What is Solar Water Heater?
A solar water heater is a hot water system that utilizes solar energy (energy from sunlight) to heat water in cost-effective solutions. It fits on a terrace or any open space on the top of the building where it gets sunlight is then used to heat water and store it in an insulated tank. The solar water heater does not connect to the electricity grid; however, used to get the sunlight throughout the day to heat the water, and store it in the storage tank for your home, or any other desired applications.
The solar water heater incorporates high density compressed PUF insulation and an efficient heating element, which is capable of helping it to store hot water up to 48 hours. Therefore, it is best suitable for homes, apartments, hostels, and several other buildings. The solar water heater for home is made up of anti-corrosive material and advanced technology. Some of the features such as energy efficiency, durability, safe to use, and easy installation are the main reasons for which, the solar water heater has acknowledged in the market.
The solar water heater is developed by all standards of quality and safety, thus ensuring safety for use at home. SolarClue is an online platform to buy solar water heater directly from top brands such as Supreme, V Guard, Havells, EMMVEE Solarizer, Racold, and Kamal Solar.
Parts of the Solar Water Heater
A solar water heater consists of a flat plate solar collector, a storage tank (kept at a height behind the collector), and connecting pipes. The collector is comprised of copper tubes welded to copper sheets (both coated with a highly absorbing black coating) with a toughened glass sheet on top, insulating material at the back, and the entire assembly placed in a flat box. There are certain types of solar water heater, where evacuated glass tubes used instead of copper and a separate cover sheet along with an insulating box not required in this case.
Solar Water Heater Working Principle
The solar water heater is installed on the roof of the building, or open ground with the collector, and connected towards facing the sun for continuous water supply. The water flows through the tubes or solar panels are capable of absorbing solar heat to provide hot water. Then the heated water is stored in a tank for further use and the tank covers with a glass lid to prevent the loss of sunlight or heat due to convection and radiation. And, the hot water gets stored in the storage tank remains hot overnight as the tank is insulated. This is all about the working principle of the solar water heater.
The solar water heater price in India is different from several manufacturers and dealers. You can check out the list of prices from the top solar water heater manufacturers at SolarClue and analyze the features of the best solar water heater then select the best one.
Types of Solar Water Heater
There are mostly two types of solar water heaters available on SolarClue.
Flat Plate Collectors System (FPC): It is a typical solar water heating system and known for its longer life. The flat plate collector system is also called a selective coating that consists of an absorber plate and covered on its sun-facing surface with an absorbent coating. The absorber plate is placed in a top open box to protect it from weather and incorporated with a grid of metallic tubes and sheets that allow water to flow. Sheet absorbs the solar radiation falls on it and transfers it to water. The space between both the (front & back) sides of the absorber and the box is filled with insulation to reduce heat losses. Flat plate collectors are stated based on their area, commonly 1x2 m size.
The FPC water heater also can work in colder regions with freezing temperatures, but it needs an anti-freeze solution that makes the system expensive. A heat exchanger with an FPC system is required in those areas with salty water to avoid scale deposition that can impact the heating capability of the system.
Evacuated Tube Collectors System (ETC): This is another type of water heater made up of glass, hence fragile by its nature. It is ideal for colder regions where the temperature is subzero. The places where the water quality is salty, ETC requires regular cleaning due to the deposition of salt on the inner surface of glass tubes.
Each of the evacuated tubes contains a glass outer tube and a metal absorber tube that is attached to a fin. The fin's coating generally absorbs solar energy but prevents radiative heat loss. This particular type of water heating system is used more frequently for U.S. commercial applications as compared to other uses.
Both the types of water heaters are manufactured with, or without a pump, available on SolarClue. The water heater with a pump is used to move water from collectors to the storage tank. The other water heater without a pump is used utilizing the thermosiphon principle to move water from collectors to the storage tank automatically.
Pricing of Solar Water Heater
Pricing of a solar water heater varies from one brand to another as there are several brands available with SolarClue. When it comes to the price of the solar heater, the quality of the product, its durability, and reliability are three important things that do matter for customers. After analyzing such factors, people are only able to find the solar water heater price list from different brands. There are different types of solar water heaters on SolarClue, and according to that cost decides. Individuals who are interested to buy solar water heater can even compare the price as per different manufacturing brands and select the best one which suits their budget.
