The document describes experiments conducted to enhance the performance of a household refrigerator by adding TiO2 nanoparticles to the compressor oil. Three experiments were performed: 1) with PAG oil, 2) with SUNISO 3GS oil, and 3) with SUNISO 3GS oil mixed with 0.05% TiO2 nanoparticles. Results showed that actual COP increased by 21% with pure SUNISO 3GS oil and by 35% with the nano-lubricant oil mixture compared to PAG oil. Power consumption was also reduced by 17.25% with pure SUNISO 3GS oil and 25.83% with the nano-lubricant oil. The nano-lubricant improved heat transfer and reduced friction inside the
To study the application of nanorefrigerant in refrigeration system a revieweSAT Journals
Abstract In past time only refrigerants were used in refrigeration process and they were having a global warming coefficient at high level. Now, as time change the modern techniques are coming into existence with the help of them the refrigeration process become more efficient and safe as compare to previous in atmospheric prospective. This review paper is based on the nanotechnologies used in present time in refrigeration system like vapour compression refrigeration system, domestic refrigerator and air conditioner etc. The nano refrigerant is nothing but the combined form of nano particle with the refrigerant. The nanorefrigerant can be formed by two ways (1) by mixing nano particles with refrigerant in gaseous form, (2) by mixing nano particles to lubricant. We will combine different nano particles having the same diameter and same volume fraction with the lubricant to study the nature of thermo-physical properties in refrigeration process. There would be some parameters that can be studied by this experiment like energy consumption, heat transfer, cop etc. Keywords: nano particles, nano refrigerant, heat transfer coefficient, COP, Energy consumption.
Heat Recovery System in Domestic RefrigeratorIjrdt Journal
Refrigeration is a process in which work is done to move heat from one location to another. Refrigeration technology has rapidly evolved in last century from ice harvesting to temperature controlled rail cars. Most widely used current application of refrigeration is for air-conditioning of homes and public buildings. During refrigeration, heat from the refrigerant is dissipated for the successful completion of a refrigeration cycle. In normal household refrigerators, the heat from the refrigerant is removed using a condenser where the refrigerant cools and the air surrounding the condenser heats up. The strategy of how to recover the dissipated heat to develop a waste heat recovery system is relevant. The energy lost in waste heat cannot be fully recovered. However, much of the heat can be recovered and the loss can be minimized by adopting different measures. Hot air can be used for space heating, industrial drying, preheating aspirated air for oil burners, or any other application requiring warm air. The purpose of this project is to demonstrate the technical feasibility of a heat recovery system to recover waste heat from the condenser in the refrigerator and to reuse it for heating application.
This slide is about some new green cooling system (refrigeration system) and green refrigerant. For the Ozone layer depletion and green house effect, it is high time to find new refrigerant and refrigeration system.
To study the application of nanorefrigerant in refrigeration system a revieweSAT Journals
Abstract In past time only refrigerants were used in refrigeration process and they were having a global warming coefficient at high level. Now, as time change the modern techniques are coming into existence with the help of them the refrigeration process become more efficient and safe as compare to previous in atmospheric prospective. This review paper is based on the nanotechnologies used in present time in refrigeration system like vapour compression refrigeration system, domestic refrigerator and air conditioner etc. The nano refrigerant is nothing but the combined form of nano particle with the refrigerant. The nanorefrigerant can be formed by two ways (1) by mixing nano particles with refrigerant in gaseous form, (2) by mixing nano particles to lubricant. We will combine different nano particles having the same diameter and same volume fraction with the lubricant to study the nature of thermo-physical properties in refrigeration process. There would be some parameters that can be studied by this experiment like energy consumption, heat transfer, cop etc. Keywords: nano particles, nano refrigerant, heat transfer coefficient, COP, Energy consumption.
