This document describes a study that uses a single effect lithium bromide-water vapor absorption cycle to cool the inlet air of a gas turbine power plant. The goal is to improve the performance of the plant. Thermodynamic analyses are carried out for various exhaust gas temperatures from 150-220°C. Results show the cooling capacity can reduce the inlet air temperature up to 5°C when the ambient temperature is 35°C, leading to noticeable efficiency improvements in the gas turbine.
Experimental Investigation of a Household Refrigerator Using Evaporative-Cool...inventy
The objective of this paper was to investigate experimentally the effect of Evaporative-cooled condenser in a household refrigerator. The experiment was done using HCF134a as the refrigerant. The performance of the household refrigerator with air-cooled and Evaporative-cooled condenser was compared for different load conditions. The results indicate that the refrigerator performance had improved when evaporative-cooled condenser was used instead of air-cooled condenser on all load conditions. Evaporativecooled condenser reduced the energy consumption when compared with the air-cooled condenser. There was also an enhancement in coefficient of performance (COP) when evaporative-cooled condenser was used instead of air-cooled condenser. The Evaporative cooled heat exchanger was designed and the system was modified by retrofitting it, instead of the conventional air-cooled condenser by making drop wise condensation using water and forced circulation over the condenser. From the experimental analysis it is observed that the COP of evaporative cooled system increased by 13.44% compared to that of air cooled system. So the overall efficiency and refrigerating effect is increased. In minimum constructional, maintenance and running cost, the system is much useful for domestic purpose. This study also revealed that combining a evaporative cooled system along with conventional water cooled system under the condition that the defrost water obtained from the freezer is used for drop wise condensation over condenser and water cooled condensation of the condenser at the bottom using remaining defrost water would reduce the power consumption, work done and hence further increase in refrigerating effect of the system. The study has shown that such a system is technically feasible and economically viable
Review on Comparative Study between Helical Coil and Straight Tube Heat Excha...IOSR Journals
The purpose of this study is to determine the relative advantage of using a helically coiled heat
exchanger against a straight tube heat exchanger. It is found that the heat transfer in helical circular tubes is
higher as compared to Straight tube due to their shape. Helical coils offer advantageous over straight tubes due
to their compactness and increased heat transfer coefficient. The increased heat transfer coefficients are a
consequence of the curvature of the coil, which induces centrifugal forces to act on the moving fluid, resulting in
the development of secondary flow. The curvature of the coil governs the centrifugal force while the pitch (or
helix angle) influences the torsion to which the fluid is subjected to. The centrifugal force results in the
development of secondary flow. Due to the curvature effect, the fluid streams in the outer side of the pipe moves
faster than the fluid streams in the inner side of the pipe. The difference in velocity sets-in secondary flows,
whose pattern changes with the Dean number of the flow.
In current work the fluid to fluid heat exchange is taken into consideration, Most of the investigations on heat transfer coefficients are for constant wall temperature or constant heat flux. The effectiveness, overall
heat transfer coefficient, effect of coldwater flow rate on effectiveness of heat exchanger when hot water mass
flow rate is kept constant and effect of hot water flow rate on effectiveness when cold water flow rate kept
constant studied and compared for parallel flow, counter flow arrangement of Helical coil and Straight tube
heat exchangers. The inner heat transfer coefficient calculated from Wilson plot method. Then Nusselt no and
correlation obtained on the basis of inner heat transfer coefficient. All readings were taken at steady state
condition of heat exchanger.
The result shows that the heat transfer coefficient is affected by the geometry of the heat exchanger.
Helical coil heat exchanger are superior in all aspect studied here.
Low charge ammonia vapour compression refrigeration system for residential ai...RAJESHKUMAR4616
Low-charge ammonia chillers provide a natural refrigerant option for the chiller market facing pressure to reduce the global warming impact of their systems. However, to make the most significant impact initially and for the life of the system, ammonia chillers must be able to deliver premium efficiency to assure the lowest indirect impact to the environment. Ammonia’s availability is not at risk of becoming scarce like hydrofluorocarbon (HFC) synthetic refrigerants; however, energy codes are always becoming more stringent and the most advantageous systems will stand the test of time from a chemical perspective and from a performance perspective.
Ammonia chillers with small amount of refrigerant have afforded the benefits of industrial quality and efficiency with the ability for deployment just like commercial packaged systems. However, packaged ammonia systems maintain some key differences relative to commercial HFC packages that are important to understand because they bring added value, but also additional capital cost. It is therefore important to consider the total cost of ownership to understand the business impact fully.
Experimental Investigation of a Household Refrigerator Using Evaporative-Cool...inventy
The objective of this paper was to investigate experimentally the effect of Evaporative-cooled condenser in a household refrigerator. The experiment was done using HCF134a as the refrigerant. The performance of the household refrigerator with air-cooled and Evaporative-cooled condenser was compared for different load conditions. The results indicate that the refrigerator performance had improved when evaporative-cooled condenser was used instead of air-cooled condenser on all load conditions. Evaporativecooled condenser reduced the energy consumption when compared with the air-cooled condenser. There was also an enhancement in coefficient of performance (COP) when evaporative-cooled condenser was used instead of air-cooled condenser. The Evaporative cooled heat exchanger was designed and the system was modified by retrofitting it, instead of the conventional air-cooled condenser by making drop wise condensation using water and forced circulation over the condenser. From the experimental analysis it is observed that the COP of evaporative cooled system increased by 13.44% compared to that of air cooled system. So the overall efficiency and refrigerating effect is increased. In minimum constructional, maintenance and running cost, the system is much useful for domestic purpose. This study also revealed that combining a evaporative cooled system along with conventional water cooled system under the condition that the defrost water obtained from the freezer is used for drop wise condensation over condenser and water cooled condensation of the condenser at the bottom using remaining defrost water would reduce the power consumption, work done and hence further increase in refrigerating effect of the system. The study has shown that such a system is technically feasible and economically viable
Review on Comparative Study between Helical Coil and Straight Tube Heat Excha...IOSR Journals
The purpose of this study is to determine the relative advantage of using a helically coiled heat
exchanger against a straight tube heat exchanger. It is found that the heat transfer in helical circular tubes is
higher as compared to Straight tube due to their shape. Helical coils offer advantageous over straight tubes due
to their compactness and increased heat transfer coefficient. The increased heat transfer coefficients are a
consequence of the curvature of the coil, which induces centrifugal forces to act on the moving fluid, resulting in
the development of secondary flow. The curvature of the coil governs the centrifugal force while the pitch (or
helix angle) influences the torsion to which the fluid is subjected to. The centrifugal force results in the
development of secondary flow. Due to the curvature effect, the fluid streams in the outer side of the pipe moves
faster than the fluid streams in the inner side of the pipe. The difference in velocity sets-in secondary flows,
whose pattern changes with the Dean number of the flow.
