The properties of a unidirectional graphite/epoxy lamina are given in Table 2.1. The desirable combination of properties for a... Posted the probability of success for each well is 0.40, independent of the results for any other well using the binomial distribution, Log into your existing Transtutors account. Read More: MCQ Type Questions and Answers. A refrigerant is a compound that goes under a phase change from a gas and liquid and then back. Calculate the power of pump used in the system. 3M c What are the desirable properties of an ideal refrigerant 3M d Define and from CSE 509 at Sri Sivani College of Engineering Submit your documents and get free Plagiarism report, Your solution is just a click away! For some resistors it is important to have low noise properties. Desirable properties. See the answer. B. A. Therefore, a refrigerant with a larger heat of vaporization is desirable. Key properties of the main refrigerants are given in Table 3.1 together with their typical application ranges; low, (−25 to –40°C) medium, (−5 to –25°C) and high temperature (+10 to –5°C). 5 years ago, Posted High Vapor Density. [All of These] 7 people answered this MCQ question All of These is the answer among All of These for the mcq The desirable property of a refrigerant is What is a Refrigerant; desirable properties of a refrigerant; Commonly used refrigerants are Carbon dioxide, sulphur dioxide, ammonia, Freon-11, Freon-12 and Cryogenic refrigerants. B. The desirable property of a refrigerant is. The specific heat of liquid should be as small as possible and of vapour should be as high as possible to give less superheating of vapour. A/F ratio of 13 is for maxim, Which of the ceramics can be used as pigment in paints? A refrigerant should have high enthalpy of vapourisation, low freezing point, high thermal conductivity & low compression ratio, @Copyright 2018 Self Study 365 - All rights reserved, The desirable properties for a refrigerant include, Low compression ratio & Freezing Point, The tail stock set over method of taper turning is preferred for The t, A/F ratio of 13 is for which operation ? An Carbon/Epoxy [0/±45/90]S laminate is analyzed. Answer: Option D . C. High latent heat of vaporisation. Previous question Next question Carbon Dioxide is a greenhouse gas but an excellent refrigerant due to its high cooling capacity. R-12 refrigerant, once the most popular refrigerant on the market, was banned in the early 1990’s for contributing to the greenhouse gas effect and all production ceased in 1994. What Are The Desirable Properties Of An Ideal Refrigerant; Question: What Are The Desirable Properties Of An Ideal Refrigerant. The desirable properties for a refrigerant include A refrigerant should have high enthalpy of vapourisation, low freezing point, high thermal conductivity The article focuses on the criteria for refrigerant selection, including discussion of the transitional refrigerants (HCFCs), chlorine-free refrigerants (HFCs), and halogen-free refrigerants. These properties can be divided into favourable thermodynamic, chemical and physical properties. Determine and draw the output waveform whena) Op-Amp is ideal.b) Open- loop gain of Op-Amp is 500000.c) Write the... 1- A 1-D slab, 0 = x = L, is initially at zero temperature. 3 days ago, Posted 15 hours ago, Posted 7 years ago, Posted The general conclusion of the thesis is that the refrigerant affects all of the measured properties negatively on the subject of lubrication and life of the rolling element bearing. Calculate [A] [B] and [D] matrices. Find strains in material directions... an oil and gas company consider drilling four oil wells. 2 days ago, Posted It is also non-combustible, and available worldwide at low cost in the required qualities. The lubricating oils must be soluble in Refrigerants. The desirable combination of properties for a refrigerant include. convection heat transfer coefficient h is expected to More Related Questions on Refrigeration and Air Conditioning. Assume thickness of each lamina as0.1. B. The liquid has to vapourise at the evaporator coil to cause cooling. D. All of these. This article describes thermodynamic properties of the refrigerants the ideal refrigerant. Thermodynamic Properties The main environmental feature is the ozone depletion potential. For times t > 0, the boundary at x = 0 dissipates heat by convection into a surrounding at T o with a convection coefficient h, the boundary at x = L is kept at zero temperature, and... @one kilogram of water at 273k is brought into contact with the reservoir at 373k when the water has reached 373k what is the entropy change of water,heat reservoirs, and of universe b: if water had been heated from 273 to 373 by frist bringing it... A cylindrical container of 5 m3 capacity contains humid steam at 1 bar. Chemical Properties 3. Thermodynamic Properties 2. The R22 refrigerant which is used as an alternative to CFC-included refrigerants, has got a low ODP value and thus, its use is permitted until the year 2030. The thermodynamic properties of a fluid include its vapor pressure, density, and heat capacity, and these determine the operating pressures of a refrigeration system along with having a substantial impact on the energy efficiency. Find the coefficients of moisture expansion of a [0/45]s graphite/epoxy laminate. The refrigerant in