Effects of Fine Grid NO2 Modeling around a Thermal Power Station: A Case Study

2021 ◽  
Vol 7 (1) ◽  
pp. 67-79
Author(s):  
Md Masud Karim ◽  
Navin Bindra ◽  
Mohammed Mukteruzzaman
Keyword(s):  
City Planning ◽  
Thermal Power ◽  
Annual Average ◽  
Fine Grid ◽  
Close Proximity ◽  
Gas Generators ◽  
Minimum Height ◽  
The Government ◽  
Regulatory Model ◽  
Concentration Levels

Objective: The objective of this study was to assess the outcome of fine grid modeling on top of a courser grid to predict the NO2 concentration more accurately in an airshed and at sensitive receptors. Methods: This study assessed the cumulative NO2 impact of all major emission sources in an airshed using USEPA regulatory model AERMOD. A 50 km by 50 km airshed is considered in the study. Micro-environmental pollution was modeled using a refined grid analysis. An area (4 km x 4 km) close to GTPS, with receptors at every 150 m apart and a further fine grid (500 m x 500 m) with receptors at every 50 m apart, was modeled. Results: Coarse grid modeling showed annual average NO2 concentration levels within applicable standards. However, when fine grid modeling was conducted, the predicted annual average NO2 concentration levels were found to exceed World Bank Guidelines and Bangladesh Standards. A source contribution analysis showed that a quick rental power plant (natural gas generators) without proper stacks contributed a significant portion of the maximum 1-hr and annual average NO2 concentration (76% and 86%, respectively). Conclusion: The findings of fine grid modeling can be used at the policy level of the government to enforce environmental regulations on the minimum height requirements of stacks and city planning, avoiding downwind directions and the close proximity of powerplants to safeguard human health.

IMPROVING THE EFFICIENCY OF HOT GAS GENERATORS FOR HEATING AUTOMOTIVE EQUIPMENT

2021 ◽  
Vol 2 (143) ◽  
pp. 46-53
Author(s):  
Andrey V. Negovora ◽  
◽  
Makhmut M. Razyapov ◽  
Arseniy A. Kozeyev
Keyword(s):  
Heat Pipe ◽  
Thermal Energy ◽  
Thermal Power ◽  
Research Purpose ◽  
Gas Generator ◽  
Thermoelectric Converter ◽  
Remote Monitoring System ◽  
Hot Gas ◽  
Safety Research ◽  
Gas Generators

Hot gas generators are used as a source of thermal energy for pre-start preparation of motor vehicles in cold climatic conditions. Their wide application is due to the high thermal power and safety. (Research purpose) The research purpose is in determining the possibilities of using thermoelectric modules to reduce the energy consumption of the battery by hot gas generators. (Materials and methods) Authors used research methods based on the application of standard techniques, while the object of research was the power supply system of a thermal energy source. (Results and discussion) Authors conducted research on ways and methods to reduce the electric consumption of a hot gas generator by recuperating thermal energy into electrical energy using thermoelectric generator modules. The thermoelectric converters installed on the heat pipe of the hot gas generator, due to the high temperature difference, will allow to obtain a high value of the electromotive force. Modeling of the nozzle in the software package of the Ansys three-dimensional modeling system showed that part of the heat energy goes through the surface of the heat pipe. The article proposes the use of a nozzle with a thermoelectric converter installed on the outer surface of the cylinder instead of a heat pipe. The article presents the mathematical model of an improved hot gas generator nozzle. (Conclusions) The use of a thermoelectric converter for the utilization of thermal energy and the replacement of energy losses of the battery, which feeds the hot gas generator, will reduce the internal power losses of the battery and increase the technical readiness of automotive equipment. The introduction of a comprehensive heat treatment system, which is intelligently and functionally linked to a remote monitoring system, will significantly increase the service life of the units most exposed to temperature influences.

A Cross Sectional Analysis of Tourism Development and Social Development

2021 ◽  
Vol 12 (2) ◽  
pp. 487
Author(s):  
Tauseef AMAN ◽  
Mussawar SHAH ◽  
Humera JAMAL ◽  
Younas KHAN ◽  
Muhammad ARIF ◽  
...  
Keyword(s):  
Social Development ◽  
Local Community ◽  
Tourism Development ◽  
Chi Square ◽  
Cross Sectional ◽  
Close Proximity ◽  
Chi Square Test ◽  
The Government ◽  
Sectional Analysis ◽  
The Relationship

