Electrical power providers are generally providing two different tariff structures, the first is called flat rate structure, in which the price for the purchased kWh is fixed, its same over 24hours/7days. And the other structure called time of use, in which the price for the purchased kWh differs from time to other, there will be off peak price and high peak price. Usually, off peak time is in the night, high peak time is from afternoon to the evening, and the normal time is represented by the rest of the day hours, in some areas, the high peak kWh charges may reach 50 cents per each kWh.
1. Based on your installation location and expected whether all over the year, what will be the estimated annual electricity production generated from the solar system in kwh?
2. Of course in summer months, the solar electricity production will be higher than winter months due to the intensity of solar radiation, and the question is: What will be the estimated electricity production in kwh for the worst and best months?
A solar charge controller is used to manage the power from the solar cells to charge the batteries and supply the load in the solar power system. The charge controller protects the batteries from overcharging or deep discharging, so as to guarantee the safety of the batteries, increase the service life of batteries and then improve the solar system performance.
So, really it's worth doing more investigation in your solar system for best sizing a proper solar charge controller. It is the key for longer life and higher efficiency for your battery bank as the charge controller optimizes the power and voltage coming from your solar panels to provide best charging voltage and current to the batteries.
What is the on-grid inverter data sheet? It's a sheet shows the on-grid inverter specs, so can judge if the inverter can be used in our system or not. It's an important matter to be able to read the sheet and understand it before buying the on grid inverter.
As modern technology advances and energy demands continue to grow, power generation equipment has become increasingly essential in both daily life and industrial production. Inverter generators, due to their excellent performance and technical advantages, are becoming a popular choice in the market. This blog will explore the definition, working principles, and key advantages of inverter generators compared to traditional generators, while also analyzing their technological and economic benefits.
Inverter Generator is quiet with smaller size and weight.
It doesn’t pollute the environment because it consumes less fuel.
It can handle motor inrush/surge current at starting period efficiently without oversizing, so lesser Inverter Generator power capacity will perform better than larger traditional generator capacity in cases of using the generator to feed motor-based load.
It's a solar system that is connected and synchronized with the power grid. So, the electrical load will be fed from both sources which share to each other in feeding it.
In cloudy days or at night where the solar system generation is low or even is not exist, the electrical load takes its power requirements from the power grid. And in sunny days where solar generation exceeds load power requirement, the load take all its power requirement form the solar system and surplus solar generated electricity will go to the power grid to be used elsewhere.
The on-grid inverter must match grid sine wave phase and voltage, so can inject the AC current into it. The most important feature of such inverter is its ability to work without batteries, it based on solar panels or wind turbine and power grid presence only, so if the solar energy or wind energy are not sufficient to feed the load, it consumes his power requirements from the power grid.
The horizontal centrifugal pump is required to install the basement. In normal conditions, it is the single-stage end suction port/double-suction pipeline downwards inlet and upwards outlet/horizontal inlet and outlet. The inlet pipe diameter is larger than the outlet pipe diameter. The power can be very high. Its efficiency is higher than the vertical pump, and it has a smaller shock on the pipeline. As to the big pump, it is usually recommended to adopt the horizontal type.
The solar water pump is the heart of solar pumping system, so selecting the good reliable pump is a crucial choice in building your efficient system.
Mainly in the market there are 2 types of solar pumps: AC pump and DC pump.
DC solar pump uses DC motor which works based on direct current supply (such as solar panel or battery), so it does not need an inverter.
While AC solar pumps uses AC motor which powered via solar pump inverter that converting DC getting from solar panels to AC.
Then which one is better, AC pump or DC pump?
The cleaning and maintenance of centrifugal pump parts includes mechanical external cleaning and part cleaning. Part cleaning can be divided into pre-identification cleaning, pre-assembly cleaning and painting or bonding parts cleaning.
Today we will introduce a home solar power system design below 10kW, which is installed on the roof of the house and connected to the grid of 220V or 380V. The maximum installation capacity is 25% of the capacity of the upper-level transformer. First of all, it is required to determine whether the load capacity of the roof can meet the requirements. The loading requirements of the solar power system equipment for the roof are greater than 30kg/m2.
