solar water heater type

solar thermal collector

Which is the Best solar Water Heater type?

The first and the most important thing that you should consider when buying a solar water heater is the type. You need to be fully aware of the specific type of solar water that you are buying.

Solar hot water heaters are divided into different types depending on their design and mode of operations.

solar water heater type

Passive vs. active solar water heater Thermosiphon solar heater: This type of water heater is also known as a passive water heater.

The movement of water in these systems is through natural convection. Heat pumps are not used for instigating the movement.

This solar hot water heating system has an ant-freeze fluid such as glycol. It accelerates heat transfer from the collector tubes.

Its main problem is water is the slow movement of water due to low pressure.

Active solar water heater: The structure and design of this water heater are similar to the passive heater. The main difference is it has a pump that facilitates the movement of water inside the tubes.

This heater is highly efficient when you want high-pressure water.

  1. Direct vs. Indirect solar water heater

In the direct solar water heating systems, water is pumped through the solar collector before it is directed to the point of application. This can be a tap or a shower-head.

For the indirect water heater, heating of the water depends on the heat fluid, such as glycol. The fluid will absorb solar radiation and transfer this energy to the collector. Here it will be heated until it gets warm or hot.

Keep in mind that the heat fluid is resistant to freeze.

Direct-circulation systems vs Drain-down systems

Direct-circulation water heater systems are designed to pump water from the storage tank to the collectors during sunny hours.

The heated water is then channeled back to the storage tank.

The circulation cycle will continue until all the water in the storage tank is completely heated.

This is an ideal solution for areas that are prone to freezing temperatures.

Drain-down systems work in the same way as the indirect solar water heaters. They depend on a heat exchange fluid to do the heating.

This type of solar water heater has a high efficiency of more than 80%.

So, which solar water heater type should I buy?

Well, there are several factors that will determine the type of solar water heater to buy.

These include the price, area of application, climatic conditions among others. Of course don’t hesitate to consult solar water heater experts for further advice.

non pressure compact solar water heater

Does Climate and Geographical location matter when choosing solar water heater type?

It is important to consider where you live when choosing a solar water heating system. What are the climatic conditions of the area?

Since a solar water heater full depends on the sun, it is imperative that you consider this issue.

For instance a flat tube collector solar water heater may not be effective in the colder regions as an evacuated tube collector.

A flat plate collector will work perfectly well in an area that receives sunshine for a considerable period of time. In most cases, at least four hours a day.

Evacuated tube solar collectors, on the other hand, are capable of operating even when there is limited exposure to sunshine.

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Compact Non-Pressure Solar Water Heater

All Glass Solar Tube:

A compact non-pressure solar water heater is an innovative solution for households looking to save energy and reduce their carbon footprint. This type of solar water heater uses an all-glass solar tube to capture sunlight and convert it into heat, which is then used to warm up water for household use. The compact design allows for easy installation and maintenance, making it an attractive option for homeowners.

One of the key benefits of a compact non-pressure solar water heater is its energy efficiency. By using the power of the sun to heat water, households can significantly reduce their reliance on traditional energy sources like electricity or gas. This not only saves money on utility bills but also helps to reduce greenhouse gas emissions, making it a more sustainable choice for the environment.

Another advantage of the all-glass solar tube design is that it is highly durable and resistant to corrosion. This means that the system is less likely to require repairs or replacements over time, further reducing maintenance costs. Overall, a compact non-pressure solar water heater is a smart investment for any homeowner looking to save money and reduce their impact on the environment.

Compact Non Pressure Solar Water Heater Basics

Compact non-pressure solar water heaters are an innovative solution for households looking to save money on their energy bills while reducing their carbon footprint. These heaters work by using solar energy to heat water, which is then stored in a tank for later use.

The all-glass solar tube used in these heaters is a key component that allows for efficient and effective heating. The tube is made of high-quality borosilicate glass, which is known for its durability and resistance to extreme temperatures. The tube is also designed to maximize the amount of solar energy that is absorbed, making it an ideal solution for areas with high levels of sunlight.

