Solar heating system is an effective and excellent way to reduce expensive energy costs during the heating season. Active solar heating systems use solar energy to heat fluids and then transfer solar energy directly to internal space or storage systems for future use. We offer luxurious solar energy to heat domestic hot water and exciting options to use excess solar energy! Read all of the following.

solar heating system pool
solar heating system pool

What is a solar water heater?

Solar water heating (SWH) uses solar collectors to convert sunlight into heat for water heating. Various configurations can be obtained at different costs to provide solutions in different climates and latitudes. SWH is widely used in residential and some industrial applications.

The collector facing the sun heats the working fluid, which enters the storage system for later use. SWH is active (pumping) and passive (convection driven). They use only water, or both water and working fluids. They are heated directly or through a condenser. They operate independently or as hybrid power for electric or gas heaters. ] In large devices, mirrors can concentrate sunlight into smaller collectors.

Passive Solar Heating System

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Passive systems are installed in areas where freeze protection is not a problem. The most common types are global collector storage (ICS) and thermal siphon systems.

In the system, water from cold cities flows into roof collectors. Thermosyphon requires water to rise because it is a fact of heat. The solar heating water in the flat collector rises through the pipeline and flows to the top of the insulated storage tank. The cooler water at the bottom of the tank is sucked into the lower entrance of the solar collector.

  • Integrated collectors, which work best in areas where temperatures are rarely below freezing point. They are also suitable for households requiring large amounts of hot water during the day and at night.
  • In a thermosyphon system, when warm water rises as the cooler sink drops, the water flows through the system. The collector must be installed under the tank so that the warm water can rise to the tank. These systems are reliable, but due to heavy storage tanks, contractors must pay special attention to roof design. They are usually more expensive than an overall collector-storage passive system.

Active Solar Heating System

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The active system uses an electric pump to circulate water through the collector. In warm climates, direct (or open-loop) systems are practical: urban water enters insulated storage tanks. The pump pumps water out of the tank through a solar collector and returns to the tank. Household hot water is pumped from the top of the tank, sometimes through a pressurized heater.

In cold climates, the roof of the system must be protected by draining when the temperature drops or by running antifreeze. These cold weather systems require temperature sensors, electric pumps and automatic control systems, which increase the complexity and cost of installation.

At present, the most common cold weather system is closed-loop anti-freezing heat exchange system or active indirect system. When the collector becomes hot, propylene glycol antifreeze for food safety is pumped through the collector and through the heat exchanger, and then returned to the collector. Heat exchangers heat urban water for household use.

  • Direct circulation system, the pump will circulate household water through the collector and into the home. They work well in a climate that is rarely frozen.
  • In an indirect circulation system, a pump circulates non-refrigerated heat transfer fluids through a collector and heat exchanger. This heates the water and then flows into the house. They are popular in climates prone to freezing temperatures.

How do we use the energy of the sun to transform?

For thousands of years, human beings have relied on solar energy. Early builders learned to locate homes and other structures to capture the warmth of the sun long before central heating systems were developed. Many of these “passive solar” design principles are still in use today. In addition to the use of solar energy with passive solar heating function, the “active solar” system can also be used to heat buildings. As the name implies, active solar systems require energy (usually in the form of electricity) to harness the heat of the sun.

Active solar heatingPassive Solar HeatingLiquid Active Solar Heating

  • Air is active solar energy. Perhaps the simplest active solar heating system is an air-based system that uses fans to distribute solar-heated air throughout the living space. The collection point of solar heated air may be an attached solar space, a living room, or even a sunny corridor and insulating glass to allow sufficient sunlight. Fans used to distribute hot air can be operated manually or automatically.
  • Solar heat. In this type of system, water or antifreeze is heated by the sun in a solar collector that can be installed on a roof or on the ground. When the liquid in the collector reaches a certain temperature, it is pumped to a storage tank or a heat exchanger with hot water. According to the design method of the system, the warm fluid can be pumped to the pipeline in the radiant floor heating system or to the air processor in the water-air system.
  • Standby heating is required. Whether the house adopts air active solar heating system or solar heating system, it needs some form of backup heating system. Otherwise, building residents will have very cold nights and cloudy days.

  • Sunshine, hollow glass and dark floor. There are some functions to remember to ensure optimal passive solar heating. For beginners, houses need plenty of south-facing insulating glass to allow sunlight to enter the building interior. Secondly, it is a good thing that dark floors or walls can be exposed to direct sunlight for a long time. Masonry floors and brick walls are good examples of “thermal mass” that absorbs a lot of heat – and then gradually releases it after sunset.
  • Don’t forget the shadows. It may be a curse to welcome sunshine indoors in hot summer and cold weather. That’s why it’s crucial to add shading details to any passive solar design. Sunshade, roof cantilever and external blinds are common equipment to limit summer sunlight exposure to houses.
  • Solar liquid collector is most suitable for central heating. They are the same as solar household hot water systems. Flat plate collectors are the most common, but they also provide vacuum tubes and concentrators. In collectors, heat transfer or “working” fluids such as water, antifreeze (usually non-toxic propylene glycol) or other types of liquids absorb solar energy. At the appropriate time, the controller operates the circulating pump to move the fluid through the collector.
  • The liquid flows rapidly, so when the liquid passes through the collector, its temperature increases only 10 to 20 F (5.6 to 11 C). Heating a smaller volume of liquid to a higher temperature will increase the heat loss from the collector and reduce the efficiency of the system. The liquid flows into the tank or heat exchanger for immediate use. Other system components include pipes, pumps, valves, expansion boxes, heat exchangers, tanks and control devices.

Benefits of solar heating

  • The average American family spends more than $2,000 a year on heating. The cost of heating systems that rely on fossil fuels such as oil, propane and natural gas will continue to rise.
  • By using the solar space heating system, you can use the free and sufficient energy of the sun to heat your home free of charge. The use of solar heating systems for household heating can significantly reduce fuel costs in winter. Another good advantage is that solar space heating systems can also heat domestic hot water.
  • Solar space heating systems will also reduce air pollution and greenhouse gases from the use of fossil fuels such as petroleum, propane and other petroleum products.、

Can solar heat your home?

By using solar space heating system, you can use the free and abundant energy of the sun to heat your home free of charge. Heating your home with a solar heating system can greatly reduce your fuel costs in winter. Another advantage is that solar space heating systems can also heat domestic hot water.

How much is a solar heating system?

The cost of a solar thermal system varies, but usually a pool solar water heater costs $3,500 and a solar thermal device costs $9,700. These figures include installation costs and all components (solar collectors, control panels, pipes, hot water tanks).

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