Question

1. What do you understand about Thermodynamics System? Please explain.

2. Find ONE system around your daily life that related to Thermodynamics and take a SELFIE with it. ( Car engine )

3. Explain how that system works (must include all Thermodynamics explanation) and involve which Thermodynamics CYCLE?

4. Suggest how to improve the efficiency of that system.

Answer 1

-}* Themengonomic System to energy ow. Suslem - Certainly quontla cf maltor or the spore which 5 is under their medyamic study or arolysis is called o thermodganic system Bandong o es: banday Sustent) Scanranding Scerranding energy Nomoss transfer a. I is basically a defined as a quantity of matter or a region in Spore; the attention is concentrated of a problems, everything external to scassandring is known as Crvioyment: e Boonday Seprades system from canyaanding ] Cor-engine/otto cgcle : 2 3 Ottocycle is a gas Pauen Cucle : [Working] e that is used in spark ignition Cmcolor patid Ergine). - This cycle was introduced by; dr. Nikolaus Cho, a German Ergineer. · An Cho cycle consist of ficam process 0 Two isentropic Geversible adiabatc) process @ Two isochovic C constant velime) process: 0 1 1 2 cs Scanned with CamScanner

Inose process can be understocd if we understand PuzTs diagram VVV nevno 2t Boat Vs. Veo Clerance volume : Vgs stroke Volume Bocess in otto rycle Precessi-2: I sentropic compression) In this process, the piston movies from bottom deod cendré CBOC) to top dead centre CTDC) position - Aix undergoes revesible adicbate Cisentropic) compresory Cue know that compression is a process in which volume decreases & pressure increases; Hence in the procers, volume decreases from vi to Vz & pressure incrocie freon P, to pa ; & Tempreature changes from Titola Process 2-3 : Carstad Velme Heat Addition · Process 2-3 is isochaic CCV) heat addition procesu Here, piston remains at top dead cenbe for a moment; Heat is added at constel volume Cleava) from external heat source & Temp increase from Tz to T3 e entropy increase from Sa to Sg cs suppet wmn CC T2 - 75) CamScanner

Process : 3-4 Isentoopr expansion In this processi, air un adiabatic) expansion dead cerro CTOC) Here pressure Process', Gis undergces isentropic Greversible expension, The piston is pushed from top Conho CTOC) to bottom Coleod)cente CBDC), se pressure deceases from Pg to pay ; volume rises sto Va, temperature fells from Iz to The i volime visas fer entopy remain Constant locors hel: Constat Volume Heat Rejection The piston rests at BDC for a moment and heat is rejeded at constad reline Cheavi); In this - Process; prossure falls from Pry to pi; temperature decreases from Ty te ti & entropy remains constat pei = m CvCT4-T) ?T"** 4 Method to incsecse effeciency: Totes ] Flea composion ratio o • Run engine fuel-lem', that is use excers air; It is celll Known that feel-leon running improves, effeciency • Higher compression rato •Ron the engine at optimum coon; meaning low Richon & low pumping work. Scanned with CamScanner