Heat Recovery System in Domestic RefrigeratorIjrdt Journal
Refrigeration is a process in which work is done to move heat from one location to another. Refrigeration technology has rapidly evolved in last century from ice harvesting to temperature controlled rail cars. Most widely used current application of refrigeration is for air-conditioning of homes and public buildings. During refrigeration, heat from the refrigerant is dissipated for the successful completion of a refrigeration cycle. In normal household refrigerators, the heat from the refrigerant is removed using a condenser where the refrigerant cools and the air surrounding the condenser heats up. The strategy of how to recover the dissipated heat to develop a waste heat recovery system is relevant. The energy lost in waste heat cannot be fully recovered. However, much of the heat can be recovered and the loss can be minimized by adopting different measures. Hot air can be used for space heating, industrial drying, preheating aspirated air for oil burners, or any other application requiring warm air. The purpose of this project is to demonstrate the technical feasibility of a heat recovery system to recover waste heat from the condenser in the refrigerator and to reuse it for heating application.
This slide is about some new green cooling system (refrigeration system) and green refrigerant. For the Ozone layer depletion and green house effect, it is high time to find new refrigerant and refrigeration system.
To study the behaviour of nanorefrigerant in vapour compression cycle a revieweSAT Journals
Abstract Nanofluid is an advanced kind of fluid, which contain nanometer sized (10-9 m) solid particles that are known as nanoparticles. Nanoparticles enhance the property of normal fluid. In past five years, nanorefrigerant has become the input for large number of experimental and vapour compression systems because of shortage of energy and environmental considerations. The conventional refrigerants have major role in global warming and depletion of the ozone layer. Therefore, there is need to improve the performance of vapour compression refrigeartion system with the help of using suitable refrigerant. Nearly all the works carried out in relation with nanofluids in vapour compression is regarding their applications in systems like domestic refrigerators and industrial purposes etc. The present paper investigate the performance of the nanorefrigerant in vapour compression cycle and the challenges of using nanorefrigerants in vapour compression cycle. Keywords: Nanofluids, nanoparticles, nanometer, nanorefrigerants, vapour compression, ecofriendly, domestic refrigerator
Storage of commodities at low temperature increases the shelf life. Proper understanding of storage system is necessary for desire cooling effect. Basic information regarding refrigeration is explained here. Design parameters are also give to be considered.
refrigerator and Air Condition,application, unit and COP, COP, types of refrigeration system, ideal properties for a refrigerant , Refrigeration Cycle, Bell- Colman Cycle, Vapour Compression Cycle,
REFRIGERATION- HEAT RECOVERY SYSTEM BY USING WATER HEATER CHAMBER IN BETWEEN...Dhananjay Parmar
The heat from the condenser side is dissipated to the room air. If this heat is not utilized it simply becomes the waste heat.
The rejected heat could be used to operate any other low grade heat required refrigeration system.
WASTE HEAT RECOVERY IN DOMESTIC REFRIGERATION SYSTEM IN THE APPLICATION OF WA...Journal For Research
Heat is the energy, so energy saving is one of the key matters for the protection of global environment. Heat also radiated from our domestic refrigerator. This waste heat from refrigerator will affect the environmental because as heat in the environment will increases it will cause global warming. So it is necessary that a significant effort should be made for conserving energy through waste heat recovery too. So An attempt has been made to utilize waste heat from condenser of refrigerator. This heat can be used for various of domestic and industrial purposes. In minimum constructional, maintenance and running cost, this system is very useful for domestic purpose. It is valuable alternative approach to increase overall efficiency and reuse the waste heat. The study has shown that such a system is technically feasible and economical. This system is a cabin that we are going to install over the head of the simple refrigerator, this cabin will be an arrangement of coils that will work as a heat exchanger for reuse of waste heat. These coils are hot coils of condenser of the refrigerator that will be modified and will put in the cabin. It can serve the purpose of cooking, geysers etc. Besides, the refrigerator may be used as conventional refrigerator. Further COP will also increase. Heat rejection may occur directly to the air in the case of a conventional household domestic refrigerator having air-cooled condenser. This system rejected less heat to the environment so it is safer in environmental aspects also.
In the aftermath of Montreal Protocol, World is moving towards more eco friendly refrigerants. With zero ozone depletion potential and very less global warming potential, Hydrocarbon refrigerants seem to be promising.