Solar light is a recently advanced lighting technology to produce light by using natural energy coming from the sun. What is solar light? It is a device developed in such a way to store and provide solar energy by using its particular source (sunlight). Solar lights are used in solar panels or photovoltaic cells to collect solar thermal energy and transforms it into lighting.
Information about solar light
Solar lights generally use solar energy (sunlight) during the day time to charge its inbuilt battery, which is capable of running the light during the night. Electricity saving is the first and foremost benefit of solar light or solar charging light as it helps consumers to save their electricity costs. When it comes to electricity-saving, solar lighting systems are the best affordable solutions to avail as they eliminate the costs of trenching and wiring. Solar light prices in India vary from one model to another, and one type to one more.
Solar is the long way to go especially, while the power supply is unavailable, or too expensive. This is the best answer to the question of how the solar system works. Nowadays, solar lights have gathered huge attention even at the national level due to their tremendous attributes. The topmost features of solar lights are environment-friendly, reasonably priced, and energy-efficient. And the availability of a solar light online facility is a very good option for the buyers that allow them to select their desired model just seating at their place instead of visiting the shop.
Application Areas of Solar Lights
Solar lights are considered the first-ever option in providing natural energy that helps in serving varied requirements, be it a back yard, garden area, hospital campus, or a large parking lot. Apart from these, solar charging lights also cater to the necessities of some more application areas, which are as follows:
• Lighting for highways or roadways
• Lighting for parks and playgrounds
• Solar lighting for industrial and commercial purposes
• Outdoor lights for security commitments and many more areas
Types of Solar Lights
Solar lights are categorized into varied types, which include:
• Solar Street Light / Solar Panel Street Light / Solar Street Lighting System
• Solar Garden Light / Led Garden Light / Solar Lamp for Garden
• Solar Lighting System
• Solar Emergency Light
Solar Street Light: Solar street light is ideally used for street lighting in roadways of urban as well as rural areas. The solar street lighting system is controlled by adequate battery storage backup that facilitates to operate the light for 10 to 11 hours a day. The particular system operates by an automatic ON/OFF time switch.
The estimated price for the solar panel street light is around 24,000 rupees. But the solar street light price varies based on its capacity, models, and brands. The solar street lighting system or solar street light consists of a solar photovoltaic module, battery box, lamp post and lamp with charge controller. Moreover, solar street light is popular these days due to its easy installation, eco-friendliness, electricity-saving, and low maintenance cost.
Solar Garden Lights: Solar garden lights or outdoor garden lights are manufactured in such a way to decorate and enhance the ambiance of garden spaces. However, LED garden lights or solar LED garden lights or solar lamps for gardens don’t give good brightness, but they are excellent for enlightening plants in the garden at night. Solar garden lights’ price is affordable that anyone can purchase.
Solar Lighting System: The solar lighting system is an eco-friendly device that runs lights by using batteries charged over the usage of the solar photovoltaic panel. This particular lighting system consists of solar panels, LED lamp, battery, charge controller, and inverter.
Solar Emergency Light: A solar emergency light is a battery-backed lighting device functioned by solar energy and designed in such a way to switch on automatically to provide power supply when a building experiences a power outage. The solar emergency lighting system is battery-operated light and tied into the building’s power grid permanently, which helps to provide light solutions independently by using solar light.
An emergency light is a battery-backed lighting device that switches on automatically when a building experiences a power outage. Moreover, solar emergency lights are ideal in new commercial houses and high occupancy residential buildings, such as college dormitories, apartments, and hotels.
Advantages of Using Solar Lights
There are several benefits of using solar lighting systems or solar lights. Some of them are listed below:
1. Natural Power Supply
Solar lighting is an alternative option of a traditional lighting system using no power at all from the electric grid. The solar lights are completely power-driven by solar energy, hence considered as one of the world’s leading renewable energy technologies. The solar light batteries used in solar lights are recyclable.
