scholarly journals Design and Cost Optimization of Heat Exchangers Network System in a Typical Brewery Plant

2020 ◽  
Vol 5 (3) ◽  
pp. 245-251
Author(s):  
Shadrack Uzoma Mathew ◽  
Tamzor Lebari Aban
Keyword(s):  
Heat Exchangers ◽  
Oil And Gas ◽  
Cost Optimization ◽  
Production Capacity ◽  
Network System ◽  
Heat Exchanger Design ◽  
Port Harcourt ◽  
Pinch Technology ◽  
Gross Energy ◽  
Rivers State

Heat exchanger design and cost optimization had been carried out for Pabod Brewery, Port Harcourt, Rivers State, Nigeria using Pinch Technology as process application method. The gross energy expenditure by the plant is 10.44MW at production capacity of 400,000 liters of beer per day. On quantitative aggregate 6.157MW goes for heating and 4.267MW for cooling. A temperature pinch or minimum approach temperature (ΔTmin) of 100C, minimum heating utility of 5.04MW and cooling utility of 3.09MW were recorded. Energy upturn of 1.08MW and 1.23MW for the hot and cold flows were measured. This finding correlates to energy conservationS of 18% for hot utility and 21% for the cold utility. Overall improvement in capital and annualized costs of 39% was achieved for the hot and cold utilities. The researchers strongly recommend the outcome of this research to process applications in brewery, chemical, petrochemical, oil and gas industries.

scholarly journals Heat Exchanger Process Optimization in A Typical Brewery Plant

2020 ◽  
Vol 5 (1) ◽  
pp. 76-81
Author(s):  
Shadrack Uzoma Mathew ◽  
Lebari Aban Tamzor
Keyword(s):  
Heat Exchanger ◽  
Heat Exchangers ◽  
Waste Heat ◽  
Production Capacity ◽  
Network System ◽  
Heat Exchanger Network ◽  
Heat System ◽  
Pinch Technology ◽  
Cold Stream ◽  
Gross Energy

The research attempts to improve upon the performance efficiency of the heat exchanger network system of Pabod Brewery, Port Harcourt, Rivers State, Nigeria. It swaps the heat system of the plant by the use of Pinch Technology to recover waste heat and integrating the recovered energy for process application. The application software is Microsoft Excel and Problem Table Method was employed in the numerical analysis of data. The gross energy expenditure by the plant is 10.44MW at production capacity of 400,000 liters of beer per day. On quantitative aggregate 6.157MW goes for heating and 4.267MW for cooling. A temperature pinch or minimum approach temperature (ΔTmin)of 100C was used in the pinch analysis of the heat exchangers performance. The research findings confirmed minimum heating utility of 5.04MW and cooling utility of 3.09MW. with energy upturn of 1.08MW and 1.23MW for the hot and cold flows respectively. This correlates to energy conservation of 18% for hot utility and 21% for the cold utility. The hot stream pinch temperature is 710C while that of the cold stream is 610C. Heat exchangers network configuration design were performed above and below the pinch The network designs were produced and integrated to produce improved heat exchanger network system for the Brewery plant.

scholarly journals Assessment of Some Haematological, Coagulation and Immune Parameters among Male Oil Refinery Workers in Port Harcourt, Nigeria

2021 ◽  
pp. 32-41
Author(s):  
Ehiaghe-Shepherd, Bridget Obofoni ◽  
Christian, Serekara Gideon ◽  
Eze, Evelyn Mgbeoma
Keyword(s):  
Platelet Count ◽  
Cell Count ◽  
Prothrombin Time ◽  
Oil And Gas ◽  
Oil Refinery ◽  
Control Subjects ◽  
Immune Parameters ◽  
Port Harcourt ◽  
Significant Difference ◽  
Rivers State

