A Concept for Solving the Sustainability of Cities Worldwide

Considering that more than half of the world’s population today lives in cities and consumes about 80% of the world’s energy and that there is a problem with drinking water supply, this paper presents a way to solve the problem of the sustainability of cities by enabling their complete independence from external sources of energy and drinking water. The proposed solution entails the use of Seawater Steam Engine (SSE) technology to supply cities with electricity, thermal energy and drinking water. The system would involve the seasonal storage of electricity and thermal energy, supported by geothermal heat pumps. The strategy of the distribution network would be based on the original concept of the “loop”. In cities that do not have enough space, SSE collectors would be placed above the lower parts of the city like “canopies”. The city of Zagreb (Croatia) was selected as a case study due to its size, climate and vulnerability to natural disasters. The results show that Zagreb could become sustainable in 30 years with the allocation of less than 2% of GDP and could become a paradigm of sustainability for cities worldwide. This paper encourages the development of the “Philosophy of Sustainability” because the stated goals cannot be achieved without a change in consciousness.

Download Full-text

DINAMIKA PENYINTAS MENJADI RELAWAN

DIALEKTIKA : Jurnal Ekonomi dan Ilmu Sosial ◽

10.36636/dialektika.v4i1.284 ◽

2019 ◽

Vol 4 (1) ◽

pp. 34-44

Author(s):

Indah Ahdiah

Keyword(s):

Natural Disasters ◽

Qualitative Method ◽

Driving Factors ◽

Motivating Factors ◽

Human Beings ◽

Case Study Approach ◽

Study Approach ◽

Humanitarian Organizations ◽

The City

AbstrakThis study aims to determine the background and motivating factors for survivors to become local volunteers in the earthquake, tsunami and liquefaction natural disasters that occurred on September 28 in the city of Palu. The method used is a qualitative method with a case study approach. The results of the study showed that being a survivor's background in volunteering was a position as a board or member of Muhammadiyah, and there was also an interest in MDMC work. The driving factors (1) imply the meaning of Al Maun, be useful human beings, (2) as an act of gratitude, (3) an expression of gratitude for the opportunity of life given by God, (4) working as a volunteer becomes one of the ways to restore emotions.Keywords : survivor, volunteer, humanitarian organizations

Download Full-text

Contribution to study of the dependability of a drinking water system

Journal of Water and Land Development ◽

10.2478/jwld-2018-0037 ◽

2018 ◽

Vol 38 (1) ◽

pp. 11-18

Author(s):

Djamila Boumelita ◽

Lahbassi Ouerdachi ◽

Nasr-Eddine Debbache

Keyword(s):

Drinking Water ◽

Water Supply ◽

Block Diagram ◽

Water System ◽

Spatial Modelling ◽

Structural Aspect ◽

Drinking Water System ◽

Criticality Index ◽

The City

AbstractIn order to ensure better availability of water resource to different users, we undertook a dependability study of system for drinking water supply. A real case study was done on the water supply network in the city of El Hadjarin Algeria. We started from the site modelling, which provided a calculation of a Hydraulic Criticality Index (HCI) in order to prioritize the importance of pipes in the network. Once the indices were calculated, a modelling procedure of reliability block diagram was applied. The objective was to study and analyse the existing network to measure the water availability problems and try to provide viable solutions. An action on the structural aspect and hardware may be required in order to ensure better availability of water and make the system more reliable. Spatial modelling is also proposed to be able to monitor different parts of the network where problems may occur.

Download Full-text

Geothermal Heat Pumps in K-12 Schools -- A Case Study of the Lincoln, Nebraska, Schools

10.2172/814076 ◽

2000 ◽

Cited By ~ 4

Author(s):

J A Shonder

Keyword(s):

Heat Pumps ◽

Geothermal Heat ◽

K 12

Download Full-text

Controlling taste and odour events for the city of Philadelphia, USA: a case study

Water Science & Technology Water Supply ◽

10.2166/ws.2008.060 ◽

2008 ◽

Vol 8 (2) ◽

pp. 135-141 ◽

Cited By ~ 1

Author(s):

I. H. (Mel) Suffet ◽

Gary Burlingame ◽

Erin Mackey

Keyword(s):