In current work the fluid to fluid heat exchange is taken into consideration, Most of the investigations on heat transfer coefficients are for constant wall temperature or constant heat flux. The effectiveness, overall
heat transfer coefficient, effect of coldwater flow rate on effectiveness of heat exchanger when hot water mass
flow rate is kept constant and effect of hot water flow rate on effectiveness when cold water flow rate kept
constant studied and compared for parallel flow, counter flow arrangement of Helical coil and Straight tube
heat exchangers. The inner heat transfer coefficient calculated from Wilson plot method. Then Nusselt no and
correlation obtained on the basis of inner heat transfer coefficient. All readings were taken at steady state
condition of heat exchanger.
The result shows that the heat transfer coefficient is affected by the geometry of the heat exchanger.
Helical coil heat exchanger are superior in all aspect studied here.
Low charge ammonia vapour compression refrigeration system for residential ai...RAJESHKUMAR4616
Low-charge ammonia chillers provide a natural refrigerant option for the chiller market facing pressure to reduce the global warming impact of their systems. However, to make the most significant impact initially and for the life of the system, ammonia chillers must be able to deliver premium efficiency to assure the lowest indirect impact to the environment. Ammonia’s availability is not at risk of becoming scarce like hydrofluorocarbon (HFC) synthetic refrigerants; however, energy codes are always becoming more stringent and the most advantageous systems will stand the test of time from a chemical perspective and from a performance perspective.
Ammonia chillers with small amount of refrigerant have afforded the benefits of industrial quality and efficiency with the ability for deployment just like commercial packaged systems. However, packaged ammonia systems maintain some key differences relative to commercial HFC packages that are important to understand because they bring added value, but also additional capital cost. It is therefore important to consider the total cost of ownership to understand the business impact fully.
Flue gas low temperature heat recovery system for air conditioningeSAT Journals
Abstract Huge amount of energy wasted through the flue gas in thermal power station causes great concern in recent years. Discharging hot flue gas in the environment is not only a wastage of energy but also increases the rate of global warming. Efforts are given world -wide to harness the energy for useful purposes. In this work, the waste heat of flue gas in a 350 MW thermal power plant is utilized in vapor absorption air conditioning plant. Gas to liquid multi-pass cross flow heat exchanger that have been placed in the existing space between boiler and chimney. The dimensions of the finally selected heat exchanger are 0.106m × 2.4m × 3.4m. The number of pipes required for the heat exchanger is found to be 12 using iteration method and temperature of water at the outlet of last pipe is 101.1℃. The extracted energy from the flue gas is used to heat water to be utilized in the generator of a vapor absorption refrigeration system that has produced a refrigerating capacity of 70 TR. approximately. Due to the corrosive nature of flue gas, heat recovery is confined up to the acid dew point temperature of the flue gas. Suitable software is used to find out the detailed design parameters of Gas to liquid multi-pass cross flow heat exchangers. Out of many feasible designs of heat exchangers, the most economic design is selected as the final design. Keywords—Air Conditioning; Flue Gas; Heat Exchanger; Heat Recovery; Vapour Absorption Machine
Research Inventy : International Journal of Engineering and Scienceinventy
esearch Inventy : International Journal of Engineering and Science is published by the group of young academic and industrial researchers with 12 Issues per year. It is an online as well as print version open access journal that provides rapid publication (monthly) of articles in all areas of the subject such as: civil, mechanical, chemical, electronic and computer engineering as well as production and information technology. The Journal welcomes the submission of manuscripts that meet the general criteria of significance and scientific excellence. Papers will be published by rapid process within 20 days after acceptance and peer review process takes only 7 days. All articles published in Research Inventy will be peer-reviewed.
This paper describes an experimental study of using the waste heat from a Panasonic Under-
Ceiling split room air - conditioner had a rated capacity of 3.51 kW (12,000 Btu/h). An under – ceiling
split type air conditioning for heating domestic water in private homes. Energy recovery improved the
performance, and the recovered energy could replace electricity completely for heating domestic water
use. An extra charge of refrigerant in the air-conditioner could prevent its compressor from over heating
during energy recovery. The experimental conducted on varies capacity of the range from 22.5 litres to
120 litres storage tank. Results show the water temperature increased lies in the range of 50 OC to 65
OC. It was found that, when the initial water temperature in the 22.5 litres storage tank 27 OC, the water
temperature reached 65 OC in 105 minutes. For 120 litres water, temperature increased from 27 OC to 62
OC,5 in 240 minutes.
MERKELS METHOD FOR DESIGNING INDUCED DRAFT COOLING TOWERIAEME Publication
In general, cooling towers are used to dissipate process waste heat into the atmosphere. In this paper, induced draft cooling tower has been designed by simplified merkel’s method. The design of cooling tower is based on Merkel’s method. The t ower characteristic is determined by the ratio of range and log-mean-enthalpy difference. Optimization of the operating conditions for cooling tower applications in cooling water is extremely significant in order to get the most energy efficient operating point for these systems. A simple algebraic formula is used to calculate the optimum water-to-air flow rate. Merkel’s method is the most widely accepted theory for cooling tower calculations. It combines equations for heat and water vapor transfer. The objective of this paper is to present the design procedure of counter – flow cooling towers in a simplified manner
A REVIEW PAPER ON ANALYSIS OF AUTOMOBILE RADIATORijsrd.com
An Automotive engine cooling system takes out of excess heat produced during engine operation. An automobile cooling system regulates engine surface temperature for engine optimum efficiency. Recent advancement and development in engine for power forced engine cooling system to develop new strategies to improve its performance efficiency. Also to reduce fuel consumption along with controlling engine emission to mitigate environmental pollution norms. This paper throws light on parameters which influence radiator performance along with reviews some of the conventional and modern approaches to enhance radiator performance. This review paper Focus on the various research papers regarding experimental, CFD and Numerical analysis to improving automobile radiator efficiency.
