Project Overview:

• 15 'SolCan 2101' panels (currently stored at the Bauer Warehouse)
  
• 131 GJ/year
• Goal of no more than 7-8 year payback
• Proposed site: on top of Administration offices of Village 1 complex to pre-heat incoming 10C city water for residential use (cafeteria, showering, etc)
• Contact Dr. Collins for technical questions

To Do:

• Install flow meter to get historical data of hot water usage.
• RETSCREEN analysis with actual variables (find out number of occupants of V1)
  
• Contact Solcan regarding pricing of pumps, controllers, piping, tanks (if needed), heat exchanger and racking
• Select an appropriate heat exchanger for the system
• Find a pump for the water and glycol systems
  
• Determine appropriate location for data monitoring computer (water heater in mechanical room is directly below Village 1 main office)

Parts List:

• Solar Heater Peripherals:

• Mounting brackets/racking
  
• Pump
• Controllers
  
• Piping (likely 3/4" - 1" required) and fittings
• There is existing piping for the cooling tower there but it can't be used for water since it was used for treated water before. Either remove the piping and use the pipe trace or have to install lining into the pipes.
  
• Panels (obtained)
• Heat exchanger and/or drain-back tank
  

• Data Monitoring:

• Light Sensor
  
• LI-COR recommended (alternatively, UW weather station data can be used)
• http://www.licor.com/env/Products/Sensors/250A/li250A_introduction.jsp
• Flowmeter
• Inexpensive paddle-wheel variety
• Will need an output that can be measured (usually 4 to 20 mA or pulse counter); need to consider power source (some need to change the battery every year).
  
• Thermocouples (2) for inlet and outlet temperature
  
• Thermocouple immersion wells
• http://www.omega.com/pptst/BARE_SH_DH_OV_ELEMENTS.html
  
• Data Acquisition System (DAQ) or Data Logger
• DAQs: http://www.omega.com/das/index.html
  
• There seems to be many Data Loggers here, including ones with wireless and/or USB connectivity: http://www.dataloggerstore.com/
• DAQ vs. logger - Generally, DAQ don't have internal memory so need to be monitored in real time by the computer and Data Loggers do have internal memory but not necessarily a real time computer interface.
  
• Computer
  

Notes:

• Double-walled heat exchanger only necessary if fluid is rated as toxic wrto its "Gosselin rating" ... below is an excerpt from US code:
  

• P2902.5.2 Heat exchangers.
• Heat exchangers using an essentially toxic transfer fluid shall be separated from the potable water by double-wall construction. An air gap open to the atmosphere shall be provided between the two walls. Heat exchangers utilizing an essentially nontoxic transfer fluid shall be permitted to be of single-wall construction.
• The toxicity is defined here:
• ESSENTIALLY NONTOXIC TRANSFER FLUIDS. Fluids having a Gosselin rating of 1, including propylene glycol; mineral oil; polydimenthyoil oxane; hydrochlorofluorocarbon, chlorofluorocarbon and hydrofluorocarbon refrigerants; and FDA-approved boiler water additives for steam boilers.
• ESSENTIALLY TOXIC TRANSFER FLUIDS. Soil, water or gray water and fluids having a Gosselin rating of 2 or more including ethylene glycol, hydrocarbon oils, ammonia refrigerants and hydrazine.

Links:

• http://www.solcan.ca/main.html
  
• http://www.pvwatts.org/
• http://www.retscreen.net/ang/home.php
• Possibly Relevant Government Funding Programs:
• http://www.energy.gov.on.ca/index.cfm?fuseaction=conservation.osthi
• http://www.ecoaction.gc.ca/ecoenergy-ecoenergie/heat-chauffage/index-eng.cfm
• http://www.unistrut.com/
• UW Weather Station Data