Perdele si draperii

Perdele, draperii, sisteme de prindere, tapiterii, huse, etc.

Re: Perdele si draperii

Mesajde florydogaru » Lun Aug 31, 2015 9:53 am

cum se fac draperiile fata de perdea drepte sau incretite?
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Membru din: Mie Mai 04, 2011 11:34 am

Re: Perdele si draperiiApplication of flow battery vs fuel c

Mesajde tow0403 » Sâm Apr 08, 2023 9:43 am

Pros and cons of flow [url][url]12V Lithium Ion Battery[/url][/url] vs fuel cell ... n-battery/
While a flow battery may be similar to a fuel cell battery they possess similar but also slightly different applications as well. When comparing a flow battery vs fuel cell there are obvious advantages and disadvantages to consider to make the best and most informed decision.

Pros of flow battery
● They have a relatively long cycle life due to their effective system design and electrochemical processes.
● They possess a relatively easy and flexible system layout.
● They are relatively environmentally friendly and do not give off any harmful emissions or toxic fumes.
● Low maintenance requirements.
● High tolerance to overcharging and over-discharging.

Cons of flow battery
● They have relatively low energy density and would require obscenely large size tanks to store usable amounts of energy.
● High cost of the battery due to the large amounts of battery components needed for large-scale energy storage.

Pros and cons of flow battery vs fuel cell
Pros of fuel cell
● They are very efficient sources of energy as they can readily generate energy continuously on demand.
● They are reliable and will remain effective as long as hydrogen fuel is made available within the battery tank.
● They only produce water, steam, and heat as by-products as opposed to toxic chemicals in other forms of battery.

Cons of fuel cell
● High cost of raw materials needed within the battery tanks such as platinum catalyst and other expensive components needed to generate hydrogen.
● They can not store energy like conventional batteries and are hence only good as long as the hydrogen fuel supply is available.
● Fuel cells are highly flammable to the large amounts of hydrogen within the tanks and may cause fire hazards.

Are flow battery and fuel cell better than lithium ion battery in energy storage
We all know that lithium ion is particularly popular for UPS lithium battery and powerwall battery, when comparing a flow battery vs fuel cell, flow batteries have a relatively higher energy efficiency compared to fuel cells and can store energy while fuel cells cannot.

But neither comes close to lithium ion batteries which have much larger capacity and higher energy density making them much better for energy storage than both flow batteries and fuel cells. Lithium ion batteries is relatively high voltage battery compared to flow battery and fuel cell. In practical applications, the output voltage of the fuel cell is only about 1V, the flow battery is up to 1.5V, and the lithium-ion cell can be up to 3.2-3.7V.
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Membru din: Sâm Apr 08, 2023 9:38 am


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