Aim: The aim of this study was to assess the levels of some hematological, coagulation and immune parameters among male oil refinery workers in Port Harcourt, Nigeria. Study Design: This study is a cross-sectional study. Place and Duration of Study: Rivers State University Teaching Hospital (RSUTH), Port Harcourt, Shell Petroleum Development Company of Nigeria Limited and Modular Oil Refinery, Rivers State, between January 2021 and September 2021. Methodology: A total of one hundred (100) subjects (50 oil and gas workers as test subjects and 50 non-oil and gas workers as control subjects), were enrolled in the study. The convenient sampling technique was employed in the study. Venous blood samples were collected from all subjects and tested for Prothrombin Time (PT), Activated Partial Thromboplastin Time (APTT), Fibrinogen concentration, Full Blood Count (FBC) (Haemoglobin (Hb), Packed Cell Volume (PCV), Total White Blood Cell (WBC) count, Lymphocyte, Neutrophils, monocytes and Platelet Count), CD4 cell count, CD3 cell count and CD8 cell count. Data generated were analyzed statistically using Graph-Pad Prism, Version 8.0.2. Results: There was statistically significant decrease (P<.001) in Prothrombin time (PT) (11.55±0.73s), International Normalized Ratio (INR) (0.85±0.05), Fibrinogen (202.4±27.4mg/dl), Platelet count (185.6±37.1(103/μl)) and Neutrophils (46.6±6.4%) in oil refinery workers exposed to gas flare, while there was a statistical significant increase in APTT (31.8±4.15s), Hb (13.7±1.0g/dl), PCV (41.1±3.2%), Monocytes (8.4±3.0%) in subjects exposed to gas flare over control subjects with Prothrombin time(12.23±0.82s), INR(0.90±0.06), Fibrinogen(252.0±57.0mg/dl), platelet count(213.3±49.5(103/μl)) and Neutrophils(52.6±11.7%). Other parameters showed no statistical significant difference at P<.05 in both test and control subjects. Comparison of the mean ± standard deviation of the studied parameters in test subjects based on age using Analysis of Variance showed no statistically significant difference in all parameters at P<.05. Also, Comparison of the mean ± standard deviation of the studied parameters in test subjects based on duration of Exposure using Analysis of Variance showed a significant decrease in CD8 cells as the years of exposure increase (2-5years exposure = 865±319, 6-10years exposure = 579±288, 11-20 years exposure = 591± 286, F- Value = 3.869, P- Value = 0.0278). Conclusion: In conclusion, based on the findings, some haematogical, coagulation and immune parameters increased while others decreased in male oil refinery workers and duration of exposure can also be considered as a risk factor and age was considered not a risk factor as to cause any aberrations in the studied parameters.

“PIRAMIDA TINGGI, A State of the Art to Fulfill Obligation of Forestry Permit on Watershed Rehabilitation at PT Pertamina Hulu Mahakam”

2020 ◽  
Author(s):  
P. Sarwanto
Keyword(s):  
Land Tenure ◽  
Management System ◽  
Web Application ◽  
Local Community ◽  
Oil And Gas ◽  
Cost Optimization ◽  
Field Work ◽  
Development Goals ◽  
Potential Risks ◽  
Oil And Gas Sector

Among other obligations imposed under the forestry permit, watershed rehabilitation planting is perceived by the upstream oil and gas sector as the most complex challenge to conquer. Despite its poor track in fulfilling timeline and required result, there are also other challenges to consider, for instance lack of critical location, weather, fire, land tenure, community habit and capability, and cost optimization. In attempt to respond these challenges, an innovation in management system is constructed at PT Pertamina Hulu Mahakam, embracing and tailoring all related challenges, difficulties, and complexities, escalating the activity to be beyond compliance. So that it will be able to deliver more than merely avoid the identified potential risks towards company. The management system, called PIRAMIDA TINGGI (Pemberdayaan Masyarakat untuk Melestarikan Hutan di Dunia demi Ketahanan Energi Nasional), actively involves government, community, and business sector as equilateral triangle that work together to perform watershed rehabilitation planting. Developed using ISO 9001:2015 process approach namely PDCA (Plan-Do-Check-Act), the PIRAMIDA TINGGI system is in line as well with NAWACITA (President Joko Widodo’s vision, mission and program). To encounter other issue found during field work, this system is equipped as well with another innovation tool named PARIDA, a geospatial mobile-desk top-web application that easily able to map and identify vegetation in real time for further geo-analyzing multi-purposes, to be operated by local community. Full set implementation of this system has benefitted all parties. To Company in form of significant cost efficiency around 13.9 MUSD and 7 days’ faster result delivery besides obligation fulfillment, for others in form of broader advantage of proven sustainability project that has gave contribution to 5P (People, Planet, Prosperity, Partnership and Peace), objectives required by UN Sustainable Development Goals 2030.

Effective service delivery through quality management system (QMS) in oil and gas servicing companies, a case study of selected firms, Port Harcourt

2019 ◽  
Author(s):  
Chem Int
Keyword(s):  
Quality Management ◽  
Service Delivery ◽  
Management System ◽  
Oil And Gas ◽  
Quality Management System ◽  
Local Content ◽  
Port Harcourt ◽  
Test Of Hypotheses ◽  
The Impact ◽  
Effective Service

This study investigated the impact of Quality Management System (QMS) on effective service delivery in Oil and Gas Servicing Companies in selected firms in Port Harcourt, Nigeria. The opinion of 50 respondents were sampled using questionnaires, interviews as well as observation from journals and texts used in this work to examine the Quality Management System (QMS) of the selected firms. Using simple percentages and the Chi-square (X2) test of hypotheses, it was hypothetically established that the implementation of QMS practices, has impacted the work process, procedure and improvement on quality over the years in the Oil and Gas Servicing companies in Port Harcourt Nigeria. The research identified an adopted use of Failure Mode and Effect Analysis (FMEA) tool as a continual quality improvement initiative developed in the local content oil and gas servicing operation for equipment handling, management and to drive sustained improved performance quality processes as a key driver of a progressive that will place local content companies as an options for producing companies and at par with multinational oil and gas companies.