Distribution, Habitat Utilization and Threats to Chinese Pangolin (Manis Pent...NAAR Journal
The Chinese Pangolin (Manis pentadactyla) is a unique mammal
having stiff scales, body shape slender like a reptile, burrow living and
highly nocturnal. It is receiving less scientific attention therefore
information on its ecology, behavior, status and distribution is still
scarce in Nepal. Pangolins are distributed in many districts and
protected areas of Nepal but are threatened due to habitat destruction,
illegal trade and lack of awareness. Thus, this research was conducted
to assess the distribution, habitat utilization and threats to Chinese
Pangolin in Mahabharat and Chure community forests of Sindhuli
district. The primary data were collected by using the methods adopted
in National Pangolin Survey, Nepal (2016). The sample size for
scheduled questionnaire survey was calculated by using the formula
given by Krejice and Morgan in 1970. The secondary data were
collected from the DFO, Sector forest office and community forest
office. Through field survey within the transect of 500 meters;
distribution of burrows, their geographical coordinates, slope,
elevation, canopy cover, soil moisture, soil colour and texture,
distance to settlement, water and road and number of ants/termites
mound were recorded. A total of 348 burrows were recorded including
206 (91 active, 115 inactive) in Mahabharat Community Forest and
142 (57 active, 85 inactive) in Chure Community Forest. The
elevation range of species was from 1400 m to 1700 m with maximum
number of burrows at slope range of 30⁰-40⁰ in Mahabharat
community forest. However, in Chure community forest, the elevation
range of species was from 900 m to 1300 m with maximum number of
burrows at slope range of 20⁰-30⁰. The highest frequency of burrows
was recorded in brown and light yellow colour soil in Mahabharat and
Chure community forest respectively. Mostly the burrows were
recorded in Schima wallichii and Shorea robusta dominant forests in Mahabharat and Chure community forest respectively. Poaching for
meat and traditional medicine and habitat destruction were major
threats to pangolin at the sites and their conservation status was found
to be worse.
Feedwater Heater Control: Bring Your Efficiency to a New Level -- Kevin Hambrice, Global Factory Sales and Marketing Manager-Level, K-TEK, A Member of the ABB Group
In this Thesis I will try to understand the concept associated with cooling towers and model a laboratory sized cooling tower in a software package called Engineering Equation Solver (EES). An example of system modelling is presented in this progress report, along with the comparison of a set of results with an experimental data from P.A Hilton Model H892 Bench top cooling tower with a maximum of 9% error. A user interface is also modelled to simulate off-design performance rather than conducting experiments. It also allows you to do additional scenarios that cannot be practically being done in lab,
like Relative humidity, etc.
Thermodynamic Analysis of a Cascade Refrigeration System Based On Carbon Diox...IJERA Editor
Thermodynamic analysis of a cascade refrigeration system that uses carbon dioxide-ammonia (R744-R717) as refrigerant is presented in this paper to determine the optimum condensing temperature of the cascade condenser at given design parameters, to maximize the COP of the system. The design and operating parameters considered in this study include (1) condensing, sub cooling, evaporating and super heating temperatures in the ammonia (R717) high-temperature circuit, (2) temperature difference in the cascade heat exchanger, and (3) evaporating, superheating, condensing and sub cooling in the carbon dioxide (R744) low-temperature circuit. A multilinear regression analysis was employed in order to develop two useful correlations for maximum COP, and optimum condensing temperature.
Flue gas low temperature heat recovery system for air conditioningeSAT Journals
Abstract Huge amount of energy wasted through the flue gas in thermal power station causes great concern in recent years. Discharging hot flue gas in the environment is not only a wastage of energy but also increases the rate of global warming. Efforts are given world -wide to harness the energy for useful purposes. In this work, the waste heat of flue gas in a 350 MW thermal power plant is utilized in vapor absorption air conditioning plant. Gas to liquid multi-pass cross flow heat exchanger that have been placed in the existing space between boiler and chimney. The dimensions of the finally selected heat exchanger are 0.106m × 2.4m × 3.4m. The number of pipes required for the heat exchanger is found to be 12 using iteration method and temperature of water at the outlet of last pipe is 101.1℃. The extracted energy from the flue gas is used to heat water to be utilized in the generator of a vapor absorption refrigeration system that has produced a refrigerating capacity of 70 TR. approximately. Due to the corrosive nature of flue gas, heat recovery is confined up to the acid dew point temperature of the flue gas. Suitable software is used to find out the detailed design parameters of Gas to liquid multi-pass cross flow heat exchangers. Out of many feasible designs of heat exchangers, the most economic design is selected as the final design. Keywords—Air Conditioning; Flue Gas; Heat Exchanger; Heat Recovery; Vapour Absorption Machine
Research Inventy : International Journal of Engineering and Scienceinventy
esearch Inventy : International Journal of Engineering and Science is published by the group of young academic and industrial researchers with 12 Issues per year. It is an online as well as print version open access journal that provides rapid publication (monthly) of articles in all areas of the subject such as: civil, mechanical, chemical, electronic and computer engineering as well as production and information technology. The Journal welcomes the submission of manuscripts that meet the general criteria of significance and scientific excellence. Papers will be published by rapid process within 20 days after acceptance and peer review process takes only 7 days. All articles published in Research Inventy will be peer-reviewed.
This paper describes an experimental study of using the waste heat from a Panasonic Under-
Ceiling split room air - conditioner had a rated capacity of 3.51 kW (12,000 Btu/h). An under – ceiling
split type air conditioning for heating domestic water in private homes. Energy recovery improved the
performance, and the recovered energy could replace electricity completely for heating domestic water
use. An extra charge of refrigerant in the air-conditioner could prevent its compressor from over heating
during energy recovery. The experimental conducted on varies capacity of the range from 22.5 litres to
120 litres storage tank. Results show the water temperature increased lies in the range of 50 OC to 65
OC. It was found that, when the initial water temperature in the 22.5 litres storage tank 27 OC, the water
temperature reached 65 OC in 105 minutes. For 120 litres water, temperature increased from 27 OC to 62
OC,5 in 240 minutes.
MERKELS METHOD FOR DESIGNING INDUCED DRAFT COOLING TOWERIAEME Publication
In general, cooling towers are used to dissipate process waste heat into the atmosphere. In this paper, induced draft cooling tower has been designed by simplified merkel’s method. The design of cooling tower is based on Merkel’s method. The t ower characteristic is determined by the ratio of range and log-mean-enthalpy difference. Optimization of the operating conditions for cooling tower applications in cooling water is extremely significant in order to get the most energy efficient operating point for these systems. A simple algebraic formula is used to calculate the optimum water-to-air flow rate. Merkel’s method is the most widely accepted theory for cooling tower calculations. It combines equations for heat and water vapor transfer. The objective of this paper is to present the design procedure of counter – flow cooling towers in a simplified manner
A REVIEW PAPER ON ANALYSIS OF AUTOMOBILE RADIATORijsrd.com
An Automotive engine cooling system takes out of excess heat produced during engine operation. An automobile cooling system regulates engine surface temperature for engine optimum efficiency. Recent advancement and development in engine for power forced engine cooling system to develop new strategies to improve its performance efficiency. Also to reduce fuel consumption along with controlling engine emission to mitigate environmental pollution norms. This paper throws light on parameters which influence radiator performance along with reviews some of the conventional and modern approaches to enhance radiator performance. This review paper Focus on the various research papers regarding experimental, CFD and Numerical analysis to improving automobile radiator efficiency.
