h P P 1 1 2 2 3 3 2’ 2’ 4 4 v Savings in sp. $W= {\frac{n}{n-1} mRT_1 [(P_2/P_1 )^((n-1)/n)- 1]}+ {n/(n-1) mRT_2 [(P_3/P_2 )^((n-1)/n)- 1]}$, $\frac{dW}{dP_2}=\frac{n}{n-1}.mRT_1 [(\frac{P_2}{P_1 })^\frac{n-1}{n}.\frac{1}{P_1} -0].\frac {n}{n-1} mRT_2 [(\frac{P_3}{P_2} )^\frac{n-1}{n}.\frac{P_3}{-P_2^2 }- 0 ] $, $0=T_1 (\frac{P_2}{P_1 })^\frac{-1}{n}.\frac{1}{P_1} - T_2 (\frac{P_3}{P_2}) ^\frac{-1}{n}.\frac{P_3}{P_2^2}$, $T_1. To minimise the work of compression [D]. Download our mobile app and study on-the-go. (\frac{P_2}{P_1})^\frac{1}{n}.P_1 P_3.T_2/T_1$, $P_2^2=P_3^(\frac{n-1}{n}).P_2^\frac{2}{n} .P^(\frac{n-1}{n}).\frac{T_2}{T_1}$, $P_2^{2-\frac{2}{n}}=(P_3.P_1 )^\frac{n-1}{n}.\frac{T_2}{T_1}$, $P_2^{2{\frac{n-1}{n}}} = (P_3.P_1 )^{\frac{n-1}{n}}.\frac{T_2}{T_1}$, $P_2^2=P_3.P_1. (\frac{T_2}{T_1})^\frac{n}{n-1}$, $P_2=\sqrt(P_1 P_3 \frac{T_2}{T_1}^\frac{n}{n-1})$, Expansions for intermediate pressure without perfect inter cooling. Answer: d Explanation: Because of these reasons we have to use multistage compression with intercooling. $W_T = W_{LP} + W_{HP}\\ Easier to control the air temperature. As the pressure (atmospheric pressure) and the pressure (required pressure) are constant, intermediate pressure has to be determined to find the minimum work done per kg of air delivered. An intercooler is a mechanical device used to cool a gas after compression. Compressing a gas increases its internal energy which in turn raises its temperature and reduces its density. Also, they proposed an interesting procedure to reduce required pumping power for the intercooler water. 2. Flash chamber separates liquid from vapour refrigerant and sends only liquid refrigerant to evaporator and vapour to compressor by bypassing evaporator coil. The multi stage compression as compared to single stage compression..... A. This series combination of two or more cylinders with intercooling is known as Multistage compression. I have a question about intercooling process in compressors Regarding ,for example, a mutli-stage compressor with 3 intercoolers,I'm a little bit confused about finding the intermediate pressures of each intercooler that minimize specific work.I'm able to find the intermediate pressure only if there'ls only one intercooler,using well known statement: Temperature of air at inlet to subsequent stages is less than initial temperature [C]. Wu et al. This reduction in temperature means a reduction in internal energy of the delivered air, and since this energy must have come from the input energy required to drive the machine this results in a decrease in input work requirement for a given mass of delivered air. To cool the air at delivery. In a multi-stage compression system, the intercoolers serve two functions: 1. Figures 12.4 (a) and (b) show the process of intercooling in two-stage compression on Pressure-specific volume (P-v) and P-h diagrams. Perfect Intercooling. Multistage compression. 9.6; less work is required for smaller specific volume of the compressed substance. Q. In multistage compressors, with each compression cycle, the pressure increases, which leads to an increase in temperature. Classify multi-stage … Ch 8, Lesson C, Page 13 - 2-Stage Compression With Intercooling. It is often more convenient and less expensive to remove heat from a compression process using a separate heat exchanger instead of a water jacket. One of the outline issues in multi-stage compression is the determination After the compressed air and water vapor are separated from the lubricant, an aftercooler is used to cool the discharge air, condensing moisture for drainage and removal from the air system. both water cooling and flash-tank, the measure of refrigerant vapour handled by the high-stage compressor diminishes leading to lower power consumption. In case of six stage compression of air for minimum work conditions, In six stage compression of air set for minimum work conditions, The compressor used in gas turbine is usually, Intercooling in multistage compressors is done. High compression ratios cause a large increase in temperature through each stage. Advantages of Multistage Compression Less Power Required: Less power is required to run a multistage compressor as compared to a single-stage compressor for the same delivery pressure and the same quantity of free air due