Ocean Thermal Energy Conversion System PPTX Ocean thermal energy conversion (OTEC) Britannica What is Ocean Thermal Energy? Plante nergies Thermal Energy Conversion Explain With Diagram Step By Step Energy. PROCESSING TIME: Our processing time is 3 5 business days BEFORE shipping, and longer during holiday times. You can select your shipping method at checkout. Please note: The mug designs are permanent and printed directly onto the mug surface. They are not decals or markers and will not fade, crack or peel. The actual print colors may slightly vary from those seen in the listing photos due to the nature of the printing process. Our white ceramic mugs are dishwasher and microwave safe. Our metal travel mugs are not microwave safe, and we recommend hand washing them.