With the constantly advance of industrial and commercial photovoltaics, there are less and less large-scale, flat, facing, unshielded cement or colored steel roofs, and the rest may be multi-angle, multi-oriented, sheltered, multi-structural roofs. How to design solar panel system on the complex roofs? The most concerned issue for designers and investors is to control the cost, ensure the power generation, and be safe and reliable.
The solar PV system is not only environmentally friendly, but also saves money and makes money, becoming a best choice of alternative or backup power source for many families. However, it need proper maintenance, so as to ensure the generating capacity of the system, and guarantee the service life. Do you want a better power generating efficiency and a longer service life of your home solar power system? It should be guaranteed by the sound maintenance.
What is centrifugal pump cavitation?
When the local pressure of the liquid in the pump drops to the critical pressure, bubbles will be produced in the liquid. Cavitation is the whole process of bubble aggregation, movement, division and elimination. The critical pressure is generally close to the vaporization pressure.
The self-priming of the self-priming pump refers to the starting of the pump under the condition that the suction pipe does not need to be filled with water (but there must be enough water in the pump body). It has the function of automatically removing the gas in the suction pipe and entering normal work after a short period of operation. The self-priming pump must be filled with enough water before the first start, and then start again from the water left in the pump body to normal operation.
If you plan to design and install a grid tie solar PV system for your home, you will want to know how much electricity the system can produce each year. Now we will take the roof of 60m2 as an example to make this calculation. At present, the household solar power system generally adopts the monocrystalline silicon solar panel and polycrystalline silicon solar panel. Its specification is generalized as 36V 280W, and the single piece of solar panel generally has an area of 1.8 m2...
With the development of solar power technology, and people's comprehensive considerations and strict requirements for water consumption, water quality, water supply system reliability, and environmental protection, the solar water pumping system has increasingly become the preferred solution to water use because of its easy installation, no labor guard, low cost and zero carbon emission and so on.
The principle that a centrifugal pump can transport liquid is that a high-speed rotating impeller exerts a centrifugal force to the liquid. That's why it is called a centrifugal pump. Before start-up, it is firstly required to fill the pump casing and suction line from the funnel with liquid. When the impeller rotates rapidly, the liquid in the impeller rotates as well under the driving force of the impeller blade, so that the liquid obtains centrifugal force and moves outward from the center of the impeller along the vane flow passage. Afterwards, it is tossed out of the end of the blade, and thrown into the volute or diffusion pipe of the pumping shell(or guide wheel). When the liquid flows to the diffusion tube, the flow speed slows down because the sectional area of the liquid flow expands gradually, and a part of the kinetic energy is converted into a static energy head, the pressure is raised, and eventually pushed out of the discharge tube. At the same time, a partial vacuum is generated at the center of the impeller because the liquid is thrown away, so that the liquid in the sump is continuously sucked into the pump from the source of the suction pipe under the action of the liquid surface pressure. The impeller keeps on rotating, and the liquid is continuously sent from the suction tank to the high level tank or pressure vessel.
Off-grid solar inverters can work independently after leaving the grid, which is equivalent to an independent small grid. It is also similar to a voltage source, which mainly controls its own voltage. Off-grid inverters can be loaded with resistance and capacitance, inductive motors, and other loads. It has quick response, anti-interference, strong adaptability, and practicability features, and is the preferred power supply for power failure and outdoor power supply.
The basic principle of solar water pump system is to use semiconductor solar cells to convert solar energy directly into electricity, and then use various motors to drive water pumps for water lifting from deep wells, rivers, lakes and other water sources. In some small and medium power solar pump systems, brushless DC motor is often used as the driving motor, but in some larger power solar pump systems, asynchronous AC motor is also used as the driving motor. In the case of AC asynchronous motor as driving motor, solar pump inverter(solar variable frequency drive) is usually used to control.
