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SolarThermalMonitoringAnIntegratedApproach

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					              Solar	
  Thermal	
  ‘12	
  
Midwest	
  Renewable	
  Energy	
  Association	
  
                 December	
  6,	
  2012	
  
                                                                                                                        	
  
                                               Henry	
  K.	
  Vandermark	
  	
  
                                              Solar	
  Wave	
  Energy,	
  Inc.	
  	
  	
  	
  	
  	
  	
  	
  	
  	
  	
  	
  	
  	
  	
  	
  	
  	
  	
  	
  	
  

                                                                                                                       	
  
Solar	
  Hea)ng	
  &	
  Cooling	
  
Why	
  Monitor	
  and	
  to	
  what	
  level	
  of	
  detail?	
           	
  	
  
	
  
—  Verify	
  operations	
  
—  Continuous	
  commissioning	
  	
  	
  	
  
—  Measure	
  	
  Performance	
  
—  Identify	
  problems	
  early	
  	
  
—  Provide	
  proactive	
  maintenance	
  	
  
—  Billing,	
  shared	
  saving,	
  REC,	
  or	
  other	
  revenue	
  reports	
  
	
  What	
  Level	
  of	
  Details	
  (How	
  Deep)	
  	
  
Measurements	
  or	
  Indicators	
  

—  Measured	
  Energy	
  
    —  Production	
  (	
  Collector	
  Loop)	
  
    —  Contribution	
  	
  (DHW	
  Delivered)	
  
    —  Displaced	
  Energy	
  (	
  Fuel	
  Not	
  Consumed)	
  
Indicators	
  that	
  imply	
  &	
  confirm	
  system	
  behavior	
  
—  Meeting	
  a	
  benchmark	
  or	
  system	
  profile	
  	
  
—  Sleeping	
  or	
  dumping	
  heat	
  at	
  night	
  
—  COP	
  steady	
  	
  
—  Budget/	
  LCA(measure	
  the	
  costs	
  and	
  benefits)	
  
“How	
  to”	
  ABC	
  (build	
  a	
  process)	
  
— System	
  Schematic	
  (planned	
  or	
  as-­‐built)	
  	
  

— Decide	
  what	
  you	
  want	
  to	
  report	
  
    —  #1	
  Status,	
  Red	
  Light/Green	
  light,	
  is	
  it	
  working	
  or	
  not	
  
    —  #2	
  Production/contribution,	
  BTU’s	
  (measured	
  or	
  indicated)	
  



— Monitor	
  sensor	
  points	
  to	
  build	
  reports	
  
—  Monitor	
  all	
  systems	
  points	
  or	
  just	
  critical	
  ones	
  

—  Check	
  with	
  the	
  	
  Budget/	
  LCA	
  (costs	
  and	
  benefits)	
  
Even	
  a	
  simple	
  schema)c	
  is	
  a	
  start	
  
Simple	
  Func)onal	
  Diagram	
  
Iden)fies	
  sec)ons	
  to	
  be	
  monitored	
  	
  
Status,	
  Indicated	
  or	
  Measured	
  Produc)on	
  
—  Is	
  it	
  running	
  Reasonable	
  hours	
  per	
  day	
  
—  Appropriate	
  temperature	
  for	
  day	
  and	
  night	
  
—  Good	
  deltas,	
  No	
  negative	
  production	
  (Nights	
  
       Losses)	
  

—  BTU’s	
  based	
  on	
  runtime(assumed	
  flowrate)	
  or	
  
    measurement	
  
—  Temperature	
  sensor	
  accuracy	
  and	
  location	
  
—  Fluid	
  viscosity	
  and	
  relative	
  specific	
  heat	
  

	
  
Solar	
  Produc)on	
  is	
  the	
  energy	
  delivered	
  to	
  the	
  
building	
  or	
  storage	
  tank.	
  



         Return-Supply X flow
Heat-­‐Metering	
  	
  Sensors	
  	
  
Loca)ons	
  maPer	
  
Produc)on	
  /	
  Sq	
  Ft	
  
                            	
  
Sharing	
  data	
  enhances	
  troubleshoo)ng	
  
            Is	
  there	
  a	
  problem?	
  	
  
Radiometer,	
  Supply	
  &	
  Return	
   Supply	
  &	
  Return	
  (Drain-­‐back)	
  
(closed	
  loop-­‐Glycol)	
              5	
  miles	
  away	
  
Drain-­‐back	
  cycling,	
  is	
  it	
  a	
  problem?	
  	
  
	
  
	
     Prevent excessive Cycling
	
     Or at least notice it
Health	
  report	
  without	
  flow-­‐meter	
  
2	
  tanks,	
  both	
  gaining,	
  pumps	
  running	
  as	
  expected	
  
Health	
  report	
  without	
  flow-­‐meter	
  
2	
  tanks,	
  both	
  gaining,	
  pumps	
  running	
  as	
  expected	
  
                                              	
  
                                              	
  
                                              	
  
                                              	
  
extras	
  on	
  sensors	
  and	
  flow	
  meters	
  

				
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