The major objective of this study was to measure the association between various interventions and Chitral Gole National Park (CGNP) role in preservation of bio-diversity and socio-economic uplift. A sample size of 346 respondents was randomly selected from total population of 3326 from the 4 selected villages on the basis of close proximity. A conceptual framework including dependent variable social development and independent variable tourism development were taken. The data were analyzed through frequency and percentage distribution. Moreover, Chi-square test was applied to know the relationship between dependent and independent variables at bi-variate level. In bi-variate analysis a highly significant (P=0.000) relation was found between CGNP is main source of promoting tourism in Chitral,tourists do any impacts upon local community in terms of increased business activities, local culture is safeguarded despite influx of tourists in the area, tourism produced employment opportunities, and social development. Qualitative data supported the empirical findings, however tourism brings economic opportunities at micro and macro level, but unfortunately CGNP is not as satisfactory regarding generating income since its establishment. The government should ensure to make such polices pertaining to the entrance fee, provides accommodation services on payment to the tourists and to reserve the entrance fee or any other form of taxes to ensure CGNP to spend on self-sustaining basis by ensuring refinement in the procedures as well.

scholarly journals The Regulatory Model for Eradication Corruption in Infrastructure Funding

2019 ◽  
Vol 15 (1) ◽  
pp. 36-42
Author(s):  
Julyatika Fitriyaningrum ◽  
Ridwan Arifin
Keyword(s):  
Regional Development ◽  
Cultural Factors ◽  
Institutional Factors ◽  
Economic Factors ◽  
Infrastructure Development ◽  
Cultural Approach ◽  
Historical Factors ◽  
Legislative Policies ◽  
The Government ◽  
Regulatory Model

This study aims to identify the causes and formulate a regulatory model for the eradication of Corruption in regional infrastructure development funds in Indonesia. This research was conducted by examining cases and laws related to Corruption. Some of the causes of corruption in regional development funds are: 1)Historical Factors; 2)Economic Factors; 3)Cultural Factors and 4)Institutional Factors. Although all four factors have been identified, there are still many countries that have not succeeded in eradicating corruption. An extraordinary crime requires extraordinary effort. The Government of Indonesia needs to formulate legislative policies with those manifested in specific deviant provisions. In addition, there are four approaches that are needed, namely legal approach, moralistic-religious approach, socio-cultural approach, and educational approaches. Massive actions must also be taken in various regions to start an anti-corruption measure.

scholarly journals Introduction to urban agriculture

2021 ◽  
Vol 81 (6) ◽  
pp. 399-406
Author(s):  
Luka Brezinščak ◽  
Ana Poštek ◽  
Ivica Kisić
Keyword(s):  
Urban Agriculture ◽  
City Planning ◽  
Positive Influence ◽  
General Concept ◽  
Economic Life ◽  
City Development ◽  
Raising Awareness ◽  
New Type ◽  
The Government ◽  
Social Environmental

An increasing number of population in the cities has problems with food security, transportation and environmental protection. To misticate these problems, a new type of agriculture has been established: Urban Agriculture (UA). In this paper, we are introducing the concept of UA and provide basic information on the definition and forms of UA. The article aims to provide insight into the general concept of UA for sustainable city development. UA has a positive influence on social, environmental and economic life in the cities, which should encourage members of the government and private sector to utilize UA as an important part in city planning. However, there are reservations which should be taken into account, but by raising awareness we add to a better understanding of mechanisms in UA.

Power Generation from Coal Gangue in China: Current Status and Development

2012 ◽  
Vol 550-553 ◽  
pp. 443-446 ◽  
Author(s):  
Jiang Long Yu ◽  
Fang Rui Meng ◽  
Xian Chun Li ◽  
Arash Tahmasebi
Keyword(s):  
Power Generation ◽  
Government Regulation ◽  
Thermal Power ◽  
Coal Gangue ◽  
Current Status ◽  
Particulate Matter Emission ◽  
The Government ◽  
Efficient Power ◽  
Plant Efficiency

This paper provides an overview on the current status of power generation in China using coal gangue. The government regulation towards the use of coal gangue for power generation is introduced. Emission of pollutants and low thermal power plant efficiency are the two major problems for the power industry firing coal gangue. Particulate matter emission control is a problem due to the high ash content. Sulfur emissions from these units are easily controlled mostly through lime/limestone injection and in-situ capture. Overall, efficient power generation using coal gangue is a promising approach to reduce the use of coal resources and reduce the environmental impacts.

