Drain Back Solar Water Heater System

Indirect active closed loop drainback systems are an excellent choice for heating water unless you receive a lot of snow and have really cold temperatures.

Drain back solar water heater system.

The superstor solar drain back tank is designed to stabilize and protect solar thermal systems. One or more solar hot water collectors. A drainback system lets you use solar power to heat water for your home. A drain back tank allows all the water from solar collectors and related piping connections to drain into the tank reservoir protecting the system from both freezing and overheating.

The drainback solar water heater is not the simplest and it requires some knowledge time and money to design and build it properly. Drainback system is one of the popular solar water heating systems whose main advantages over other types are reliability simplicity and low maintenance. This could be a domestic hot water tank a. Once the system is filled a differential controller operates a pump to move water from the tank through the collectors.

A storage tank to hold the end use water being heated. Choose an active drainback solar thermal system if you need to protect the heat transfer fluid from outdoor freezing temperatures by draining the fluid into conditioned space. Drain back tanks are ideal when designing solar thermal systems especially in climates that exhibit very hot or cold temperatures. A differential controller which monitors the water temperature.

Understanding solar hot water systems the drain back design there are many types of solar hot water systems pressurized closed loop pressurized open loop drain back thermosyphon and variations called direct and indirect referring to the placement of the heat exchanger. Drain down solar hot water systems. A draindown system not to be confused with drainback is an open loop water heated by the collector goes to the hot water faucet system in which the collectors are filled with domestic water under house pressure when there is no danger of freezing. They re the best choice in hot climates although they re more expensive to install than ics.