One of the main benefits of a compact non-pressure solar water heater is its low cost and ease of installation. These heaters do not require any additional pumps or controllers, which means they can be easily installed by a professional plumber or even a DIY enthusiast. Additionally, since they do not rely on electricity or gas, they can provide long-term savings for households.

Another advantage of these heaters is their compact size. They are designed to take up minimal space, making them an ideal solution for households with limited roof space or for those who prefer a more discreet installation. Despite their small size, these heaters are highly effective and can provide hot water even on cloudy days.

Overall, a compact non-pressure solar water heater is an excellent investment for households looking to reduce their energy bills and environmental impact. With their low cost, easy installation, and compact size, these heaters are an ideal solution for any home.

All Glass Solar Tube: An Overview

The all glass solar tube is an essential component of compact non-pressure solar water heaters. It is a cylindrical glass tube that traps sunlight and converts it into heat energy to warm water. The tube is made of high-quality borosilicate glass that is highly transparent and resistant to high temperatures and thermal shock.

The all glass solar tube is designed to maximize the absorption of solar radiation and minimize heat loss. It is coated with a selective absorbing material that absorbs up to 96% of the solar radiation that falls on it. The absorbed energy is then transferred to the water that flows through the tube, heating it up to the desired temperature.

One of the key advantages of the all glass solar tube is its efficiency. It has a high heat absorption rate, which means that it can heat water quickly and efficiently, even in low light conditions. This makes it an ideal solution for areas with low solar radiation or frequent cloudy days.

Another advantage of the all glass solar tube is its durability. The high-quality borosilicate glass is resistant to scratches and chemicals, ensuring that it will last for many years with minimal maintenance. Additionally, the tube is designed to withstand extreme weather conditions, such as hail, high winds, and heavy snow.

In conclusion, the all glass solar tube is a crucial component of compact non-pressure solar water heaters. It is efficient, durable, and designed to maximize the absorption of solar radiation and minimize heat loss. With its high-quality borosilicate glass and selective absorbing coating, it is an excellent choice for anyone looking to harness the power of the sun to heat their water.

Working Principle of Compact Non Pressure Solar Water Heaters

Heat Absorption

Compact non-pressure solar water heaters use all-glass solar tubes to absorb solar radiation and convert it into heat energy. The solar tubes are made of high-quality borosilicate glass and have a vacuum layer inside that prevents heat loss. The inner wall of the tube is coated with a special selective coating that absorbs solar radiation and converts it into heat. This coating has a high absorption rate for solar radiation and a low emission rate, which means that it can absorb more solar radiation and lose less heat.

Water Circulation

The water in the solar water heater is circulated through the solar tubes by a small electric pump. The pump is powered by a solar panel that is connected to the solar water heater. When the sun shines on the solar tubes, the water in the tubes is heated and rises to the top of the tubes. The hot water is then circulated through a heat exchanger, which transfers the heat to the water in the storage tank. The cooled water then flows back into the solar tubes to be heated again.

The water in the storage tank is heated gradually throughout the day, and it can reach temperatures of up to 70°C. The storage tank is well-insulated to prevent heat loss, and it is equipped with a temperature sensor and a thermostat to ensure that the water temperature is maintained at a safe and comfortable level.

In summary, compact non-pressure solar water heaters use all-glass solar tubes to absorb solar radiation and convert it into heat energy. The heated water is then circulated through a heat exchanger and stored in a well-insulated tank. These solar water heaters are an environmentally friendly and cost-effective way to heat water for domestic and commercial use.

Benefits of Compact Non Pressure Solar Water Heaters

Compact non-pressure solar water heaters with all-glass solar tubes have several benefits that make them a popular choice for residential and commercial buildings. Here are a few of the most significant benefits:

1. High Efficiency

Compact non-pressure solar water heaters are highly efficient and can provide up to 70% of a household’s hot water needs. The all-glass solar tubes are designed to absorb sunlight and convert it into heat, which is then transferred to the water in the tank. This process is highly efficient and can significantly reduce energy bills.

