Special tanks with engines that are powered by liquid nitrogen are called Liquid Nitrogen Tanks. The tanks consist of a heat exchanger which is necessary for heating the liquid nitrogen. Generally, liquid nitrogen has not been commercially used. The pressurized gas provides sufficient energy and force for the rotator motor to work in the engine. The liquid nitrogen energy also can be used in fuel tanks to recharge the batteries, electric force etc. nitrogen-electric force is a combination of electric force and liquid nitrogen force. Vacker Africa supplies liquid nitrogen tanks in different countries of Africa such as Kenya, Djibouti, Tanzania, Chad, Angola, Libya, Algeria, Niger, Congo, South Africa, Ethiopia, Rwanda, Morocco, Nigeria, Ghana, Congo-Pacific, Zimbabwe, etc.