1. Friday 8 am St. Edward's University
Reminder
Friday 8 am St. Edward's University
We will meet at 8:00 am at the south entrance of the new Science building (visitor parking is on the east side outside of the garage which is on the east side of the softball field). 

2. Lecture Objectives: Summarize energy measurement
Review geothermal systems
Summarize the course and
courser evaluation

3. Thermal energy measuring technique for energy management systems
Measuring of temperatures
Water, glycol, steam, air,….
Measuring of flow rates
same list of fluid
Issues:
Accuracy
Frequency
Time integration

4. Ground source heating / cooling vs. geothermal
Heating and cooling by heat pump
Mostly EE generation or CHP

5. Ground source heating / cooling

6. Closed loop systems Vertical Horizontal

7. Installation
Mixing grout
Installing vertical loop

8. Horizontal loop
You need space
Depth???

9. Good / Bad Good Energy efficiency Low maintenance Water heating
No auxiliary heat
No outdoor equipment ….
Bad
First (capital) cost
Limited qualified designers
Geographically limited contractors

10. Decision three YES NO Unique Opportunity (gray water, etc.)
Groundwater for open loop,
existing well use or need
Hard rock,
good quality groundwater
Enough land for horizontal loop,
good soil for excavation
Good conditions for pond loop,
interested owner
Good conditions for vertical loop
Other
HVAC System
Hybrid
Evaluate resource
obtain permits, agreements, etc.
Good disposal
options
Aquifer test,
groundwater chemistry
Evaluate
standing column well
Pond thermal
evaluation
Test bores,
Thermal conductivity test
DESIGN
DEVELOPMENT
YES NO
Annual unbalanced loads,
AND/OR thermal storage opportunity
geology.utah.gov/emp/geothermal/ugwg/.../ppt/Chiasson0306_4.ppt

11. It is good if you have a good dissipation source
However think about environmental issues!!!

12. Vertical loops (the goal is to hit ground water)
Geo-Heat Center, Oregon Institute of Technology

13. Thermal Conductivity Test
An in-situ thermal conductivity test is need for every larger project

14. Thermal conductivity test ASHRAE 1118 TRP “Methods for Determining Soil and Rock Formation Thermal Properties from Field Tests
borehole temperature probe

15. Dynamic Test

16. Impact of soil and grout

17. Impact of operation temperature

18. Soil saturation issue
EFT Entering Fluid Temperature

19. Cost of a residential ground source system (it does not include furnace and ducts)
Cost is very location dependent !

20. Indoor Units

21. References
ASHRAE
Ground-Source Geothermal Systems for Commercial and Institutional Buildings.
ASHRAE ASHRAE Hnadbook: HVAC Applications, Chapter 32
International Ground Source Heat Pump Association -
…..

22. Design tool
Also: eQUEST and EnergyPlus!!!

23. Course Summary Course Objectives:
Learn about advanced building energy and environmental control systems.
Obtain knowledge about district cooling and heating systems.
Gain the skills and tools necessary to evaluate integration of sustainable energy production systems to a given building site.
Study application of combined heat and power systems in a specific building or group of buildings.
Conduct thermal, hydraulic and economic modeling of integrated building energy systems for planning and design.
Course Topics:
Class intro and HVAC systems review
Building ventilation heat recovery systems
Thermal (solar and waste heat) powered desiccant systems
4. Centralized (compressor and sorption based) cooling systems
5. Centralized heating systems
6. District heating and cooling distribution systems
7. Geothermal buildings systems
8. Combined heat and power systems
9. Systems integration and control