Design and Performance Evaluation of an Indirect Evaporative Air Cooler IDES Editor
This paper presents design of small indirect evaporative air cooler which is developed as a cross flow heat exchanger and its performance evaluation under controlled environmental conditions. The experimental results are compared with the results of an analytical model developed by assuming constant water film temperature on the heat exchanger tubes. The experimental results of the cooler show a satisfactory agreement with the analytical values. The analytical results show that low inlet humidity and higher inlet temperature of the comfort air results in an increase in both cooling effect and cooling capacity. A very low velocity of comfort air gives more cooling effect but the cooling capacity
declines. For given inlet conditions and for given length of the tubes, a tube diameter of around 2 mm results in better cooling capacity.
Design &Analysis of Waste Heat Recovery System for Domestic RefrigeratorIJMER
Heat is energy, so energy saving is one of the key matters from view point of fuel consumption
and for the protection of global environment. So it is necessary that a significant and concrete effort should
be made for conserving energy through waste heat recovery too. The main objective of this paper is to study
“Waste Heat recovery system for domestic refrigerator”. An attempt has been made to utilize waste heat
from condenser of refrigerator. This heat can be used for number of domestic and industrial purposes. In
minimum constructional, maintenance and running cost, this system is much useful for domestic purpose. It
is valuable alternative approach to improve overall efficiency and reuse the waste heat. The study has
shown that such a system is technically feasible and economically viable.
Inlet Air Cooling system from Ikeuchi Improve gas Turbine efficiencyH.Ikeuchi & Co.,Ltd
Gas Turbine Inlet air cooling:
Improve the efficiency of the Gas Turbine users by reducing the operation cost
Reduces the work of compressor pressure ratio and increase in the mass flow of the working fluid
Advantage of the Gas Turbine inlet air cooling system of Ikeuchi:
Increase the power generation of Gas Turbine , specially in the peak demand time
Higher Revenue Generation
Low maintenance and running cost
Installation is very easy and fast effective
Helping in monitoring process parameters
Hassle free automated operation
And much more
IKEUCHI‘s spray nozzles and fog technologies have played a vital role in a broad range of industries. With more than 67 years old experience with more than 42,000 standard nozzle types to choose from, IKEUCHI offers a truly extensive lineup. There are unlimited possibilities for our nozzles and nozzle-related products to be used in any industry and new application.
To study the behaviour of nanorefrigerant in vapour compression cycle a revieweSAT Journals
Abstract Nanofluid is an advanced kind of fluid, which contain nanometer sized (10-9 m) solid particles that are known as nanoparticles. Nanoparticles enhance the property of normal fluid. In past five years, nanorefrigerant has become the input for large number of experimental and vapour compression systems because of shortage of energy and environmental considerations. The conventional refrigerants have major role in global warming and depletion of the ozone layer. Therefore, there is need to improve the performance of vapour compression refrigeartion system with the help of using suitable refrigerant. Nearly all the works carried out in relation with nanofluids in vapour compression is regarding their applications in systems like domestic refrigerators and industrial purposes etc. The present paper investigate the performance of the nanorefrigerant in vapour compression cycle and the challenges of using nanorefrigerants in vapour compression cycle. Keywords: Nanofluids, nanoparticles, nanometer, nanorefrigerants, vapour compression, ecofriendly, domestic refrigerator
Storage of commodities at low temperature increases the shelf life. Proper understanding of storage system is necessary for desire cooling effect. Basic information regarding refrigeration is explained here. Design parameters are also give to be considered.
refrigerator and Air Condition,application, unit and COP, COP, types of refrigeration system, ideal properties for a refrigerant , Refrigeration Cycle, Bell- Colman Cycle, Vapour Compression Cycle,
REFRIGERATION- HEAT RECOVERY SYSTEM BY USING WATER HEATER CHAMBER IN BETWEEN...Dhananjay Parmar
The heat from the condenser side is dissipated to the room air. If this heat is not utilized it simply becomes the waste heat.
The rejected heat could be used to operate any other low grade heat required refrigeration system.