2. Environment-Friendly
Solar lights are environment-friendly because they do play an important role to decrease carbon imprint by producing energy from non-renewable energy sources or sunlight. Therefore, solar lights are the best option to decrease the problems caused by the exhaustion of our planet’s resources.
3. Unlimited Source
Solar energy comes to solar light is everlasting. As long as you live in a place where there is more or less sunlight, which means one can use the source of solar thermal energy infinitely. And, in this case, solar lights are the optimum choice to avail lights.
4. Low-Cost Installation
The installation cost of solar lights is very less as compared to others, running in traditional grid power. Because all wiring or cabling placed at the top of the lighting system are useful for the process of installations. Furthermore, solar lights operate through low voltage that keeps the lighting system safe for installation and maintenance.
5. Maintenance Free
The entire solar charging light is maintenance-free as the lifespan of its battery continues five to seven years. And the durability of other components of solar lights lasts up to 30+ years, which are free from maintenance.
6. Zero Electricity Bills
Users can save their electrical power bills once they start utilizing solar lights. However, buyers are required to invest one time while they purchase the solar lighting system.
7. Available in a wide range of styles and patterns
Solar lighting system or solar light is available in numerous styles, types, sizes, shapes, and designs. It is made in such a way to serve functional purposes and aesthetically and visually attractive. There are so many options available in the market now that one can choose any solar light as per his or her requirements.
In addition to these, there are also some other advantages of a solar lighting system. Solar lighting can be installed in environmentally sensitive areas, where network infrastructure or any electrical connections are not accessible. Solar lights are even useful for the situation when power failure caused due to extreme weather events such as storms or cyclones. It is considered the best substitute of the electrical network. Moreover, solar lighting systems due to their sophisticated battery technology can provide shine or light for five days continuously once they get recharged fully with the help of sun rays.
The solar power system is a complete setup ideal for home and commercial places, which helps in producing electricity by utilizing solar energy (sunlight). A solar power system is made up of solar panel (which absorbs sunlight), inverter (which converts DC electricity into AC), mounting structure (which holds the panels in place), batteries (helps to store the extra power generated), grid box and balance of systems (wires, nuts).
In other words, a solar power system is composed of numerous photovoltaic (PV) panels, inverter (a Dc to AC power converter), and a rack system that holds the PV panels in place (solar PV panels on the roofs of homes and businesses generate clean electricity by converting the energy in sunlight). Solar power system comes in 1 kW, 3kW, 5kW, 10kW, and several other capacities. It is a good choice for those who want to reduce their electric bills and their carbon footprint.
As the prices of electricity are rising, people across the world looking for renewable energy sources for their power, or electricity needs. Solar energy has now become a popular renewable energy source because of its cost-effective price and improving efficacies. And for this reason, the solar system for home has stepped forward in the market with its great features.
On-Grid Solar System
The on-grid solar system or Grid-tied solar system is a kind of solar system that generates current only when the utility power grid is available. In other words, the on-grid system is a solar system that generally works with the grid. Saving the electricity bill is the prime purpose of installing an on-grid solar system.
The on-grid solar power system consists of Solar Photovoltaic modules / Panels, DC-AC grid-tied solar Inverter and Installation Kit (includes mounting structures, ACDB, DCDB, A.C, D.C wire, Connectors, lighting arrestor, earthling cables).
The foremost benefit of installing an on-grid solar system for home is a cost-effective solution, which helps to pay for such systems by offsetting utility bills in 3-8 yrs. In addition to this, there are some other advantages of the on-grid solar system, including:
• Zero electricity bills (consumer has to pay only for the surplus electricity he consumes because the solar power system is connected to the grid only).
• Easy maintenance (on-grid solar power system has the least number of parts along with simple installation or fitting).
• Passive income generation (with connection to the grid, the consumer can charge for the surplus electricity he has generated, which is not only beneficial in reducing your electricity bills but also helps to avail the cost benefits for the excess electricity generated).
• Provides you with at least 5 years' payback time and free electricity for the next 20 years.
Moreover, the on-grid solar system is simple enough that anyone can install it by himself. The on-grid solar system price is affordable that anyone can purchase it by investing at pocket-friendly prices.
