Of course what we have here is storage of heat capturing the 'latent heat' when the wax melts and then gives back as it solidifies. I have carried out some experiments myself using normal paraffin wax, it would be better if we could use a wax that melts around 21deg C. Of course insulation of the storage vessel would be important whether using wax/air or wax/water. Anyone who knows of a low temp melt wax, that would be useful. Various salts will give this affect but tend to separate when melted then not work well. Interning video. Bedankt.
Sunlight is our cheapest source of heat. To store it for long winters and short summer's is the key. But this type of heat storage has to be deep in insulation, the best would be the earth itself. The material would have to be one that becomes another type of material, stored deep within the earth. Even if the loss doesn't amount to much, the chemical reaction to release the heat would be a hazard and in the earth is, not only going to keep heat but it would be safer when the release is initiated. The release would be an action that would be all the heat is released at once, promoting a large area that would act like a balloon type affair where it is well insulated and in the ground, so you would have two stages in the use of the heat, one storing it efficiently, and with a reaction introduced giving most or all of the heat to a holder , which then can be controlled in the way and amount of heat that you need for the building it is to heat. I am considering a liquid such as in the type used as brake fluid. Inside with the brake fluid is a basically an attraction for heat and the fluid is the carrier. The reaction catalyst could be tiny amounts of a member of the chlorine family. Now this combination is already explosive, but it isn't creating the heat but causing the separation of the heat from the fluid. We are used to thinking of heat as a living thing in itself but it is not really, it is something that can integrate into just about anything. You can be hot or stuff like ice can be melted, what correlation does ice and yourself have? Thus heat is something movable by transfer to another device or place. To look at the whole situation we are not taking heat seriously and don't collect all the heat that is being given off to the air or whatever it is in contact with, such as sewer water, the sewer water is coming from heated buildings all day also the water used for washing and cleaning is electrically or fossil fuel heated, and then that heat is just dumped into the sewer. At great loss of free heat. I could go on but I am tired.
Using water, how would you capture the waste heat from a refrigerator & transport it to an aquifer/PCM? In general, water/water heat exchanger can be used to transfer the heat from one circuit to another. For an aquifer a heat exchanger is required, as the underground circuit should be a closed circuit, not allowing ground water to be extracted.
Hi Leonardo, Thank you very much for this highly informative presentation. I am quite interested in knowing more about this technology. Could u please explain how u would go about transfering the heat to the storage? For example, using water, how would u capture the waste heat from a refrigerator & transport it to an aquifer/PCM? My refrigerator supplies waste heat continuously every hour. How do u size the aquifer/PCM? How long can the heat be stored? How can the stored heat be extracted? etc.
How can the stored heat be extracted? The extraction again is with heat exchanger, in the case of PCM or aquifers. With TCM, dedicated heat/mass transfer devices should be used. At the moment, these are the subject of several R&D projects, aimed at finding the proper technology and optimal control for such device.
How long can the heat be stored? For aquifers, a heat loss of 40 to 50% over a season must be accounted for. For PCM, it depends on the level of thermal insulation of the storage. For normal insulation levels, the storage time should not be longer than a few weeks, as losses dominate after that time. For TCM, the storage losses can be minimal, making these technologies very suited for long term storage.
How do you size the aquifer/PCM? The sizing of the storage is very much determined by the application: what is the heat demand pattern in the system. In general, system simulation software, like TRNSYS, is used to determine the optimum size of the storage.
Very informative. This has answered some questions I have had for a while now. Thank you.
Of course what we have here is storage of heat capturing the 'latent heat' when the wax melts and then gives back as it solidifies. I have carried out some experiments myself using normal paraffin wax, it would be better if we could use a wax that melts around 21deg C. Of course insulation of the storage vessel would be important whether using wax/air or wax/water. Anyone who knows of a low temp melt wax, that would be useful. Various salts will give this affect but tend to separate when melted then not work well. Interning video. Bedankt.
Sunlight is our cheapest source of heat.
To store it for long winters and short summer's is the key.
But this type of heat storage has to be deep in insulation, the best would be the earth itself.
The material would have to be one that becomes another type of material, stored deep within the earth.
Even if the loss doesn't amount to much, the chemical reaction to release the heat would be a hazard and in the earth is, not only going to keep heat but it would be safer when the release is initiated.
The release would be an action that would be all the heat is released at once, promoting a large area that would act like a balloon type affair where it is well insulated and in the ground, so you would have two stages in the use of the heat, one storing it efficiently, and with a reaction introduced giving most or all of the heat to a holder , which then can be controlled in the way and amount of heat that you need for the building it is to heat. I am considering a liquid such as in the type used as brake fluid.
Inside with the brake fluid is a basically an attraction for heat and the fluid is the carrier.
The reaction catalyst could be tiny amounts of a member of the chlorine family.
Now this combination is already explosive, but it isn't creating the heat but causing the separation of the heat from the fluid.
We are used to thinking of heat as a living thing in itself but it is not really, it is something that can integrate into just about anything.
You can be hot or stuff like ice can be melted, what correlation does ice and yourself have?
Thus heat is something movable by transfer to another device or place.
To look at the whole situation we are not taking heat seriously and don't collect all the heat that is being given off to the air or whatever it is in contact with, such as sewer water, the sewer water is coming from heated buildings all day also the water used for washing and cleaning is electrically or fossil fuel heated, and then that heat is just dumped into the sewer.
At great loss of free heat. I could go on but I am tired.
Using water, how would you capture the waste heat from a refrigerator & transport it to an aquifer/PCM?
In general, water/water heat exchanger can be used to transfer the heat from one circuit to another. For an aquifer a heat exchanger is required, as the underground circuit should be a closed circuit, not allowing ground water to be extracted.
Hi Leonardo,
Thank you very much for this highly informative presentation. I am quite interested in knowing more about this technology.
Could u please explain how u would go about transfering the heat to the storage?
For example, using water, how would u capture the waste heat from a refrigerator & transport it to an aquifer/PCM?
My refrigerator supplies waste heat continuously every hour.
How do u size the aquifer/PCM?
How long can the heat be stored?
How can the stored heat be extracted? etc.
Very nice presentation. Thanks for sharing.
How can the stored heat be extracted?
The extraction again is with heat exchanger, in the case of PCM or aquifers. With TCM, dedicated heat/mass transfer devices should be used. At the moment, these are the subject of several R&D projects, aimed at finding the proper technology and optimal control for such device.
How long can the heat be stored?
For aquifers, a heat loss of 40 to 50% over a season must be accounted for.
For PCM, it depends on the level of thermal insulation of the storage. For normal insulation levels, the storage time should not be longer than a few weeks, as losses dominate after that time.
For TCM, the storage losses can be minimal, making these technologies very suited for long term storage.
How do you size the aquifer/PCM?
The sizing of the storage is very much determined by the application: what is the heat demand pattern in the system. In general, system simulation software, like TRNSYS, is used to determine the optimum size of the storage.
i know it's pretty off topic but does anyone know of a good website to watch new series online ?
@Rowen Daxton try flixzone. Just google for it :)
@Rodrigo Benton Definitely, been using FlixZone for since april myself :D
@Rodrigo Benton yea, I have been watching on flixzone for months myself =)
@Rodrigo Benton Definitely, I have been using Flixzone for since march myself =)
nice webcast bro
what is means by ets rooms
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