| 英文摘要 |
Cultivation experiments of WatWatJet 3, confirm that the cruising aerator can improve DO concentration close to the pool bottom, accelerate horizontal and vertical convection effects, and enlarge working depth of photosynthesis. Cruising aerators will replace paddle-wheel as necessary equipments, especially those pools of (i) high cultivation density and deeper depth, (ii) benthos of weak swimming ability such as shrimp and shell fishes, and (iii) eutrophic lakes and Ecology ponds. The study will develp the 2nd version of cruising aerators－WatWatJet W200 by amending the disadvantages of high manufacture costs and inconvenient installation of 1st versio, and believe that WatWatJet will help to build sustainable aquaculture industry. Its main components are : (i) a 2HP submersible pump(40kg); (ii) an motor-driven valve; (iii) a controller and (iv) atomizer associated some accessories. Its commercialization specification is designed at : (i) 2HP; (ii) a cruising length and velocity of 400 meters, and 0.3~0.5 m/s, respectively, and an aeration flow rate of 1200~1600 lpm leading to a reduction manufacture cost.. There are 40 thousand hectare fishing pools in Taiwan, 6 million hectare in china, and SOFIA 2008 reports that annual aquaculture production are 45 million tons and professional fishmen are 8.66 millions. The production scale of WatWatJet may be up to 10 thousand sets in 3 years, with an increase of 5 thousand sets per year. WatWatJet may be exported in 5 year and its production scale may increase to 40 thousand sets per year associate with a production value of 1.5 billion. Previous results confirm that WatWatJet is an energy-saving aerator since it can save fresh water resource and electricity by around 30~40 % although it does not generate energy. In addition, it can increase 10 tons fish production of 15%. The use of 40 thousand sets corresponds 400 thousand tons. In near future, the use of WatWatJet will highly accepted in China, India, Vietnam, Thailand, and Indonesia since these countries are short of fresh water and electricity but contribute 85% aquaculture production. |