Distribution, Habitat Utilization and Threats to Chinese Pangolin (Manis Pent...NAAR Journal
The Chinese Pangolin (Manis pentadactyla) is a unique mammal
having stiff scales, body shape slender like a reptile, burrow living and
highly nocturnal. It is receiving less scientific attention therefore
information on its ecology, behavior, status and distribution is still
scarce in Nepal. Pangolins are distributed in many districts and
protected areas of Nepal but are threatened due to habitat destruction,
illegal trade and lack of awareness. Thus, this research was conducted
to assess the distribution, habitat utilization and threats to Chinese
Pangolin in Mahabharat and Chure community forests of Sindhuli
district. The primary data were collected by using the methods adopted
in National Pangolin Survey, Nepal (2016). The sample size for
scheduled questionnaire survey was calculated by using the formula
given by Krejice and Morgan in 1970. The secondary data were
collected from the DFO, Sector forest office and community forest
office. Through field survey within the transect of 500 meters;
distribution of burrows, their geographical coordinates, slope,
elevation, canopy cover, soil moisture, soil colour and texture,
distance to settlement, water and road and number of ants/termites
mound were recorded. A total of 348 burrows were recorded including
206 (91 active, 115 inactive) in Mahabharat Community Forest and
142 (57 active, 85 inactive) in Chure Community Forest. The
elevation range of species was from 1400 m to 1700 m with maximum
number of burrows at slope range of 30⁰-40⁰ in Mahabharat
community forest. However, in Chure community forest, the elevation
range of species was from 900 m to 1300 m with maximum number of
burrows at slope range of 20⁰-30⁰. The highest frequency of burrows
was recorded in brown and light yellow colour soil in Mahabharat and
Chure community forest respectively. Mostly the burrows were
recorded in Schima wallichii and Shorea robusta dominant forests in Mahabharat and Chure community forest respectively. Poaching for
meat and traditional medicine and habitat destruction were major
threats to pangolin at the sites and their conservation status was found
to be worse.
Feedwater Heater Control: Bring Your Efficiency to a New Level -- Kevin Hambrice, Global Factory Sales and Marketing Manager-Level, K-TEK, A Member of the ABB Group
In this Thesis I will try to understand the concept associated with cooling towers and model a laboratory sized cooling tower in a software package called Engineering Equation Solver (EES). An example of system modelling is presented in this progress report, along with the comparison of a set of results with an experimental data from P.A Hilton Model H892 Bench top cooling tower with a maximum of 9% error. A user interface is also modelled to simulate off-design performance rather than conducting experiments. It also allows you to do additional scenarios that cannot be practically being done in lab,
like Relative humidity, etc.
Thermodynamic Analysis of a Cascade Refrigeration System Based On Carbon Diox...IJERA Editor
Thermodynamic analysis of a cascade refrigeration system that uses carbon dioxide-ammonia (R744-R717) as refrigerant is presented in this paper to determine the optimum condensing temperature of the cascade condenser at given design parameters, to maximize the COP of the system. The design and operating parameters considered in this study include (1) condensing, sub cooling, evaporating and super heating temperatures in the ammonia (R717) high-temperature circuit, (2) temperature difference in the cascade heat exchanger, and (3) evaporating, superheating, condensing and sub cooling in the carbon dioxide (R744) low-temperature circuit. A multilinear regression analysis was employed in order to develop two useful correlations for maximum COP, and optimum condensing temperature.
Performance Enhancement of an Air Conditioner with Condensate Mist Cooled Con...IJMTST Journal
This paper presents a simple and efficient methodology to design a household (and can also be used for
commercial air conditioning purposes) air conditioner, predicts the performance of air conditioning unit and
how the thermal performance can be improved, when the water mist system is coupled with the air cooled
conditioner as a pre-cool for condenser inlet air to increase the cooling capacity, and decrease the compressor
power consumption. Inputs for formulation include inlet air DBT and humidity ratio, air velocity, water
temperature and flow rate, and geometrical properties of evaporative medium. Generally air conditioning
units are used for small and medium scale residential buildings and the large units are used for the
commercial purposes. Therefore, more energy efficiency and lower cost are needed along with reliable control
for the air conditioning units. The influence of condenser and evaporator inlet air temperatures on the cooling
capacity and power consumption has been investigated and presented. It has been found that due to the
coupling of water mist with air cooled condenser, the cooling capacity of the air-cooled,air conditioner can be
increased up to 17.5%, and the compressor power consumption can be reduced up to 15.5%. Thus, it is
concluded that the application of water mist condenser, inlet air pre-cooling could increase the COP by up to
37%, especially when the ambient relative humidity is low[10].
Effect of Combustion Air Pre-Heating In Carbon Monoxide Emission in Diesel Fi...IJERA Editor
This paper describes the effect of combustion air pre- heating in Diesel fired heat Treatment Furnace. The main
heat treatment processes are Normalizing, Tempering, Hardening, Annealing, Solution Annealing and Stress
Relieving. The emission of carbon monoxide is measured with combustion air pre-heating and without preheating.
The results are then compared and it is found that the emission of CO is reduced by 29.12%. With the
Combustion air pre-heating a considerable reduction in Specific Furnace Fuel Consumption (SFFC) is obtained.
The test was caaried out at Peekay Steels Casting (P) ltd, Nallalam, Calicut.
General Terms: Heat Treatment Furnace
PERFORMANCE ANALYSIS OF A COMBINED CYCLE GAS TURBINE UNDER VARYING OPERATING ...meijjournal
The combined cycle gas turbine integrates the Brayton cycle as topping cycle and the steam turbine
Rankine cycle as bottoming cycle in order to achieve higher thermal efficiency and proper utilization of
energy by minimizing the energy loss to a minimum. In this work, the effect of various operating
parameters such as maximum temperature and pressure of Rankine cycle, turbine inlet temperature and
pressure ratio of Brayton cycle on the net output work and thermal efficiency of the combine cycle are
investigated. The outcome of this work can be utilized in order to facilitate the design of a combined cycle
with higher efficiency and output work. A MATLAB simulation has been carried out to study the effects and
influences of the above mentioned parameters on the efficiency and work output.
