 The temperature within the tank will remain constant if the pressure is kept constant by allowing the boil off gas to escape from the tank.This is known as auto-refrigeration.The world's largest above-ground tank (Delivered in 2000) is the 180 million liters full containment type for Osaka Gas Co., Ltd.
(2) The world's largest tank (Delivered in 2001) is the 200 million liters Membrane type for Toho Gas Co., Ltd.