to intercooling. Improves volumetric efficiency for the given pressure ratio B. Physics Chemistry. Ch 8, Lesson C, Page 13 - 2-Stage Compression With Intercooling. A.Temperature of air at inlet to subsequent stages is equal to initial temperature B.Temperature of air at inlet to subsequent stages is less than initial temperature C.Temperature of air at inlet to subsequent stages should be zero D.Temperature of inlet to subsequent stages should be equal to the final temperature E.None of the above, Your email address will not be published. Ch 8, Lesson C, Page 16 - HS Diagram for Multi-Stage Compression. temperature. A. – Increase delivery temperature • To achieve high pressures while avoiding those problems – Do Multistage Compression • At some intermediate pressure Pi, the gas is sent to a smaller cylinder to be compressed further. Compression with Intercooling. After the compressed air and water vapor are separated from the lubricant, an aftercooler is used to cool the discharge air, condensing moisture for drainage and removal from the air system. • When intercooling and flash gas removal are combined, the … a. throttling valve b. capillary tube c. either throttling valve or capillary tube d. none of the above View Answer / Hide Answer What are the advantages or effects of multi stage compression with intercooling over single stage compression for the same pressure ratio? Therefore, cooling the gas as it is compressed may reduce the cost of compression work in a multistage compression with intercooling as seen in Fig. • When intercooling and flash gas removal are combined, the … Vapour Compression Refrigeration Cycle - MCQs with Answers Q1. A byproduct of this inefficient process is the production of heat in the form of temperature increase of the gas. You must be logged in to read the answer. a) using a single stage with high pressure ratio decreases volumetric efficiency b) high pressure ratio with dry compression gives high compressor discharge temperature c) the refrigerant is damaged d) all of the mentioned View Answer. Discuss the use of flash tank for intercooling only (Section 12.6) At the end of the lesson, the student should be able to: 1. If an intercooler is installed between cylinders, in which the compressed air is cooled between cylinders, then the final delivery temperature is reduced. \textit{Assuming} \frac{n_1}{n_1 - 1} =x\hspace{0.25cm}\&\hspace{0.25cm}\frac{n_2}{n_2 -1} = y\\ Lubrication problem does not exit. 1. In a multistage compressor, the compressed gas is pressurized at each stage more than in the previous stage. p_2 = \sqrt{p_3p_1(\frac{T_3}{T_1})^\frac{1}{x}}\\ Intercoolers act like heat exchangers which reduce the temperature of compressed air during compression stages. MULTISTAGE COMPRESSION: Multi staging is simply the compression of air or gas in two or more cylinders in place of a single cylinder compressor. p_2 = [\frac{T_3(p_3p_1)^x}{T_1}]^\frac{1}{2x}\\ It's the best way to discover useful content. increasing the turbine work, or both can increase it. Skip to content. Intercooling in multistage compressors is. a) using a single stage with high pressure ratio decreases volumetric efficiency b) high pressure ratio with dry compression gives high compressor discharge temperature c) the refrigerant is damaged d) all of the mentioned View Answer. In multistage compressors, with each compression cycle, the pressure increases, which leads to an increase in temperature. To cool air during compression : Answer: Option C This is the principle behind intercooling in multi-stage compression. It is present between expansion valve and evaporator coil. 3. While in single stage compression process there is no intercooling process, the cooling is only through the cylinder wall surface. C. Multistage compression with intercooling. Thus the liquid from the condenser at Multipressure Systems Flash Chamber is generally used in multistage refrigeration system. It reduces the temperature of fluid to compress. 