Off-Grid Solar System
The off-grid solar system is a popular type of solar power system with backup, which works both day and night. During the day time, solar panel charges the battery to run the home appliances with the use of DC, and at night or cloudy weather days when the sunlight is not available, inverter runs your home appliances (Air Conditioners, Cooler, Television and submersible pump, etc.) using the battery power or AC current.
The off-grid solar system allows you to store your solar power in batteries for future use, especially when the power grid goes down or if you are not on the grid. Hybrid systems are capable of providing power to balance the grid power whenever the sun shines, which enable to send excess power to the grid for later use.
The utmost benefit of using an off-grid solar system is to provide power for your critical loads when the power grid becomes down. An off-grid system is more prevalent that comes with a power backup and works independently of the grid.
Benefits of using off-grid solar system:
• Works as a self-sustainable system that can work independently and not depending on the grid
• Helps in avoiding power outages, which may occur without any warning
• Helps in generating enough power that can be stored and used at night or when the power grid is down
• Reduces electricity costs (fossil fuels are still the world's primary energy source)
• Easier installation facilities
• Best alternative for remote areas where there is no power access from the grid
• Keeps the environment clean and green
Hybrid Solar System
The hybrid solar system is another type of solar power system that generates power or electricity supply in the same way as the common grid-tie solar system does. The only difference of a hybrid solar system is that such a system uses batteries to store energy for later usage. A hybrid solar system can operate as backup power, and it is possible because of the ability to use the maximum amount of stored energy (uses this energy during a blackout which is similar to a UPS system).
The term ‘hybrid solar system’ refers to a combination of battery storage and solar systems in which the off-grid system is connected to the electricity grid. Hybrid solar system is classified into three types such as All-in-one Hybrid Inverter (which contains a battery inverter/charger and solar inverter together with clever controls), All-in-one Inverter with no Back-up (works like a grid feed solar inverter which enables storage of solar energy in the battery system for the self-use), and All-in-one Inverter with Back-up (used as both an on-grid or off-grid inverter, which has a great backup capability).
Advantages of hybrid solar system:
• Allows consumers to store excess solar power or low cost (off-peak) electricity
• Allows using of solar energy during the evening times (known as self-use or load-shifting)
• Facilitates with backup power capability that helps to provide power during a blackout or grid outage like a UPS function
• Enables advanced management of electricity power and energy independence
• Reduces the power consumption from the grid
Solar Accessories
Solar accessories are important for all your small and large-scale power generation requirements. The main accessories used in solar power system installation are Batteries, Solar Charge Controllers, Off-Grid Solar Panels, and Solar Battery Enclosures.
Solar batteries: Solar batteries for home energy systems are made using lithium-ion batteries (lighter and more compact than lead-acid batteries) rather than lead-acid, and saltwater. Lead-acid batteries are used in off-grid energy systems that have a relatively short life, and lower DoD than other battery types. Saltwater batteries (newcomer in the home energy storage industry) don’t contain heavy metals as compared to other home energy storage options. Solar batteries are considered the best in terms of battery capacity & power ratings, depth of discharge (DoD), round-trip efficiency, warranty, and finest manufacturing facilities.
Solar charge controllers: Solar charge controllers are a voltage regulator to keep batteries from overcharging and also regulates the current coming from the solar panels going to the battery. A solar charge controller is categorized into two different technologies, PWM and MPPT. An MPPT charge controller is more expensive than a PWM charge controller but worth buying it even if expending more money.
Off-grid solar panels: This particular solar panel consists of a battery, charge controller, grid box, inverter, mounting structure, and balance of systems. Off-grid solar panels can store enough sunlight during the day, and use the excess power generated in the night.
Solar battery enclosures: Solar battery enclosures are used to keep your batteries safe from weather, and safe from theft. It is attributed with feature locking mechanisms that protect unauthorized people against possible electrical dangers if they happen to be tampering with your equipment. Battery enclosures for solar systems are pole-mounted or ground-mounted and suitable for indoor and outdoor applications.
Solar Inverter is an indispensable device used in any solar power system utilizing sunlight or solar energy. A solar inverter is useful in changing the DC (Direct Current) into AC (Alternating Current) using solar power. In other words, the solar inverter is used to change the variable Direct Current (DC) output of the solar products into Alternating Current (AC). And this AC power is pushed into your home to operate your appliances, be it a bulb, fan, or home system.
