4 Conventional Types of Solar Water Heater Systems

Many homeowners prefer to install solar water heaters on their homes because it is accompanied with so many benefits and advantages that are hard to resist. Benefits such as the reduction of the energy you would have to consume when heating your water for domestic use such as bathing, showering and washing the dishes. From using this heating system, you are ensured to gain incentives. But when you want to purchase a solar water heater unit for your home, you are not left with one choice. There are many solar water heater types in the plumbing market and you might be confused on what to choose between them all. Here are the following solar water heater types you might encounter in the market.


Active open loop solar system

This solar water heater system is the cheapest active water heater available in the plumbing market. This system has taken out the presence of a heat exchanger within it and lets the heat transfer directly to the water. Yet in this system, a controller differentiates the temperature of the sensor that is found at the collector. This collector might be found underneath or at the bottom of the solar water heater tank. When the water content of the tank varies, the controller would then do its job by operating the pump and making it functional. The pump will collect the water situated at the bottom of the tank and let it flow until it reaches the collector. The heater will then return to the top of the tank.

Some of the versions of this water heater system utilise a solar electricity panel to activate the DC circulating pump within the mechanism. This has the best performance because it does not allow heat loss even during night time where the system is not working often because hot water demand is at its lowest.


Direct circulation system

This system is very efficient especially on countries which experience hot season most of the times because this system pumps liquid on sunny hours. But on areas which constantly experiences sub-zero temperature, this might not be that efficient and would always require maintenance procedure from their homeowners.


Active Closed Loop Solar Water Heating System

In this solar hot water heater system, the heat-transfer fluid will flow through your system’s heat exchanger and collectors. This system is very efficient and helpful especially in areas with cold temperatures and even sub-zero temperature levels. This is because this pumps heat-transfer fluid, typically glycol fluid, and run them through the collectors. The heat that is acquired will then be transferred to the water in the water tank and would then be provided for domestic use. This system has a great freeze protection that protects it from freezing in cold seasons, but their glycol should be maintained and checked at least once a year and should be replaced once every three to ten years.


Passive Solar Water Heating System

This water heating system has two classifications which are the ICS or the Integral Collectors Storage and the Thermosiphons. This water heater system is known for its simplicity. This is because it has no wirings, pumps or controllers unlike most of the active systems. This system is composed of a storage tank basically located oftentimes on the roof. The water supply will enter this tank and the water will be heated before it will be allowed to flow into your gallon heater that is oftentimes found on ground levels.