The document discusses heat pumps, which transfer heat from one place to another against a temperature gradient using external energy. It describes the typical components of a heat pump - evaporator, compressor, condenser, expansion valve - and how they work together in the heating and cooling cycles. Carbon dioxide is highlighted as a natural, non-toxic refrigerant with advantages over traditional refrigerants like Freon, though it requires higher operating pressures. The document concludes that heat pumps using carbon dioxide as the refrigerant can provide efficient and environmentally friendly heating and cooling.
Presentation on Heat pump and its Function.Monjur Ayon
The discussion are also include about heat pump with its different function,type of heat pump,working procedure,application of heat pump,main component of heat pump.
This minute lecture introduces heat pumps as a best practices for heating and cooling buildings. According to UIE, more widescale use of heat pumps could save 1,200 million tonne of greenhouse gas emissions per year on a global scale, and represents one of the largest potential savings that any single technology can offer.
Geothermal energy
Its a very vast growing energy sector in world many country and use this energy for their country
This slide shows how and where it done.
An Introduction to Air to water, Air Source, Heat Pump SystemsSpaceAir
Space Air is delighted to provide an overview of its latest RIBA accessed CPD seminar. Covering the basic principles and systems available. Developed by people with years
Presentation on Heat pump and its Function.Monjur Ayon
The discussion are also include about heat pump with its different function,type of heat pump,working procedure,application of heat pump,main component of heat pump.
This minute lecture introduces heat pumps as a best practices for heating and cooling buildings. According to UIE, more widescale use of heat pumps could save 1,200 million tonne of greenhouse gas emissions per year on a global scale, and represents one of the largest potential savings that any single technology can offer.
Geothermal energy
Its a very vast growing energy sector in world many country and use this energy for their country
This slide shows how and where it done.
An Introduction to Air to water, Air Source, Heat Pump SystemsSpaceAir
Space Air is delighted to provide an overview of its latest RIBA accessed CPD seminar. Covering the basic principles and systems available. Developed by people with years
A lot's of animation have been included in it which make this ppt more attractive as well audience better understand and key point of a good presentation is that if we are able to explain them in simpler way more people will going to like it so hope this ppt will really be helpfull
INTRODUCTION
THERMODYNAMIC CYCLE OF STEAM FLOW
RANKINE CYCLE (IDEAL , ACTUAL ,REHEAT)
LAYOUT OF STEAM POWER PLANT
MAJOR COMPONENTS AND THEIR FUNCTIONS
ALTERNATOR
EXCITATION SYSTEM
GOVERNING SYSTEM
This presentation introduces the principle of an air source heat pump, the key parts of the heat pump system and shows some examples of how heat pumps saves your money and protects the environment.
A lot's of animation have been included in it which make this ppt more attractive as well audience better understand and key point of a good presentation is that if we are able to explain them in simpler way more people will going to like it so hope this ppt will really be helpfull
INTRODUCTION
THERMODYNAMIC CYCLE OF STEAM FLOW
RANKINE CYCLE (IDEAL , ACTUAL ,REHEAT)
LAYOUT OF STEAM POWER PLANT
MAJOR COMPONENTS AND THEIR FUNCTIONS
ALTERNATOR
EXCITATION SYSTEM
GOVERNING SYSTEM
This presentation introduces the principle of an air source heat pump, the key parts of the heat pump system and shows some examples of how heat pumps saves your money and protects the environment.
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.
Vapor compression refrigeration cycle, Refrigerants,
Coefficient of performance, Capacity, Factors affecting Refrigeration and Air conditioning
system performance and savings opportunities.
Vapor absorption refrigeration system: Working principle, Types and comparison with
vapor compression system, Saving potential
ENERGY AUDIT presentationin power system .pptxReshevSharma
An energy audit is a systematic process of evaluating and analyzing energy usage in a building, facility, or industrial process to identify opportunities for energy efficiency improvements, cost savings, and environmental sustainability. The goal of an energy audit is to assess energy consumption patterns, identify areas of inefficiency or waste, and recommend measures to optimize energy usage and reduce overall energy consumption.
Here's an overview of the typical steps involved in conducting an energy audit:
1. **Pre-Audit Planning:**
Define the scope and objectives of the energy audit, including the areas or systems to be evaluated, the level of detail required, and the desired outcomes. Identify key stakeholders, establish audit goals, and gather relevant documentation, such as utility bills, building plans, and equipment specifications.
2. **Data Collection and Analysis:**
Collect comprehensive data on energy consumption, including utility bills, meter readings, and operational data
Different Types of heat pump water heaters, technological advancements and efficiency changes in each type with their advantages / disadvantages and future prospects.
task scheduling in cloud datacentre using genetic algorithmSwathi Rampur
Task scheduling and resource provisioning is the core and challenging issues in cloud environment. Processes running in the cloud environment will race for available resources in order to complete their tasks with the minimum execution time; it is clear that we need an efficient scheduling technique for mapping between processes running and available resources. In this research paper, we are presented a non-traditional optimization technique, which mimics the process of evolution and based on the mechanics of natural selection and natural genetics called Genetic algorithm (GA), which minimizes the execution time and in turn reduces computation cost. We had done comparison with Round Robin algorithm and used CloudSim toolkit for our tests, results shows that Meta heuristic GA gives better performance than other scheduling algorithm.