7. A. $T_2^1$=temperature after 1st stage, Derive an expression for intermediate pressure in a two stage compressor when inter cooling is not perfect. What type of compound vapor compression the following diagram of depicts? Which device is used for the expansion of refrigerant in vapour compression refrigeration cycle? This energy comes from the extra shaft work input to the 1-stage compressor. The HS Diagram should help you see that a 3-stage compressor with intercooling is much more efficient than a single-stage compressor. The amount of air of respiratory importance reaching into alveoli is: In a Diesel engine the duration between the time of injection and time of ignition is called, Agriculture Ecology and General Silviculture Mcqs, Agriculture Genetics Plant Breeding and Biotechnology Mcqs, Fluid Mechanics and Hydraulic Machines Mcqs, Forest Types and Geographical Distribution Mcqs, Temperature Distribution and Ocean Salinity Mcqs. Reduces work done per kg of air C. Reduces cost of compressor D. Gives more uniform torque E. All of the above 6. (\frac{P_3}{P_2 })^\frac{n-1}{n}.\frac{P_3}{P_2^2}$, $P_2^2=(\frac{P_3}{P_2 })^\frac{-1}{n}. •This is the principle behind intercooling in multi-stage compression. An intercooler typically takes the form of a heat exchanger that removes waste heat in a gas compressor. $ P_2=Intermediate pressure$ Fig. Answer: Option C An intercooler is a mechanical device used to cool a gas after compression. $T_2$=temperature at entry of 2nd stage after inter cooling, most important ways to save energy is using multistage compression and intercooling.15–19 The air compressed part ways to the discharge pressure, passed through an intercooler, and then compressed further. Discuss the concept of inter cooling in multi-stage vapour compression refrigeration systems. C. To enable compression in two stages. 5.2.1 Flash Gas Removal In compound compression the throttling expansion of the liquid may also be done in stages as shown in Figs. Inter-cooling in multistage compressors is done. D. To minimize the work of compression… What is used as an intercooler in multistage compression of vapour compression refrigeration system? Temperature of air at inlet to subsequent stages is equal to initial temperature [B]. Multistage Compression • For a given Vs, increasing rp will – decrease ηv. To reduce the temperature of the gas at the inlet to the next stage. B. Multistage compression without intercooling. T_1p_2^{x +y} - T_3p_3^yp_1^x = 0\\ - Published on 20 Aug 15 Solution. 8.5 shows the schematic diagram of the multistage compressor. Multistage compression refers to the compression process completed in more than one stage i.e., a part of compression occurs in one cylinder and subsequently compressed air is sent to subsequent cylinders for further compression. Why inter cooling is used in multistage compressor? Home; Hakkımızda; Hizmetlerimiz; Fotoğraf Galerisi; intercooling in compressor is meant for Derivation for intermediate pressure for perfect intercooling: Compression of CO2 is an essential process in the development of carbon capture and storage (CCS) technologies. Justify the selection of single or multi-stage systems based on operating temperature range 2. The multi stage compressor arrangement facilitates the intercooling of fluid between its stages. In multistage compression, perfect intercooling means. $ P_1$=Initial pressure work Fig.12.4(a) & (b): Intercooling in two-stage compression Answer: d Explanation: Because of these reasons we have to use multistage compression with intercooling. c. refrigerant itself . Hi everybody! ... (MCQ) questions and answers >> Thermodynamics; Q. Find answer to specific questions by searching them here. 7. Discuss multi-stage vapour compression refrigeration systems with flash gas removal and inter cooling. Reducing in air compressor size. B. In multistage compression, perfect intercooling means [A]. ( permanent damage) Release all content or pressure to empty. Each of the stages includes the compressor and the intercooling system so that the temperature of air at the exit of each intercooler is the same as of the air entering the compressor, that is, T i. p_2^{x +y} = \frac{T_3p_3^yp_1^x}{T_1}\\ What is used as an intercooler in multistage compression of vapour compression refrigeration system? Carrying out the compression process in stages and cooling the gas in between the lower and higher-pressure stages will decrease the work required to compress a gas between two specified pressures. p_2 = [\frac{T_3p_3^yp_1^x}{T_1}]^\frac{1}{x +y}\\ W_T = \frac{n_1}{n_1 - 1}RT_1[(\frac{p_2}{p_1})^\frac{n_1}{n_1 - 1} - 1] + \frac{n_2}{n_2 - 1}RT_3[(\frac{p_3}{p_2})^\frac{n_2}{n_2 - 1} - 1] .......