Indirect Solar Water Heating System

Indirect solar water heating systems circulate a fluid typically a mixture of water and glycol in a circuit between the rooftop thermal collector and a heat exchanger that actually warms the potable water.

Indirect solar water heating system.

In an indirect system solar energy is collected and held in a special antifreeze fluid. In an indirect system fluid such as anti freeze is heated and then passed through a heat exchanger fitted to the water tank. The indirect solar system ite consists of an indirect tank which is connected to a boiler electric gas or oil or water heater. Swhs are widely used for residential and some industrial applications.

At the same time indirect systems are used for fluid mixtures circulating through compilers. Active indirect systems in which a heat transfer fluid like propylene glycol is heated up within the solar collectors and then transfers the heat to the water supply with a heat exchanger in a closed loop system. Solar water heating systems almost always require a backup system for cloudy days and times of increased demand. Solar water heating swh is the conversion of sunlight into heat for water heating using a solar thermal collector a variety of configurations is available at varying cost to provide solutions in different climates and latitudes.

Direct or open loop systems in which potable water is heated directly in the collector. An indirect water heater can also complement a solar collector providing any additional heating that cannot be supplied with solar radiation alone. Some heat loss occurs while the transfer fluid circulates the system. Conventional storage water heaters usually provide backup and may already be part of the solar system package.

The optimum installation can be constructed by using different accessories. The heat from the fluid raises the temperature of the water in the tank and the water in the tank cools the fluid ready to be passed around the system again for further heating. Indirect or closed loop systems in which potable water is heated indirectly by a heat transfer fluid that is heated in the collector and passes through a heat exchanger to transfer its heat to the domestic or service water. Indirect systems circulate collected heat to a storage tank in a basement or utility area.

The collected heat is then transferred to the water for heating that is stored in the reservoirs. In the winter this is a much lower threat of heat loss than an outdoor. Two types of solar water heating systems are available. It is best suited for cold or freezing conditions where the absence of heat exchangers means that cold cold water cannot be heated effectively.

Indirect water heater systems can be fired by natural gas oil propane or electricity whichever heat source is used by the space heating boiler. Traditionally indirect systems are more successful nationwide than direct systems because of their resistance to cold. The less complicated option is direct heating in which the water to be heated is itself passed around the system. Such a system can be put together by anyone with an intermediate level of diy.

It can be installed with or without a drainback system. The antifreeze is circulated into your hot water storage tank which heats water for use in your home.