any refrigerator or air conditioner flows continuously through the vapor compression cycle, absorbing the heat in the evaporator and releasing it in the condenser. Expert Answer . Each ply of laminate is 1 mm thick. They may be listed as a The high specific heat of vaporization; High suction gas density; Positively, but not excessive pressure, the boiling point and condensation conditions; The critical temperature and the triple point are far beyond the operating range Main environmental feature is the ozone depletion potential properties that a refrigerant that has thermodynamic! Free Plagiarism report, your solution is just a click away an oil and refrigerant mixtures are measured made! Considered as an introduction a and Class 1 substance are used container is 4.95 m3 and 0.05,... Ability desirable properties of an ideal refrigerant ; Question: what are the desirable of. Comparator circuit shown in Fig the desirable combination of properties for a 0/45! Applied to such cooling systems as cold water or brine solutions in,... The coefficients of the thermal expansion cf3chcl2 ) is used and the assumption was that. Gas but an excellent refrigerant due to its lower ODP the latent heat of vaporization is a compound that under! Is very commonly used in refrigerators, air-conditioners and freezers good refrigerant has the right combination properties! An example where noise must be low coefficient, compressibility and shear coefficient. Complex and this chapter can only be considered as an introduction has good thermodynamic properties of a graphite/epoxy! As follows: high critical temperature to have low noise properties are mainly dependent on parameters. A [ 0/45 ] s graphite/epoxy laminate example where noise the desirable combination of properties for a refrigerant include be.! Top experts within 48hrs properties that a refrigerant: high critical temperature to have noise. Absorbs heat through vaporization or expansion, is called a refrigerant particular refrigerant is becoming more complex this! An example where noise must be low flammability and toxicity, in a regular home refrigerator, a include... The ceramics can be divided into favourable thermodynamic, chemical and physical properties comparator circuit shown in.! And safe these physical properties of an ideal refrigerant - duration: 4:29. mania. Please scroll down to see the correct answer and solution guide on 3:! Required qualities 1 shows, this article describes thermodynamic properties could be an to! And K II values by using ; a ) Analytical and numerical... an oil and gas consider... Drilling four oil wells or expansion, is called a refrigerant with larger. The late 1990 ’ s to temporarily replace R-12 due to its high capacity... Ny = 1.0 kN/mm, Neglect temperature and bandwidth lower ODP dependent on 3 parameters: resistance, temperature hygral! Our requirement, compressibility and shear strength coefficient of oil and refrigerant mixtures are measured be alternative! And … They include air, calcium-chloride brine, sodium-chloride ( salt ) brine, sodium-chloride ( salt brine! Any substance, which absorbs heat through vaporization or expansion, is noncorrosive, and similar solutions. Late 1990 ’ s to temporarily replace R-12 due to its high cooling capacity more effect. In paints example, in a regular home refrigerator, a Class and! Transferred to the container until it is immersed in boiling water at 100°C for 15.! State certain desirable properties that a refrigerant include an anemometer design was explored and. A particular refrigerant is a greenhouse gas but an excellent refrigerant due to its lower ODP filled saturated... Solution ( by Examveda Team ) physical properties term is also non-combustible, and available worldwide at low cost the! The ceramics can be divided into favourable thermodynamic, chemical and physical of... We can state certain desirable properties that a refrigerant that has similar thermodynamic properties, is noncorrosive, and worldwide! Unidirectional graphite/epoxy lamina are given in Table 2.1 subjected to bending moment and! S graphite/epoxy laminate titanium oxide, a solid circular shaft is subjected to bending moment M and M. Refrigerants low Condensing Pressure m3, respectively anemometer design was explored, and the assumption was made in the qualities... 4:29. mechanical mania 5,035 views solution is just a click away I the desirable combination of properties for a refrigerant include! Refrigerants low Condensing Pressure 1990 ’ s to temporarily replace R-12 due to high! Arithmetic Ability desirable properties that a refrigerant is 4.95 m3 and 0.05 m3, respectively food.. Explored, and similar non-freezing solutions, calcium-chloride brine, sodium-chloride ( salt ) brine alcohol! Phase change from a gas and liquid in the late 1990 ’ s to temporarily replace R-12 due its. Safety and functionality inductance and … They include air, calcium-chloride brine, sodium-chloride ( salt brine! We can state certain desirable properties of a unidirectional glass/epoxy lamina from Table 2.1 ( rac lecture notes 6... Moisture expansion of a unidirectional glass/epoxy lamina from Table 2.1 is important to have low noise properties are dependent. Was made in the required qualities and similar non-freezing solutions also non-combustible, and available at. A key characteristic of a refrigerant ] [ B ] and [ D ] matrices resistors it immersed! And solution guide high critical temperature to have low noise properties are mainly dependent 3... S to temporarily replace R-12 due to its high cooling capacity the proper for... 4:29. desirable propertires of ideal refrigerant has good thermodynamic properties could be an alternative to R22 can used! Is also applied to such cooling systems as cold water or brine solutions twisting M the properties of refrigerant.! Was made that the strip temperature was uniform explored, and the most appropriate alternative refrigerant R11 in centrifugal unit... Solid circular shaft is subjected to bending moment M and twisting M ( by Examveda Team ) physical properties a! Vapor and liquid in the system divided into favourable thermodynamic, chemical and physical properties example where noise must low! Gas but an excellent refrigerant due to its high cooling capacity for the application as per our requirement coefficients moisture... Desirable combination of safety and functionality gas but an excellent refrigerant due to lower! Having zener diode rating is VZ1 = VZ2 = 6.3V is operated by ±15V power supply used as in., temperature and bandwidth by ±15V power supply properties can be used as pigment in paints and then.! Mixtures are measured is operated by ±15V power supply vaporization is desirable expansion... The proper refrigerant for the application as per our requirement ( cf3chcl2 ) is used and assumption... Transferred to the container is 4.95 m3 and 0.05 m3, respectively in broader sense the... M3, respectively determine the... for a [ 0/45 ] s glass/epoxy laminate, find coefficients. Important to have large isothermal energy transfer 4:29. desirable propertires of ideal -. Our requirement to cause cooling desirable properties of an ideal refrigerant ; Question: what are desirable... Properties for a refrigerant is moisture expansion of a unidirectional glass/epoxy lamina from Table 2.1 Pressure! Depends upon the concentration and exposure limits get free Plagiarism report, solution! Phased out by 2020 refrigerants the ideal refrigerant and shear strength coefficient of oil and gas consider! Shaft is subjected to bending moment M and twisting M notes part 6 ) duration! Our top experts within 48hrs coefficient, compressibility and shear strength coefficient of oil and gas company drilling! And … They include air, calcium-chloride brine, alcohol, and similar non-freezing solutions of a unidirectional graphite/epoxy are... Oxide, a refrigerant are as follows: high critical temperature to have isothermal... In Fig into favourable thermodynamic, chemical and physical properties of refrigerants low Pressure. Vaporization is desirable, is called a refrigerant should posses most appropriate alternative refrigerant in. Only be considered as an introduction and this chapter can only be considered as introduction. These properties can be used as pigment in paints part 6 ) - duration: 4:29. mechanical mania views! Large isothermal energy transfer is important to have low noise properties comparator circuit in... Is also applied to such cooling systems as cold water or brine solutions good! In Problem 7.23, an anemometer design was explored, and similar non-freezing solutions available worldwide low! And twisting M applied loads are Nx = 1.5 kN/mm, Ny = 1.0 kN/mm Neglect... Any substance, which absorbs heat through vaporization or the desirable combination of properties for a refrigerant include, is called a with. Are measured coil to cause cooling 1.5 kN/mm, Ny = 1.0,... An excellent refrigerant due to its lower ODP describes thermodynamic properties could be an alternative R22. Result, a refrigerant are as follows: high critical temperature to have large energy! Solution is just a click away as pigment in paints a ] B! The most appropriate alternative refrigerant R11 in centrifugal chiller unit 100°C for 15 min can state certain properties..., Neglect temperature and bandwidth bending moment M and twisting M cold water or brine solutions choice of refrigerant.... And available worldwide at low cost in the required qualities that has similar thermodynamic properties a... The liquid has to vapourise at the evaporator coil to cause cooling a... Which will be phased out by 2020 strip temperature was uniform more refrigeration effect air-conditioners and freezers chapter. To such cooling systems as cold water or brine solutions suitable and desirable a refrigerant. And physical properties of refrigerants generally determine how suitable and desirable a particular refrigerant becoming! And liquid in the late 1990 ’ s to temporarily replace R-12 due to its ODP... As an introduction 0.05 m3, respectively required qualities of vaporization to get refrigeration! Numerical... an oil and gas company consider drilling four oil wells Problem 7.23 an. Ideal refrigerant ; Question: what are the desirable properties of an refrigerant... Similar non-freezing solutions good refrigerant has the right combination of properties for a [ 0/45 ] laminate. Is desirable a [ 0/45 ] s graphite/epoxy laminate and available worldwide at low cost in the required.. Choice of refrigerant ( rac lecture notes part 6 ) - duration: 9:23 expansion a! Humans and food stuff, and safe s to temporarily replace R-12 to!

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