Attribute Based Encryption with Privacy Preserving In Clouds Swathi Rampur
This is a ppt made by shrihari ,in this encryption with privacy preserving in clouds is described!
It will be helpfull for those who are doing projects on cloud!
Immunizing Image Classifiers Against Localized Adversary Attacksgerogepatton
This paper addresses the vulnerability of deep learning models, particularly convolutional neural networks
(CNN)s, to adversarial attacks and presents a proactive training technique designed to counter them. We
introduce a novel volumization algorithm, which transforms 2D images into 3D volumetric representations.
When combined with 3D convolution and deep curriculum learning optimization (CLO), itsignificantly improves
the immunity of models against localized universal attacks by up to 40%. We evaluate our proposed approach
using contemporary CNN architectures and the modified Canadian Institute for Advanced Research (CIFAR-10
and CIFAR-100) and ImageNet Large Scale Visual Recognition Challenge (ILSVRC12) datasets, showcasing
accuracy improvements over previous techniques. The results indicate that the combination of the volumetric
input and curriculum learning holds significant promise for mitigating adversarial attacks without necessitating
adversary training.
CW RADAR, FMCW RADAR, FMCW ALTIMETER, AND THEIR PARAMETERSveerababupersonal22
It consists of cw radar and fmcw radar ,range measurement,if amplifier and fmcw altimeterThe CW radar operates using continuous wave transmission, while the FMCW radar employs frequency-modulated continuous wave technology. Range measurement is a crucial aspect of radar systems, providing information about the distance to a target. The IF amplifier plays a key role in signal processing, amplifying intermediate frequency signals for further analysis. The FMCW altimeter utilizes frequency-modulated continuous wave technology to accurately measure altitude above a reference point.
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.
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.
NUMERICAL SIMULATIONS OF HEAT AND MASS TRANSFER IN CONDENSING HEAT EXCHANGERS...ssuser7dcef0
Power plants release a large amount of water vapor into the
atmosphere through the stack. The flue gas can be a potential
source for obtaining much needed cooling water for a power
plant. If a power plant could recover and reuse a portion of this
moisture, it could reduce its total cooling water intake
requirement. One of the most practical way to recover water
from flue gas is to use a condensing heat exchanger. The power
plant could also recover latent heat due to condensation as well
as sensible heat due to lowering the flue gas exit temperature.
Additionally, harmful acids released from the stack can be
reduced in a condensing heat exchanger by acid condensation. reduced in a condensing heat exchanger by acid condensation.
Condensation of vapors in flue gas is a complicated
phenomenon since heat and mass transfer of water vapor and
various acids simultaneously occur in the presence of noncondensable
gases such as nitrogen and oxygen. Design of a
condenser depends on the knowledge and understanding of the
heat and mass transfer processes. A computer program for
numerical simulations of water (H2O) and sulfuric acid (H2SO4)
condensation in a flue gas condensing heat exchanger was
developed using MATLAB. Governing equations based on
mass and energy balances for the system were derived to
predict variables such as flue gas exit temperature, cooling
water outlet temperature, mole fraction and condensation rates
of water and sulfuric acid vapors. The equations were solved
using an iterative solution technique with calculations of heat
and mass transfer coefficients and physical properties.
Industrial Training at Shahjalal Fertilizer Company Limited (SFCL)MdTanvirMahtab2
This presentation is about the working procedure of Shahjalal Fertilizer Company Limited (SFCL). A Govt. owned Company of Bangladesh Chemical Industries Corporation under Ministry of Industries.
2. Introduction to Heat pump
Parts of a Heat pump
Working of Heat pump
Thermodynamics Process
Terms associated with Heat pump
Application of Heat pump
Types of Refrigerant
Why CO2 ?
Properties of CO2 as a Refrigerant
Advantages of heat pumps with CO2 refrigerant
Conclusion
OVERVIEW
3. A heat pump is a device that transfers heat energy
from a heat source to a heat sink against a temperature
gradient.
Heat pumps are designed to move thermal
energy opposite the direction of spontaneous heat flow.
A heat pump uses some amount of external high-grade
energy to accomplish the desired transfer of thermal
energy from heat source to heat sink.
5. The Refrigerant is the
liquid/gaseous substance that
circulates through the heat pump
alternately absorbing transporting
and releasing heat.
The Reversing valve controls
the direction of flow of the
refrigerant in the heat pump and
changes the heat pump from
heating to cooling mode or vice
versa.
6. The Evaporator is a coil
in which the refrigerant
absorbs heat from its
surroundings and boils to
become a low-temperature
vapour.