Drinking Water ◽

Early Warning ◽

Distribution System ◽

Warning System ◽

Consumer Complaints ◽

Chlorine Disinfection ◽

Drinking Waters ◽

Year 2000 ◽

The City

The overall goal of this case study is to describe the history and present methods that the Philadelphia Water Department (PWD) uses to address its on-going earthy and musty drinking water T&O problems. The Philadelphia Water Department has developed a baseline for its water's aesthetic qualities since the early 1980’s. Philadelphia feels it has sufficient resources to control taste and odour problems. However, when directly asked, only 61–64% of the consumers are satisfied with the taste and odour of Philadelphia's drinking waters. A taste and odour early warning system is being developed for the two drinking water sources, the Delaware and Schuylkill rivers. Secondly, routine T&O panels and chemical analysis of geosmin and MIB are completed. Since the year 2000, 10 ng/L has become an early warning wake-up call for PWD. When higher levels are observed, testing is a priority, the source of the T&O is investigated and consumer complaints are monitored carefully. Present water treatment plants are conventional with chlorine disinfection, coagulation/sedimentation, rapid dual media filtration and final chloramination. The PWD uses powdered activated carbon, river water bypass and hydraulic changes in the distribution system to minimise odour events.

Download Full-text

Multi-criteria analysis applied to the selection of drinking water sources in developing countries: a case study of Cali, Colombia

Journal of Water Sanitation and Hygiene for Development ◽

10.2166/washdev.2016.031 ◽

2016 ◽

Vol 6 (3) ◽

pp. 401-413 ◽

Cited By ~ 1

Author(s):

Juan Pablo Gutiérrez ◽

Luis Germán Delgado ◽

Doris van Halem ◽

Peter Wessels ◽

Luuk C. Rietveld

Keyword(s):

Drinking Water ◽

Water Supply ◽

High Water ◽

Water Sources ◽

Political Community ◽

Current Water ◽

Multi Criteria Analysis ◽

The City ◽

Selection Of

Guaranteeing a safe and continuous drinking water supply for the city of Cali, Colombia, has become a concern for the water company of Cali, the environmental authorities, universities, and entities involved in the water resource. The progressive deterioration of the city's water sources has led to a search for future water sources and/or technologies in order to ensure high water quality standards at minimal costs. This paper describes a variety of problems occurring in the current water supply system in Cali and gives a description of the alternatives that have been considered to solve these problems in the past decades. Multi-criteria analysis was applied to assess alternatives for safe drinking supplies, demonstrating their suitability during the decision-making process when constraints arise due to political, community and institutional interests.

Download Full-text

The Role of Tourist Ambassadors in the Image Establishment of Palu City After the Natural Disasters through Instagram

MEDIASI ◽

10.46961/mediasi.v1i1.403 ◽

2020 ◽

Vol 1 (1) ◽

pp. 73-78

Author(s):

Sumarni Zaenuddin ◽

Donal Adrian

Keyword(s):

Natural Disasters ◽

Information Content ◽

Case Study Approach ◽

Study Approach ◽

Research Findings ◽

The Government ◽

Main Thing ◽

The City

The purpose of research is to know the role of tourist ambassadors in the formation of the image of Palu City after the natural disasters through Instagram. The method used is qualitative with a case study approach withdrawal of informant using purposive sampling. Research findings show that in the effort to build imagery through Instagram, the main thing that is done by tourist ambassadors (Randa'a ante Kabilasa) is by changing the perception of society as a follower through the publication of various kinds of information/content both in the form of images, texts, and videos about the city of Palu affected by natural disasters but able to rise to a better change, i.e. the activity of public that return to normal in the field of economics and culture. Furthermore, the improvement of land road infrastructure, air (airport) and the sea (port) is the main focus of the government.

Download Full-text

Assessment of heat pump efficiency for microclimate formation in a greenhouse

MATEC Web of Conferences ◽

10.1051/matecconf/201824506017 ◽

2018 ◽

Vol 245 ◽

pp. 06017 ◽

Cited By ~ 1

Author(s):

Polina Tretyakova

Keyword(s):

Heat Pump ◽

Thermal Energy ◽

Closed Loop ◽

Net Present Value ◽

Cooling System ◽

Heating System ◽

Heat Pumps ◽

Pump Efficiency ◽

Present Value ◽

The City

The article provides information about the ring heating system comprising heat pumps. The system is designed as a closed loop, which includes a pump, a thermal energy battery, and a heat pump. The evaporator is connected to the system of water intake from the well and the cooling system of air inside the greenhouse. The resulting thermal energy is consumed for the needs of heating and watering the greenhouse complex. We present a method for determining the dependence of the net present value on the temperatures in supply and return pipelines and temperature of low-potential heat source. The main economic indicators of the implementation of this system on a typical block greenhouse in the city of Tyumen are determined.

Download Full-text