Comparison of Two Linear Collectors in Solar Thermal Plants: Parabolic Trough Versus Fresnel

2012 ◽  
Vol 135 (1) ◽  
Author(s):  
A. Giostri ◽  
M. Binotti ◽  
P. Silva ◽  
E. Macchi ◽  
G. Manzolini
Keyword(s):  
Power Plants ◽  
Thermal Power ◽  
The United States ◽  
Solar Thermal ◽  
Steam Generation ◽  
Parabolic Trough ◽  
Annual Average ◽  
Optical Efficiency ◽  
Levelized Cost Of Electricity ◽  
Synthetic Oil

Parabolic trough (PT) technology can be considered the state of the art for solar thermal power plants thanks to the almost 30 yr of experience gained in SEGS and, recently, Nevada Solar One plants in the United States and Andasol plant in Spain. One of the major issues that limits the wide diffusion of this technology is the high investment cost of the solar field and, particularly, of the solar collector. For this reason, research has focused on developing new solutions that aim to reduce costs. This paper compares, at nominal conditions, commercial Fresnel technology for direct steam generation with conventional parabolic trough technology based on synthetic oil as heat-transfer. The comparison addresses nominal conditions as well as annual average performance. In both technologies, no thermal storage system is considered. Performance is calculated by Thermoflex®, a commercial code, with a dedicated component to evaluate solar plant. Results will show that, at nominal conditions, Fresnel technology has an optical efficiency of 67%, which is lower than the 75% efficiency of the parabolic trough. Calculated net electric efficiency is about 19.25%, whereas PT technology achieves 23.6% efficiency. In off-design conditions, the performance gap between Fresnel and parabolic trough increases because the former is significantly affected by high incident angles of solar radiation. The calculated sun-to-electric annual average efficiency for a Fresnel plant is 10.2%, which is a consequence of the average optical efficiency of 38.8%; a parabolic trough achieves an overall efficiency of 16%, with an optical efficiency of 52.7%. An additional case with a Fresnel collector and synthetic-oil outlines the differences among the cases investigated. Since part of the performance difference between Fresnel and PT technologies is simply due to different definitions, we introduce additional indexes to make a consistent comparison. Finally, a simplified economic assessment shows that Fresnel collectors must reduce investment costs of at least 45% than parabolic trough to achieve the same levelized cost of electricity.

scholarly journals Museums and Heritage Sites — The Missing Link in Smart City Planning: A Case Study of Pune City, India

2021 ◽  
Vol 8 (4) ◽  
pp. 33-47
Author(s):  
Poonam Gandhi ◽  
Chaitanya Ravi ◽  
Prasad Pathak ◽  
Smriti Jalihal
Keyword(s):  
Smart City ◽  
City Planning ◽  
Smart Cities ◽  
Cultural Development ◽  
Urban Life ◽  
Inclusive Development ◽  
Heritage Sites ◽  
Infrastructural Development ◽  
Cultural Spaces ◽  
The Government

The process of urbanisation has dramatically increased in India in recent years. The Government of India launched Smart City Mission in 2015 which was intended to transform 100 cities into smart cities. The focus of our research is one such city in India on its path to smartification. Pune’s smart city mission focuses on techno-infrastructural development to increase mobility and digital connectivity. Social-cultural and historical indicators are not considered an integral part of this development. Given this, does the smart city mission of Pune privilege the techno-infrastructural development of a city over its social and cultural development?  In this paper, we identify museums and heritage sites in Pune as signifiers of a city's culture and analyse metro development plans through GIS to understand whether the museums' current geography mentioned above and heritage sites require alignment with Pune’s planned smart city mission. The research shows that the quest to ‘upgrade’ and ‘modernise’ is not adequately aligned with the role of key historic-cultural institutions such as museums and heritage sites. The case of Pune city shows that, without careful and inclusive development plan, a full roll-out of the smart city project will exclude a large number of historical and cultural spaces such as museums and heritage sites from emerging as an integral part of smart cities across the country and render them peripheral to modern urban life.  

scholarly journals Discourse Analysis on Announcement and Prohibition Board in the Province of Bangka Belitung Archipelago: The Study of Smart City

2021 ◽  
Vol 6 (2) ◽  
Author(s):  
Putra Pratama Saputra ◽  
Nurvita Wijayanti ◽  
Panggio Restu Wilujeng
Keyword(s):  
Smart City ◽  
Quantitative Research ◽  
City Planning ◽  
Local Community ◽  
Linguistic Rules ◽  
Writing Standards ◽  
The Government ◽  
Role Of The Government ◽  
Planning Office ◽  
The City

