Development & testing of wave energy converters, test bed for materials, structures and engineered devices designed for harsh wave environment. Land-based multi-trophic aquaculture.
- Engineering - Agricultural, Forest, Environmental, Mining, Mineral
- Marine/Ocean Sciences
- Energy (Renewable and Fossil)
- Environmental Technologies and Related Services
- Fisheries and Aquaculture
- Ocean Industries
Continuous monitoring of atmospheric conditions at site.
Precipitation: +/-0.2mm; Temp:+/- 0.1C; RH:+/-0.8%; Wind: ±0.3 m/s (0.6 mph) or 1% of reading; Solar Radiation (400-1100 nm): +/-3% up to 2000wm-2. All sensors mounted on 10 m tower; average, max and min (vector average for wind) recorded every 10 min and every 24 hrs.
Analog & digital data acquisition, analog & digital control outputs, data processing & storage. System is currently used to monitor & control land-based farm with local and web-based user interface.
System: 166,000 samples /second aggregate
Voltage in: 16 bit; voltage out: 8 & 14 bit
Digital in up to 30V; digital out TTL
Farm consists of five cascaded layers of production tanks. Water flows by gravity through each layer so that the effluent from one layer becomes the feed stock for the next. The farm is designed to study trophic interactions between the layers and the use of marketable organisms as a bio-filter in land based aquaculture. Ocean water is pumped and filtered to 200 µm before making a single pass through the farm. Total water volume of the farm is 65 m3 . Tank Oxygen levels can be monitored and controlled, and flow rates and temperatures are continuously monitored.
Total Volume 66 m3
Sea water flow rate: 14m3 hr-1
Measures and logs surface waves and ocean current profiles as a function of depth using acoustic Doppler sonar. With connected software produces directional wave spectra and statistics as well as current profiles as frequently as each 30 minutes.
Max depth 60m; profile minimum cell size 0.5m;
Sampling rate 2 Hz (waves), 1Hz (current)
Waves: Hs to 15m, accuracy 1% or 1cm
Current: +/- 10ms-1range; +/- 1cms-1 uncertainty
Measure, log and (with appropriate cabling) transmit (RS485) 10-channels of analog data, sampled at up to 6 Hz.
2 channels are reserved for temperature and pressure (depth); all others are 0-5V (14bit). Maximum depth (exclusive of attached sensors) 2000m. Can store up to 30M data points, up to 3 month autonomous battery life (internal batteries, life depends on sensors & sampling regime).
Subsea inspection & survey, delivery & recovery of small items or lines for recovery of larger items.
300m max depth; 5 thrusters, 250m tether, HD camera, scanning sonar, single function 3-jaw grabber/cutter, 2.8Kt surface speed, Max operating current 2 Kt.
Date submitted: Thu, Feb 9, 2017 10:42 PM
Date updated: Thu, Feb 9, 2017 10:43 PM