WASTE HEAT RECOVERY IN DOMESTIC REFRIGERATION SYSTEM IN THE APPLICATION OF WA...Journal For Research
Heat is the energy, so energy saving is one of the key matters for the protection of global environment. Heat also radiated from our domestic refrigerator. This waste heat from refrigerator will affect the environmental because as heat in the environment will increases it will cause global warming. So it is necessary that a significant effort should be made for conserving energy through waste heat recovery too. So An attempt has been made to utilize waste heat from condenser of refrigerator. This heat can be used for various of domestic and industrial purposes. In minimum constructional, maintenance and running cost, this system is very useful for domestic purpose. It is valuable alternative approach to increase overall efficiency and reuse the waste heat. The study has shown that such a system is technically feasible and economical. This system is a cabin that we are going to install over the head of the simple refrigerator, this cabin will be an arrangement of coils that will work as a heat exchanger for reuse of waste heat. These coils are hot coils of condenser of the refrigerator that will be modified and will put in the cabin. It can serve the purpose of cooking, geysers etc. Besides, the refrigerator may be used as conventional refrigerator. Further COP will also increase. Heat rejection may occur directly to the air in the case of a conventional household domestic refrigerator having air-cooled condenser. This system rejected less heat to the environment so it is safer in environmental aspects also.
In the aftermath of Montreal Protocol, World is moving towards more eco friendly refrigerants. With zero ozone depletion potential and very less global warming potential, Hydrocarbon refrigerants seem to be promising.
Design and Performance Evaluation of an Indirect Evaporative Air Cooler IDES Editor
This paper presents design of small indirect evaporative air cooler which is developed as a cross flow heat exchanger and its performance evaluation under controlled environmental conditions. The experimental results are compared with the results of an analytical model developed by assuming constant water film temperature on the heat exchanger tubes. The experimental results of the cooler show a satisfactory agreement with the analytical values. The analytical results show that low inlet humidity and higher inlet temperature of the comfort air results in an increase in both cooling effect and cooling capacity. A very low velocity of comfort air gives more cooling effect but the cooling capacity
declines. For given inlet conditions and for given length of the tubes, a tube diameter of around 2 mm results in better cooling capacity.
Design &Analysis of Waste Heat Recovery System for Domestic RefrigeratorIJMER
Heat is energy, so energy saving is one of the key matters from view point of fuel consumption
and for the protection of global environment. So it is necessary that a significant and concrete effort should
be made for conserving energy through waste heat recovery too. The main objective of this paper is to study
“Waste Heat recovery system for domestic refrigerator”. An attempt has been made to utilize waste heat
from condenser of refrigerator. This heat can be used for number of domestic and industrial purposes. In
minimum constructional, maintenance and running cost, this system is much useful for domestic purpose. It
is valuable alternative approach to improve overall efficiency and reuse the waste heat. The study has
shown that such a system is technically feasible and economically viable.
Inlet Air Cooling system from Ikeuchi Improve gas Turbine efficiencyH.Ikeuchi & Co.,Ltd
Gas Turbine Inlet air cooling:
Improve the efficiency of the Gas Turbine users by reducing the operation cost
Reduces the work of compressor pressure ratio and increase in the mass flow of the working fluid
Advantage of the Gas Turbine inlet air cooling system of Ikeuchi:
Increase the power generation of Gas Turbine , specially in the peak demand time
Higher Revenue Generation
Low maintenance and running cost
Installation is very easy and fast effective
Helping in monitoring process parameters
Hassle free automated operation
And much more
IKEUCHI‘s spray nozzles and fog technologies have played a vital role in a broad range of industries. With more than 67 years old experience with more than 42,000 standard nozzle types to choose from, IKEUCHI offers a truly extensive lineup. There are unlimited possibilities for our nozzles and nozzle-related products to be used in any industry and new application.
