Energy, cost, and environmental analysis of individuals and district cooling systems for a new residential city

Alajmi, Ali; Zedan, Mohamed

doi:10.1016/j.scs.2019.101976

Cited by 17 publications

(8 citation statements)

References 10 publications

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“…In response to this, GCC governments have in the past adopted measures to mitigate production fluctuations and ensure energy security in general. They have invested in the use of energy-efficient (and thus more climate-friendly) cooling technologies such as district cooling, which has 18–55% lower energy consumption, and 20–30% lower life-cycle cost than current cooling alternatives ( Alajmi and Zedan, 2020 ). District cooling in the GCC region is mostly used for residential areas, the water source for which can theoretically stem from freshwater, desalinated water or treated wastewater ( Alajmi and Zedan, 2020 ; Eveloy and Ayou, 2019 ).…”

Section: Resultsmentioning

confidence: 99%

“…They have invested in the use of energy-efficient (and thus more climate-friendly) cooling technologies such as district cooling, which has 18–55% lower energy consumption, and 20–30% lower life-cycle cost than current cooling alternatives ( Alajmi and Zedan, 2020 ). District cooling in the GCC region is mostly used for residential areas, the water source for which can theoretically stem from freshwater, desalinated water or treated wastewater ( Alajmi and Zedan, 2020 ; Eveloy and Ayou, 2019 ). However, the supply of water is the main concern for district cooling companies in the region (10% of the plants' operational costs), and has been largely covered through desalinated water due to past concerns of these companies regarding corrosion and fouling associated with the use of seawater or treated wastewater ( Rajan, 2009 ).…”

Section: Resultsmentioning

confidence: 99%

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The water-energy-food nexus and COVID-19: Towards a systematization of impacts and responses

Al‐Saidi

Hussein

2021

Science of The Total Environment

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

The water-energy-food nexus and COVID-19: Towards a systematization of impacts and responses

Al‐Saidi

Hussein

2021

Science of The Total Environment

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“…To provide an effective evaluation of the energy system and the cost-effective alternatives, life cycle cost analysis (LCCA) could be considered. The energy performance and cost analysis of DCS have been evaluated in several studies [69][70][71].…”

Section: Energy Efficiency and Life Cycle Analysismentioning

confidence: 99%

Review on District Cooling and Its Application in Energy Systems

Sayadi¹,

Akander²,

Hayati³

et al. 2023

Urban Transition - Perspectives on Urban Systems and Environments

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This chapter investigates the implementation of district cooling systems by exploring several research studies reported in the literature. The topics addressed include typologies and design parameters, benefits and limitations, applications of the system, and the technology readiness level. District cooling systems are generally regarded as cost-efficient and environmentally friendly solutions. One might think that district cooling is only a solution for areas with a very warm climate. However, based on the reported results of the surveyed studies, the number of operating district cooling systems has increased over the years, with the Scandinavian countries taking the lead in this market within European countries. Implementation of these systems concluded reduction in primary energy and electricity use, they also proved to be an environmentally efficient way.

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“…R Network (green arrow in Figure 2), is classified as a residue. Equation (24) was used to calculate this exergy destruction. Based on the residue cost allocation criterion proposed by Torres et al [47], its cost is allocated as additional fuels to the CHP plant, HP, and pumps.…”

Section: Exergoeconomic and Exergy Modeling Of A Ring-shaped Networkmentioning

confidence: 99%

“…They found that the marginal cost could better reflect, compared to the real heat price model, the actual increase of variable heat production costs while accounting for the heat production technology adopted. Alajmi and Zedam [24] performed a life cycle cost analysis for comparing DC systems, rooftop units, and variable refrigerant flow as the cooling systems of buildings in hot climates. The study indicated that DC systems are the most cost-effective option over a life cycle of 24 years.…”

Section: Introductionmentioning

confidence: 99%

Exergoeconomics as a Cost-Accounting Method in Thermal Grids with the Presence of Renewable Energy Producers

et al. 2022

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Thermal grids are efficient, reliable, and sustainable technologies for satisfying the thermal demands of buildings. The capability to operate at a low temperature allows not only for the integration of heat produced by renewable energy sources but also for the storage of surplus electricity from the grid via “power to heat” technologies. Besides, in the future, heat consumers are expected to behave increasingly as “prosumers”, supplying in some periods heat produced by renewable energy plants on site. In this scenario, it is important to propose a method for the cost allocation among producers connected to the grid. In this regard, this paper proposes Exergoeconomics as a possible tool for rational cost assignment. To show the capabilities of the method, some operating scenarios are compared for a cluster of five buildings of the tertiary sector interconnected by a thermal grid. Based on exergoeconomic indicators, such as the exergy and exergoeconomic unit costs, insights into the cost formation process of the heat consumed by users are provided. Sensitivity analyses of heat unit cost to design and operating variables are also performed. Results show that in the presence of distributed producers, the heat unit cost could be approximately 33% lower than in the case of centralized production, due to the lower amount of irreversibility generated. Capital investment accounts for 20–28% of the heat unit cost.

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Energy, cost, and environmental analysis of individuals and district cooling systems for a new residential city

Cited by 17 publications

References 10 publications

The water-energy-food nexus and COVID-19: Towards a systematization of impacts and responses

The water-energy-food nexus and COVID-19: Towards a systematization of impacts and responses

Review on District Cooling and Its Application in Energy Systems

Exergoeconomics as a Cost-Accounting Method in Thermal Grids with the Presence of Renewable Energy Producers

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