Announcement board in the city is somehow disturbing because of the illogical linguistic rules therefore it does not support the development of the smart city.The banned boards are indicated to have less educative meaning because they contain elements of swearing, diatribe, bad prayer, and spelling and writing errors. The role of the government in this matter that is responsible for making writing standards and the contents of prohibition boards and notice boards must be in line with the standard rules of language. Therefore, the researcher wants to collaborate with the City Planning Office, which in this case is responsible for arranging the prohibition and announcement boards in the municipal, regency, and sub-district cities in the Bangka Belitung Islands Province. Therefore, the view of Sociology studies is needed to recommend the concept of an ecology city based on smart city. The research method used is mixed method, namely qualitative research conducted  by interviewing the local community and quantitative research by conducting a questionnaire and counting the prohibition boards and announcements that are indicated not in accordance with the language rules.

scholarly journals Evaluation of aerial technogenic pollution near industrial enterprises in the tundra zone (by the example of Vorkuta city)

2019 ◽  
pp. 94-105
Author(s):  
M. I. Vasilevich ◽  
R. S. Vasilevich ◽  
D. N. Gabov ◽  
B. M. Kondratenok
Keyword(s):  
Power Plant ◽  
Snow Cover ◽  
Thermal Power Plant ◽  
Thermal Power ◽  
Quantitative Chemical Analysis ◽  
Space Images ◽  
Industrial Enterprises ◽  
Coal Particles ◽  
Close Proximity ◽  
High Concentrations

The quantitative chemical analysis of snow cover has been carried out for the Vorkuta agglomeration territory. The on-site ingress of pollutants in close proximity to industrial enterprises in Vorkuta is calculated. The schematic maps of substance distribution in snow in the studied area are built using space images. The control levels of aerotechnogenic pollution are established for the city, industrial zones and adjacent territories for the purpose of subsequent ecological monitoring. The pH value of snowmelt water reaches 6.5-7.2 due to a high content of alkaline components (calcium and magnesium carbonates) in snow. The snow cover of the Vorkuta agglomeration is highly enriched with heavy metals. The maximum permissible concentrations are exceeded for manganese, nickel, aluminum, vanadium, molybdenum and mercury. High concentrations of mercury in snow are supposedly related to coal combustion at the thermal power plant. After that mercury may be occluded on a surface of coal particles and ashes. It is shown that it is possible to establish the zones of the greatest aerogenic impact according to the content of mercury and vanadium in the snow. Factor analysis was used to identify the mechanisms of pollutants and factors forming the chemical composition of the snow cover. The share of elements in the suspended solids is more than 60% of their total content in snowmelt water. High concentrations of suspended particles (up to 720 mg/dm3) were observed in the snow of Vorkuta. The most severe pollution of the snow cover is registered in close proximity to thermal power plant №2. According to the calculations of the total pollution index, the highest excess of substance increment over the background level was noted in the sanitary protection zone around the thermal power plant №2.

scholarly journals Solar Roof Top Generation, Marginal Cost, Financial Impacts on the Utility of Sri Lanka

2019 ◽  
Vol 12 (4) ◽  
pp. 128
Author(s):  
J. G. L. S. Jayawardena ◽  
U. Anura Kumara ◽  
M. A. K. Sriyalatha
Keyword(s):  
Sri Lanka ◽  
Thermal Power ◽  
Electricity Sector ◽  
Financial Impact ◽  
The Government ◽  
Tariff Structure ◽  
Financial Impacts ◽  
Utility Scale ◽  
The Impact ◽  
Solar Generation

The intensity of solar radiation in Sri Lanka is 1,247-2,106 kWh/m2 per annum (SEA, 2014). There are existing solar generation capacities of 177 MW by using solar roof top systems and 51 MW of the utility scale solar plants in the country as at 28th March 2019. The Government of Sri Lanka(GOSL) introduce Building Integrated Photo Voltaic program since 2009 basically to bank the surplus of electricity units with the Utility. In 2016 GOSL introduced cash payback method for surplus energy generated by Roof Top Solar installations. Some of the stakeholders of the electricity sector argue that the Roof Top Solar generation program has negative financial impact on the financial position of the utility. The impact of the Solar Roof Top program on revenue of the Utility and the customer tariff system has been studied. Results show that Feed in Tariff of the Solar Roof Top is comparatively low with most of the thermal power generation. According to the findings of the study it can be concluded that the financial impact of the program is beneficial to the economy as a whole, but marginally negative to the short terms cash flow of the utility. Anyhow it is seen that such utility centric negativity can be ameliorated though due tariff structure. The government has to consider about the electricity policy of customer tariff in order to provide the concessions only for the needy people.

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