You need hot water in your home every day for showers, washing laundry, or cleaning dishes. Using a solar water heating system, you utilize the sun’s energy for heating the water in your home. With the help of a professional solar panels Canberra installation company, it is possible to harness the free solar energy for all your residential hot water applications.
All solar hot water systems come with the same basic components, but different models have some design differences. You have the option of an indirect or direct system, which affects how water is heated in collectors, or a passive or active system that impacts how water moves through the system. Below is a short primer on these differences.
Direct versus indirect solar hot water systems
The core difference is the fluid type used in the collection of heat in the processes. For the indirect system, the harnessed solar energy is collected and by an antifreeze fluid. This special fluid is then circulated into a hot water storing chamber for the hot water that you use in your residence.
A direct hot water system gets your water heated directly by the sun, instead of having the solar energy collected by the transfer fluid.
An indirect system is more impervious to cooler temperatures and is much better at absorbing the heat energy produced in cold months. The direct solar hot water system works in areas where there is constant sunlight.
Active versus passive solar water heater systems
Depending on whether external force is required to keep the circulation going, solar water heaters can be categorized into either active or passive. An active solar water heater system utilizes pumps for the circulation of house water or the antifreeze, and they are available at solar panels Canberra distributors. Electronic controllers are also used to regulate the entire process of direct active and passive solar water heating units, including temperature control.
Temperature controllers monitor the difference between the temperature of liquid leaving the solar collect and the storage tank water. Such a controller will turn on the pump when the antifreeze or domestic water in the collector is up to 8 degrees Celsius warmer than tank water. When the temperature difference is about 4 degrees Celsius, the pump is turned off. The entire control system is critical in the prevention of the pump cycling too often as well as preventing water in your tank from overheating.
Passive water heaters do not use pumps as they rely on the natural convection flow and gravity for the circulation of water or transferring antifreeze through the system. In a convection system, warm water rises while cold water falls, meaning that your storage tank should be above your solar collectors.
Choosing your solar water heating system
Now that you know about the most common types of solar heating systems for the home, get in touch with a solar panels Canberra supplier. Some of the questions you should ask include what is the best hot water system for where you live, a quote, and how long it would take from placing your order to complete the installation. Further, find out if there are any government rebates available.