An offshore wave energy device with a frontal width of 5 metres, an overall efficiency of 38% and a rated capacity of 35
Posted: Tue Jul 12, 2022 1:35 pm
An offshore wave energy device with a frontal width of 5 metres,an overall efficiency of 38% and a rated capacity of 350kWe hasbeen operating for 6 hours in seas which are described by an Hs of4 metres and Te of 9.5 seconds. Determine the electrical energygenerated over the period and the load factor.
FURTHER DATA / INFORMATION REQUIRED • Density of fresh water pw = 1000kgm-³ Density of sea water psw=1025kgm-³ Density of air pa = 1.29 kgm-³ • For a deep water wave,= • For an irregular wave spectrum of sea states, the Power per unit of crest length is given by: gr 2π P' (Wm-¹) = Pg² H²T. +1 2 32π or approximately P' (kW/m) = 0.5 H² T Gravitational constant g = 9.81ms-² The specific heat capacity of water, c = 4.2kJ/kg°C The energy, Q (J) required to heat a substance of mass, m (kg) and specific heat capacity, c (J/kg°C) by a temperature At is given by 'Q = mc^t'
- An Offshore Wave Energy Device With A Frontal Width Of 5 Metres An Overall Efficiency Of 38 And A Rated Capacity Of 35 1 (60.7 KiB) Viewed 35 times