Tidal (service) 2016." The company denied any wrongdoing. Following the allegations, Norwegian collection society TONO filed an official police complaint against Tidal. Danish music organization Koda has also announced that it will be conducting an independent audit of Tidal data. No free option is available. As of June 2017, Sprint is offering a 6-month free trial of Tidal HiFi to its customers. After the 6-month trial it becomes $9.99 billed to the Sprint customers account. As of July 2018, Sprint includes Tidal Premium as a part of its Unlimited Plus Plan. Tidal (service) Tidal (stylized as TIDAL) is a subscription-based music, podcast
Shrouded tidal turbine Shrouded tidal turbine The shrouded tidal turbine is an emerging tidal stream technology that has a turbine enclosed in a venturi shaped shroud or duct (ventuduct), producing a sub atmosphere of low pressure behind the turbine. The venturi shrouded turbine is not subject to the Betz limit and allows the turbine to operate at higher efficiencies than the turbine alone by increasing the volume of the flow over the turbine. Claimed improvements vary, from 1.15 to 4 times higher power output than the same turbine minus the shroud. The Betz limit of 59.3% conversion efficiency for a turbine in an