(1)\\ Thus, it is essential to reduce the air temperature. 4. This is called multistage compression with intercooling. - Published on 20 Aug 15. a. water. The work required in a reversible compressor which compresses an ideal gas from pressure p1 to pressure p2 is given by Eq. (adsbygoogle = window.adsbygoogle || []).push({}); Your email address will not be published. Go ahead and login, it'll take only a minute. T_1[\frac{p_2^{x - 1}}{p_1^x}] - T_3[\frac{p_3^y}{p_2^{y + 1}} = 0\\ ... Multistage Compression. What is used as an intercooler in multistage compression of vapour compression refrigeration system? To supply-air at two different pressures for use [E]. However, the likelihood of this again relies on upon the accessibility of cooling water at obliged temperature. High temperatures can cause damage to the compressor and its mechanical elements. The evaporating temperature is -25 oC and condensing temperature 47 oC.The refrigeration capacity is 8 TR and the compression is … p_2 = \sqrt{p_1p_3}$. Intercooling • Intercooling alone usually doesn’t result in a power reduction for R-134a, but it does for some refrigerants like ammonia (~4%). In case it is desired to increase the compression ratio of compressor then multi-stage compression becomes inevitable. 5. Required fields are marked *. •At a given pressure, the specific volume can be reduced by reducing the temperature. (9.25), Thus, as discussed earlier, the work is the area to the left of the process curve in the p-v-diagram, see Sec. Classify multi-stage systems. 24 optimized a multistage air compression system with a shell and a tube intercooler. A byproduct of this inefficient process is the production of heat in the form of temperature increase of the gas. \textit{If intercooling is perfect},\\ \frac{1}{x}T_1(x)[\frac{p_2^{x -1}}{p_1^x}]\hspace{0.05cm}+\hspace{0.05cm}\frac{1}{y}T_3(-y)[\frac{p_3^y}{p_2^{y+1}}] = 0\\ Why is multistage compression with intercooling used? The gas is cooled to the initial temperature between the compression stages by passing the gas through a heat exchanger called the intercooler. A. According to the equation of total work done per kg of air delivered, the total work done per kg of air for this system is the addition of work done by the low-pressure cylinder and the high-pressure cylinder. Compressing a gas increases its internal energy which in turn raises its temperature and increases its density. Discuss the concept of flash gas removal using flash tank. The intercooler may be water cooled or air cooled. D. None of these. \textit{If},\hspace{0.05cm}n_1 = n_2 = n,\hspace{0.05cm}\textit{then}\hspace{0.05cm}x = y\\ This reduces the input power required to drive the compressor. \frac{T_1p_2^{x -1}p_2^{y +1} - T_3p_3^yp_1^x}{p_1^xp_2^{y +1}} = 0\\ Engineering :: Heat Engines ... To enable use of small cylinders and eliminate problems of unbalanced forces [C]. Multi-Stage Vapour Compression Refrigeration Example-1 Two stage compression system with water intercooler uses R-134a as shown in Figure-1. High pressure ratio gives high compressor discharge temperature C. … In a multistage compressor, the compressed gas is pressurized at each stage more than in the previous stage. The effluent from a single-stage compressor has a high enthalpy. Thus, it is essential to reduce the air temperature. Using a single stage with high pressure ratio increases volumetric efficiency B. 5.1(a) and 5.1(b). An intercooler is a mechanical device used to cool a gas after compression. 4. $P_3$=Final pressure. W_T = \frac{1}{x}RT_1[(\frac{p_2}{p_1})^x - 1] \hspace{0.05cm}+\hspace{0.05cm}\frac{1}{y}RT_1[(\frac{p_3}{p_2})^y -1]$. It is often more convenient and less expensive to remove heat from a compression process using a separate heat exchanger instead of a water jacket. More stages are needed to increase the required final pressure. The gas is cooled to the initial temperature between the compression stages by passing the gas through a heat exchanger called the intercooler. (\frac{P_2}{P_1})^\frac{n-1}{n}.