WASTE HEAT RECOVERY TO INCREASE BOILER EFFICIENCY USING BAGASSE AS FUEL IAEME Publication
Many industrial heating processes generate waste energy in textile industry; especially exhaust gas from the boiler at the same time reducing global warming. Waste heat found in the
exhaust gas can be used to preheat the incoming gas. This is one of the basic methods for recovery of waste heat. Therefore, this article will present a study the way to recovery heat waste from boiler exhaust gas by mean of shell and tube heat exchanger.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
Thermal analysis of cooling effect on gas turbine bladeeSAT Journals
Abstract Performance of a gas turbine is mainly depends on various parameters e.g. ambient temperature, compressor pressure ratio, turbine inlet temperature etc. The most important parameter to increase the life of the turbine blade is the cooling of the blade, which is necessary after reaching a certain temperature of the gases passing through the blades. Various types of cooling models are available for a turbine blade cooling. The power output of a gas turbine depends on the mass flow rate through it. This is precisely the reason why on hot days, when air is less dense, power output falls off. This paper is to analyze the film cooling technique that was developed to cool gases in the initial stages of the turbine blades, where temperature is very high (>1122 K). It is found that the thermal efficiency of a cooled gas turbine is less as compare to the uncooled gas turbine for the same input conditions. The reason is that the temperature at the inlet of the turbine is decreased due to cooling and the work produced by the turbine is slightly decreased. It is also found that the power consumption of the cool inlet air is of considerable concern since it decreases the net power output of gas turbine. In addition, net power decreases on increasing the overall pressure ratio. Furthermore, the reviewed works revealed that the efficiency of the cooled gas turbine largely depends on the inlet temperature of the turbine and previous research said that the temperature above 1123K, require cooling of the blade. Keywords: Gas turbine, Turbine blade cooling, film cooling technique, Thermal Efficiency
Design and Fabrication of Vapour Absorption Refrigeration System [Libr-H20]IJMER
Most of the energies are utilized by the industries due to depletion of fossil fuels and
increasing the fuel price to exploit the maximum presented energy from the waste heat source. The
industry which utilizes steam turbine exhaust carries a considerable amount of thermal energy. This
energy can be set in to positive use as a heat source for vapour absorption system to serves as cooling
system. This paper illustrates the thermal and fiscal advantages of using single effect lithium bromide
water absorption by means of waste heat. The objective of this work is to hypothetical design of lithium
bromide water absorption Refrigeration system using waste heat from any industry steam turbine
exhaust
The effect of Al2O3 nanoparticles on the performance of heat pump to improve its
operational efficiency was presented in this theoretical and experimental study. In the
experimental work the heat pump charged with R600a inclusive with 0.06 % vol. of
Al2O3 and used as a nanorefrigerant. Three different nanoparticles size 20nm, 40 nm
and 50 nm of Al2O3 have been used for the preparation of nanolubricant in the present
study. The theoretical approach includes simulations modeling the heat pump
components such as compressor, evaporator, condenser and an expansion valve by
computer of the heat pump system by using commercial MATLAB. The results showed
that the addition of nanoparticles to the refrigerant will improve its characteristics of
refrigeration system heat transfer and thermal properties. Also, it showed that the
using nanorefrigerant in refrigeration system will work normally at all conditions
employed in this work. The experimental results found that the heat pump coefficient
of performance increased by 19.1%, but the power consumption reduced by 21.8 %
when using a mineral oil with 20 nm nanoparticles size of Al2O3 instead of the
conventional mineral oil only. Finally, the refrigeration effect increased and work of
compressor decreased by using a small nanoparticles size of Al2O3
OPTIMIZATION OF AN ORGANIC RANKINE CYCLE IN ENERGY RECOVERY FROM EXHAUST GASE...IAEME Publication
This paper describes thermal analysis and optimization of an organic Rankine cycle (ORC) integrated with a power generating stationary diesel engine. A simple ORC, with a regenerator, is considered here as a bottoming cycle for producing additional power by recovering waste energy
from the exhaust gases of the engine. Taking evaporation pressure and condensation temperature as two decision variables, a genetic algorithm is used for simultaneously maximizing three objective functions - exergy efficiency, thermal efficiency, and specific network.
CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
An inspection had shown that a significant amount of hot flue gas was bypassing the boiler tubes, where the heat was supposed to be transferred.
R&R Consult conducted a CFD analysis, which revealed that 6.3% of the flue gas was bypassing the boiler tubes without transferring heat. The analysis also showed that the flue gas was instead being directed along the sides of the boiler and between the modules that were supposed to capture the heat. This was the cause of the reduced performance.
Based on our results, Tetra Engineering installed covering plates to reduce the bypass flow. This improved the boiler's performance and increased electricity production.
It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
Cosmetic shop management system project report.pdfKamal Acharya
Buying new cosmetic products is difficult. It can even be scary for those who have sensitive skin and are prone to skin trouble. The information needed to alleviate this problem is on the back of each product, but it's thought to interpret those ingredient lists unless you have a background in chemistry.
Instead of buying and hoping for the best, we can use data science to help us predict which products may be good fits for us. It includes various function programs to do the above mentioned tasks.
Data file handling has been effectively used in the program.
The automated cosmetic shop management system should deal with the automation of general workflow and administration process of the shop. The main processes of the system focus on customer's request where the system is able to search the most appropriate products and deliver it to the customers. It should help the employees to quickly identify the list of cosmetic product that have reached the minimum quantity and also keep a track of expired date for each cosmetic product. It should help the employees to find the rack number in which the product is placed.It is also Faster and more efficient way.
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
Hierarchical Digital Twin of a Naval Power SystemKerry Sado
A hierarchical digital twin of a Naval DC power system has been developed and experimentally verified. Similar to other state-of-the-art digital twins, this technology creates a digital replica of the physical system executed in real-time or faster, which can modify hardware controls. However, its advantage stems from distributing computational efforts by utilizing a hierarchical structure composed of lower-level digital twin blocks and a higher-level system digital twin. Each digital twin block is associated with a physical subsystem of the hardware and communicates with a singular system digital twin, which creates a system-level response. By extracting information from each level of the hierarchy, power system controls of the hardware were reconfigured autonomously. This hierarchical digital twin development offers several advantages over other digital twins, particularly in the field of naval power systems. The hierarchical structure allows for greater computational efficiency and scalability while the ability to autonomously reconfigure hardware controls offers increased flexibility and responsiveness. The hierarchical decomposition and models utilized were well aligned with the physical twin, as indicated by the maximum deviations between the developed digital twin hierarchy and the hardware.
