Natural and Mechanical Cooling Methods
for Farm and Homestead Storage
Chris Chaisson Kirk Jones
Cooling Systems – Natural to Mechanical
• Ground temperature
• Spring water
• Ice
• Outside Air
• Passive venting air exch...
Why Natural or Mechanical?
Seasonal Storage (cool seasons)
• Vents
• Fans
• Freeaire Polar Package
Year Round Storage
Ice
...
Which one is better? For whom?
• Wine- Cellar- mechanically controlled
• Cheese- Cellar- mechanically controlled
• Homeste...
Important Post-Harvest Care
• Produce should be harvested
when cold
• Harvest as late in season
• Naturally seasoned
veget...
Field heat
Traditional In-Ground Storage
Citrus fruit storage cave in Cappadocia,Turkey
Women culling lemons and repackaging for ship...
Spring House for Cold Storage
Denning, Ulster County, New York
Community ice harvests
Ice in Colonial America
Thompson's Ice House
South Bristol, Maine
Ice Options now
•Cutting and hauling
• Forming in place
•Storage Designs
• Below or above ground
• Sawdust or wood shaving...
Rainbow Heritage
The cave construction 1
Cave construction 2
Cave construction 3
Cave Construction 4
Ice in
Harvest
• Tapered plastic tubs
• -20F is ideal
Ice in the
Carrot Cave
Ice thermal values
•Thermal Conductivity, 2.2 W/m-K
•Heat capacity, 2.1 kJ/kg-K
•Heat of Fusion, 333.55 kJ/kg
Passive venting a root cellar
•4-6” PVC S+D
•Warm air escape at
ceiling
•Cold air entry 6” above
floor
•Vent through exist...
Adamah Adam
Venting details
120 CFM
Simple in-line fan
and damper
Active Venting
Dampers and duct fans
Spring loaded 4” backdraft dampers, $20 each
4” In-line duct fan, $29 ea
Adamah Retreat Center
Mechanical cooling – refrigeration
• Compressor
• Absorption refrigeration
• Biogas, wood cogen (furnace, kiln), solar –
s...
FreeAire System
FreeAire components
Web Interface
FreeAire Benefits
• Cooler Controller Capabilities – Year Round Savings
– Controls Compressor run time: Reduces energy con...
Chris Callahan (UVM AgExt)
Outside Air Hack
Set the Temperature between 35 and 40F
Drumlin Farm Service Barn
(MassAudubon)
Root cellar below, seed and squash
storage above
Renovating main floor into
classr...
Root Cellar
Cold and Moist Chambers
Squash Room
and
Seed Storage
Drumlin Cellar Venting
Drumlin Cellar Electrical
Drumlin Attic Venting
Drumlin Attic Electrical
myDTC8
Powisset Barn Crop Storage
Powisset Crop Storage – Design Phase I
Powisset Barn – Trustees of Reservations
Powisset – Design Phase II
myWebController.com
WebRelay-10
Coolbots
• More efficient above 35F if well insulated and
doors stay closed
Cogeneration –
Combined Heat and Power
Trigen systems
Absorption chillers
• Very Compact
• Few mechanical parts
• Low maintenance
• Runs on waste heat
• Reduces overall fuel us...
Traditional RV Schematic
Promising Technology
“Small-scale trigeneration system offers hope for
refrigeration in developing world” Refrigeration an...
Thank You!!
Contact us:
Chris@WholeFarmServices.com
802-777-3537
KirkJ@WholeFarmServices.com
510-697-7790
Natural and Mechanical Cooling- Kirk Edit 021715
Natural and Mechanical Cooling- Kirk Edit 021715
Natural and Mechanical Cooling- Kirk Edit 021715
Natural and Mechanical Cooling- Kirk Edit 021715
Natural and Mechanical Cooling- Kirk Edit 021715
of 58

