The time it takes for solar vacuum tubes to heat water depends on various factors such as the size and efficiency of the system, the amount of sunlight available, and the initial temperature of the water. Generally, solar vacuum tubes can heat water within a few hours, but it may take longer if the conditions are not optimal.
The time it takes for solar vacuum tubes to heat water depends on various factors such as the size and number of tubes, the intensity of sunlight, and the initial temperature of the water. However, on average, solar vacuum tubes can heat water to desired temperatures within a couple of hours.
The time it takes for solar vacuum tubes to heat water depends on various factors such as the intensity of sunlight, the size and efficiency of the system, and the initial temperature of the water. However, on average, solar vacuum tubes can heat water to desired temperatures within a few hours of exposure to sunlight.