The main difference between a passive and active solar water heater is the level of involvement required to heat the water. A passive solar water heater relies on natural convection and gravity to circulate water through the system, while an active solar water heater utilizes pumps or fans to move the water. In other words, a passive system operates without any mechanical components, whereas an active system requires external energy to function.
A passive solar water heater relies on natural convection to circulate water through the system, while an active solar water heater uses pumps or fans to move the water.
A passive solar water heater relies on natural convection to circulate water through the system, while an active solar water heater uses pumps or other mechanical means to circulate the water.
