What's the difference between a hydrogen balloon and a hot air balloon?

Difference 1: The principle of utilization is different.

1. The reason why a hot air balloon can soar is to use its interior to heat the air, the density of which is lower than that of the cold air outside, which plays the role of buoyancy and displaces the whole body.

2. Hydrogen balloons soar by using the properties of hydrogen, which is the lightest, with a density of 0.0899 grams per liter, much smaller than air, so it can float upward by the buoyancy of hydrogen.

Difference 2: the time of production is different.

1, hot air balloon:1In the 8th century, French paper makers Meng Brothers invented hot air balloons in Europe. Inspired by the rising paper in the stove, they used paper bags to collect hot air for experiments and let the paper bags rise with the airflow. On June 4th, 1783, the Mongols gave a public performance in Annone Square in Lyon. A simulated balloon with a circumference of 1 10 foot rose and floated 1.5 miles.

2. The world's first hydrogen balloon was born in 1780. French chemist Braque made the world's first hydrogen balloon by injecting hydrogen into pig's bladder.

Difference 3: Different power sources.

1. The only flight power of a hot air balloon is the wind. For a hot air balloon, it is necessary to choose the high-altitude airflow with appropriate speed and direction and move with it in order to complete the flight efficiently. Hot air balloons need different air currents. In the actual flight process, what the pilot has to do is to adjust the height. The height of the hot air balloon can reach more than ten meters or several kilometers.

2. The power of the hydrogen balloon comes entirely from its own hydrogen storage capacity. Once the hydrogen is used up, the hydrogen balloon cannot soar.

Difference 4: Different security.

1. The only factors that affect the flight of hot air balloon are air conditions and climate change. If handled well, a hot air balloon can fly for a long time under its own heating conditions.

2. Hydrogen balloons are different. Due to the unstable chemical properties of hydrogen, when hydrogen rubs against other objects and meets an open flame, it is easy to explode or burn. Therefore, there are few large hydrogen balloons in daily life, which are not conducive to long-term flight and have low safety performance.

Difference 5: Different uses.

1, hot air balloon was originally used for military communication and reconnaissance. With the development of economy and the continuous progress of society, hot air balloons are mainly used for air sports and sightseeing. Because of its simple operation and low requirements for landing sites, hot air balloon has really developed into a fashionable and healthy outdoor leisure sport. At present, many tourist attractions in China have hot air balloon sightseeing projects, which can let tourists feel the beauty of nature from the air.

Hydrogen balloons are seldom used in daily life. Other industries basically use more hydrogen, most of which is used in industrial production and manufacturing. Only a small part of them use hydrogen to make balloons and motorboats. Many hydrogen balloons on the market now basically use helium instead of hydrogen. For safety reasons, hydrogen balloons were basically eliminated.