pump

noori — Thu, 18 May 2023 02:28:06 +0000

DC BRUSH SOLAR PUMP

YIWU GREENWAY IMP&EXP CO.,LTD

地址：浙江省义乌市诚信大道369号跨界· 数字经济园（C座8号门4楼455号）

Tel: +86-579-85600735

Email: sales@yiwugreenway.com

www.yiwugreenway.com

Fire breaks out in solar energy systems

noori — Fri, 03 Feb 2023 05:45:04 +0000

Fire breaks out in solar energy systems

Generally because of three main things, which are as follows:
1- Insulation fault (such as wounds between two wires as a result of mechanical stress, insulation corrosion over time, water leakage, etc.) )
2- Overloading cables (passage of a current that is not supported by the wire)
3- Reverse current in the solar panel reverse current, and we’ll talk about this a little bit.

Reverse current in solar panels reverse current occurs as a result of:
1- Palace in the circle short circuit (as a result of negative touch and solar panel – or due to any connection error faulty wiring)
2 – The effect of matrix PV strings on each other, and this is the core of the matter and it happens as follows:
When the effort of the open-circuit voltage of a single string is significantly different from the effort of an open circuit for the rest of the chains parallel to it and connected to the same inverter or regulator or wherever it was .
As this leads to current flowing from sound matrices to the matric that has weakness instead of flowing to the inverter and supplies the pump, battery or network… With the energy that is required .
Reverse current can lead to a dangerous rise in temperatures and cause fires in the solar matrix. Therefore, the endurance of the solar panel should be tested according to IEC 61730-2 standard and the manufacturer should provide a maximum reverse current value (IRM).
And here comes the importance of choosing the quality of solar panels, in conjunction with the importance of making electrical protectors from diodes, breakers, systems, etc…

Busted: Common Solar Myths and Misconceptions

noori — Thu, 30 Sep 2021 09:38:41 +0000

When it comes to installing solar panels on your roof, some homeowners may be hesitant to adopt it because of what they’ve heard or read on the internet. Let’s set the record straight so rumors and falsehoods don’t prevent you from reaping the benefits of solar energy. Here are some common myths and misconceptions:

Myth 1: Solar only works when the sun is shining.

We still need power when it’s raining. Actually, solar technology can be leveraged in virtually any condition, including rainy and snowy days, because some sunlight still reaches the earth. Solar panels tend to perform best in cold and sunny climates because heat interferes with the conversion of sunlight into electricity. On top of that, battery storage can be connected to your solar panels and provide energy at night. This is your clean-energy backup, as opposed to conventional backup generators—if the power goes out in your neighborhood, your power will stay on.

Myth 2: Solar panels aren’t efficient enough.

Some customers hear that solar panels have an efficiency rate of 22% and wonder why it’s not 100%. Some sunlight will be reflected off the panel or be turned into heat instead of electricity. Solar cell materials also can’t absorb all the types of light that make up sunlight, like infrared light. The world-record efficiency for a solar cell at room temperature under normal sunlight is 39%, but these cells are too expensive to be cost-effective for home solar panels.
Truth is, with this huge energy supply, commercially available solar panels provide plenty of power to meet your home’s needs, at a cost at or below electricity provided by the grid in most parts of the country.

Myth 3: Solar is too expensive.

While the cost of a residential solar system can range from $15,000 to $35,000, you don’t have to pay for it all at the time of installation. There are several solar financing options that allow you to pay over time, plus local, state, and federal tax incentives and rebates to offset the costs. And solar panels require little ongoing maintenance—they are durable and reliable.

Myth 4: I don’t own my house, so I can’t go solar.

If you rent your house or live in an apartment building, community solar programs enable you to take advantage of solar energy. Community solar programs allow multiple people to benefit from a single, shared solar array. These arrays can be installed on your building or off-site. Purchasing costs and the installation of the solar energy system are then divided among all of the participants. Then everyone can buy into the shared system at a level that best fits their budget.

Where can I buy solar panels?

Well, right here on this website, of course!
YIWU GREENWAY IMP & EXP CO., LTD the one stop supplier for solar irrigation and solar off grid home systems. We produce large quantities of our own brand and customer OEM solar panels. And we always have huge stock solar panels of top 10 brands like Jinko solar, Trina solar, Yingli solar, Canadian solar, Gcl solar, risen solar, Hareon solar Q cell /Hanwha LDK etc.

Long-Term System Planning for Solar Integration

noori — Sun, 19 Sep 2021 01:44:52 +0000

What is Long-Term System Planning?

Long-term system planning refers to the planning activities conducted regularly by utilities and power system operators to inform investment decisions on generation, transmission, and distribution capacities in order to support anticipated customer demand. The rapid addition of solar energy and other new energy technologies onto the grid has changed the ways in which grid planning is performed.
This modernization of the electric power system requires developing new tools and models—particularly for analyzing the variable and dynamic behaviors of the electric power system—so the grid can be run reliably and contribute to our energy resilience and security. Learn more about the basics of systems integration.