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
1. International Journal of Scientific Research and Engineering Development-– Volume 2 Issue 5, Sep – Oct 2019
www.ijsred.comAvailable at
ISSN:2581-7175Page 139
Cooling of Compressor Air Inlet of a Gas Turbine Power Plant
Using A Single Effect LiBr-Water Vapor Absorption Cycle
1
Fayez M. S. Al Essa, 2
Hamza Al-Tahaineh, 3
M. Frihat
1,2,3
(Mechanical Engineering Department, Al-Huson University College, Al-Balqa Applied University, Irbid, Jordan.)
2
Corresponding author, Email: h-tahaineh@bau.edu.jo
ABSTRACT
LiBr-water absorption cooling system is designed to improve the performance of a gas turbine power
plant in by cooling the air inlet to the compressor. The analysis were carried out for various exhaust gas
turbine temperatures (150-220) °C . Results of analysis show a noticeable improvement on thermal
efficiency of the gas turbine, and the cooling capacity has been getting cooler air up to 5 °C for
(Tamb=35°C).
Keywords: Gas Turbine, Inlet Air Cooling, Absorption Refrigeration, Ejector, Regenerative Gas Turbine.
NOMENCLATURE
ARC Absorption Refrigeration Cycle.
COP Coefficient of Performance.
e heat exchanger effectiveness
EES Engineering Equation Solver.
h enthalpy (kJ/kg)
m mass flow rate (kg/s)
P pressure.
RGT Regenerative Gas Turbine.
SGT Simple Gas Turbine.
T temperature (o
C)
x concentration (mass fraction)
SUBSCRIPT
amb ambient.
g generator (desorber).
LiBr Lithium Bromide.
r refrigerant.
ss strong solution.
ws weak solution.
1. NTRODUCTION
The most efficient commercial technology for central station power-only generation is the gas turbine-
steam turbine combined-cycle plant. Simple-cycle gas turbines for power-only generation are available
with efficiencies approaching 40%. Gas turbines have long been used by utilities for peaking capacity.
2. International Journal of Scientific Research and Engineering Development-– Volume 2 Issue 5, Sep – Oct 2019
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However, with changes in the power industry and advancements in the technology, the gas turbine is now
being increasingly used for base-load power. The basic components of a gas turbine are compressor, a
combustion chamber, and a turbine [1].
The feasibility of waste heat utilization in a process is dictated by the temperature, quantity, and
availability of the waste heat source. There are a number of benefits to implementing waste heat
utilization measures, the primary benefit being a reduction in the energy demand of the process. Increased
energy efficiency has a number of ancillary benefits, including reducing primary energy input, reducing
carbon dioxide and other emissions, and reducing operating costs. Thus waste heat utilization is an
attractive improvement when feasible.
There have been numerous investigations into the feasibility of waste heat for various applications,
including water desalination, air conditioning, gas turbine performance improvements, and vapor
compression cycle enhancements [2].
The performance of the power plant strongly depends on ambient air temperature. Mass flow rate (kg/s)
of air decreases in summer with increasing ambient air temperature for the same volumetric flow rate
(m3
/s), which results in reduced power output of turbine and increased heat rate [3].
The reduction of inlet air temperature can be achieved by the application of air cooling through water
atomization or installing a chiller in the inlet ducting. The use of a cooler or chiller is economically
justified if the profits from the increase in power exceed the related capital and operating costs and the
climate conditions for effective operation are met. Evaporative cooling, achieved by evaporation of water
injected into the inlet duct, is a cost-effective way of recovering turbine capacity during high temperature
and low or moderate humidity periods. This method is hindered by ambient temperatures of 10 -15 o
C and
above. In lower temperatures there is a higher risk of ice formation on the compressor’s inlet guide vanes.
Chillers, unlike evaporative coolers, are not limited by the wet bulb temperature. The possible power gain
is restrained by the turbine and the capacity of the chilling device to produce coolant and heat exchange
limits between coils and air [4].
Ana Paula P. dos Santos, and others, studied and compare the effect of different methods available for
reducing gas turbine inlet temperature. Basically, the evaporative cooling and chilling the inlet air.
Evaporative cooler and absorption chiller systems results show that when the ambient temperature is
extremely high with low relative humidity (requiring a large temperature reduction) the chiller is the more
suitable cooling solution. The net increment in the power output as a function of the temperature decrease
for each cooling method is also obtained [5].
An inherent characteristic of all gas turbines (GT) is their inability to maintain constant power output as
ambient temperature increases or at high elevation. Consequently, electrical generation and horsepower
output are in greatest demand at high ambient temperatures. On a 35°C (95°F) day, a GT’s air mass flow-
rate is reduced by up to 10% and power reduced by 15% compared to its ISO performance [6].
Dayyabu Gambo Kofar-Bai and Qun Zheng, studied the effect of evaporative cooling of gas turbine
power plant of some particular stations in Nigeria. Their results show that evaporative cooling of gas
turbine decreases the compression work of the compressor and increases the efficiency of the station [7].
In this project, the effect of inlet air cooling by a single effect water-LiBr vapor absorption cooling
system on gas turbine performance will be studied. Since, coefficient of performance (COP) of absorption
refrigeration cycle (ARC) is low, with high pressure ratios in simple gas turbine (SGT) and with low
pressure ratios in regenerative gas turbine (RGT).
3. International Journal of Scientific Research and Engineering Development-– Volume 2 Issue 5, Sep – Oct 2019
www.ijsred.comAvailable at
ISSN:2581-7175Page 141
2. REHAB SIMPLE CYCLE GAS TURBINE SPESIFICATIONS
Rehab Power Plant is located in the northern region of Jordan closed to central load area. The four-gas-
turbine units are GT10 (30 MW Unit), GT11 (30 MW Unit), GT12 (100 MW Unit), GT13 (100 MW
Unit). Figure (1) illustrates the simple cycle power plant (open cycle) which present the principle of
operation for GT10 and GT11 and for GT12.
