{"id":2673,"date":"2020-11-03T10:22:20","date_gmt":"2020-11-03T15:22:20","guid":{"rendered":"https:\/\/elapierre.com\/blog\/tableau-comparatif-des-technologies-disponibles-sur-le-marche-de-lacericulture\/"},"modified":"2020-11-03T12:27:03","modified_gmt":"2020-11-03T17:27:03","slug":"comparative-table-of-technologies-available-on-the-maple-sugaring-market","status":"publish","type":"blog","link":"https:\/\/elapierre.com\/en\/blog\/comparative-table-of-technologies-available-on-the-maple-sugaring-market\/","title":{"rendered":"Comparative Table of Technologies Available on the Maple Sugaring Market"},"content":{"rendered":"

[vc_row css=”.vc_custom_1604422243411{padding-top: 35px !important;padding-bottom: 70px !important;}” el_class=”has-table”][vc_column][vc_column_text el_class=”titleResp”]<\/p>\n

Comparative Table of Technologies Available on the Maple Sugaring Market<\/h1>\n

[\/vc_column_text][vc_column_text el_class=”is-table”]<\/p>\n\n\n\n\n\n\n\n\n
<\/td>\nAdvantages<\/strong><\/td>\nRisks\/Disadvantages<\/strong><\/td>\n<\/tr>\n
Oil-lubricated rotary vane
\nvacuum pumps<\/td>\n		\u203a Vacuum level of 29.9\u2019\u2019 Hg<\/p>\n

\u203a Wide range of flow rates<\/p>\n

\u203a Constant flow rate from the atmospheric pressure to the end vacuum<\/p>\n

\u203a Simple design<\/p>\n

\u203a Quiet operation<\/td>\n

\u203a Risk of oil contamination by sap<\/p>\n

\u203a Risk of oil expulsion between 0-20\u2019\u2019 Hg<\/p>\n

Maintenance:<\/p>\n

\u2013 Frequent oil and filter changes<\/p>\n

\u2013 Wear of vanes if maintenance is faulty<\/td>\n<\/tr>\n

Dry claw vacuum pumps<\/td>\n\u203a Vacuum level of 28.4\u2019\u2019 Hg<\/p>\n

\u203a Constant flow rate from the atmospheric
\npressure to the end vacuum<\/p>\n

\u203a Constant flow rate over time (no wear parts)<\/p>\n

\u203a Simple design<\/p>\n

\u203a Quiet operation<\/p>\n

\u203a Proven technology in maple syrup production<\/p>\n

Maintenance: <\/strong><\/p>\n

\u2013 Almost non-existent<\/p>\n

\u2013 No fluid in the compression chamber<\/td>\n

\u203a More limited vacuum level on models
\nover 130 CFM (27\u2019\u2019 or 25.5\u2019\u2019 Hg)<\/td>\n<\/tr>\n
Dry-running rotary vane
\nvacuum pumps<\/td>\n		\u203a Simple design<\/p>\n

\u203a Quiet operation<\/td>\n

\u203a Vacuum level limited to 25.5\u2019\u2019 Hg<\/p>\n

\u203a Low capacity vs power output
\n(less CFM for the same HP)<\/p>\n

\u203a Capacity loss of up to 30% because of
\nvane wear<\/p>\n

\u203a Risk of clogging with the mixture of maple
\nsap vapors, sugar and carbon powder<\/p>\n

Maintenance:<\/strong><\/p>\n

\u2013 Frequent and expensive vane changes<\/td>\n<\/tr>\n

Liquid ring vacuum pumps<\/td>\n\u203a Vacuum level of 28.9\u2019\u2019 Hg (double stage)<\/p>\n

\u203a Wide range of flow rates<\/p>\n

\u203a Quiet operation<\/p>\n

\u203a Tolerant to maple sap<\/p>\n

Maintenance:<\/strong><\/p>\n

\u2013 Almost non-existent<\/td>\n

\u203a Low capacity vs power output
\n(less CFM for the same HP)\u203a Variable performance based on water
\ntemperature\u203a Water consumption<\/p>\n