Why is Long-Term System Planning Important?

As more solar is added to the grid, it presents challenges for system operators because of its variable nature: solar can only generate electricity when the sun is shining, so it must be balanced with other sources of generation and storage to meet customer demand. Conducting simulations of different grid scenarios to assist with long-term planning can help determine optimal resource allocations far in advance to prevent any problems such as resource inadequacy or wasteful curtailment.
Modeling and simulation have become quite advanced for different sections of the overall grid. These models have included the bulk power system, sub-transmission networks, and distribution feeders. But the rapidly changing features of each of these interconnected subsystems affects the whole, so it is important to better understand the dynamic behavior of a fully integrated grid.
The U.S. Department of Energy Solar Energy Technologies Office (SETO) funds research to improve system planning models and tools in order to meet its goal of improving the ability of solar energy to integrate into the country’s electric grid, and to combine solar technologies with storage, efficiency, and other value-adding technologies that allow solar to contribute to enhanced grid reliability and resilience.

Where can I buy solar panels?

How to Getting the Most out of Solar Panels

noori — Sat, 11 Sep 2021 07:46:15 +0000

Luckily, solar is cheaper than ever, thanks to the falling cost and rising efficiency of photovoltaic solar panels. But here’s something to consider: figuring out the real cost of solar energy is about more than just the price tag on the panels and their rated power output. For example, there’s the lifespan of the panels to take into account. Hence, here are some instructions for customers to make the best use of solar panels.

MAN, IT’S A HOT ONE

High temperatures reduce the voltage of a solar cell — which, as you might guess, is a bad thing. Conventional rooftop solar modules can lose as much as 30 percent of their electricity output on hot summer days. Researchers at Arizona State University are trying to address this problem by improving the backsheet of a solar PV module, which serves as an electrical insulator and protects the module from moisture and other environmental damage.

DIRT DOES HURT

Another way panels lose power is simply that they get dirty. The effects of “soiling” vary widely by location, but energy yield losses of 10 percent are not uncommon. Research on environmental conditions and panel maintenance procedures could help us better understand how and why panels lose power to dirt, which in turn could lead to better prediction of soiling from one solar energy system to another and more effective dirt-resistant treatments for PV module glass.

SHADY SITUATIONS

While heat and dirt reduce solar panels’ energy yield in a pretty straightforward way, shadows are a bit more complicated. In instances when a faint cloud goes over the solar module, the power levels are simply reduced. However, sometimes the light is completely or regularly blocked by a permanent structure — like a utility pole that shades just one part of the module — which can actually cause “hot spots” that can damage the module over time. The University of Michigan, Ann Arbor has a clever solution in the works: its “super-cell” design can actually balance power across the module at the cell level. This lets the unshaded cells keep working normally, increasing the energy yield of the module and even improving its durability.

Where can I buy solar panels?

Photovoltaic electricity: Do you know what solar energy is

noori — Sat, 04 Sep 2021 07:47:41 +0000

Photovoltaic cells convert sunlight into electricity

A photovoltaic cell, commonly called a solar cell, is a nonmechanical device that converts sunlight directly into electricity. Some PV cells can convert artificial light into electricity.

Photons carry solar energy

Sunlight is composed of photons, or particles of solar energy. A PV cell is made of semiconductor material. When photons strike a PV cell, they may reflect off the cell, pass through the cell, or be absorbed by the semiconductor material. Only the absorbed photons provide energy to generate electricity. When the semiconductor material absorbs enough sunlight (solar energy), electrons are dislodged from the material’s atoms. Special treatment of the material surface during manufacturing makes the front surface of the cell more receptive to the dislodged, or free, electrons so that the electrons naturally migrate to the surface of the cell.

The flow of electricity

The movement of electrons, each carrying a negative charge, toward the front surface of the cell creates an imbalance of electrical charge between the cell’s front and back surfaces. This imbalance, in turn, creates a voltage potential like the negative and positive terminals of a battery. Electrical conductors on the cell absorb the electrons. When the conductors are connected in an electrical circuit to an external load, such as a battery, electricity flows in the circuit.

Applications of photovoltaic systems

The smallest photovoltaic systems power calculators and wristwatches. Larger systems can provide electricity to pump water, to power communications equipment, to supply electricity for a single home or business, or to form large arrays that supply electricity to thousands of electricity consumers.

Where can I buy solar panels?

Factors about the lifespan of solar photovoltaic panels

noori — Sun, 29 Aug 2021 05:41:33 +0000

Currently, it is widely believed that the average lifespan of crystalline silicon photovoltaic cells is almost 25 to 30 years, and amorphous silicon photovoltaic cells remain more than 15 to 20 years as well. Solar photovoltaic panels in other materials are also recorded to have a useful life of around 20 to 30 years. Actually, there are many factors affecting the lifespan of solar photovoltaic panels as follows.

