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How to aerate GRAIN with SOLAR energy? In this last post # 3 of this series, I’d like to share with you some ideas about solar PV to ventilate cereals. (See post # 1 and post # 2 of this series for further understanding). DRYING Process. If you have opted for a small investment (fans of 0.1 …
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Are you a FARMER cultivating SEEDS? Do you have NO ELECTRICITY in your FARM? How to DRY and COOL your GRAIN with PHOTOVOLTAICS ? Electricity with Photovoltaic Modules. You need electricity to operate the fans. If you are not connected to the grid, a photovoltaic solar system may be the solution to your problem. In this post # 2 I explain …
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Are you a FARMER growing CEREALS? Is your FARM electrical OFF-GRID? How to AERATE your GRAIN in the silo with SOLAR PV? Conservation of the Grain. The grains continue to live in the silo, after harvest. Like any living organism, the grains breathe, gradually increasing the temperature inside the silo, especially if the humidity is high. …
Is your RURAL home ISOLATED from the electric line? Small renewable energy are only profitable off-grid, as they have small size, need accumulation and can not be simultanousely from different sources.Do you doubt to connect your FARM to the MAINS? The electric line is more cost competitive in kWh per variety in the mix of …
Are your SOLAR BATTERIES run out of electricity in your FARM?
Do you want to SAVE stationary batteries in your remote RURAL housing?
In this last post # 10, I summarize the different ways to save on electric accumulators of a photovoltaic or mini-wind system that I have explained in previous posts in this series:
1. – Solar Batteries are expensive.Stationary batteries are really necessary in any system isolated from the mains. Absolutely. But when the accumulation needs are high, investment in batteries is unsustainable. Therefore we must seek alternatives to supplement the storage of energy.
2. – Saving and Energy Efficiency.The cheapest electricity is which is not consumed. You should review what are the appliances, equipment, machinery, etc. reasonable to have or not in an isolated home. Once you have choosen the essential minimum, look to be efficient electrically, with very low consumption. Your battery will thank you.
3. – Fuel generatorA small diesel generator to complement a stationary battery bank can be the most realistic option to reduce the costs of investment in batteries. You just have to know how to manage the load periods to give more priority to renewable energy and spend a minimum of oil.
4. – Increase Photovoltaic or Wind capacityThe capacity of production (photovoltaic or small wind generation) is more important than storage capacity (storage batteries). If your budget is very restricted, it is better to prioritize the generation than accumulation.
5. – Micro-hydraulic closed circuitAn alternative energy storage systems of medium size is a closed loop of water. First step: the water is pumped by a Solar PV to a higher deposit. Second step: Water falls through a micro-hydraulic turbine to generate electricity to charge the batteries.
6. – Compressed airA mini wind power system can trigger an air compressor in a large air-storage tank. Electricity can be generated subsequently again with an air motor. There are few experiences, but is feasible in rural areas, plenty of space available.
7. – Hydrogen and Fuel CellsAn electrolysis in a rural area that can generate hydrogen from renewable energies is the first part of the system. The second part is a fuel cell fed with hydrogen and oxygen to generate electricity and steam. It may be the technology of the future, although currently still under development to lower costs.
8. – Sodium Accumulators?Low cost batteries with sodium salts may be in the future an inexpensive system of direct accumulation of electricity. Batteries are currently still very large working at high temperatures.
9. – Flywheel and other systemsA large heavy wheel at high speed can build up energy that can be transformed later into electricity. Also there are a variety of systems to store energy or electricity in development.
To conclude this series of posts dedicated to saving solar batteries I remember the following priorities:
A) Savings and energy efficiency in the isolated systems. Generate and accumulate the electricity itself is expensive, so spend what is really basic.
B) Find a good professional with experience in Solar PV in your area to help you correctly size the system and stationary batteries.
Dou you think you can save batteries with any of these solutions? What experience do you have? Thanks for posting your opinion!
Are you FARMER and need to accumulate renewable ELECTRICITY? Would you spend less on BATTERIES in your RURAL isolated home? Meet other options to accumulate power in this post # 9 of the series “Battery Saving”. Flywheel A heavy flywheel is first accelerated, then it keeps turning at high speed, and afterwards gives again energy to …
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Do YOU have a WINE CELLAR ISOLATED from the mains? What energy do you use to control the FERMENTATION? Do you know that solar PHOTOVOLTAIC can help YOU? Alcoholic fermentation: temperatures. The alcoholic fermentation is the process by which the sugars contained in the wort are converted to ethyl alcohol. The yeasts, microscopic fungi that are found …
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Do you want to STORE ENERGY on your FARM? Don’t you want to spend too much on BATTERIES? Will HYDROGEN FUEL CELLS be the solution? Future technology for Rural areas I’ll say it clear. Hydrogen fuel cells are NOT currently a viable economic solution. But it will be in the future, when electrolysis and fuel cell technologies …
Do you work in a FARM or live in a isolated COTTAGE? How to SAVE BATTERIES in your solar or wind power system? Pumping water in a closed circuit, accumulating energy and generating afterwards electricity with micro-hydro. Solar PV or small wind power to raise water to a higher level We have an installation with photovoltaic modules or …
Have you a POULTRY FARM of laying eggs hens? Have you problems of EGGS PRESERVATION because your farm is OFF-GRID? Do you know that RENEWABLE ENERGY could be your solution? Conservation of fresh eggs Laying poultry farm selling eggs to ovo producers must be very careful about cold storage of eggs. According to temperature, an egg can …
Higher accumulation or higher generation? What can YOU do to spend less on batteries accumulation? For example, we need to invest for four days autonomy without sun: Is it preferable to invest a lot in batteries to be parcially full, or is it better to have an adjusted Amp/h accumulation, but starting with 100% charge …
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Additional fuel generator Attach a diesel generator to a photovoltaic system is the most cost-effective to replace a portion of the capacity of the batteries. It may seem environmentally unfriendly, but it is more realistic from the economic point of view. Imagine that we have calculated a standalone installation that can continue to provide electricity …
Saving electricity consumption We have to drastically reduce our electrical consumption, if we want to minimize the initial investment in storage battery in a stand-alone photovoltaic installation. The cheapest electricity is which is NOT consumed. Some examples of savings: - Lighting .- Do we need lights on simultaneously in every room? I’m not saying you have to …
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Solar panel We can see some plate black panels on the roofs of the houses. People know they are renewable or alternative energies, but few know exactly how it works. The term solar panel is confusing and unprofessional, because there are actually two very different uses of the energy coming from the sun: Photovoltaic module -> Electricity There are …
Why renewable energies are not suitable for cities? Because cities do not give the optimal conditions for Weather or environmental phenomena that are the basis of renewable energies: spacious, sun and wind in abundance, availability of land or forest resources. Let us examine: Sol (photovoltaic and solar thermal) A solar installation needs a wide space on the roofs, …
In the previous post I explained that in hot weather, cows eat less and produce less milk. The solution is to cool them with fans, sprinklers or evaporative coolers. Photovoltaic system to generate electricity for chillers What happens if you have NO grid electricity on your farm? You can have your cows cool if you …
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Heat stress in cows The optimum room temperature for milk production is between 13 º and 18 º C. Above 25 ° C, the cow is in heat stress, with these consequences: – Decreased food intake (not to further increase its body temperature) - Decreased reproductive rate and milk production. The profitability of YOUR dairy …
