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For centuries, wine producers have lost wine to evaporation through the barrels during the ageing process. Wine aged in barrels at 16 C (61F) can lose over 14% volume in three years when stored at 60% RH. Traditional European wineries stored their barrels in natural cellars to maintain high humidity and reduce the need for "topping", (adding wine to each barrel during the ageing process).
Modern wineries, with aboveground cooled ageing rooms, need modern technology to raise the humidity to 95% and cut the loss to evaporation by more than half. At the same time, yet barrels must remain dry on the outside to prevent mold which can damage the barrels and the wine.
Optiguide's Tabor FogRight Atomizer and OptiSense Humidistat provide true "dry fog" for controlled high humidity up to 95-98% RH for ideal storage of wine in barrels. High humidity reduces wine loss to evaporation and reduces the need for topping, yet barrels stay dry and without mold. Raising the humidity to 95% can reduce losses to evaporation to under 1% per year.
 
 
 
 
 
Optiguide's Tabor FogRight atomizer supplies high-humidity "dry fog" with droplets of 2-5 microns in diameter. The droplets evaporate into the air before reaching the ground. No free water collects on the barrels and the storeroom floor stays dry.
The patented technology is the acceleration chamber of the Tabor FogRight atomizer, which uses supersonic-speed air to atomize the water droplets. The Tabor FogRight atomizer has a large non-clogging orifice needing minimal maintenance.
The OptiSense Humidistat uses optical technology to control high humidity up to 95-98% RH - where other humidity meters get stuck. It allows full computer control and tracking of the humidity level in the storeroom.
 
High humidity reduces evaporation and reduces the need for topping. This table show the benefits of increasing relative humidity:
Estimation of Evaporation from Barrels (% per year)
Temperature
Relative Humidity
C
F
40
45
50
55
60
65
70
75
80
85
90
95
10
50
4.78
4.42
4.04
3.85
3.28
2.90
2.52
2.15
1.77
1.39
1.01
0.63
12
53.6
5.47
5.04
4.51
4.18
3.74
3.31
2.88
2.45
2.02
1.58
1.15
0.72
14
57.2
6.23
5.74
5.25
4.76
4.26
3.77
3.28
2.79
2.29
1.80
1.31
0.82
16
60.8
7.06
6.52
5.96
5.40
4.84
4.28
3.72
3.18
2.60
2.04
1.48
0.92
18
64.4
8.04
7.40
6.77
6.13
5.50
4.86
4.22
3.59
2.95
2.32
1.68
1.05
Reduced topping means less labor and less chance of mixing batches.
The barrels remain dry, preventing mold. High humidity (water vapor in the air) is sometimes confused with wetness (freestanding water on a surface). Mold can only form in freestanding water, not high humidity. The high humidity reduces evaporation without danger of mold, and helps preserve the barrels.
Easy installation and low maintenance make the Tabor FogRight Atomizer the only choice for "dry fog." The Tabor FogRight's large 1.5 mm orifice won't clog like pinhole foggers, so easy annual maintenance is sufficient.
The OptiSense Humidistat gives accurate and reliable control, with full data reported and stored on a PC.
You can save $100,000 per year with a $15,000 investment in humidity! Many ageing rooms hold 2000 or more 225-liter barrels. At $5 a liter, that's more than $2.5 million in the ageing room. An Optiguide system can save 4% of that wine per year!
 
At Israel's Golan Winery, select Cabernet, Chardonnay and other fine wines are aged in 225 liter (50 gallon) barrels.
They have always added humidity to the storeroom, but in 1997 they replaced their expensive ultrasonic humidifiers with Tabor FogRight Atomizers. "The old humidifiers needed maintenance twice a month, and still we didn't get the requested high humidity. The Tabor FogRight Atomizer needs little maintenance and we get higher humidity and a dry floor," says Yehuda Abu, Development Manager.
In 1999 the winery gave humidity control to the OptiSense Humidistat. Associate Winemaker Tali Sendovski uses a thermohydrograph to track the humidity and temperature in the room. She says "Winemakers understand that the higher the relative humidity, the less loss of wine to evaporation. Since we started using the OptiSense Humidistat for control, we have higher average humidity, about 95%, and less extreme variation during the day and night. And we don't have a problem with wet barrels."