Question

my text book is THERMO DYNAMICS AN ENGINEERING APPROACH EIGHTH EDITION

please i want answer based on this book

Problem #1: Make a table to compare between different refrigerants

Problem #2: Summarize the main key points of section 11.7 HEAT PUMP SYSTEMS (One page exactly)

Problem #3: Summarize the main key points of section 11.8 INNOVATIVE VAPOR-COMPRESSION REFRIGERATION SYSTEMS (one page exactly)

Answer 1

R-410A 2-22 D ) Refferred to as H Pureni 3 Does not overheat a) can work at higher Referred to as . 47 Freda 2 jf overheat 9 relatively of less pressure pressure 4) can handle better stroj 4) dels compare to R-4100 | use mineral oil for lubrication : 6 not contributes. $)yse synthetic oil for lubrication c) does not contribute to the & depletion of the lozone layer , 77 Absorb & release heat better 3) Efficient to use. g) In use 10 noes not crack eavily 7 les compare to 12-410 A.. 8) less efficient: q no longer at we o con crack easily compare to R-410A

* Heat Pump System = Heat pump is opposite of a heat engine. - Heat pumop transfers heat from a body of lower temperature to Hat of higher temperatures by having work done on it'. - It design to more Hiermal energy opposite to the direction of spontaneous heat Floo by absorbing break from or cold space and releasing it to a coarmer one: - It uses some amount of external power to'. accomplish the work of transfering energy 2 from heat source to the heat sink a -Heat pump is a device that helps the room to hotter? - It-tave multiple heating sources such as, radiant Floor, beating/cooling, central air handlers for Force gir; split fan coils for individual room beating, low-temperature radiators; hot tub klorks on pöiaciple of four phases of reverse Carn of cycle, has 4. sections : Exaporator, compressora Condenser & expansion value.

* Innovative Vapour - Compression Refrigeration System :- - It employs a heat engine run backcoord, so heat energy is taken from a cold reservoir - It uses too - stage casca de gefrigeration system with some refrigerant in both stages. - The evaporation phase is what creates the cooling in any vapour compression _34stem. - It admito liquid refrigerant and converts jet inte o vaporr absorbing beat at low temperature and pressure. - Compressor to rise pressure & temperature of the vapor, then a condenser mejecting ... heat at high temperature to get liquid refrigerant and finally a thertle to bene lower pressione di temperature of the liquid. Then the cicle de beglas 99910 in the exaporatori - widely used methods for air-conditining of buildings and automobiller Components In Compressor condenser Hermal expansion valve/throttle evaporator