2. Low Maintenance

Compact non-pressure solar water heaters require very little maintenance. The all-glass solar tubes are designed to be self-cleaning, which means that they do not require regular cleaning or maintenance. Additionally, the tanks are made of high-quality materials that are resistant to corrosion and rust, which further reduces maintenance needs.

3. Environmentally Friendly

Compact non-pressure solar water heaters are environmentally friendly and can significantly reduce a household’s carbon footprint. By using solar energy to heat water, these systems reduce the need for fossil fuels, which are a major source of greenhouse gas emissions. Additionally, they do not produce any harmful emissions, which makes them a clean and sustainable option.

4. Cost-Effective

Although the initial cost of a compact non-pressure solar water heater may be higher than traditional water heaters, they are cost-effective in the long run. The energy savings provided by these systems can offset the initial cost, and they have a longer lifespan than traditional water heaters, which reduces the need for replacement.

5. Versatile

Compact non-pressure solar water heaters are versatile and can be used in a variety of settings. They are suitable for both residential and commercial buildings and can be installed in areas with limited space. Additionally, they can be used in areas with low water pressure, which makes them a great option for rural areas.

Overall, compact non-pressure solar water heaters with all-glass solar tubes offer several benefits that make them a great option for anyone looking to reduce their energy bills and carbon footprint.

Installation Process of Compact Non Pressure Solar Water Heaters

Installing a compact non-pressure solar water heater is a relatively straightforward process. However, it is important to follow the manufacturer’s instructions carefully to ensure that the system is installed correctly and will function properly.

The following steps outline the basic installation process for a compact non-pressure solar water heater:

  1. Choose a location for the solar collector that receives maximum sunlight throughout the day. The ideal location is on a south-facing roof or wall with no shading from trees, buildings, or other obstructions.
  2. Install the mounting brackets for the solar collector according to the manufacturer’s instructions. The brackets should be securely attached to the roof or wall to prevent the collector from falling or shifting.
  3. Connect the solar collector to the storage tank using the provided hoses and fittings. The collector should be positioned higher than the storage tank to allow for natural circulation of the water.
  4. Install the temperature and pressure relief valve on the storage tank. This valve is designed to release excess pressure and prevent the tank from overheating.
  5. Connect the water supply to the storage tank and turn on the water to fill the tank. Check for leaks and tighten any fittings as necessary.
  6. Connect the solar controller to the system and program it according to the manufacturer’s instructions. The controller will regulate the flow of water between the collector and the storage tank to ensure that the water is heated efficiently.
  7. Test the system by turning on the hot water faucet and checking the temperature of the water. Adjust the controller settings as necessary to achieve the desired temperature.

Overall, the installation process for a compact non-pressure solar water heater is relatively simple and can be completed by a professional plumber or experienced DIYer. By following the manufacturer’s instructions and taking the necessary precautions, homeowners can enjoy the benefits of a reliable and energy-efficient hot water system.

Maintenance Tips for Compact Non Pressure Solar Water Heaters

Compact non-pressure solar water heaters are a cost-effective and eco-friendly way to heat water. They are low maintenance and can last for several years with proper care. Here are some maintenance tips to keep your compact non-pressure solar water heater in good condition:

  • Regular cleaning: Clean the solar tube and the collector panel regularly to remove dust, dirt, and other debris that can reduce the efficiency of the system. Use a soft cloth or sponge and mild detergent to clean the surface of the tube and collector panel.
  • Check for leaks: Check the system for leaks regularly. If you notice any leaks, repair them immediately to prevent further damage to the system.
  • Check the insulation: Check the insulation around the solar tube and collector panel regularly. If you notice any damage or wear, replace it immediately to prevent heat loss.
  • Check the temperature and pressure relief valve: Check the temperature and pressure relief valve regularly to ensure that it is functioning properly. If you notice any issues, replace it immediately.
  • Check the anode rod: Check the anode rod annually and replace it if it is corroded or worn out. The anode rod protects the system from corrosion and extends its lifespan.
  • Professional inspection: Have a professional inspect the system annually to ensure that it is functioning properly. A professional can also identify any issues that need to be addressed to prevent further damage to the system.

