When
it comes to buying solar water heating systems, they can be either
active or passive; but the most common ones are the active systems.
Active solar water heating systems use heat pumps while passive systems
operate on thermo-siphon or gravity.
Northern
Lights solar solutions are dedicated to provide applications based on
active solar water heating systems with pumps and controllers designed
specifically for the use in the solar industry. Solar water heating
systems usually do much more than just heating water inside your home.
Using
the vacuum tubes, solar thermal heating can be utilized in many more
applications. Residential heating, space heating, solar air conditioning
and commercial solar heating are some of the applications where solar
thermal energy is used.
Around
$1000s government grants and low interest loans are provided in North
America. This is why solar thermal heating has become the fastest
growing energy alternative in the United States and Canada. Therefore,
you should consider taking advantage of solar heating and save more
dollars today.
Active Indirect Circulation (Closed Loop) –
Active
Indirect Circulation systems use a heat transfer fluid – water or a
diluted antifreeze fluid to collect heat and a heat exchanger for heat
transfer to potable water in an indirect way. Heat exchangers start
transferring the heat from the fluid to the potable water.
Some
indirect systems are featured with overheat protection that removes the
excessive amount of heat that can’t be used. This system protects solar
hot water collector and the glycol water mixture with the glycol
concentration that depends on the expected minimum temperature.
Generally,
food-grade Propylene glycol is used as its non toxic. This system is
used for water heating, radiator and in floor home or commercial
heating. The system is closed to the atmosphere; the pressure can build
up as the temperature rises. Such type of systems will incorporate solar
expansion tanks and pressure relief valves for safety purposes.
Active Direct Circulation (Open Loop Systems) –
Active
Direct Circulation systems use pumps for potable water circulation
through the collectors. These systems are suitable in areas that don’t
freeze for long periods and don’t have acidic or hard water. The systems
may need a recirculation freeze protection which includes circulating
warm tank water during freeze conditions and it in return needs electric
power for the effective protection.
An
open loop solar water heating system operates at atmospheric pressure.
This method is used in pool as it’s not operated in freezing months.
However, the usable hot water in an open loop system is circulated
directly.
Passive Solar Water Heating Systems –
Passive
solar water heaters move water in residential spaces or a heat transfer
fluid through the system without using pumps. They count on gravity and
the tendency for water to circulate naturally as it’s heated. In fact,
warm water is lighter and emerges.
These
systems contain no electrical components and have very minimal control
for residential use. The passive storage systems comprise of one or more
storage tanks that are placed in an insulated box with a glazed side
which faces the sun.
The
solar water heating collector is well-suited for areas where
temperatures go below freezing rarely. It works really well in
households significantly during daytime and evening for hot water needs.
But they don’t operate well in residential spaces with morning draw
predominantly as they continue losing most of the collected energy
overnight.
Final consideration –
If you want to know more about the functionality, efficiency and durability of solar hot water collector, please visit the website. Contact us right now and we’ll get back to you as soon as possible!
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