In a gas turbine, large volumes of air are compressed to high pressure in a multistage compressor for
distribution to combustion chamber. Product gases from chamber power an axial turbine that drives the
compressor and the generator before exhausting to atmosphere. The latest gas turbine designs use turbine
inlet temperatures of 1500 ºc and compression ratios as high as 30:1 giving thermal efficiencies up to
35% for simple cycle gas turbine [8].
A specific gas turbine model was selected to determine the temperature and quantity of waste heat
available, The GE MS5001 model used in Rehab Power Station in the northern of Jordan was selected
with the following specifications:
Table 1 GE MS5001 Gas turbine specifications
Specification Value Unit
Rated Power 24.6 MW
Air Flow Rate 118 kg/s
Exhaust Temperature 484 °C
Efficiency 32.98 %
Pressure Ratio 10.5
The compressor model has ambient air as an inlet; the mass flow rate at the compressor inlet was
selected to be equal to the manufacturer given value of 118 kg/s for the gas turbine inlet and was kept
constant. The outlet, which goes to the combustion chamber, is determined by assuming zero pressure
drop at the compressor inlet, a compressor ratio of 10.5, and an isentropic efficiency of 83% [8].
The combustion chamber has two inlets, the compressor outlet and the fuel, the fuel was assumed to be
pure methane at 15 °C and 1300 kPa. At full load its mass flow rate is set to match the manufacturer-
specified firing temperature. Once the full load fuel rate is set in this case 6230 kg/hr, part loading is
simulated by adjusting the fuel mass flow rate. The chamber is assumed to have zero pressure drops. The
reactor products exit the combustion chamber and enter the turbine. The turbine’s isentropic efficiency is
assumed to be 85%, the pressure ratio is taken to be 10.5 and the pressure drop at the gas turbine exit is
assumed to be zero. The turbine exhaust is synonymous with the exhaust of the gas turbine [8].
The gas turbine exhaust goes to a heat exchanger block, which simulates the removal of waste heat.
Zero pressure drops was assumed, and the exit temperature of the block was selected to be 200 °C. This is
because condensation issues might arise at temperatures lower than 200 °C, thus, 200 °C is a conservative
approximation [9].
4. International Journal of Scientific Research and Engineering Development-– Volume 2 Issue 5, Sep – Oct 2019
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ISSN:2581-7175Page 142
Fig. 1. Modeling and simulation of a simple gas turbine in EES
3. ABSORPTION CHILLER
Aqueous lithium bromide is used as an absorption working fluid because it is one of the best choices
found among hundreds of working fluid pairs that have been considered. Aqueous lithium bromide is the
preferred choice for many applications, the thermodynamic and transport properties of working fluids are
considered to be good. Absorption chillers use a refrigerant-absorbent pair as a working fluid, the two
most common combinations of working fluids used are ammonia/water and water/Lithium Bromide.
The absorption chiller working principle is based on single stage single effect water-LiBr that uses
waste heat of exhaust gases to provide cooling of inlet air. The absorption chiller typically has a
coefficient of performance (COP) between 0.4 and 1.5, based on heat input.
The required temperature level is governed by the properties of the working fluid and the operation of the
other components in the chiller machine. For a typical single-effect aqueous lithium bromide machine, the
desorber heat must be supplied above a temperature of approximately 90 o
C. Thus, in processes where
low temperature waste heat is available and cooling is desired, it often makes sense to implement an
absorption chiller to increase the overall energy efficiency of the process [10].
Fig. 2. Single Effect Absorption Cycle
4. MODELING OF WATER-LIBR ABSORPTION CYCLE
5. International Journal of Scientific Research and Engineering Development-– Volume 2 Issue 5, Sep – Oct 2019
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Fig. 3. Schematic diagram of the recuperated cycle with absorption inlet cooling
For A single stage vapor absorption refrigeration system based on water/lithium bromide cycle shown
in the figure 2 and figure 3 . A set of operating conditions and assumptions for the cycle are as follow.
4.1. Operating Conditions and Assumptions
The pressure losses and heat transfer losses to the surroundings in the absorption cycle are ignored.
The condensing pressure of the refrigerant of the absorption system is equal to the pressure of condensing
steam at a temperature 10 °C above ambient temperature amounts 1555 kPa. The evaporator pressure of
the absorption system is constant and amounts to 288 kPa. The corresponding evaporator temperature is
1.5 °C. The evaporator pressure is chosen so that the inlet air can be cooled to a temperature that is close
to the required temperature for optimum operation. The concentrations of the strong and weak solutions
of the absorption system are 0.62 and 0.55 respectively. The assumed values are chosen within the
operating range of the Water/LiBr absorption systems and are commonly used. Minimum inlet
temperature to prevent icing at the compressor inlet is 12°C. The effectiveness of the absorption system
heat exchanger is 80 percent. Polytropic efficiency of compressor and turbine are 0.9 and 0.85
respectively. Combustion efficiency is 0.98 and its pressure drop is 5% of combustion chamber inlet
pressure.
5. THERMODYNAMIC ANALYSIS
Following the analysis done by H. A. Al-Tahaineh, applying energy balance on all the components of
the combined cycle [9].
5.1. Generator
Applying the energy equation for the desorber of the absorption system yields:
− = + −
Where h12 is the enthalpy of gas exiting the desorber m , m , m , m are respectively the mass flow
rates of gas entering the desorber, the weak solution exiting the desorber, the refrigerant exiting the
desorber and the strong solution entering the desorber h9 ,h10 , h1:and are the corresponding enthalpies.
Applying the mass balance equation yields:
6. International Journal of Scientific Research and Engineering Development-– Volume 2 Issue 5, Sep – Oct 2019
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ISSN:2581-7175Page 144
= +
Using the concentration–mass flow rate relation gives:
= ⁄
Where xss and xws are the concentrations of the strong and weak solutions respectively. Both
concentrations are known and equal to 0.62 and 0.55 by using assumptions, the high pressure of the cycle,
Phigh, is equal to the condenser pressure, and the low pressure of the cycle, Plow, is equal to the evaporator
pressure. The temperature of the outlet high-concentration mixture, T8 can be determined as a function of
its concentration and pressure using a program called Engineering Equation Solver (EES). As follows:
= ! , " #
The corresponding enthalpy of the high concentration mixture, h8 can be determined as a function of its
concentration and temperature using EES so that.
= , $
An equation can be written for the temperature of gas at the desorber outlet in relation to the
temperature of the high concentration mixture at point 8 of the cycle (figure 3).
