Utilization of heat waste energy generated from air compressors as boiler feedwater preheating, a case study in smelter plant Sorowako

2019 ◽  
Author(s):  
Baso Murdin ◽  
Totok Soehartanto
Keyword(s):  
Waste Energy ◽  
Air Compressors ◽  
Boiler Feedwater

Energy Consumption Pattern of Residential Buildings: Case Study of Residential Area in Batu Pahat, Johor

2020 ◽  
Vol 12 (9) ◽  
Author(s):  
Junaidah Jailani ◽  
◽  
Norsyalifa Mohamad ◽  
Muhammad Amirul Omar ◽  
Hauashdh Ali ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Residential Buildings ◽  
Residential Area ◽  
Consumption Pattern ◽  
Air Conditioners ◽  
Residential Sector ◽  
Waste Energy ◽  
Main Factor ◽  
Energy Consumption Pattern

According to the National Energy Balance report released by the Energy Commission of Malaysia in 2016, the residential sector uses 21.6% of the total energy in Malaysia. Residents waste energy through inefficient energy consumption and a lack of awareness. Building occupants are considered the main factor that influences energy consumption in buildings, and to change energy consumption on an overall scale, it is crucial to change individual behaviour. Therefore, this study focused on analysing the energy consumption pattern and the behaviour of consumers towards energy consumption in their homes in the residential area of Batu Pahat, Johor. A self-administrated questionnaire approach was employed in this study. The findings of this study showed that the excessive use of air conditioners was a significant factor in the increasing electricity bills of homeowners as well as the inefficient use of electrical appliances. Also, this study determined the effect of awareness on consumer behaviour. This study recommends ways to help minimise energy consumption in the residential area.

scholarly journals A Framework for Assessing Commitment Indicators in Sustainable Development Decisions

2021 ◽  
Vol 13 (9) ◽  
pp. 5234
Author(s):  
Mustafa S. Al-Tekreeti ◽  
Salwa M. Beheiry ◽  
Vian Ahmed
Keyword(s):  
Sustainable Development ◽  
Performance Indicators ◽  
Energy Use ◽  
Capital Projects ◽  
The Sustainable Development ◽  
Corporate Leaders ◽  
Corporate Decisions ◽  
Waste Energy ◽  
Infrastructure Project

Numerous decision support systems have been developed to address the decision-making process in organizations. However, there are no developed mechanisms to track commitment down the line to the decisions made by corporate leaders. This paper is a portion of a study that establishes a framework for a comprehensive metric system to assess commitment to Sustainable Development (SD) decisions down the line in capital projects, and sets the groundwork for further development of performance indicators for SD outcomes. This ultimately leads to investigating the relationship between commitment to corporate decisions and better project performance in SD parameters. Hence, this study explores the literature to extract relevant parameters that reflect the degree of the project participants’ commitment to SD decisions and to develop commitment indicators. The study created then validated an index to track this commitment along the project stages: the Sustainable Development Commitment Tracking Tool (SDCTT). The SDCTT was tested on an infrastructure project case study. In this paper, techniques relevant to the first stage of projects (planning and definition) are presented. The SDCTT is the groundwork for the future development of performance indicators for SD outcomes, and within the postulated model should ultimately contribute towards reducing project waste, energy use, and carbon emissions.

Addressing ecology and sustainability in mega-sporting events: The 2006 football World Cup in Germany

2010 ◽  
Vol 16 (4) ◽  
pp. 587-600 ◽  
Author(s):  
Harald Dolles ◽  
Sten Söderman
Keyword(s):  
Point Of View ◽  
Sporting Events ◽  
World Cup ◽  
Sporting Event ◽  
History Of ◽  
Waste Energy ◽  
First Time ◽  
Water Waste

AbstractFor the first time in the history of FIFA (Fédération Internationale de Football Association), the football (soccer) World Cup held in Germany 2006 specifically addressed environmental concerns. By doing so, the German Organizing Committee did not have the objective of creating a short-term vision, but rather of making a long-term and lasting contribution to the improvement of environmental protection in hosting a mega-sporting event. By taking the football world cup in Germany as a case study, we will provide insights into the so-called ‘Green Goal’ programme and its four main areas: water, waste, energy, and transportation. From a global point of view, climate protection was added by the Organizing Committee as the fifth area of action and was recognised as a cross-sectorial task. Finally, questions are addressed on how to apply those measurements in the planning and organisation of other mega (-sporting) events.

The Green Technology Practices and Investments of Sipalay City Beach-Resorts

2020 ◽  
Vol 11 (7) ◽  
pp. 1708
Author(s):  
Marjon C. MALACAPAY ◽  
Reynaldo TABABA
Keyword(s):  
Qualitative Data ◽  
Study Data ◽  
Green Technology ◽  
Solar Panels ◽  
Water Control ◽  
Methodological Triangulation ◽  
Waste Energy ◽  
Multiple Case ◽  
Case Study Data

The study of exploring the green technology practices and investments of beach-resorts in Sipalay City, Negros Occidental, Philippines, was realized in support of the worldwide call of promoting responsible and sustainable ecotourism sites. It discloses how these six resorts use green products in their operations, manage their waste, energy, and water resources, uncover practices that need improvement, including its primary causes, and evaluate their green technology investments' progress. This study is qualitative and designed as a multiple case study. Data were collected and validated through methodological triangulation (interview, document analysis, and on-site validation) and analyzed using Qualitative Data Analysis (QDA). Thus, notable findings include the resorts' use of stainless in replacement to plastic straws, glasses instead of disposable cups, and paper instead of Styrofoam boxes. Hence, the absence of compost pitting, the lack of a water control system, and the undersupply of solar panels are a few of the resorts' drawbacks. Therefore, this study discerns that the disproportion between capital and return of investments and the guests' lodging behavior influences the resorts' green technology practices and investments.

