The tube is the heart and soul of any peristaltic pump: a poorly selected tube will result in frequent tube changes and increased overall cost of ownership of any equipment. Conventionally, tube size is stated as Internal Diameter (ID) x Wall Thickness (WT).
National Gas receives funding to develop Gravitricity underground hydrogen storage system
One single rock salt mine - Winsford - has 23 <i>MILLION </i>cubic metres of void and even allowing for 10% of that void set aside for hazardous waste...