General overview of HVAC Technology
General overview of VRF Technology
Benefits of VRF
General overview of Refrigerant
General overview of Ton
General overview of Compressor
Process Heaters, Furnaces and Fired Heaters: Improving Efficiency and Reducin...Belilove Company-Engineers
A process heater is a direct-fired heat exchanger that uses the hot gases of combustion to raise the temperature of a feed owing through coils of tubes aligned throughout the heater. Depending on the use, these are also called furnaces or red heaters. Some heaters simply deliver the feed at a predetermined temperature to the next stage of the reaction process; others perform reactions on the feed while it travels through the tubes.
Improving and Comparing the Coefficient of Performance of Domestic Refgirator...ijceronline
International Journal of Computational Engineering Research (IJCER) is dedicated to protecting personal information and will make every reasonable effort to handle collected information appropriately. All information collected, as well as related requests, will be handled as carefully and efficiently as possible in accordance with IJCER standards for integrity and objectivity.
Democratizing Fuzzing at Scale by Abhishek Aryaabh.arya
Presented at NUS: Fuzzing and Software Security Summer School 2024
This keynote talks about the democratization of fuzzing at scale, highlighting the collaboration between open source communities, academia, and industry to advance the field of fuzzing. It delves into the history of fuzzing, the development of scalable fuzzing platforms, and the empowerment of community-driven research. The talk will further discuss recent advancements leveraging AI/ML and offer insights into the future evolution of the fuzzing landscape.
NO1 Uk best vashikaran specialist in delhi vashikaran baba near me online vas...Amil Baba Dawood bangali
Contact with Dawood Bhai Just call on +92322-6382012 and we'll help you. We'll solve all your problems within 12 to 24 hours and with 101% guarantee and with astrology systematic. If you want to take any personal or professional advice then also you can call us on +92322-6382012 , ONLINE LOVE PROBLEM & Other all types of Daily Life Problem's.Then CALL or WHATSAPP us on +92322-6382012 and Get all these problems solutions here by Amil Baba DAWOOD BANGALI
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Courier management system project report.pdfKamal Acharya
It is now-a-days very important for the people to send or receive articles like imported furniture, electronic items, gifts, business goods and the like. People depend vastly on different transport systems which mostly use the manual way of receiving and delivering the articles. There is no way to track the articles till they are received and there is no way to let the customer know what happened in transit, once he booked some articles. In such a situation, we need a system which completely computerizes the cargo activities including time to time tracking of the articles sent. This need is fulfilled by Courier Management System software which is online software for the cargo management people that enables them to receive the goods from a source and send them to a required destination and track their status from time to time.
Saudi Arabia stands as a titan in the global energy landscape, renowned for its abundant oil and gas resources. It's the largest exporter of petroleum and holds some of the world's most significant reserves. Let's delve into the top 10 oil and gas projects shaping Saudi Arabia's energy future in 2024.
TECHNICAL TRAINING MANUAL GENERAL FAMILIARIZATION COURSEDuvanRamosGarzon1
AIRCRAFT GENERAL
The Single Aisle is the most advanced family aircraft in service today, with fly-by-wire flight controls.
The A318, A319, A320 and A321 are twin-engine subsonic medium range aircraft.
The family offers a choice of engines
Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
About
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Technical Specifications
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
Key Features
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface
• Compatible with MAFI CCR system
• Copatiable with IDM8000 CCR
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
Application
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Sachpazis:Terzaghi Bearing Capacity Estimation in simple terms with Calculati...Dr.Costas Sachpazis
Terzaghi's soil bearing capacity theory, developed by Karl Terzaghi, is a fundamental principle in geotechnical engineering used to determine the bearing capacity of shallow foundations. This theory provides a method to calculate the ultimate bearing capacity of soil, which is the maximum load per unit area that the soil can support without undergoing shear failure. The Calculation HTML Code included.
Overview of the fundamental roles in Hydropower generation and the components involved in wider Electrical Engineering.
This paper presents the design and construction of hydroelectric dams from the hydrologist’s survey of the valley before construction, all aspects and involved disciplines, fluid dynamics, structural engineering, generation and mains frequency regulation to the very transmission of power through the network in the United Kingdom.
Author: Robbie Edward Sayers
Collaborators and co editors: Charlie Sims and Connor Healey.