A Case Study on Generation of Acceptance Criteria in Feedwater Supply Tube Bends

2010 ◽  
Author(s):  
Daniel T. Peters ◽  
Eric Jones
Keyword(s):  
Phased Array ◽  
Acceptance Criteria ◽  
Examination Methods ◽  
Examination Techniques ◽  
Ultrasonic Techniques ◽  
Power Boiler ◽  
Boiler Feedwater ◽  
Supply Tube

Inspection of components utilizing advanced examination techniques is becoming standard practice in the power industry. One of the critical aspects during this type of inspection is to have on hand criteria for acceptance or rejection of flaws found during these inspections. The examinations typically include the use of advanced ultrasonic techniques such as Linear Phased Array (LPA), Focused Annular Phased Array (APA), and Time of Flight Diffraction. These techniques can detect and size flaws that are often “Fit for Service” for at least one additional outage cycle. However, schedule limitations during an outage often do not permit for extensive analysis time. Repair decisions need to be made immediately and having criteria available for these decisions are critical. The following is a case study for the generation of acceptance / rejection criteria for power boiler feedwater supply tube bends. The determination of “allowable flaw sizes” is needed to determine which of these supply tube bends need to be removed during the outage. The acceptance criteria in this work is based on the criteria of API 579-1 / ASME FFS-1 “Fitness for Service Standard” [1] to evaluate the rate of growth of the flaws found. Discussion is also made as to the sensitivity of the examination methods used to detect the flaws expected and how this relates to the acceptance criteria generated.

RECIPROCATING AND SCREW AIR COMPRESSORS: A CASE STUDY

2019 ◽  
Author(s):  
Pedro Figueiredo ◽  
Christian Moura ◽  
Rodrigo Ribera
Keyword(s):  
Air Compressors

Addressing ecology and sustainability in mega-sporting events: The 2006 football World Cup in Germany

2010 ◽  
Vol 16 (4) ◽  
pp. 587-600 ◽  
Author(s):  
Harald Dolles ◽  
Sten Söderman
Keyword(s):  
Point Of View ◽  
Sporting Events ◽  
World Cup ◽  
Sporting Event ◽  
History Of ◽  
Waste Energy ◽  
First Time ◽  
Water Waste

AbstractFor the first time in the history of FIFA (Fédération Internationale de Football Association), the football (soccer) World Cup held in Germany 2006 specifically addressed environmental concerns. By doing so, the German Organizing Committee did not have the objective of creating a short-term vision, but rather of making a long-term and lasting contribution to the improvement of environmental protection in hosting a mega-sporting event. By taking the football world cup in Germany as a case study, we will provide insights into the so-called ‘Green Goal’ programme and its four main areas: water, waste, energy, and transportation. From a global point of view, climate protection was added by the Organizing Committee as the fifth area of action and was recognised as a cross-sectorial task. Finally, questions are addressed on how to apply those measurements in the planning and organisation of other mega (-sporting) events.

scholarly journals Energy, Exergy, and Emission Analysis on Industrial Air Compressors

2021 ◽  
pp. 1-34
Author(s):  
Farah Nazifa Nourin ◽  
Juan Espindola ◽  
Osama M. Selim ◽  
Ryoichi S. Amano
Keyword(s):  
Exergy Analysis ◽  
Cost Savings ◽  
High Energy ◽  
Emission Analysis ◽  
Industrial Plants ◽  
Energy And Exergy ◽  
Energy And Exergy Analysis ◽  
Overall Performance ◽  
Air Compressors

Abstract Air compressors, a key fluid power technology, play an important role not only in industrial plants but also in office buildings, hospitals, and other types of facilities. The efficient use of the air compressor is crucial to control unnecessary inefficiencies that cause high energy consumption. This study aims to provide energy and exergy analysis on air compressors for different industries. Detailed case studies are also analyzed. The case study focuses on the energy and exergy analysis of the compressed air system of foundry industries. The results indicate that applying the six improvement recommendations yield significant amounts of energy and cost savings as well as significant improvements in the overall performance of the system. The payback periods for different recommendations are economically feasible and worthwhile to use. The suggested improvement methods can provide high costs with a low payback period.

Case Study: Solving Vibration Problems in High Speed Boiler Feedwater Pumps Using Experimental and Analytical Techniques

2002 ◽  
Author(s):  
William C. Livoti ◽  
James Steiger
Keyword(s):  
High Speed ◽  
Analytical Techniques ◽  
Operating Life ◽  
Running Speed ◽  
Design Changes ◽  
Short Run ◽  
Vibration Problems ◽  
Rotor Dynamic ◽  
Boiler Feedwater

Entergy’s Willow Glen Unit 4 main boiler feed pumps experienced high vibration levels and short run times since installation in the 1970’s. The two 14,000 horsepower units have been rebuilt many times, with operating life averaging 18 months before vibration levels became excessive. To operate the unit until the next outage, operators had to reduce the running speed of the turbine drivers to control pump vibration and generate less electricity. Vibration and modal analysis testing coupled with lateral rotor dynamic computer models indicated that changing the stiffness of the bearing housing supports and rotor could significantly improve the pump. It was decided to proceed with design changes and as an interim solution fit the pumps with dynamic absorbers to reduce bearing housing vibrations. After the design changes were incorporated the pump operates with vibration levels in the .15 ip/s range.

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