1. Photovoltaic cell efficiency attenuation

The average efficiency attenuation of crystalline silicon photovoltaic modules is about 0.5-1%

2. Battery unsoldered

Due to the unreasonable spacing design, poor welding quality between solar cells, and the temperature difference between components during the day, the welding strip and the battery have to experience thermal expansion and cold contraction movement every day, which finally leads to the welding strip and the battery strip being weld off, resulting in the scrap of the component.

3. The welding belt of the component broke

The working environment of solar photovoltaic modules is poor, for instance, the great difference in temperature.

4. Hash climates

Wind and snow load should also be taken into consideration for the lifespan of solar photovoltaic panels.

Where can I buy solar panels?

Guide to choosing your solar panels

noori — Sat, 21 Aug 2021 06:58:41 +0000

Four grades of solar panels

The grade of solar panels can be divided into grade A, B, C and D, while grade A modules can be divided into grade A+ and A-. The same is true for class B. The cost of different grades of solar panels also varies greatly. As for grade A cell reaching the highest quality level, it can be available to any component. Grade B cell is slightly lower than grade A. Moreover, grade C battery may be badly defective, even with no corner. It is only suitable for making it into small pieces for customers with special needs. As for grade D, we call them fragments and supply them with special needs.

Manners of judgments of grade

However, how to judge the grade of solar photovoltaic panels? It can be judged by appearance. For example, we can examine the toughened glass surface carefully. The products of small manufacturers are relatively rough, and the silica gel left on the surface will reduce the efficiency of the power generation of the panel. Besides, checking whether the battery is cracked or cracked remains an efficient way. There are many irregular manufacturers with broken battery splicing, which may affect the safety of the whole panel. In addition, we can focus on the quality of the pressure on the back. If there are uneven conditions after pressure, such as bubbles, folds and so on, it can be regarded as relatively poor quality products.

Where can I buy solar panels?

Solar Panel Cleaner : Automatic Solar Panels Cleaning

noori — Sat, 14 Aug 2021 07:25:10 +0000

The emergence of solar panels cleaning machine

As domestic solar technology becomes increasingly advanced, more and more businesses and households are installing solar roofs. But since almost no one can do solar panel cleaning successfully in domestic recently, especially in the western region, the emergence of this solar panel cleaner seems increasingly imminent.

Machine cleaning VS manual cleaning

But why do we use equipment instead of manual cleaning? Theoretically, the efficiency and effect of manual cleaning cannot be compared with machines. Besides, equipment cleaning has better cleanliness and is more economical. Technically, the equipment seems easy for workers to operate. Hence, users do not need to be specially trained or highly skilled to operate. And viewed this way, there is no need for businesses to add additional spending on staffing!

Cleaning steps

Actually, it is simple to operate since there are only three cleaning steps. Firstly, after observation analysis and checking the contamination level of the panels, if it belongs to light pollution, a separate rinse or scrub operation can solve the problem with ease. Secondly, if it belongs to heavy stain, it must be rinsed first to remove the particles and then scrub. Thirdly, after the previous treatment, water cleaning should be arranged.

Operations and staffing

Generally, we work at high altitude with a set of equipment and a group of three people. The ground personnel are responsible for the operation of the main engine and support of the personnel above the building. Two people are required for aerial cleaning. This is not only for safety monitoring, but also for rotation and rest. Hence, such a combination of cleaning efficiency and equipment utilization are relatively high.

Efficiency and benefits

Using revolving brush to clean solar panels has high efficiency and significant cleaning effects. Not only for enterprises to reduce expenses and save costs, but also for photovoltaic power stations that are built in the desert to achieve the purpose of water saving.

Where can I buy solar panels?

The efficiency of solar power guardrail systems

noori — Sat, 07 Aug 2021 07:49:44 +0000

What is solar power guardrail？

With the hot development of the photovoltaic industry, there are precedents to apply solar energy to buildings both at home and abroad. Some foreigners have replaced their balcony railings with solar power panels in order to meet the functions of ordinary balcony railings. They can also supply electricity for their homes, which can be said to kill two birds with one stone.

The advantage of solar power guardrail.

From the outside, there is nothing unusual about the balcony guardrail which looks like a piece of ordinary black glass built with solar panels, but it is undeniable that they have a simple fashion flavor. Besides, this kind of solar guardrail can be used together with electricity supply for ordinary residents to play the role of double insurance. The black glass panels are simple and modern in appearance, friendly to the fashion-conscious, and provide privacy. Solar power guardrail not only has a high appearance level, but also has strong practicability and multi-function. Equally, the price is certainly not cheap. But in the long run, it can be used for more than 20 years so that the cost performance is still very high.