1. Detailed Design Review Solar Thermal Water Heater
Mike Pastore, Evan Baileys, Deven Greenawalt, Alex Slabyk, Sarah Kirk
Mike

2. Agenda BOM Wiring Diagram Plumbing Diagram Test Plans
Engineering Requirements
Pumping Test
Risks
Gantt Chart
Action Items
Issues and Concerns
Mike

3. Full Bill of Materials Mike
The sun shield is not the important, and will only be created if we have enough funding for it.
Reservoir may be able to be rented through FMS rather than purchased

4. Pump Wiring Diagram
Evan

5. Sarah

6. Sarah

7. Plumbing Set-Up
Sarah

8. Added Bleed-Off Assembly
Sarah

9. Proposed System Layout
Evan

10. Flat Plate Collector Information
TitanPower-ALDH29-V2
29 ft2 Flat Plate Collector - V2
TitanPower-A-ALDH-COUPLING-V2
ALDH Series Connector (1 Pc Coupling) 22mm x 22mm
TitanPower-A-ALDH-CAP
ALDH Series End Cap
ConnectMaxx-TPALDH29-2FM-V2
ALDH29 Flush Mounting Kit
Parameter
Value
Dimensions
50” X 85” X 4”
Weight (Full)
122 LBS
Flow Rates
Minimum: 0.17 GPM
Maximum: 0.50 GPM
Stagnation Temperature
392°F
Efficiency
~82% (Based on absorber area)
Deven

11. Testing Plans Battery can provide power for sufficient time
Hook pump to battery and time until battery is dead
Pump flow can be effectively dampened to 0.5gal/min
Use flow meter and Y valves to test pump output
Ability to adjust water inlet temperature
Use Y valve to add cold water to the water input tank to avoid eclipsing max acceptable inlet temperature to pump
Max achievable pump temperature
Run system at SOC with 1 single reservoir for both intake and deposit- graph temp vs time to see peak heating
Time for plate to heat qty X gal of water to temps A,B,C,...
Circulate qty X gal of water through the plate and collect time data on when temperatures A,B,C,... are met
Test Efficiency of Flat Plate
Run the system for 1-6 hr. Collect data for average Tin ,Tamb ,IC, Tinitial, Tfinal, in order to calculate theoretical efficiency and compare to actual efficiency.
Mike-- talked to Dr Thorn, seems to think they’re robust
Each of these can include efficiency metrics, cross checking with theorized values, and repeat verification

12. ERs and Testing
Deven

13. Pump Testing
Iteration 1: Test pumping system (without solar-thermal water heater)
Discoveries:
Piping leaked so hose clamps are needed for a more secure seal.
There was too much back pressure on the pump and a bleed-off assembly is needed to achieve proper plate flow rate with less back pressure on the pump.
High back pressure at low flow causes pump to choke
Iteration 2: Test pumping system again (without solar-thermal water heater)
Hose clamps solved the minor leaks at the hose fitting in question.
Addition of bleed-off assembly before the flow meter allows pump to function properly and provide the correct flow range to the plate
Pump functions normally
0.5 gpm water flow or less can be easily provided to plate
Evan

14. Flow Adjustability Testing
Evan

15. Risks
Alex
Green Cells = New Risks

16. Gantt Chart Blue Colored = Phase 4 Tasks Red Colored = Break
Alex
Blue Colored = Phase 4 Tasks
Red Colored = Break
Orange Colored = MSD II

17. Review Phase IV: Action Item Review
Team Member
Phase IV Contributions
MSD II Predicted Contributions
Deven
Improve/update collector efficiency model. Keep in contact with Dr. Stevens. Ordered parts and updated BOM.
BTU/cost optimization, finalize and implement system temperature gain test.
Sarah
Laid out piping schematic(s) and prepared draft and final designs and helped to develop test plans.
Build/diagnose piping system to implement with the solar-thermal water heater.
Evan
Continue design of support structure. Make final design from preliminary design. Detailed drawings of electrical components.
Build structure for the solar-thermal water heater and pumping system. Test structure support to validate weight capacity.
Alex
Manage risk assessment, and update schedule to include MSD II. Helped develop test plans.
Manage risk assessment, test the battery life and the time it takes for the system to heat x gallons of water.
Mike
Talk to vendors and initiate purchase of pump and flat plate. Develop test plans
Test the water temperature of the system to make sure the desired temperature is achievable. Organize plate testing days with team availability
All

18. Issues & Concerns Pump starts to “choke” 0.6 GPM
Added a bypass valve assembly to reduce flow to collector while also running the pump with decreased backpressure
Plate and cart may be difficult to move around due to length/height/weight and elevator limitations
Alex

19. MSDII Overarching Plans
Plate testing will happen on weather dependent basis
When a nice day arises, we will aim to do testing ASAP
Will derive times where each member is free to sit with plate and test
This may be on days when MSDII class does not meet
Each member will be responsible for the collected and analysis of one of the outlined testing plans
Ensures each member has experience running the plate
Plate operating procedures will be derived in the first week of MSDII
Efficiency testing will happen in different climates
Important to understand the delta between summer and winter performance
Figure out how to flush the plate to eliminate bacteria growth
Plans for plate after MSDII is over
Rich?
Continuation Project?
Tom Kirk?
Mike

20. Field Trip to the collector!
Thanks for listening!
Field Trip to the collector!