A solar inverter is just an inverter operated using energy from the sun, which helps several devices working by DC power to run them on AC power. In this way, the consumers can use AC power to operate their required piece of equipment. One can ask why to use Solar Inverter instead of using a normal electric one. The answer is simple - solar inverter makes use of solar energy or sunlight, which is clean and pollution-free.
Usage of DC current and AC current as per Application Areas
• Direct Current electricity from the solar inverter is used to operate LED light, a cell phone charger, Bluetooth speaker and many more small devices that require less power consumption.
• Alternating Current power from solar inverter is utilized for running your big appliances such as TV, refrigerator, and microwave, which require heavy power to run properly.
Advantages of Using Solar Inverter
• Helps in diminishing the impact of unnatural weather change as it works through sunlight
• Help in retaining ecological balance, and decreases the greenhouse effect
• Helps you to save money or electricity cost in the long run
• Known as a reliable and consistent source of energy that can change direct current (DC ) into alternating current (AC)
• Acts as multifunctional electronic device that uses to convert direct current into alternating current to help large energy consumers
• Beneficial for cost-efficiency, easy installation as compared to generators
• Easy to maintain as it works fine even with regular maintenance
Types of Solar Inverter
There are diverse arrays of Solar Inverters available in the market. Some of them are listed below.
1. Grid Tie Inverter or On-Grid Solar Inverter
Grid Tie Inverter or On-Grid Inverter is a type of solar inverter connected to the grid by using solar energy. It produces a pure sine wave that is compatible with the AC waveform produced by the grid. Grid Tie inverter is designed and developed in such a way to automatically turn itself off during the time of power losses to ensure safety or security. For this reason, this particular inverter is unable to provide emergency power during such times (when power not exists).
Grid Tie Inverter is also known as PV inverter that allows consumers to drive any unused or surplus solar energy, which your system has generated back into the grid. And consumers can or cannot receive a feed-in tariff for this electricity (depends on users’ electricity provider, and area of residence).
On-Grid Solar Inverter generally requires its arrangement to be installed with anti-islanding protection. Islanding is a kind of procedure where Grid Tie inverter are deceived and utility grid still functioning even if it has been turned off. It happens due to load circuits produces in the electrical system. When it comes to the cost of such a product, on-grid solar inverter price is varied from one brand to another, based on its capacity.
It is recommended to use Grid Tie solar inverter for home purposes, which can be powered by a utility grid to use a grid tie inverter in their solar system. Moreover this is highly beneficial for the consumers when it comes to electricity saving.
2. Hybrid Solar Inverter
Hybrid Solar Inverter performs the same function as a normal inverter does. It is another kind of inverter, which converts DC electricity into AC electricity that your home can use. It also can use in charging and discharging your solar battery bank.
A hybrid inverter with solar battery charging is a cost-effective solution and convenient to install as compared to other types of inverters (a standard string and battery inverter). The majority of hybrid inverters are installed without batteries, which provide you the flexibility to retrofit a solar battery in the future when required. Hybrid Inverter is known as a multi-mode inverter because it can use to plug batteries into your solar power system, and interfaces the battery by using a technique called DC coupling. People can purchase it as per their requirement as Hybrid Solar Inverter price is reasonable in India, irrespective of its size and volume.
3. Off-Grid Solar Inverter
Off-Grid Inverter is one of the categories of solar inverter, responsible for the conversion of DC (generates by the system’s panels) into AC electricity to use varied home appliances, and commercial equipment. Off-Grid Solar Inverter can transfer excess solar electricity into the grid for consumer’s future use. And, for this reason, Off-Grid inverter is used especially in remote areas, where the house owner can separate it from the grid as per his requirement.
The utmost benefit of using Off-Grid inverter solar system gives your home greater energy independence that means your home is no longer at risk to power disruption caused by the grid or electric tower. Off-Grid Solar Inverter comes with a built-in AC charger alternative, which is also beneficial for users by allowing them to connect it with a backup generator and charge any battery.
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