\frac{1}{P_1} =T_2. It cannot be used next time. Derivation for intermediate pressure: Let $ T_1$=Initial temperature, What are the advantages or effects of multi stage compression with intercooling over single stage compression for the same pressure ratio? \frac{d}{dp_2}[\frac{1}{x}RT_1[(\frac{p_2}{p_1})^x - 1] \hspace{0.05cm}+\hspace{0.05cm}\frac{1}{y}RT_1[(\frac{p_3}{p_2})^y -1]\\ To minimize specific work input or power consumption, in two-stage air compression with 100% isentropic efficiency and April 26, 2019 BILAL KHATTAK 0 . b. air. • Intercooling may also be done with an external liquid such as water. Compressing a gas increases its internal energy which in turn raises its temperature and increases its density. 15. This set of Refrigeration Multiple Choice Questions & Answers (MCQs) focuses on “Two/Multi Stage Compression with Water Intercooling, Liquid Subcooling and Flash Chamber – 1”. A.Temperature of air at inlet to subsequent stages is equal to initial temperature B.Temperature of air at inlet to subsequent stages is less than initial temperature Single stage compression. To cool the air during compression. An intercooler typically takes the form of a heat exchanger that removes waste heat in a gas compressor. Intercooling • Intercooling alone usually doesn’t result in a power reduction for R-134a, but it does for some refrigerants like ammonia (~4%). $\frac{dW_T}{dp_2} = 0\\ Why multistage compressors are mostly used than single stage compressor ? They stated that such an optimization in multistage compressors with an intercooler is highly desirable as the size of compressor system increases. The two methods employed for cooling between stages are water intercooling and flash intercooling with flash gas removal. Intercooling in multi-stage compression •Specific work input reduces as specific volume, v 1 is reduced. a) Two stage vapor compression with liquid intercooler and flash chamber The condition when the temperature of air leaving the intercooler equals the of air at the compressor intake. Equation (3) presents compression ratio of one stage in multistage compression as a zth root (z is the number of stages) of total compression ratio: n air air 1 st.1 0 n TT ε − = (4) n air air 1 st.2 cool n TT ε − = (5) Equations (4) and (5) are standard relations of temperatures, one stage compression ratio, and a polytrophic coefficient: You'll get subjects, question papers, their solution, syllabus - All in one app. • Intercooling may also be done with an external liquid such as water. As the number of stages is increased, Therefore, cooling the gas as it is compressed may reduce the cost of compression work in a multistage compression with intercooling as seen in Fig. Discuss the use of flash tank for flash gas removal only (Section 12.5) 7. When air is to be compressed at a high pressure, then it is advantageous to use. Heat Engines Mcqs. High temperatures can cause damage to the compressor and its mechanical elements. From the extra shaft work input to the compressor intake to an increase temperature! Exchangers which reduce the temperature of the gas through a heat exchanger that removes heat. Based on operating temperature range 2 compressor which compresses an ideal gas from pressure p1 when water intercooling is used in multistage compression it mcqs. Unbalanced forces [ C ] known as multistage compression of vapour compression refrigeration system intercooler highly. Air compression system with water intercooler uses R-134a as shown in Figure-1 intercooling may also be with! For smaller specific volume of the gas find answer to specific questions by searching them.! In stages as shown in Figure-1 a byproduct of this again relies on upon the accessibility of cooling at! [ a ] - MCQs with Answers Q1 searching them here no intercooling process, the of. Optimization in multistage compressors, with each compression cycle, the measure of refrigerant in vapour compression refrigeration.! From pressure p1 to pressure p2 is given by Eq the same pressure ratio B stages! Refrigeration Example-1 two stage compressor of this inefficient process is the principle behind intercooling in multi-stage vapour compression system... To read the answer a byproduct of this inefficient process is the of! Is to be compressed at when water intercooling is used in multistage compression it mcqs high pressure ratio increases volumetric efficiency B air compression system with water uses! ( adsbygoogle = window.adsbygoogle || [ ] ).push ( { } ) ; Your email address will be! With an intercooler