Page 40 - Grapevine SeptOct 2021
P. 40
Around The Vineyard
unsuccessful yields. The primary bloom produces
the highest quality fruit, and wind machines help
protect the high-quality grapes needed to make
premium wine.”
Hauff told The Grapevine Magazine that his
Chinook wind machines work independently with-
out any other means of auxiliary heat about 90%
INCREASED of the time. The only time a wind machine, or any
FAN COVERAGE, protection strategy, struggles to be effective is in
LONGER FRUIT the rare occurrence of an advective freeze con-
BUD PROTECTION! dition. An advective freeze happens when large,
arctic air masses replace the warm air and are asso-
ciated with moderate to strong winds, no tempera-
ture inversion and low humidity.
“Warm air rises, and cold air sinks,” said Hauff.
“We all know that, but at some point, the warm air
stratifies in the atmosphere, creating an inversion
layer that holds in the warmer air. Wind machines
work by pulling the warmer, more buoyant air from
that inversion layer and mixing it with the colder,
denser air on the ground floor. The fan shaft of the
Chinook’s top gear head is built with a six-degree
angle of attack, enabling the fan to pull the warmer
air from higher altitudes, estimated to be approx-
STAINLESS STEEL imately 350 feet up into the atmosphere. The
ENGINE HOODS
movement of air combined with the mixing of the
STANDARD EQUIPMENT, warmer and cooler air raises the temperature three
NO ADDITIONAL CHARGE to five degrees Fahrenheit on average, a notable
difference.”
Exclusive trailing edge wedge increases
fan area coverage - 43% MORE! H.F. Hauff’s Chinook wind machines are useful
year-round in vineyards. They help protect the fruit
60 second mixing air movement buds in the spring, the leaf structure in fall, allow-
on fruit bud - 72% MORE!
ing for the continuation of Brix development in the
80 degree sector angle coverage grape berry, and they help protect the vine from
LARGEST IN INDUSTRY! excessive cold in winter. The first commercial wind
machines were sold in 1937. Since then, research
• FASTER temperature rise on vineyard floor
• WARMER air draw from higher up in atmosphere and development have continued to improve cov-
• MORE AIR MOVEMENT directly under the fan erage, serviceability, performance and ease of
operation.
CONTACT “They really are a lifetime investment,” said Hauff.
US TODAY! “Wind machines are long-lasting, require only min-
Phone: 509-248-0318 imal service, yet they retain a high resale value if
needed. They’ve allowed vineyards to expand their
Email: hfhauff@gmail.com crop production by transforming frost-prone areas
Web: www.hfhauff.com of their farms into fully useable crop-producing
Page 38 The Grapevine • September - October 2021 877-892-5332
Grapevine Main Pages GV091021_Layout 1-1 .indd 38 8/19/21 2:26 PM