Some Physicochemical Parameters of Wastewater from an Oil Industry at Point of Discharge in Port Harcourt, Rivers State, Nigeria

2020 ◽  
Vol 6 (2) ◽  
pp. 23-28
Author(s):  
O. A. F Wokoma ◽  
◽  
O. S Edori ◽  
Keyword(s):  
Physicochemical Parameters ◽  
Oxygen Demand ◽  
Aquatic Organisms ◽  
Oil Industry ◽  
World Health ◽  
Port Harcourt ◽  
Water Association ◽  
Wastewater Samples ◽  
Health Organization ◽  
Rivers State

Wastewater samples were collected from an oil industry at the point of discharge for a period of two years, from January 2018 – December 2019. The wastewater samples were analyzed for different physicochemical parameters such as temperature, turbidity, total dissolved solids (TDS), total suspended solids (TSS), conductivity, pH, alkalinity, salinity, total hydrocarbon content (THC), biochemical oxygen demand (BOD) and chemical oxygen demand (COD) to examine their conformity to fulfill requirements as recommended by World Health Organization (WHO), Federal Ministry of Environment (FME) and Drinking Water Association (DWA). The results indicated that all the parameters in the discharged wastewater were within acceptable limits of the regulatory bodies. The field data showed that the investigated firm conformed to the law by carrying out proper procedures before discharging the effluents into the public drain and river. Therefore, the release of wastewater from the industry doesn't constitute a danger to the environment as well as aquatic organisms. Keywords: Physicochemical parameter, wastewater discharge, oil industry, environment, contaminants

Impacts of Organic Wastes on Plankton Population of Woji Creek, Port Harcourt, Rivers State, Nigeria

2018 ◽  
Vol 5 (01-02 & Sp1) ◽  
Author(s):  
Utibe I. Daniel ◽  
◽  
Christiana C. Duru ◽  
Obemeata Oriakpono ◽  
M.O.E. Iwuala
Keyword(s):  
Organic Wastes ◽  
Port Harcourt ◽  
Rivers State ◽  
Plankton Population

scholarly journals Geothermal Boreholes in Poland—Overview of the Current State of Knowledge

Energies ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 3251
Author(s):  
Tomasz Sliwa ◽  
Aneta Sapińska-Śliwa ◽  
Andrzej Gonet ◽  
Tomasz Kowalski ◽  
Anna Sojczyńska
Keyword(s):  
Heat Exchangers ◽  
Oil And Gas ◽  
Produced Water ◽  
Geothermal Water ◽  
Laboratory System ◽  
Water Production ◽  
Injection Wells ◽  
Geological Conditions ◽  
Geothermal Wells ◽  
Borehole Heat Exchangers

Geothermal energy can be useful after extraction from geothermal wells, borehole heat exchangers and/or natural sources. Types of geothermal boreholes are geothermal wells (for geothermal water production and injection) and borehole heat exchangers (for heat exchange with the ground without mass transfer). The purpose of geothermal production wells is to harvest the geothermal water present in the aquifer. They often involve a pumping chamber. Geothermal injection wells are used for injecting back the produced geothermal water into the aquifer, having harvested the energy contained within. The paper presents the parameters of geothermal boreholes in Poland (geothermal wells and borehole heat exchangers). The definitions of geothermal boreholes, geothermal wells and borehole heat exchangers were ordered. The dates of construction, depth, purposes, spatial orientation, materials used in the construction of geothermal boreholes for casing pipes, method of water production and type of closure for the boreholes are presented. Additionally, production boreholes are presented along with their efficiency and the temperature of produced water measured at the head. Borehole heat exchangers of different designs are presented in the paper. Only 19 boreholes were created at the Laboratory of Geoenergetics at the Faculty of Drilling, Oil and Gas, AGH University of Science and Technology in Krakow; however, it is a globally unique collection of borehole heat exchangers, each of which has a different design for identical geological conditions: heat exchanger pipe configuration, seal/filling and shank spacing are variable. Using these boreholes, the operating parameters for different designs are tested. The laboratory system is also used to provide heat and cold for two university buildings. Two coefficients, which separately characterize geothermal boreholes (wells and borehole heat exchangers) are described in the paper.

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