Dandy Adityas

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Name: Dandy Adityas NPM: 1706064340

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23/02/2021 :

Selamat sore hari ini kabar saya baik

In my opinion, Justice is equality to all people, But Justice is diversity, the difference to all people aspects and economical background are justice, and people potential is different for every people.For example if someone born as a rich person he must have a better impact to society, like he must use his potential to help people, and people with low economical background need to do their best to survive. So justice means equal in every people potential and diversity.

How i explain energy for elementary School kids. So in general energy is the ability to do work, i will explain this to elementary school as we must have energy to move something or do something. I will also explain that energy can't be destroyed or created. So i am going to say to them that energy will convert. For example if we hungry we feel tired, because we don't have energy. We convert food as an energy to move our body so we are not tired anymore.

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The structure of the combined cycle power plant model is shown in Fig. 6.8: (1) gas turbine; (2), (4), and (6) HP super-heaters; (3), (5), and (9) IP super-heaters; (11) LP super-heater; (7) HP evaporator; (12) IP evaporator; (16) BP evaporator; (8), (10), (13), and (15) HP economizers; (14) IP economizer; (17) LP economizer; (18) HP drum; (19) IP drum; (20) LP drum; (22) HP pump; (21) IP pump; (23) LP pump; (24) HP steam governor valve; (25) IP steam governor valve; (26) HP steam turbine; (27) IP steam turbine; (28) LP steam turbine; (29) volume; (30) condenser; (31) HP drum-level control; (32) IP drum-level control; (33) LP drum-level control; (34) HP evaporating loop; (35) IP evaporating loop; (36) LP evaporating loop; and (37) electric generator.

24/02/2021 :

The Brayton cycle is a thermodynamic cycle that describes the workings of a constant-pressure heat engine. The original Brayton engines used a piston compressor and piston expander, but more modern gas turbine engines and airbreathing jet engines also follow the Brayton cycle. Although the cycle is usually run as an open system (and indeed must be run as such if internal combustion is used), it is conventionally assumed for the purposes of thermodynamic analysis that the exhaust gases are reused in the intake, enabling analysis as a closed system.

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Source : Wikipedia

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Di pertemuan ini saya belajar tentang software open modelica dan cara membuka library dari open modelica


02/03/2021 :


A system is a group of interacting or interrelated entities that form a unified whole. A system, surrounded and influenced by its environment, is described by its boundaries, structure and purpose and expressed in its functioning. Systems are the subjects of study of systems theory.

energy conversion, is the process of changing energy from one form to another. In physics, energy is a quantity that provides the capacity to perform work (e.g. Lifting an object) or provides heat. In addition to being converted, according to the law of conservation of energy, energy is transferable to a different location or object, but it cannot be created or destroyed.

Source : Wikipedia


03/03/2021 :

Gas turbines are also Brayton engines, with three components: a gas compressor, a burner (or combustion chamber), and an expansion turbine.

Ideal Brayton cycle:

isentropic process – ambient air is drawn into the compressor, where it is pressurized.

isobaric process – the compressed air then runs through a combustion chamber, where fuel is burned, heating that air—a constant-pressure process, since the chamber is open to flow in and out.

isentropic process – the heated, pressurized air then gives up its energy, expanding through a turbine (or series of turbines). Some of the work extracted by the turbine is used to drive the compressor.

isobaric process – heat rejection (in the atmosphere).


Actual Brayton cycle:

adiabatic process – compression

isobaric process – heat addition

adiabatic process – expansion

isobaric process – heat rejection

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Source : Wikipedia


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