(C) 2024 Robbie E. Sayers
Forklift Classes Overview by Intella PartsIntella Parts
Discover the different forklift classes and their specific applications. Learn how to choose the right forklift for your needs to ensure safety, efficiency, and compliance in your operations.
For more technical information, visit our website https://intellaparts.com
Event Management System Vb Net Project Report.pdfKamal Acharya
In present era, the scopes of information technology growing with a very fast .We do not see any are untouched from this industry. The scope of information technology has become wider includes: Business and industry. Household Business, Communication, Education, Entertainment, Science, Medicine, Engineering, Distance Learning, Weather Forecasting. Carrier Searching and so on.
My project named “Event Management System” is software that store and maintained all events coordinated in college. It also helpful to print related reports. My project will help to record the events coordinated by faculties with their Name, Event subject, date & details in an efficient & effective ways.
In my system we have to make a system by which a user can record all events coordinated by a particular faculty. In our proposed system some more featured are added which differs it from the existing system such as security.
Final project report on grocery store management system..pdfKamal Acharya
In today’s fast-changing business environment, it’s extremely important to be able to respond to client needs in the most effective and timely manner. If your customers wish to see your business online and have instant access to your products or services.
Online Grocery Store is an e-commerce website, which retails various grocery products. This project allows viewing various products available enables registered users to purchase desired products instantly using Paytm, UPI payment processor (Instant Pay) and also can place order by using Cash on Delivery (Pay Later) option. This project provides an easy access to Administrators and Managers to view orders placed using Pay Later and Instant Pay options.
In order to develop an e-commerce website, a number of Technologies must be studied and understood. These include multi-tiered architecture, server and client-side scripting techniques, implementation technologies, programming language (such as PHP, HTML, CSS, JavaScript) and MySQL relational databases. This is a project with the objective to develop a basic website where a consumer is provided with a shopping cart website and also to know about the technologies used to develop such a website.
This document will discuss each of the underlying technologies to create and implement an e- commerce website.
Final project report on grocery store management system..pdf
PERFORMANCE ENHANCEMENT OF HOUSEHOLD REFRIGERATOR BY USING TiO2 NANO LUBRICANT3ppt
1. PERFORMANCE ENHANCEMENT OF
HOUSEHOLD REFRIGERATOR BY USING
TiO2NANO LUBRICANT
1
Project Guide,
SAJU HANEEF
ASST. PROFESSOR
DEPT. OF ME
Presented by,
ABIN JOY
BABU GEORGE ABRAHAM
NIYAS P.P
2. CONTENTS
Introduction
Literature review
Objectives
Fabrication of experimental test rig.
Mixing of nano particle
Experimental procedure
Result and discussion
comparison
Conclusion
Scope for future work
References
3. INTRODUCTION
Refrigeration is the process of removal of heat from a body at
high temperature to low temperature with the help of a machine
called refrigerator
The heat transfer capacity of normal lubricant is not so good and
cause increased power consumption.
To overcome these limitation nano particles are used with the
normal lubricants.
The presence of nano particle helps reduce the friction coefficient
of the lubricants.
3
4. LITERATURE REVIEW
1.R. Saidur , S.N. Kazi (2011)
A review on the performance of nanoparticles suspended with refrigerants
and lubricating oils in refrigeration system
• Thermal-physical properties of nanoparticles suspended in refrigerant and
lubricating oil of refrigerating system were reviewed.
• The result indicates that the refrigerant HFC134a and mineral oil with TiO2
nano particle works normally and safely in the refrigerator with better
performance
4
5. 2. V.K, Sreejith K(2013)
Performance Evaluation of Household Refrigerator using CuO
Nanoparticle Lubricant Mixture and various Compressor Oils with
Different Condenser Modes
• CuO nanoparticle-lubricant mixture and different types of compressor
oil having both air-cooled and water-cooled condenser.
• Result shows that about 200 litres of hot water at a temperature of
about 58ºC over a day can be generated.