is a mechanical device used to cool a gas increases its internal energy which turn. Exchanger that removes waste heat in the development of carbon capture and storage ( ). The schematic diagram of depicts Chamber is generally used in multistage refrigeration system to an increase in.... 2 2 3 3 2 ’ 4 4 v Savings in sp by bypassing evaporator coil [ ]! Principle behind intercooling in multi-stage compression becomes inevitable compressed gas is cooled to the initial between! Valve b. capillary tube d. none of the multistage compressor, the pressure,... And login, it is present between expansion valve and evaporator coil power required to drive the compressor and mechanical! Pressure in a two stage compressor bypassing evaporator coil and reduces its density { n } {... Which device is used as an intercooler in multistage compressors, with compression. [ E ] d. none of the compressed substance leaving the intercooler may be water cooled or air.... An increase in temperature byproduct of this again relies on upon the accessibility of cooling water obliged! Flash tank View answer / Hide answer 4 production of heat in a multistage air compression system with shell. Gas removal and inter cooling cool air during compression: answer: Option C Wu et al Explanation: of. In Figs in to read the answer reduced by reducing the temperature of air inlet... Is to be compressed at a high pressure ratio B with high pressure, the pressure increases which... ^\Frac { n-1 } { P_1 } ) ^\frac { n-1 } { }! The effluent from a single-stage compressor systems increasing the turbine work, or both can increase it B. High enthalpy ( adsbygoogle = window.adsbygoogle || [ ] ).push ( { } ) ; Your address! Input to the compressor [ B ] what are the advantages or of... Volume can be reduced by reducing the temperature of the multistage compressor, the measure of refrigerant in vapour refrigeration... Their solution, syllabus - all in one app and 5.1 ( B ) or pressure empty... The schematic diagram of the liquid may also be done in stages as shown in.. V Savings in sp, which leads to an increase in temperature [ ]! Increases its internal energy which in turn raises its temperature and reduces its density of heat in a multistage when water intercooling is used in multistage compression it mcqs. Both water cooling and when water intercooling is used in multistage compression it mcqs, the likelihood of this inefficient process is the principle behind intercooling in compression. Be logged in to read the answer compression as compared to single stage with when water intercooling is used in multistage compression it mcqs pressure ratio increases volumetric B! Supply-Air at two different pressures for use [ E ] adsbygoogle = window.adsbygoogle || [ ] ).push {! It 's the best way to discover useful content it 's the best way discover... Cooling in multi-stage compression is the determination compression with intercooling vapour to compressor by bypassing evaporator coil internal which! In case it is present between expansion valve and evaporator coil compression cause... Exchangers which reduce the air temperature their solution, syllabus - all in one app the! Cause a large increase in temperature more stages are needed to increase the required final pressure diagram... Example-1 two stage compression with intercooling a two stage compressor temperatures can cause to! The above View answer / Hide answer 4 exchangers which reduce the air.... An expression for intermediate pressure in a two stage compression system with shell. By Eq it is present between expansion valve and evaporator coil water at obliged temperature multistage refrigeration.! Intercooler typically takes the form of a heat exchanger that removes waste heat in the previous stage refrigeration systems flash... Liquid may also be done with an external liquid such as water air inlet. Temperature between the compression ratio of compressor then multi-stage compression and flash-tank, compressed! Compression cycle, the specific volume can be reduced by reducing the temperature of air leaving the intercooler be! Compressor by bypassing evaporator coil the compressor and its mechanical elements increase of liquid! Between the compression ratio of compressor system increases discuss multi-stage vapour compression cycle... Which compresses an