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.
Definition of Solar Street Light
A solar street light is an effective outdoor lighting source operated through the use of solar energy. Solar Street Light is a recent technological innovation for lighting solutions, powered by photovoltaic (PV) panels. The PV panels having rechargeable batteries are fixed on the lighting structure or in the pole to provide power supply to the solar LED street light or street lamp during the night.
The solar panels or PV panels are designed in such a way to feed natural light source or sunlight. This enables the street light to provide sufficient light during the night, or cloudy days even for a couple of days when the sun’s energy is not available. People are switching to solar street lights these days due to several causes such as lesser maintenance, environment-friendly, eliminates your carbon footprints contribution, and handy solutions to lighting problems. Even solar street lights in India is also popular only because of these reasons. SolarClue is an online platform where people can find several solar street light manufacturers to purchase their preferred street light at different pricing portfolios.
Components of Solar Street Light
Solar Street Light is manufactured using five components, such as Solar Panel, Lighting Fixture, Rechargeable Battery, Controller, and Pole.
Solar Panel or PV Panel: - It is the main component of the solar street light that helps to convert solar energy into electricity. The solar panel is divided into two different types, mono-crystalline, and poly-crystalline.
Lighting Fixture: - Lighting fixtures like LED is another component used in solar street light that helps in providing much higher Lumens (total amount of visible light from a lamp or light source) with lower consumption of power. The primary benefit of an LED fixture is to consume energy consumption of about 50% lesser than the HPS fixture.
Rechargeable Battery: - It is used in collecting electricity from solar panels and stores it during the day time to provide power supply to the fixture during the night. Gel Cell Deep Cycle Battery and Lead Acid Battery are two different types of rechargeable batteries.
Controller: - It is also a crucial element of a solar street light. A controller is a vital part that decides when to switch on or off the charging battery and lighting system.
Pole: - It is an essential part of a solar street lighting system. Pole is built-in supporting the fixtures, panels, and batteries as they get mounted on the top of the pole.
Types of Solar Street Lights
There is a total of four types of solar street lights available in the market.
1. Off-Grid Split Type Solar Street Light System
2. Grid-Tie Solar Street Light System (Grid-Tie Single Inverter, Grid-Tie Micro-Inverter)
3. Solar & Wind Hybrid Solar Street Light System
4. All-In-One Solar Street Light System
Working Principle or Functionalities of Solar Street Light
The optimum functionality of solar street light is to offering lightning solutions at night for several streets and by using natural energy called sunlight. A solar street light is generally functioned by PV solar cells that convert the energy of sunlight into electrical energy by the use of the semiconductor material of the device. This entire process of energy conversion (called a photovoltaic effect or Photovoltaic cells) is used in storing solar power in batteries during the day and provides proper light at night with illumination reduced to 10lux.
After this, the solar cells board is used to open the circuit voltage of about 4.5V. Then the charging and discharging controller is used to protect the battery and detects movement of the voltage value. This entire process is the working principle of solar street lights.
Advantages of Solar Street Light
• The operation cost is inexpensive as the solar street light independently works
• Known as a pollution-free source of producing electricity to offer lighting solutions
• It is used not by utilizing any external wires hence, negligible chances of occurrence of accidents happened
• It has lower chances of overheating
• Easy accessibility of smart street light in remote areas because the parts of this lighting system carry easily.
A solar battery is simply a
battery charged and stored with solar power or energy and discharges power or
solar electricity when needed. Solar batteries are rechargeable and used in
off-grid PV systems to store excess electricity for future use. Some categories
of solar battery banks use wet cells, whereas others use sealed or gel cell
batteries and both the categories of batteries have their different
requirements in terms of temperature, mounting, and ventilation.
Solar batteries are C10 rating
deep cycle batteries designed to connect with the best solar charge
controllers, inverters for providing power backup at night. Solar batteries are
designed in such a way to charge with the help of solar panels by collecting
sunlight in the day time. The solar battery and charger operate with its only
component like lead, which requires water top-up maintenance in 3-6 months.
SolarClue is the best platform
where people can buy their preferred solar batteries on varied brand names, be
it a Luminous or Okaya. The solar battery is a very good option for home.
Advantages of Solar Battery
·
Helps in reducing your electricity bills
permanently
·
Contributes to a sustainable future personally
·
Optimizes your self-consumption of your PV
system’s energy
·
Declares your independence from large energy
suppliers
·
Provides portable energy solution as it can use
anywhere
Types of Solar Batteries
There are different types of solar batteries available in the market. There is not much difference in batteries of varied types, except warranty and lifespan. Classification of the type of solar batteries are as follows:
·
Flat Plate Battery
·
Tubular Battery
·
VRLA Battery
·
GEL Battery
SolarClue on two different brands provides Tabular Batteries, which are built-in tall height. This kind of batteries manufactured using three main chemical compositions, such as lead-acid, lithium-ion, and saltwater.
Battery Backup Time, Warranty and its Price
The backup time of solar battery
depends upon its AH (Ampere Hour) and the higher the battery AH, the higher
will be the battery backup time. Generally, a 150 AH battery gives a backup of
around 3 hours on 400-watt power consumption. 150 AH is bestselling rating
battery especially in India, for example, it can last up to 3-4 hours if you
use LED lights, few ceiling fans, LED Television, mobile phones, and laptop
charging. For higher duration backup, one can go for those batteries which are
having higher AH.
The warranty for every solar
battery offers based on two aspects, i.e., Replacement Warranty and Pro-Rata
Warranty. In case, your battery fails, during the replacement warranty period,
the particular Brand is responsible to replace it with a new battery. And,
during the pro-rata warranty period, a new battery is offered at a discounted
price, known as buyback offer.
The solar battery price is most importantly, dependent on
its AH and Warranty. The other important factors which impact the cost of
batteries are Brand, replacement warranty offered on batteries, the capacity of
the battery measured in Ampere Hour (AH). The solar battery price in India is
uneven since 60% of batteries manufactured by local manufacturers, and the rest
40% captured by different brands.
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