With today’s economy, the trend
towards conserving energy is increasing and has become a main objective of
humankind. From cars to washing machines to computers, engineers work
continuously to invent new ways to save energy.
Saving energy is saving money. ISS,
a leader in the hydroponics industry, worked with engineers, professors,
industry, and various experts to reduce the cost of water used in commercial
sprout production. With 25+ years in the sprouting business ISS has perfected
a system of dealing with large amounts of irrigation water. This system is
called the Encore.
Chinese mung beans differ greatly
from all other types of sprouting. Bean sprouts require huge amounts of clean
fresh tempered water in order to grow world class bean sprouts.
Below are some answers to questions
about the ISS Encore Water Reclamation System:
How thirsty can a bean sprout be?
If thirst were the only factor in growing bean sprouts
very little water would be used. Bean sprouts are about 90% water. Water
weighs 8.34 lbs. Therefore 1,000 lbs of sprouts contains about 130 gallons
of water.
Why is all this extra water
needed?
Sprouts do not just need water to
grow; they need frequent rinsing to regulate the mass temperature and to
rinse away harmful byproducts generated from the plant itself.
Then how much water do they
need?
It takes 11.4 gallons of water to
grow 1 pound of top quality bean sprouts.
How much water is required for a
commercial growing room?
A typical Sentrex Infinity Bean
Sprout Growing Room that produces 60,000 pounds of sprouts, requires about
662,400 gallons from pre-sprout to harvest.
What is the cost to water a
sprouting room?
Water in the US averages $0.006
cents per gallon, including disposing of it. To grow a room from start to
finish costs $3,974.00 in water. The cost for growing the same room with an
Encore system is $397.
A 12 oz. package of bean sprouts
wholesales for around a buck. If each growing room brings in 80,000, and the
water costs $3,974, the water makes up only 5% of the selling price. Aren’t
there bigger fish to fry than saving water?
Although beans sprouts will grow
in plain tap water, they do not thrive. Also, the water temperature needs
to be adjusted before irrigation. The cost of tempering the water in most
locations is more expensive than the water itself.
How much energy expense are we
talking about?
It takes 121,881,600 BTU’s to
raise the temperature of 662,400 gallons of water 23 degrees. Gas is
generally used to heat these quantities of water and gas water heaters are
around 50% efficient. The BTU’s required are about 71,439 KWH. Based on
seven cents per KWH, that’s about $5,000. Once water is tempered, it takes
little energy to keep it tempered if the water is reclaimed.
The Encore savings are
tremendous. Without it, the cost of water and gas would be about $8,974 for
60,000 pounds of sprouts, whereas $397 should cover it with the Encore.