= + % &
The gas pressure at the outlet of the desorber can be determined using assumption. The enthalpy of the
outlet gas can be determined as a function of its pressure and temperature using EES as:
= '() , *+
An equation can be written for the temperature of the outlet steam in relation to the outlet high-
concentration mixture at point 8 using the following assumption:
= − $
The enthalpy of the outlet steam can be determined as a function of its pressure and temperature using
EES as:
= !, ,
5.2. Heat Exchanger
The effectiveness of the heat exchanger of the absorption cycle is defined as:
=
- ,
- &
%
Where T9 and T6 are the temperatures of the outlet weak solution and inlet strong solution respectively.
The temperatures T6 can be determined as a function of pressure and concentration using EES as:
& = !,
7. International Journal of Scientific Research
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Applying the energy balance equation yields
− , = − &
Where h9 and h8 are the enthalpies of the outlet strong solution and inlet
enthalpy h9 can be determined as a function of the temper
EES as:
, = !,
Equations (1 to 13) are solved simultaneously for the unknowns h
T1 , T9 , T6 , T8 and T12 using EES. The results were presented in figures (
6. RESULTS
From the previous analysis of the designed
entering the compressor and as a result the performance of the power plant will be better.
were carried out for various exhaust gas turbine temperatures
been getting cooler air up to 5 °C for (T
below.
Fig. 4. Cooling capacities of chiller designs at various
International Journal of Scientific Research and Engineering Development-– Volume 2 Issue 5, Sep
Available at
Applying the energy balance equation yields:
are the enthalpies of the outlet strong solution and inlet weak solution respectively. The
can be determined as a function of the temperature and concentrations of the solutions using
) are solved simultaneously for the unknowns h1, h9 , h6 , h8 , h7 , h
The results were presented in figures (4-8) shown below.
designed absorption cooling cycle. The outside air is
as a result the performance of the power plant will be better.
gas turbine temperatures (150-220 °C) and the cooling
(Tamb=35°C ). The results of this study are shown in Figure 3 and 4
capacities of chiller designs at various exhaust (generator) temperatures (T13)
Volume 2 Issue 5, Sep – Oct 2019
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ISSN:2581-7175
ion respectively. The
and concentrations of the solutions using
, h12 , m , m ,m ,
) shown below.
The outside air is cooled before
as a result the performance of the power plant will be better. The analysis
and the cooling capacity has
The results of this study are shown in Figure 3 and 4
8. International Journal of Scientific Research
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Fig. 5. Inlet air cooled
The inlet air cooling improves both the efficiency and the work net of the gas turbine cycle
the Figures (6) and (7) below. As a result of decreasing inlet air temperature, t
plant improved by about 5.1 percent
percent.
Fig. 6. Inlet
International Journal of Scientific Research and Engineering Development-– Volume 2 Issue 5, Sep
Available at
Inlet air cooled °C at various exhaust temperatures (T13)
cooling improves both the efficiency and the work net of the gas turbine cycle
As a result of decreasing inlet air temperature, the work net
percent and the efficiency of the power plant improved
Inlet cooling improves the work net of the gas turbine cycle
Volume 2 Issue 5, Sep – Oct 2019
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ISSN:2581-7175
cooling improves both the efficiency and the work net of the gas turbine cycle as shown in
he work net of the power
improved by about 0.40
9. International Journal of Scientific Research and Engineering Development-– Volume 2 Issue 5, Sep – Oct 2019
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Fig. 7. inlet cooling improves the work net of the gas turbine cycle
7. CONCLUSIONS
Most of the energy lost in the gas turbine power plant is carried out with the exhaust gases which will
cause a significant reduction in the work net out of the turbine and the overall thermal efficiency. On the
other hand, It was shown clearly that the generated power and efficiency of the gas turbine plants affected
to a high degree by the temperature of the compressor inlet air. So that they both (Wnet and Efficiency)
increase as the inlet air temperature decreases. Installing a single-stage water-LiBr absorption cooling
chiller at gas turbine inlet, and running with thermal energy of exhaust gases reduces the air inlet
temperature to a good degree. The results of investigation show that the compressor air inlet temperature
decreases as the exhaust temperatures (T11) increase. As a result the net work of the gas turbine will
increase. Absorption cooling could improve efficiency by about 0.40 percent and improve the work net
cycle by about 5.1 percent.
8. REFERENCES
[1] Anoop Kumar Shukla & Onkar Singh, Effect of Compressor Inlet Temperature & Relative Humidity on Gas Turbine Cycle Performance,
International Journal of Scientific & Engineering Research, Volume 5, Issue 5, May-2014.
[2] Wadhah Hussein Abdul Razzaq Al- Doori, Parametric Performance of Gas Turbine Power Plant with Effect Intercooler, Modern Applied
Science, Vol. 5, No. 3; June 2011
[3] Sarabpreet Singh, Rajesh Kumar, AMBIENT AIR TEMPERATURE EFFECT ON POWER PLANT PERFORMANCE, International Journal of
Engineering Science and Technology, Vol. 4 No.08 August 2012.
[4] Ewa Pyzik, S. Jarzebowski , A. Miller, Impact of inlet air cooling on gas turbine performance, Journal of Power Technologies 92 (4), 249-257,
2012.
[5] Ana Paula P. dos Santos, Claudia R. Andrade and Edson L. Zaparoli, Comparison of Different Gas Turbine Inlet Air Cooling Methods,
International Journal of Aerospace and Mechanical Engineering, Vol:6, No:1, 2012.
[6] Steven Quisenberry, Efficient Power Augmentation with Dry Air Injection, SYMPOSIUM OF THE INDUSTRIAL APPLICATION OF GAS
TURBINES COMMITTEE BANFF, ALBERTA, CANADA OCTOBER 2015.
[7] Dayyabu Gambo Kofar-Bai and Qun Zheng, Climate Effects on Cooling Degree-Hours and Evaporative Cooling of Gas Turbine, Journal of
Clean Energy Technologies, Vol. 5, No. 5, September 2017.
[8] Natural Gas daily Quantities Report” National Electric Power Company, 2017, http://www.cegco.com.jo/Admin_Site/Files/PDF/2bc98304-1e1a-
4dfa-9663-ae29d0c53326.pdf.
[9] H. A. Al-Tahaineh, Cooling of Compressor Air Inlet of a Gas Turbine Power Plant Using Ammonia-Water Vapor Absorption System,
International Journal of Energy Engineering, 3(5): 267-271, 2013.
[10] Keith E. Herold, Reinhard Radermacher, Sanford A. Klein, ABSORPTION CHILLERS AND HEAT PUMPS, 2nd
Edition, Taylor & Francis
Group, LLC, 2016.