\u203a Complex oil recirculation system<\/td>\n<\/tr>\n

Lubricated screw vacuum pumps<\/td>\n\u203a Vacuum level of 29.9\u2019\u2019 Hg<\/p>\n

\u203a Wide range of flow rates<\/p>\n

\u203a Quiet operation<\/td>\n

\u203a Variable performance<\/p>\n

\u203a Actual consumption higher than the motor
\npower rating<\/p>\n

\u203a Complex design with multiple components
\nat greater risk of failure<\/p>\n

\u203a Electronic system often required for operation<\/p>\n

\u203a Risk of oil contamination from maple sap<\/p>\n

Maintenance: <\/strong><\/p>\n

\u2013 Frequent oil changes and part
\nreplacement<\/p>\n

\u2013 Complex and expensive on-site
\nmaintenance<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column][vc_column_text]<\/p>\n

Did You Know That:<\/strong><\/h3>\n
    \n
  1. Nature may abhor a vacuum, but maple producers don\u2019t
    \nThe job of a vacuum pump is to reduce the amount of air in a tubing network. Removing the air reduces the pressure. What we measure in \u2019\u2019 Hg is the pressure difference between the ambient air and the interior of the network. Nature works hard to fill the void by pushing air from a high pressure to a low pressure. It is this pressure difference, applied through the tree, that increases sap production.<\/li>\n
  2. Best vacuum, best sap production
    \nAccording to a study by the University of Vermont*, a better vacuum can save up to 5% more maple sap per additional \u2019\u2019 Hg without any negative effect on sap chemistry, sugar content or the tree\u2019s health.<\/li>\n
  3. Vacuum level matters, especially at the tree!
    \nMeasure the vacuum level difference between the end of your lines and your releaser when sap runs. For every extra \u2019\u2019 Hg between the two, another 5% of production is lost.<\/li>\n
  4. Small leaks become very large under vacuum
    \nThe better the vacuum, the more space is taken up by air. Leaks of 1 CFM at 15\u2019\u2019 Hg become 3 CFM at 25\u2019\u2019 Hg, 5 CFM at 27\u2019\u2019 Hg and 15 CFM at 29\u2019\u2019 Hg. This means leaks become 3, 5 or 15 times bigger under vacuum, which involves just as many more steps in the woods to repair them.<\/li>\n
  5. The optimal vacuum level for maple syrup production is between 25\u2019\u2019 and 27\u2019\u2019 Hg
    \nA vacuum pump that reaches 29\u2019\u2019 Hg is easy to find. A network that can maintain 29\u2019\u2019 Hg during production and throughout the season is much more difficult and expensive to achieve, even unrealistic in most cases. As a result, a 25-27\u2019\u2019 Hg vacuum is the best option for maximizing your maple sap production at reasonable network costs.<\/li>\n
  6. At high altitudes, there is less air to remove
    \nIf we are at altitude, the barometric pressure is lower. The pressure reserve is also lower, so we can create a smaller pressure difference with a vacuum. Regardless of the vacuum pump, we inevitably lose about 1\u2019\u2019 Hg per 1,000 feet of altitude.<\/li>\n
  7. The largest pump in the world will never replace leak checking
    \nWith an oversized pump, it is possible to reach a good vacuum level without having to repair leaks in the network. However, this is strongly discouraged. Leaving too many leaks could freeze and block the tubing lines.<\/li>\n<\/ol>\n

    https:\/\/www.buschvacuum.com\/ca\/en<\/a>[\/vc_column_text][\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

    [vc_row css=”.vc_custom_1604422243411{padding-top: 35px !important;padding-bottom: 70px !important;}” el_class=”has-table”][vc_column][vc_column_text el_class=”titleResp”] Comparative Table of Technologies Available on the Maple Sugaring Market [\/vc_column_text][vc_column_text el_class=”is-table”] Advantages Risks\/Disadvantages Oil-lubricated rotary vane vacuum pumps \u203a Vacuum level of 29.9\u2019\u2019 Hg \u203a Wide range of flow rates \u203a Constant flow rate from the atmospheric pressure to the end vacuum \u203a Simple design \u203a<\/p>\n

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