Understanding Thermoacoustic Engines & Refrigerators (CZE Subtitles)

[@Nighthawkinlight]

Excellent video!

[@AhmadKouta]

I appreciate it and would be so glad to cooperate on future videos!

[@الدعوةالىالله-خ8م]

@@AhmadKouta 🔴 Human Rights and Justice in Islam 🔵 Islam provides many human rights for the individual. The following are some of these human rights that Islam protects. 🔴 The life and property of all citizens in an Islamic state are considered sacred, whether a person is Muslim or not. Islam also protects honor. So, in Islam, insulting others or making fun of them is not allowed. 🔵 The Prophet Muhammad said: {Truly your blood, your property, and your honor are inviolable.} 🔴 Racism is not allowed in Islam, for the Quran speaks of human equality in the following terms: { O mankind, We have created you from a male and a female and have made you into nations and tribes for you to know one another. Truly, the noblest of you with God is the most pious.2 Truly, God is All-Knowing, All-Aware.} (Quran, 49:13) 🔵 Islam rejects certain individuals or nations being favored because of their wealth, power, or race. God created human beings as equals who are to be distinguished from each other only on the basis of their faith and piety. 🔴 The Prophet Muhammad said: {O people! Your God is one and your forefather (Adam) is one. An Arab is not better than a non-Arab and a non-Arab is not better than an Arab, and a red (i.e. white tinged with red) person is not better than a black person and a black person is not better than a red person, except in piety.} 🔵 One of the major problems facing mankind today is racism. The developed world can send a man to the moon but cannot stop man from hating and fighting his fellow man. Ever since the days of the Prophet Muhammad , Islam has provided a vivid example of how racism can be ended. The annual pilgrimage (Hajj) to Makkah shows the real Islamic brotherhood of all races and nations, when about two million Muslims from all over the world come to Makkah to perform the pilgrimage. 🔴 Islam is a religion of justice. God has said: { Truly God commands you to give back trusts to those to whom they are due, and when you judge between people, to judge with justice....} (Quran, 4:58) 🔵 And He has said: { ...And act justly. Truly, God loves those who are just.} (Quran, 49:9) 🔴 We should even be just with those who we hate, as God has said: { ...And let not the hatred of others make you avoid justice. Be just: that is nearer to piety....} (Quran, 5:8) 🔵 The Prophet Muhammad said: {People, beware of injustice, for injustice shall be darkness on the Day of Judgment.} 🔴 And those who have not gotten their rights (i.e. what they have a just claim to) in this life will receive them on the Day of Judgment, as the Prophet said: {On the Day of Judgment, rights will be given to those to whom they are due (and wrongs will be redressed)...}

[@sierraecho884]

Great video, very short and well explained.

[@kifuruguta2248]

Thank you for this excellent video !

[@jamesdim]

Great explanation! Thank you!

[@dkby]

Quality content, thanks

[@山梨酸钾]

excellent!

[@Sol-En]

Great video ! Do you do scientific research in thermoacoustic ?

[@송시원-y4q]

Is the frequency of the piston the same as the closed tube frequency? Or what is the frequency of the piston related to?

[@AhmadKouta]

Not necessarily the case. However, it is possible to match the frequency of the piston to the resonance frequency of the system (resonator tube) to achieve optimal performance. This is known as lock-in or synchronization. When the frequency of the piston is close to the resonance frequency of the system, the energy input to the system will be most efficiently converted into thermal energy, resulting in the highest temperature difference between the hot and cold end of the system.

[@igorigor5973]

How to calculate thermoacoustic engine efficiency?

[@AhmadKouta]

The efficiency of a thermoacoustic engine is equal to the acoustic power (desired output) divided by the hot heat flux (required input).

[@BobSmith-yq1gb]

What size acoustic Refrigeration can be used on a refrigerator and is it cost effective

[@AhmadKouta]

Most prototypes are used for research and experimenting and are not available for commercial use. However, in regards to sizing, total length varies around 60cm with the large diameter equal to that of the loudspeaker. But it could not yet compete with conventional units due to its lower efficiency and power losses.

[@tombouie]

I understand it works empirically; However ?how can I derive the thermoacoustic effect? from well-establidhed physics For ex: ?how the heck does the temperature gradient cause a sound wave?

[@laurencerilling5873]

The heated gas can only expand so much, and is cooled in the stack. So it reverses direction and is heated again. This bounce back and forth is sound, the tone depending on the length of the tube

[@dantronics1682]

Can you explain how the candle gives off hydrogen

[@AhmadKouta]

A hydrogen flame was used by the scientist experimenting and not a candle. The point however is to show that the heat source (hydrogen flame, wired mesh, etc.) is the reason for the sound emitted.

[@deinemutter758]

❤Hammer❤ thank you it's amazing. The idea it's just genius ❤

[@tiredironrepair]

Around what globe?

[@laurencerilling5873]

Earth Gaia Urantia Terra …

[@tiredironrepair]

@@laurencerilling5873 I can see divergent sun rays indicating a close sun and a level horizon where innumerable islands and mountains can be seen at distances well past the point that could be seen if earth were a globe. Maybe look into it

[@tombouie]

Good-Stuff

[@plugplagiate1564]

do not forget the rectifier, ... 🙂

[@hallowedchild5022]

Sounds like that needs alot of Ai modling replacing the speaker with a modified tuning fork made of carbon nanotubes to keep the acoustic wave ossolating inside the modified heat synch resonance chamber with a little bell like system to get it going with a shake and let it rest... ideas no workshops

[@forhadahmed4643]

not useful in daily used refrigerator or air conditioner...

[@MostConscious]

Huh

[@deinemutter758]

❤Hammer❤ thank you it's amazing. The idea it's just genius ❤