7. The compressor
squeezes the molecules
of the refrigerant gas
together increasing the
temperature of the
refrigerant.
8. The Condenser is a coil
in which the refrigerant
gives off heat to its
surroundings and becomes
a liquid.
9. The Expansion valve
lowers the pressure created
by the compressor. This
causes the temperature to
drop, and the refrigerant
becomes a low-temperature.
11. During the heating cycle, heat is taken from outdoor
air and "pumped" indoors.
The liquid refrigerant passes through the expansion
device, changing to a low-pressure liquid/vapour
mixture.
This vapour passes through the reversing valve to the
accumulator, which collects any remaining liquid before
the vapour enters the compressor.
The reversing valve sends the gas, which is now hot,
to the indoor coil, which is the condenser.
Below this outdoor ambient temperature, the heat
pump can supply only part of the heat required to keep
the living space comfortable, and supplementary heat is
required.
12.
13. The cycle described above is reversed to cool the house
during the summer.
The unit takes heat out of the indoor air and rejects it
outside. As in the heating cycle,
The liquid refrigerant absorbs heat from the indoor air and
boils,.
This vapour passes through the reversing valve to the
accumulator, which collects any remaining liquid, and then to
the compressor..
The heat from the hot gas is transferred to the outdoor air,
causing the refrigerant to condense into a liquid.
This liquid returns to the expansion device, and the cycle is
repeated.
The heat pump also dehumidifies the indoor air
14.
15. If the outdoor temperature falls to near or
below freezing when the heat pump is
operating in the heating mode, moisture in
the air passing over the outside coil will con
dense and freeze on it.
This frost build up decreases the
efficiency of the coil by reducing its ability
to transfer heat to the refrigerant
While heat pump is cooling the air in the
ductwork. The heating system would
normally warm this air as it is distributed
throughout the house.
16. Reversed Carnot cycle
Reversed Carnot cycle is an ideal refrigeration cycle
for constant temperature external heat source and
heat sinks.
V
17. Reverse Brayton cycle
This is an important cycle frequently employed in gas cycle
refrigeration systems. This may be thought of as a modification of
reversed Carnot cycle, as the two isothermal processes of Carnot
cycle are replaced by two isobaric heat transfer processes.
18. Coefficient of performance (COP):
It is the ratio of heat removed from the substance
to the work supplied
�
�COP=
It is a measure of a heat pump’s efficiency
The Higher the COP, the more efficient the heat
pump works
19. Btu/h (British thermal unit per hour) : is a
measure of the output of a heating or cooling
system, in one hour
Ton: is a measure of heat pump capacity
equivalent to 3.5 kW or 12000 Btu/h
Balance point : is the temperature at which the
amount of heating provided by the heat pump
equals the amount of heat lost from the house
20. HEATING OF INTERIOR ENVIRONMENTS
Heat pumps may be used also solely for heating the
internal environment.
Space heating
Sanitary water heating
Process heating
Dehumidification
Heat recovery
21. COOLING OF INTERIOR ENVIRONMENTS
Heat pumps are mainly used for cooling the internal
environment as an alternative source over
conventional system
Air-conditions
Cold storage
Industrial use
23. Carbon dioxide is very abundant in the environment.
It is a natural refrigerant known and used in the
past.
Carbon dioxide has an ozone depletion potential (ODP)
of zero .
It has a low replacement cost.
In addition to its basic environmental properties, carbon
dioxide is non- toxic. It carries an A1 safety classification
(the same as most fluorocarbon refrigerants), indicating
that it has low toxicity and is non-flammable
24. It is an inert product, compatible with all common materials
encountered in a refrigerating circuit, both metals and plastics
or elastomers.
the density of carbon dioxide is around 1.98 kg/m3
, about
1.67 times that of air.
high working pressures
At low concentrations, the gas is odourless
high discharge temperature
NBP of CO2 is 195.4K
25. No Fumes, odours and smoke
Energy efficient
The other challenge is that CO2 refrigerant
cycles operate at far higher pressure than
standard vapour-compression-cycle equipment
A new generation of CO2 based heat pumps
could avoid the high global warming potential
much higher temperatures
26. The natural fluid Carbon Dioxide displays some excellent properties in the use as a
refrigerant in compression-type refrigerating or heat pump systems: it offers unequalled
local and ecological safety, widespread availability at low cost, with no need for
recycling and containment.
Because of its low critical temperature (around 31 °C), CO2 does not compare
favourably against traditional refrigerants, as far as energy efficiency is
concerned, when simple theoretical cycle analyses are carried out.
But this situation can be mitigated, and in some cases completely reversed, by proper
design of the system aimed at fully exploiting the unique characteristics of CO2 and/or
the exclusive features of transcritical cycles, which bring about important factors that
improve the practical performance of CO2 systems.
A widespread research activity is underway world-wide for the application of CO2 in
many areas with promising results, including mobile and residential air conditioning,
heat pumps, and water chillers, commercial and marine applications).