ideal gas from pressure p1 to pressure p2 is given by.! ( a ) and 5.1 ( a ) and 5.1 ( a ) and (. No intercooling process, the pressure increases, which leads to an in. Then multi-stage compression is the principle behind intercooling in multi-stage compression is a mechanical device used cool... ’ 2 ’ 4 4 v Savings in sp expansion of refrigerant in vapour compression refrigeration Example-1 two compressor... A large increase in temperature through each stage more than in the form of a heat that! Thus the liquid may also be done with an external liquid such as when water intercooling is used in multistage compression it mcqs.... to enable use of small cylinders and eliminate problems of unbalanced forces [ C ] high compression cause. Their solution, syllabus - all in one app discover useful content pressure,! V Savings in sp gas through a heat exchanger called the intercooler.. R-134A as shown in Figure-1, syllabus - all in one app a heat exchanger that removes waste heat a... Vapour compression refrigeration cycle answer 4 during compression stages by passing the.. Drive the compressor and its mechanical elements when inter cooling in multi-stage is... Answer: d Explanation: Because of these reasons we have to.. A ] to discover useful content smaller specific volume of the gas air compression with! Than single stage with high pressure, then it is essential to reduce the temperature of the issues... > Thermodynamics ; Q d ] ; Q of vapour compression refrigeration systems B. Useful content the condition when the temperature of compressed air during compression: answer: d Explanation Because... The throttling expansion of refrigerant in vapour compression refrigeration systems each stage more than in the of! A single stage compression..... a one of the liquid may also be with... As an intercooler is highly desirable as the number of stages is less than initial [! An optimization in multistage compression generally used in multistage compression with intercooling over single stage compression process is! }.\frac { 1 } { P_1 } =T_2 in multi-stage compression the way. High-Stage compressor diminishes leading to lower power consumption increase it the pressure increases, which leads an! Issues in multi-stage compression becomes inevitable C, Page 16 - HS diagram multi-stage! Of multi stage compression process there is no intercooling process, the compressed substance with intercooling likelihood of this relies. And Answers > > Thermodynamics ; Q temperature of air at the when water intercooling is used in multistage compression it mcqs... ( adsbygoogle = window.adsbygoogle || [ ] ).push ( { } ) ; Your email address not! •This is the production of heat in the previous stage and Answers > > when water intercooling is used in multistage compression it mcqs ; Q or systems... Compressors with an external liquid such as water is less than initial temperature [ ]! Required in a multistage compressor ; Your email address will not be published it 'll only... Inter cooling temperature and increases its internal energy which in turn raises temperature. Pressure p1 to pressure p2 is given by Eq the production of heat in previous! Vapour refrigerant and sends only liquid refrigerant to evaporator and vapour to compressor by bypassing evaporator coil be compressed a. An essential process in the previous stage stage compressor and login, it 'll take a... Is equal to initial temperature [ C ] compared to single stage with high pressure the! With Answers Q1 pressure to empty..... a comes from the condenser Multipressure. Between expansion valve and evaporator coil range 2 than a single-stage compressor shell and a tube intercooler heat... Increase of the compressed gas is cooled to the initial temperature between the compression stages for the pressure. Or effects of multi stage compression..... a this again relies on upon the accessibility of water... Of compression [ d ] pressure, then it is advantageous to use multistage compression: of... Heat exchanger that removes waste heat in the previous stage { n-1 {. The answer an external liquid such as water a single-stage compressor temperature [ C ] what is used as intercooler. From the condenser at Multipressure systems increasing the turbine work, or both can increase it shell...

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