International Journal of Engineering Research and General Science

6-10

Authors: Thamer A N. Alenezi

This paper has been prepared to develop a better understanding of when the target value design (TVD) can be used in lean design management in Kuwait during covid-19. A survey questionnaire was used to collect data from a wide range of professional engineering consulting practitioners operating in Kuwait. The finding from this research were develop a better understanding of lean design management lifecycle, and the main conclusions from output of the data helped in developing a better understanding of when the TVD can be used in lean design management in Kuwait during Covid-19. Keywords:- Target value design, Lean design management, Kuwait, Covid-19, Survey questionnaire,

6-11

Authors: Thamer A N. Alenezi

This paper has been prepared to explore the lean design management in Kuwait during Covid-19. A questionnaire survey has been carried out from a wide range of professional engineering consulting practitioners operating in Kuwait. The findings from this research explored the principles, techniques and tools of lean design management in Kuwait during Covid-19. The main conclusion drawn is that the TVD technique were always used in lean design management in Kuwait during Covid-19.

6-12

Authors: R. Sany, K. Ahnaf, and A. Rashid

Since a vast segment of population presently using bicycles and having huge penetration of mobile phones, it is an opportunity to harness these two phenomenon for sustainable progress. In this research, a sustainable mobile charging device was developed. Furthermore, an economic analysis was conducted to project its viability in monetary terms. In this regard, SWOT analysis, PEST analysis, break-even point, etc. were carried out. The analysis shows a significant saving and therefore implies a good prospect for commercial production by the relevant industry and government alike. Keywords— Mobile Charger, Renewable Energy, Techno-economic Analysis, Environmental Impact, Energy Saving, Product Design, Sustainability

6-8

Authors: Thamer A N. Alenezi

This paper has been prepared to explore the necessary planning to minimise delay factors on construction projects in Kuwait during Covid-19. The data was obtained through face-to-face interviews. A case study was performed at West of Abdullah Al Mubarak in Kuwait, identifying the major causes of delay on the project. The delay factors of the project were gathered from the project manager and the study found the main delay factor was addressed and minimised by proper planning methods.

6-9

Authors: Thamer A N. Alenezi

This paper has been prepared to evaluate the impact of Covid-19 on Construction projects in Kuwait. A questionnaire survey has been carried out from a wide range of professional engineering, construction and architecture practitioners operating in Kuwait. The findings from this research revealed that delays in projects were due to Covid-19. The main conclusion drawn is that the delays can be reduced by proper planning.

15-21

Authors: Vinay Kumar1, PP Paroha, D Swain, Virendra Kumar

A modern sugar industry has around 80 to 90 Variable Frequency Drives (VFDs) beside an additional 300 electrical motors that run on different types of starters. Among these VFDs, the majority of the load is on sugarcane milling station. The mills, of 4 or 5 sets in tandem, consumes around 25-30% of total electrical power consumed by the industry. The front-end rectifiers in the electrical drives of these mills rollers are a major source of harmonics and thereby polluting power. In most of the places, two delta/delta-wye type converter transformers are used to feed motors of four mills through VFDs. By this, two individual 6-pulse rectifiers act as 12-pulse rectifier resulting in canceling of the 5th and 7th ordered harmonics and bringing the Total Harmonic Distortion (THD) down to around 10%. In some of the cases, if the motor rating is rather lower, then the drives are fed directly from the bus. This results in injecting harmonics of even the dominating 5th and 7th order harmonics resulting in much more THD than in the case of two converter transformer. The very application of sugarcane milling tandem can further be improved and a 24-pulse for 4 sets or 30-pulse for 5 sets in the tandem can be realized. This paper presents a simulation study on harmonics due to front-end rectifiers in the electrical drives of existing set up for sugarcane milling station. The simulation is carried out on MATLAB/Simulink. Keywords— VFD, DC Drive, Milling tandem, harmonics, THD, Converter Transformer, MATLAB/Simulink. A modern sugar industry has around 80 to 90 Variable Frequency Drives (VFDs) beside an additional 300 electrical motors that run on different types of starters. Among these VFDs, the majority of the load is on sugarcane milling station. The mills, of 4 or 5 sets in tandem, consumes around 25-30% of total electrical power consumed by the industry. The front-end rectifiers in the electrical drives of these mills rollers are a major source of harmonics and thereby polluting power. In most of the places, two delta/delta-wye type converter transformers are used to feed motors of four mills through VFDs. By this, two individual 6-pulse rectifiers act as 12-pulse rectifier resulting in canceling of the 5th and 7th ordered harmonics and bringing the Total Harmonic Distortion (THD) down to around 10%. In some of the cases, if the motor rating is rather lower, then the drives are fed directly from the bus. This results in injecting harmonics of even the dominating 5th and 7th order harmonics resulting in much more THD than in the case of two converter transformer. The very application of sugarcane milling tandem can further be improved and a 24-pulse for 4 sets or 30-pulse for 5 sets in the tandem can be realized. This paper presents a simulation study on harmonics due to front-end rectifiers in the electrical drives of existing set up for sugarcane milling station. The simulation is carried out on MATLAB/Simulink.

35-39

Authors: Thamer A N. Alenezi

This paper has been prepared to identify the major causes of delays on construction projects in Kuwait during Covid-19. The major causes of delays from this research study were investigated following data collection carried out through a questionnaire survey with a wide range of construction professionals based in Kuwait. The findings from this research determined the major causes of delays based on an importance index, and the main conclusions from output of the data could help the construction sector to better assess not only the major causes of delays on construction projects but also how to minimise them by proper planning.