Greenhouse Energy Management, The 2008 Version

Transcription

1 Greenhouse Energy Management, The 2008 Version for the Western New York Greenhouse Programs Plan Structure Temperature Market Crop Light Fuel Timing Cost & Price With suggestions from : Neil Mattson & Lou Albright Walter N Nelson, Horticulture Program Leader Monroe & Ontario Counties

2 Agenda

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10 Plug Size

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13 Temperature ABCs

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15 Temperature 57F F 4 Weeks to Finish

16 Effect of Temperature on Impatiens, Petunia & Pansy Cultivar 54 o F 61 o F 68 o F 75 o F delay in flowering if 24-h temp is reduced 1 o F (days) Super Elfin Lipstick Avalanche Pink Dreams Rose Purple Wave Colossus Yellow Blotch Crystal Bowl Supreme Yellow Delta Pure White Sorbet Blackberry Cream

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19 Photoperiod

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22 fx fx fx

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27 Oxygen Low temperatures = low H 2 O use =oxygen starvation Remedy well drained media, large pore space Prepare to adjust water practice when changing media composition

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29 Diseases

30 Variable Costs =? % of Sales Firm one Labor 45% Seeds and Plants 16% Soil Mix Components 8% Variable Costs =? % of Sales Other Variable Costs 13% Packaging Materials 5% Labor 47% Heating 13% Seeds and Plants 18% Soil Mix Components 9% Other Variable Costs 14% Packaging Materials 5% Heating 7%

31 Firm one Gross ~$750,000 Scenario 1: Fuel nearly doubles, no other changes Result: profit 5% to 0.19% Net Income ~$35K to -$1,350 Scenario 2: 2X fuel & Sales up 5% Result: now 9.6% Scenario 3: 2X fuel & Sales up 1% Result: now 0.9%

32 Firm Two Gross ~$160,000 Scenario 1 Double fuel, no other changes Result 5.64% to 1.7% Scenario 2 2X fuel & Sales up 5% Result: now 2.9% Scenario 3 2X fuel & Sales up 1% Result: now 0.61%

33 Firm Three Gross ~$550,000 Scenario 1 Double fuel, no other changes Result 20.8% to 15% Scenario 2 2X fuel & Sales up 5% Result now 19% Scenario 3 2X fuel & sales up 1% Result now 15.8%

34 Firm Four Gross $500,000 Scenario 1 Double fuel, no other changes Result 24% to 9% Scenario 2 2X fuel & Sales up 5% Result now 14% Scenario 3 2X fuel & Sales up 1% Result now 10%

35 Fuel $/unit 1,000 BTU/$1 Efficiency % Yield 1,000/BTU/$1 Wood pellet 120/T 240/T Nat. gas 7.4/D-Therm #2 corn* 3.50/bu Rice coal 190/T Grass pellet 120/T #2 2.70/gal LP 2.50/gal electric 0.124/KWh

36 Fuel $/unit 1,000 BTU/$1 Efficiency % Yield 1,000/BTU/$1 Wood pellet 120/T 240/T Nat. gas 7.4/D-Therm #2 corn* 3.50/bu Rice coal 190/T Grass pellet 120/T #2 2.70/gal LP 2.50/gal electric 0.124/KWh

37 ENERGY COST COMPARISONS, $/Million BTU $0 $5 $10 $15 $20 $25 $30 $35 $40 Kerosene E # 2 Fuel Oil $22.64 $24.14 Propane $33.89 Natural Gas $8.82 Electricity - Resistance $35.17 Electricity - Heat Pump $17.58 Coal $10.10 Firewood $10.67 Wood P ellets $18.29 Shelled Corn $12.25

38 Penn State Energy Selector

39 Penn State Energy Selector

40 More Information MSU GH Energy Fact Sheet U Mass GH Energy Fact Sheets Penn State web site Energy Conservation for Commercial Greenhouse NRAES-3 or

41 In Closing What s new? Nothing! Sweat the small stuff, for energy savings Labor is the largest cost Questions? Comments Walter N Nelson, Horticulture Program Leader Monroe & Ontario Counties