Natural and Mechanical Cooling- Kirk Edit 021715

Published on: Mar 3, 2016
Source: www.slideshare.net


Transcripts - Natural and Mechanical Cooling- Kirk Edit 021715

  • 1. Natural and Mechanical Cooling Methods for Farm and Homestead Storage Chris Chaisson Kirk Jones
  • 2. Cooling Systems – Natural to Mechanical • Ground temperature • Spring water • Ice • Outside Air • Passive venting air exchange • Active venting air exchange • Commercial refrigeration • Controllers • Freeaire controller – active air/commercial refrigeration • Coolbot controller – controlled window AC • Callahan’s Farm Hack system • myDTC – DIY active air • myWebController – DIY active system • Co gen/tri-gen – using heat to cool • Future Systems/Future needs
  • 3. Why Natural or Mechanical? Seasonal Storage (cool seasons) • Vents • Fans • Freeaire Polar Package Year Round Storage Ice Compressor walk-ins Coolbot Mix: Freeaire/conventional vents and coolbots Co/Trigeneration absorption refrigeration
  • 4. Which one is better? For whom? • Wine- Cellar- mechanically controlled • Cheese- Cellar- mechanically controlled • Homestead – Small root cellar/Ice • Farmstead – large root cellar/Ice • Farm/CSA/Institution- Root Cellar/Walkin • Small markets- Free aire/Compressor/Cellar
  • 5. Important Post-Harvest Care • Produce should be harvested when cold • Harvest as late in season • Naturally seasoned vegetables store longer and better • Brix content will be higher • Remove field heat – Hydro cooling – Use mechanical systems
  • 6. Field heat
  • 7. Traditional In-Ground Storage Citrus fruit storage cave in Cappadocia,Turkey Women culling lemons and repackaging for shipment
  • 8. Spring House for Cold Storage Denning, Ulster County, New York
  • 9. Community ice harvests
  • 10. Ice in Colonial America
  • 11. Thompson's Ice House South Bristol, Maine
  • 12. Ice Options now •Cutting and hauling • Forming in place •Storage Designs • Below or above ground • Sawdust or wood shavings • Vents and drains • Gravel/permeable floor • Thermal mass stone/concrete walls
  • 13. Rainbow Heritage
  • 14. The cave construction 1
  • 15. Cave construction 2
  • 16. Cave construction 3
  • 17. Cave Construction 4
  • 18. Ice in Harvest • Tapered plastic tubs • -20F is ideal
  • 19. Ice in the Carrot Cave
  • 20. Ice thermal values •Thermal Conductivity, 2.2 W/m-K •Heat capacity, 2.1 kJ/kg-K •Heat of Fusion, 333.55 kJ/kg
  • 21. Passive venting a root cellar •4-6” PVC S+D •Warm air escape at ceiling •Cold air entry 6” above floor •Vent through existing window w/ insulation and plywood •Hardware cloth and screen against insects and rodents •Close in Winter
  • 22. Adamah Adam
  • 23. Venting details
  • 24. 120 CFM Simple in-line fan and damper Active Venting
  • 25. Dampers and duct fans Spring loaded 4” backdraft dampers, $20 each 4” In-line duct fan, $29 ea
  • 26. Adamah Retreat Center
  • 27. Mechanical cooling – refrigeration • Compressor • Absorption refrigeration • Biogas, wood cogen (furnace, kiln), solar – solar during day and propane at night • Modify and mix • Coolbot - Cheaper situation that uses an air conditioner • Freeaire
  • 28. FreeAire System
  • 29. FreeAire components
  • 30. Web Interface
  • 31. FreeAire Benefits • Cooler Controller Capabilities – Year Round Savings – Controls Compressor run time: Reduces energy consumption & wear and tear. – Controls Evaporator Fan run time: Reduces energy consumption, reduces heat introduced into cooled spaces & wear and tear. – Defrost Cycle Management (both air and electric defrost cycle): Reduces energy consumption, reduces heat introduced into cooled spaces. – Data Logger: Keeps a downloadable record of system component runtime and energy consumption & savings. • Cooler Controller Capabilities – Year Round Savings with Optional Features – Monitors & Manages Door Heater Operation: Reduces energy consumption, reduces heat introduced into cooled spaces. – Humidity Monitoring: Monitors and controls humidity levels in cooled spaces and ensures that humidity levels stay within a user selected range. – CO2 Monitoring: Monitors CO2 levels and can cycle fresh outside air into a cooled space (with Polar Power package). • Cooler Controller Capabilities – Maximum Savings with Polar Power (In Winter) – Uses outside air for cooling when conditions allow (in conjunction with Polar Power package): Turns off conventional mechanical refrigeration system components, reduces heat introduced into cooled spaces, system wear and tear & dramatically reduces energy consumption.
  • 32. Chris Callahan (UVM AgExt) Outside Air Hack
  • 33. Set the Temperature between 35 and 40F
  • 34. Drumlin Farm Service Barn (MassAudubon) Root cellar below, seed and squash storage above Renovating main floor into classroom addition Insulating South wall, with newer windows
  • 35. Root Cellar Cold and Moist Chambers
  • 36. Squash Room and Seed Storage
  • 37. Drumlin Cellar Venting
  • 38. Drumlin Cellar Electrical
  • 39. Drumlin Attic Venting
  • 40. Drumlin Attic Electrical
  • 41. myDTC8
  • 42. Powisset Barn Crop Storage
  • 43. Powisset Crop Storage – Design Phase I
  • 44. Powisset Barn – Trustees of Reservations
  • 45. Powisset – Design Phase II
  • 46. myWebController.com WebRelay-10
  • 47. Coolbots • More efficient above 35F if well insulated and doors stay closed
  • 48. Cogeneration – Combined Heat and Power
  • 49. Trigen systems
  • 50. Absorption chillers • Very Compact • Few mechanical parts • Low maintenance • Runs on waste heat • Reduces overall fuel use and electricity consumption
  • 51. Traditional RV Schematic
  • 52. Promising Technology “Small-scale trigeneration system offers hope for refrigeration in developing world” Refrigeration and Air Conditioning Magazine, 2014 “All-in-one energy system offers greener power for off-grid homes, farms and businesses” Engineering and Physical Sciences Research Council, 2014
  • 53. Thank You!! Contact us: Chris@WholeFarmServices.com 802-777-3537 KirkJ@WholeFarmServices.com 510-697-7790

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