Assalamualaikum warahmatullahi wabarakatuh, I am MUHAMMAD FARHAN ISYMAL BIN HILMAN @ ZUBAIR (13DEM19F1037) and i want to share some of the knowledge that I have learned before. The topic I want to share is called 'ISENTROPIC'. In thermodynamics, isentropic is an idealized thermodynamic process. ISENTROPIC PROCESS The isentropic process is called reversible, adiabatic process . Entropy change is caused by heat transfer and irreversibilities . Heat transfer to a system increases the entropy, heat transfer from a system decreases it. The effect of irreversibilities is always to increase the entropy. In fact, a process in which the heat transfer is out of the system may be so irreversible that the actual entropy change is positive. Friction is one source of irreversibilities in a system. The isen tropic and is called adiabatic, reversible process is a constant entropy proces
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Assalamualaikum , nama saya Huwaida Bt Mohamad Madani (13DEM19F1029) , Pada 15.03.2020 , saya telah mempelajari tajuk yang berkaitan dengan Second Law. Konsep second law ialah untuk mengeluarkan haba. Ianya terbahagi kepada dua iaitu heat engine dan reverse heat engine. Pada kali ini saya ingin menerangkan tentang reverse heat engine. Terdapat dua contoh bagi reverse heat engine iaitu heat pump dan refrigerator. REVERSE HEAT ENGINE Formula bagi reverse heat engine bagi heat pump ialah C.O.P = Qh / Win manakala formula bagi refrigerator ialah C.O.P = Ql / Win. Kesimpulannya , ialah e njin haba terbalik adalah peranti yang memindahkan tenaga dari objek pada suhu yang lebih rendah ke objek pada suhu yang lebih tinggi dengan melakukan kerja pada sistem. Ini pada asasnya membalikkan proses yang berlaku di dalam enjin haba, di mana tenaga mengalir dari yang lebih tinggi ke suhu yang lebih rendah dan kerja dihasilka
Assalamualaikum , nama saya adalah Siti Nurasyiqin binti Mohd Radzuan (13DEM19F1033).Pada 15/3/2020 , tajuk yang saya pelajari adalah Second Law Konsep second law ialah untuk mengeluarkan haba . Terdapat dua jenis iaitu heat engine dan reverse heat engine. Heat reservor terbahagi kepada dua iaitu hot (suhu tinggi) dan cold ( suhu perlahan) . HEAT ENGINE CANOT CYCLE Formula yang saya pelajari untuk heat engine ialah :
Assalamualaikum, my name is Muhammad Al-Hasyir bin Mohd Wazir(13DEM19F1021). Today I will explain about experiment 2 : Flow Measurements, Apparatus Hydraulic bench Stop watch Screw driver or pen SOLTEQ Flowmeter Measuring Apparatus Experimental Procedures Fully close the control valve and fully open the discharge valve. Ensure the discharge hose properly directed to sump tank. Also ensure the collection tank drain hole is open to allow flow discharge back into sump tank. Fill sump tank with 3/4 full of water. Start up the pump supply. Slowly, open the control valve until its approximately half open. At this point, water flowing from sump tank to the flow apparatus and discharge through into collection tank. Wait until there is no trapped bubble in the system. Adjust the discharge and control valve until rotameter reach desire reading. By using the air bleed screw ( staddle valve ) , adjust water level in the manometer board ( using screwdriver or pen ).
