1. Electricity on the train: There is a generator under each carriage. When the train is moving, the generator turns to produce electricity.
2. Water in the train: When the train stops at the station, there will be water workers on the side that does not open the door to add water to the water tanks of each carriage in order to providing water for passengers when the train is running;
Also, when a coal-fired steam locomotive stops at a station, there is a "water crane" standing next to the track, which is used to add water to the locomotive< /p>
Solar water heaters can be used as water circulation air conditioners. This is a complete system. Depending on the geographical location, climatic conditions, house insulation, required indoor temperature, etc., the size of the water heater and the application of other auxiliary materials are determined, and the plan should To be conceivedand guided by professional staff. Installation is required to ensure the effect. It is recommended if you want to do this that you find a professional manufacturer to do it for you. Don't use an "almost" solar water heater and just find someone to do it. The effect will not be good.