| Another solution could be to liquefy the gas and pump it through existing oil pipelines. |
| Dewar used liquid air to pre-cool compressed hydrogen, reducing its temperature enough to liquefy the gas by expansion. |
| The plan is to build several huge wind turbines that would produce electricity to electrolyse water and to liquefy the hydrogen for transport. |
| Exporters liquefy the gas and ship it in tankers, then convert it back to gas at U.S. ports and deliver it through pipelines. |
| The soft metal gallium has such a low melting point that it will liquefy on contact with your hand. |
| Thus, all other elements liquefy before hydrogen, which permits high purity separation. |