ASSALAMUALAIKUM, Saya NURUL ATIKAH BINTI KAMARUDDIN(13DEM19F1056) dari kelas DEM2SI. Saya disini ingin berkongsi sedikit ilmu yang saya perolehi dari subjek ini, iaitu subjek thermofluid. Subjek ini kebanyakan orang mengatakan ianya agak mencabar atau lebih dalam lagi agak susah. Disamping itu saya juga didedahkan dengan pelbagai jalan kira..ataupon cara cara untuk menyelesaikan masalah dalam bab ini. Tidak lupa juga sub topic iaitu steam power yang mempunyai 4 kitaran ia merupakan boiler,turbine,condesser dan pump. Dalam subtopic ini juga saya dapat tahu cara untuk mengira 4 kitaran tersebut dengan equation yang telah diajar. Saya ingin mengulas tentang boiler dan turbine.. Boiler merupakan salah satu peralatan proses yang berfungsi memproduksi steam. Steam yang dihasilkan tersebut akan digunakan untuk berbagai keperluan, antara lain sebagai penggerak turbine dan sebagai media pemanas dalam unit proses.Turbin pula adalah peranti di mana cecair mengembang. Semasa kerja pengemba
Assalamualaikum w.b.t, saya MOHAMMAD ARIFF FARHAN BIN ZULKARIA (13DEM19F1035) dari kelas DEM2S1 ingin menceritakan tentang PRESSURE AND DEPTH yang dibentangkan oleh ENCIK ROSHAIZUL NIZAM BIN SANI. If your ears have ever popped on a plane flight or ached during a deep dive in a swimming pool, you have experienced the effect of depth on pressure in a fluid. At the Earth’s surface, the air pressure exerted on you is a result of the weight of air above you. This pressure is reduced as you climb up in altitude and the weight of air above you decreases. Under water, the pressure exerted on you increases with increasing depth. In this case, the pressure being exerted upon you is a result of both the weight of water above you and that of the atmosphere above you. You may notice an air pressure change on an elevator ride that transports you many stories, but you need only dive a meter or so below the surface of a pool to feel a pressure increase. The difference is that water is much denser
assalamualaikum,saya MUHAMMAD HAFFIZZUDDIN BIN ABU HASSAN ingin berkongsi sedikit ilmu yang telah saya pelajari dalam kelas thermofluid kepada anda semua .Tajuk yang akan saya kongsikan kepada anda adalah 'PRESSURE AND DEPTH'. Pressure and depth have a directly proportional relationship. This is due to the greater column of water that pushes down on an object submersed. Conversely, as objects are lifted, and the depth decreases, pressure is reduced. This relationship between pressure and depth may be looked at with respect to the relationship between pressure and volume, as the column of water has a specific volume and corresponding to depth. Boyle’s Law describes the relationship between pressure and volume: The product of pressure and volume is a constant (PV=k). While Boyle’s Law refers to gases, it is significant to recall that both gases and liquids are fluids, and thus follow the same rules of behavior. objective To ditermine relationship between pressure and dep
Assalamualaikum w.b.t Saya NOR NISHA ATHIRAH BINTI AZMI (13DEM19F1007) ingin berkongsi sedikit ilmu yang telah kita semua pelajari baru-baru ini. Saya ingin menceritakan dan berkongsi sedikit sebanyak tentang 'ISOTHERMAL PROCESS'. An isothermal process is a change of a system, in which the temperature remains constant: ΔT =0. This typically occurs when a system is in contact with an outside thermal reservoir (heat bath), and the change in the system will occur slowly enough to allow the system to continue to adjust to the temperature of the reservoir through heat exchange. In contrast, an adiabatic process is where a system exchanges no heat with its surroundings (Q = 0). In other words, in an isothermal process, the value ΔT = 0 and therefore the change in internal energy ΔU = 0 (only for an ideal gas) but Q ≠ 0, while in an adiabatic process, ΔT ≠ 0 but Q = 0. Simply, we can say that in isothermal processes T = constant ΔT = 0 dT = 0 while in adiabatic proce
Assalamualaikum w.b.t Saya NUR ATHIRAH BINTI YUSLI (13DEM19F1003) ingin berkongsi sedikit ilmu yang telah saya pelajari baru-baru ini. Saya ingin menceritakan dan berkongsi sedikit sebanyak tentang 'ISOBARIC PROCESS'. An Isobaric process is a thermodynamic process in which the pressure stays constant: ΔP = 0. The heat transferred to the system does work, but also changes the internal energy of the system. This article uses the physics sign convention for work, where positive work is work done by the system. Using this convention, by the first law of thermodynamics, The yellow area represents the work done Q = ΔU−W where W is work, U is internal energy, and Q is heat.[1] Pressure-volume work by the closed system is defined as: W = ∫pdV where Δ means change over the whole process, whereas d denotes a differential. Since pressure is constant, this means that W = pΔV Applying the ideal gas law, this becomes W = nRΔT assuming that the
Assalamualaikum w.b.t Saya CHE NUR SYAKIRAH BINTI CHE MOHD (13DEM19F1009) ingin berkongsi sedikit ilmu yang telah kita semua pelajari baru-baru ini. Saya ingin menceritakan dan berkongsi sedikit sebanyak tentang 'Polytropic Process'. where p is the pressure, V is volume , n is the polytropic index , and C is a constant. The polytropic process equation can describe multiple expansion and compression processes which include heat transfer. There are an infinite number of reversible polytropic paths between two given states; the most commonly used polytropic path is T dS/dT=C1 where T is Temperature, S is Entropy, and C1 is a constant and is equal to zero for an adiabatic process. This path is equivalent to the assumption that the same amount of heat is transferred to the system in each equal temperature increment. In a reversible process following this polytropic path the heat and work transfer are as follows: Q=C1(T2-T1) and W=(H2-H1)-Q where H is Enthalpy. Ma