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Announcements Final Project Submission Tuesday, May 12th (anytime)

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Presentation on theme: "Announcements Final Project Submission Tuesday, May 12th (anytime)"— Presentation transcript:

1 Announcements Final Project Submission Tuesday, May 12th (anytime)
Project presentation Wednesday, May 13th, 10 am - field trip at noon (same day) ?

2 Project Presentation Format and location Power Point
5 minutes presentation minutes for questions I will you the classroom Power Point Approximately 5-6 slides (a minute per slide) Problem introduction Model development - specific problem Results Discussion / Summary me or upload the file before 10 am on Wednesday, May 13th

3 Objectives Discuss Review the class material
Low temperature energy systems Geothermal system Review the class material - Course evaluation

4 Low temperature energy systems
Waist heat is part of almost every CHP Many new micro CHP system use Stirling engine

5 Stirling cycle Closed Cycle Engine No phase change
Working fluid: air, hydrogen, or helium

6 Stirling engine Theoretical efficiency of up to 25% (for 500ºC)
Real efficiency in residential application between 6-8%

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

8 Ground source heating / cooling

9 Closed loop systems Vertical Horizontal

10 Installation Mixing grout Installing vertical loop

11 Horizontal loop You need space Depth???

12 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

13 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

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

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

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

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

18 Dynamic Test

19 Impact of soil and grout

20 Impact of operation temperature
EFT- entering fluid temperatures

21 Soil saturation issue EFT Entering Fluid Temperature

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

23 Indoor Units

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

25 Design tool Also: eQUEST and EnergyPlus!!!

26 Course Summary Course Objectives:
Learn about advanced building HVAC 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 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. Combined heat and power systems 8. Systems integration and control


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