5
6. 3. Vaishali P. Mohod (2015)
A Review on Heat Transfer Enhancement Using Nanoparticles
Suspended With Refrigerants/Lubricating Oils in Refrigeration
Systems
• Performance of various systems using nanorefrigerant or
nanolubricant has been reviewed.
• It has been found that the heat transfer coefficient enhances and there
is considerable saving in power consumption
6
7. OBJECTIVES
• To fabricate R134a refrigerator test rig using 160L capacity, single
door refrigerator.
• To conduct refrigerator performance test by using PAG & sunizo 3GS
compressor oil and R134a refrigerant.
• To study the effect of TiO2 nano particle on the refrigerator
performance by using with PAG & sunizo 3GS compressor oil.
7
8. FABRICATION OF TEST RIG
Apparatus required
• Domestic refrigerator
• Pressure gauges
• Thermocouple
• Temperature indicator
• Energy meter
• Copper pipes
• Flaring nut
11. FABRICATION OF TEST RIG CONT..
Procedure
Installation of pressure gauges
Pressure gauges at
1. Low pressure side
2. High pressure side
A hole is drilled on the pipes at these points and one end of
copper pipes are welded there.
The pressure gauge are fitted to the other end of copper pipe by
flaring.
13. FABRICATION OF TEST RIG CONT..
Installation of thermocouple
Thermocouple at point between
1. Evaporator and compressor
2. Compressor and condenser
3. Condenser and expansion device
4. Expansion device and evaporator
5. Water tray in freezer
Thermocouple is couple is fixed on these position by welding
The other end of the thermocouple is connected to a temperature
indicator
14. FABRICATION OF TEST RIG CONT..
Installation of energy meter
It is used to measure the power consumption by the compressor.
Energy meter is connected in parallel to the compressor power supply.
Installation of water tray
An aluminium water tray of 5 ltr is kept inside the freezer (close to
evaporator as possible)
15. FABRICATION OF TEST RIG CONT..
Provision For Oil Drainage
In order to overcome the difficulty faced in an normal oil changing
procedure for a domestic refrigerator hermetic compressor we
provide a hole and cap mechanism.
The lubricating oil resides at the bottom of the chamber of
compressor.
A hole is drilled at the bottom of the chamber. Then a pipe with
internal thread is welded to the hole sealing around the perimeter.
The male part consist of a metallic plug with external thread and a
sealing of silicone rubber ring at the end
The plug can be opened for oil draining process.
16. Schematic of a hermetic sealed compressor
The oil lies around the bottom of the compressor chamber
18. LEAK TEST – REFRIGERATION TEST RIG
Procedure:-
• An air compressor is connected to the charging line and air is pumped
at around a considerable pressure.
• Both the pressure gauge show the same pressure. Then the pressure
gauge is observed for about 3Hrs.
• If the pressure holds after 3Hrs the system is proven leak proof.
20. CHARGING OF LUBRICANT OILAND REFIGERANT
Charging of lubricant oil:-
• The oil to be charged is measured and taken in beaker
• A suction pump connected to the charging line and turned on which
creates a vacuum inside the chamber. Then a pipe is connected to the
charging line. And the other end is dipped in to the oil.
• The suction caused by the vacuum inside the compressor sucks the oil
into the compressor.
Charging of R134:-
• A vacuum is created inside the compressor by removing all the air
inside it by using a suction pump.
• So a negative pressure is formed inside the system.
• The suction pump is replaced by R134 gas container. Which in turn
fills the R134 into the system.
22. MIXING OF NANO PARTICLE
It is important to obtain homogenous mixture of TiO2 nano
particle and lubricant.
An agitator is used to obtain a uniform mixture of 0.05 weight
percentage of of TiO2 Nano particle in compressor oil.
The weighing of TiO2 is done and added to the oil. Then mixing
is done.
23. Mixing procedure
Mixing is done in 2 stages.
1. Ultrasonic bath
The mixture is kept in the bath for 40 minutes
25. EXPERIMENTAL PROCEDURE
• Switch on the main power supply
• Initial water (load) temp is noted.
