In the evening, it was dim and there was no light in the palace. The palaces and pavilions gradually shrouded in the night. In the boiler workshop in the northeast corner, a roar sounded, and several tall blast furnaces began to operate.

There is a boiler workshop in the palace, which provides a steady stream of hot water for the heating installed in various parts of the palace. However, it is autumn and the weather is still hot, so it is not time to use heating, so the blast furnace running at this time is not a hot water boiler.

The gas generator that was tested and operated was officially put into use today. The water vapor generated by the steam boiler enters the gas generator through the pipeline and is then sprayed onto the scorching coal. After the two react, gas is generated.

These gases gather in the furnace and are continuously transported outward through pipelines.

The gas pipeline laid underground is connected to many gas street lamps. This is a glass gas lamp made of copper and about one meter high. After the gas is connected, eunuchs and palace maids have opened the gas valves of the gas lamp one after another, and then ignited the gas nozzle in the glass lampshade to ignite the gushing out of the gas.

In order to prevent the gas burning in the glass lampshade from burning back along the pipeline, there is a mechanism inside the gas lamp, which is a "water seal".

The light brought by these gas street lights is not as dark as it is. Compared with lanterns, the lighting range is much larger, making the main passages in the palace light up.

The lights were not bright, and they failed to shine everywhere in the palace as if they were daylight, which was far worse than the lighting effect of high-voltage arc lamps.

However, high-voltage arc lamps are too dangerous, have short lifespan, and are costly to use.

Yuwen Wen thought that high-voltage arc lamps, their transmission lines and generators were too dangerous for the palace. He didn't want a leakage accident one day and his whole family would be electrocuted.

The first emperor in Chinese and foreign history to die of a leakage accident, this kind of achievement is not good.

At this time, Yuwen Wen was standing under a gas street lamp and looked up at the flashing fire in the glass lampshade, very satisfied.

When hot coal encounters water vapor, carbon monoxide and hydrogen are produced after reaction, which is "coal gas" (water and gas). It has good brightness after ignition and can be used for lighting.

In the original history, gas lamps used for lighting probably appeared in the 18th century. By the beginning of the 19th century, London, the capital of the Empire, the Sun-Down-Set Empire, realized public lighting of gas lamps.

In the half century since then, gas lamp lighting represents "modern civilization". It was not until the emergence of electric lights that gas lamps gradually withdrew from the stage of history.

Gas lamps are products of the industrial age, but the principle is simple, and the production of gas generators is not complicated. As long as there is a steam boiler, gas generators can be made. As long as safety problems are solved, gas lamps can be used as reliable lighting equipment.

For Yuwen Wen, gas lamps are an upgraded version of biogas lamps. Before he ascended the throne, biogas lamps were used in the royal palace. Later, the whole family moved into the palace and built a biogas pond in the palace and laid out biogas lamp pipelines. Now that it is upgraded to gas lamps, it will not be too troublesome.

The biogas tank generates biogas by collecting feces and fermenting them. The gas supply is not enough to achieve large-scale use of biogas lamps. Yuwen hopes that the palace at night will be brighter, but he doesn't want to burn so many candles, so he remembers the gas lamp used for experiments in Wuzhuang Temple, Xiyang, Huangzhou.

Gas lamps have been practical a few years ago and are used by Taoist priests of Wuzhuangguan as light source for spectrometers. Textile workshops in Xiyang City have also begun to use gas lamps to ensure that the workshop can produce normally at night.

It is precisely because of the extensive use of several years that the gas generators have become increasingly perfect, and the production and use of gas lamps have also been learned. Based on this, Yu Wenwen's conception has been realized.

In the first stage, gas lamp lighting will be realized in the entire area of ​​the palace. Now, due to cost issues, gas lamps can only be used in the main areas of the palace. When the coal price drops further, it is just around the corner that the entire palace will popularize gas lamp lighting.

By then, the second stage will begin: make gas lamp lighting a fashion, and make the powerful and wealthy people who like to compete, talk about pomp and fight for wealthy use gas lamp lighting in their own mansions.

The result that Yuwen Wen wanted was the powerful and wealthy people in Chang'an. The wealthy families fully popularized the gas lamp lighting in the mansion, making gas lamp lighting like heating a threshold for fighting for wealth, comparing and pomp in the new era.

The so-called pompous scene in this era is nothing more than the extravagant life. The servants wear silk and satin, the rockery in the mansion, the gardens are integrated into one, and rely on the manor to be self-sufficient.

For Yuwen Wen, this kind of pomp is too vulgar. Some of the methods of Shi Chong and Wang Kai in the Jin Dynasty made the battle of wealth have no meaning except extravagance and waste, so he wanted to lead the new trend of the times and make the battle of wealth appear to be more technological.

First of all, there must be heating in winter, not only in the bedroom, study, or banquet hall, but also in the archery hall, otherwise the host will be embarrassed to entertain guests;

Secondly, the mansion must have gas lamps to make the mansion look like daytime at night, so that it can be of great shape;

With these two things in the mansion, let’s talk about fighting for wealth, otherwise the poor man who can’t even afford to burn coal, what qualifications are there to compare the show?

The powerful and wealthy people have the need to compete, and gas lamps are indeed useful, so the demand for coal is rising?

Yuwen Wen walked on the light path, feeling the lights coming up, and looking forward to the beautiful scene of the third stage: the main streets of Chang'an realize public lighting of gas lights at night.

Technology must benefit most people so that they can have strong vitality. Yuwen Wen wants to promote gas lamps, not only to make gas lamps a toy for the powerful and wealthy.

The light brought by gas combustion should serve the students who stay up late to study hard, and serve thousands of households, bringing light to the people in the long night, even if the light only comes from street lights.

Even if the public lighting of gas lamps is limited to the metropolis such as Chang'an, Luoyang, Jinyang, Yecheng, Guangling, and "industrial cities" such as Huangzhou Xiyang and Ezhou Daye will greatly stimulate the mining of coal.

In order to promote the development of the coal industry, Yu Wenwen not only used false propaganda to deceive people, but also made real efforts. He firmly believed that in a few years, the cost of gas lamps would become lower and lower, allowing the government's finances to bear the public lighting of gas lamps.

On bright nights, the appropriate curfew lifting will enrich people's nightlife and create more business opportunities. With reliable low-cost lighting, the factory can start construction at all even at night.

The textile workers who work in three shifts work eight hours (four hours) each shift, relying on gas lights to achieve "people shut down" while other factories also operate day and night, swallowing countless raw materials and producing a large number of products.

At this moment, Yuwen Wen believes that in many places, the factory with gas lamps is working overtime to carry out production. In contrast, the tenants are definitely resting in the large and small manors that "work from sunrise and rest from sunset".
Chapter completed!