A 150L non-pressurized solar water heater is a type of solar thermal system designed to provide hot water using solar energy without the need for additional pressure. Here's what you need to know about this system:Capacity: The "150L" designation indicates the storage tank capacity, which in this case, can hold up to 150 liters of water. This capacity is suitable for small to medium-sized households with moderate hot water demand.Non-Pressurized: Non-pressurized solar water heaters operate without additional pressure and rely on natural convection to circulate water between the collector and the storage tank. These systems are typically simpler in design and installation compared to pressurized systems.Solar Water Heater: This system utilizes solar energy to heat water. It typically consists of the following components:Solar collector: Flat-plate or evacuated tube collectors absorb sunlight and convert it into heat, which is transferred to the water circulating through the collector.Storage tank: A non-pressurized tank to store the heated water for later use. In this case, the storage tank has a capacity of 150 liters.Circulation system: Pipes that allow water to circulate between the collector and the storage tank through natural convection.Controls: Optional temperature controls to regulate the operation of the system.Efficiency: Solar water heaters are known for their energy efficiency and environmental friendliness since they utilize renewable solar energy to heat water, reducing reliance on fossil fuels.Installation: Proper installation of the system is essential to ensure optimal performance and longevity. Installation considerations include the orientation and tilt angle of the solar collector, plumbing connections, and insulation of pipes and storage tank.Applications: Non-pressurized solar water heaters are suitable for residential applications where hot water demand is relatively low to moderate. They can be used for domestic hot water heating, including bathing, washing dishes, and laundry.Overall, a 150L non-pressurized solar water heater offers a cost-effective and environmentally friendly solution for meeting hot water needs in households with moderate demand, utilizing solar energy to reduce energy costs and environmental impact.