By following these maintenance tips, you can extend the lifespan of your compact non-pressure solar water heater and ensure that it continues to provide you with hot water for years to come.

Factors to Consider When Choosing Compact Non Pressure Solar Water Heaters

When it comes to choosing a compact non-pressure solar water heater, there are several factors to consider. Here are some of the most important ones:

1. Capacity

The capacity of the solar water heater is an important factor to consider. It should be chosen based on the hot water requirements of the household. A larger capacity solar water heater is suitable for a larger household, whereas a smaller capacity one is best for a smaller household.

2. Climate

The climate of the area where the solar water heater will be installed is an important factor to consider. The amount of sunlight available in the region will determine the efficiency of the solar water heater. If the area receives a lot of sunlight, a compact non-pressure solar water heater will be more efficient.

3. Type of Glass Tube

The type of glass tube used in the solar water heater is another important factor to consider. A high-quality all-glass solar tube is the best option for a compact non-pressure solar water heater. It is durable, efficient, and can withstand extreme temperatures.

4. Installation

The installation of the solar water heater is an important factor to consider. It should be installed in a location where it can receive maximum sunlight. The installation should be done by a professional to ensure it is done correctly.

5. Cost

The cost of the solar water heater is another important factor to consider. It is important to choose a solar water heater that is within your budget. However, it is also important to consider the long-term savings that can be achieved by using a solar water heater.

In conclusion, when choosing a compact non-pressure solar water heater, it is important to consider the factors mentioned above. By considering these factors, you can choose a solar water heater that is efficient, durable, and within your budget.

Conclusion

In conclusion, the compact non-pressure solar water heater with all-glass solar tubes is an excellent choice for those looking for an energy-efficient and cost-effective way to heat water. The system is easy to install, requires minimal maintenance, and has a long lifespan.

The all-glass solar tubes are highly efficient, capturing more solar energy than traditional flat plate collectors. This means that the system can provide hot water even on cloudy days, making it a reliable source of hot water year-round.

The compact design of the system makes it ideal for small homes or apartments, where space is at a premium. The system can be installed on a roof or a wall, making it a versatile option for a variety of homes.

The non-pressure design of the system also makes it safer and more reliable than traditional pressure systems. There is no risk of explosions or leaks, and the system can operate at a lower pressure, reducing wear and tear on the components.

Overall, the compact non-pressure solar water heater with all-glass solar tubes is an excellent investment for those looking to reduce their energy bills and their carbon footprint. With its high efficiency, low maintenance, and long lifespan, this system is sure to provide reliable hot water for years to come.

 

Main Component Specifications
Component
Materials & Specifications
Evacuated Tubes
Material: Borosilicate 3.3
Tube style: Twin wall all glass
Dimensions: ∅58mm outer tube; ∅47mm inner tube;  1.8m length, 1.65mm outer tube wall thickness
Solar Absorber Coating
Material: Graded AL/N on AL
Absorptance: >92% (AM1.5);
Emittance: <8% (80 C)
Vacuum: P<5×10-5 Pa;
Heat loss: <0.8W/(m2 C)
Manifold
Outer Shell: Color Painted steel (standard) or Stainless Steel (optional) , 0.5mm thickness
Inner Shell: Stainless Steel 304-2B (standard) or 316L (optional) , 0.5mm thickness
Insulation Layer: Extreme High density Polyurethane Foam from Europe
Operating angle: 15-80 Degrees
Startup temperature: 0 C Degrees
Rubber Components
Material: HTV Silicone Rubber (UV stabilized)
Mounting Frame
Material: Zinc-Coated Galvanized Steel (standard) or Aluminum ally (optional)  or Stainless Steel (optional)
Local Team Installation Support

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