrical systems
Commissioning electrical systems in mission critical facilities; Anticipating the Smart Grid; Mitigating arc flash hazards in medium-voltage switchgear; Comparing generator sizing software
Integrating BAS, electrical systems; Electrical system flexibility; Hospital electrical distribution; Electrical system grounding
As brand protection manager for Eaton’s Electrical Sector, Tom Grace oversees counterfeit awareness...
Amara Rozgus is chief editor and content manager of Consulting-Specifier Engineer magazine.
IEEE power industry experts bring their combined experience in the electrical power industry...
Michael Heinsdorf, P.E., LEED AP, CDT is an Engineering Specification Writer at ARCOM MasterSpec.