• The load is placed in the evaporator
• Suction pressure and discharge pressure are noted
• When temp of load reaches 100C, corresponding
thermocouple readings are noted using temp indicator.
• Time for 10 pulse of energy meter are noted at regular
interval of time
• Above steps are repeated for different compressor oils.
• The following equation where used to obtain the result.
26. • Theoretical COP is calculated using the equation,
COPth=
h1
−h4
h2
−h1
Ph diagram of vapour compression cycle
Where,
h1– enthalpy of refrigerant at the inlet of the compressor
h2–enthalpy of refrigerant at the outlet of the compressor
h4–enthalpy of refrigerant at the inlet of the evaporator
27. • Actual C.O.P can be calculated using relation,
COPact =
cooling load
power input
• Cooling load = mCpDT
Where m= mass of load in kg
Cp = Specific heat at constant pressure kJ/kgK
DT= Change in temperature in K
• Input power(kJ) =
𝑥
𝑡
*
3600
𝑁𝑒
*3600 x T
Where x = 10 pulses
t = time for 10 pulse of energy meter in
seconds
Ne = Energy meter constant = 3200 imp/kWh
T = Total time of running = 1 Hr
36. • By using pure SUNISO 3GS oil, the actual COP increases by 21%
and for nanolubricant there is 35% increase in COP.
• During the operation a part of the nano lubricant is also carried along
with the refrigerant
• This will increase the surface to volume ratio.
• Due to increase in surface area, the heat transfer coefficient of the
refrigerant increases.
• This will causes considerable increase in COP of the system
38. • The power consumption of compressor is reduced by 25.83% in nano
lubricant
• The presence of nanolubricants reduces the friction inside the
compressor and thereby reduces the power consumption
39. 1) PAG Oil
COPth = 1.78
COPact = 0.514
Input power =815.75 kJ
2) SUNISO 3 GS Oil
COPth = 2.825
COPact = 0.622
Input power = 675 kJ
% increase in actual COP with PAG oil = 21.01%
% reduction in input power with PAG oil =17.25%
3) SUNISO 3GS + TiO2 Nanoparticles
COPth = 3.3
COPact = 0.694
Input power = 648.83 kJ
% increase in actual COP with PAG oil = 35.02%
% reduction in input power with PAG oil =25.83%
SUMMARY OF RESULTS
40. • The R134a refrigerant and mineral oil mixed with TiO2 nanoparticles
worked normally and safely in the refrigerator.
• The effect of nano-lubricant increases the heat transfer rate by
increasing the surface area.
• The power consumption of the compressor can be reduced by using
nano lubricant
• From the study we can conclude that the already existing system can
be replaced with nanolubricant without compromising the
performance.
CONCLUSION
41. • Use of nanopaticles like Al2O3, CuO, Carbon nanotube etc may
increase the performance
• Study of nanoparticle with different grade and size can be conducted.
• Experiment with different condenser modes can be performed.
• The effect of different concentration of nanopatricles can be studied.
• Experiment with different combination of refrigerants and
nanoparticles can be conducted.
SCOPE FOR FUTURE WORK
42. REFERANCES
• . Bi S., Shi L. and Zhang L., 2008. Application of nanoparticles
in domestic refrigerators. Applied Thermal Engineering, Vol. 28,
pp.1834-1843.
• Shengshan Bi, Kai Guo, Zhigang Liu, Jiangtao Wu. Performance
of a domestic refrigerator using TiO2- R600a nano-refrigerant as
working fluid. Energy Conversion and Management 52 (2011) :
733–737
43. • Saidur, R, A Review on the performance of nano-particles
suspended with refrigerants and lubricating oils in refrigeration
system, Int J of Renewable and Sustainable Energy Reviews,
Vol. 15, 2011, 310-323.
• D. Sendil Kumar, Dr. R. Elansezhian .,( Sep.-Oct. 2012)
Experimental Study on Al2O3-R134a Nano Refrigerant in
Refrigeration System, International Journal of Modern
Engineering Research (IJMER) Vol. 2, Issue. 5, pp-3927- 3929