Comparative assessment of different air‐conditioning systems for nearly/net zero‐energy buildings

Singh, Gaurav; Das, Ranjan

doi:10.1002/er.5065

Cited by 41 publications

(5 citation statements)

References 27 publications

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“…A net-positive energy building over an average year generates more energy from renewable energy sources than it uses, as shown in Fig. 8 , and can support energy sustainability (Rosen 2015 ; Endo et al 2019 ; Delavar and Sahebi 2020 ; Tumminia et al 2020 ; Singh and Das 2020 ). A net-positive energy building uses energy for a variety of tasks and generates energy from various renewable energy resources, and achieves net-positive energy status through advanced design and exploitation of technologies such as advanced automation, controls, component integration, energy storage, lighting and HVAC.…”

Section: Illustrationmentioning

confidence: 99%

Energy Sustainability with a Focus on Environmental Perspectives

Rosen

2021

Earth Syst Environ

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Energy sustainability is a key consideration for anthropogenic activity and the development of societies, and more broadly, civilization. In this article, energy sustainability is described and examined, as are methods and technologies that can help enhance it. As a key component of sustainability, the significance and importance of energy sustainability becomes clear. Requirements to enhance energy sustainability are described, including low environmental and ecological impacts, sustainable energy resources and complementary energy carriers, high efficiencies, and various other factors. The latter are predominantly non-technical, and include living standards, societal acceptability and equity. The outcomes and results are anticipated to inform and educate about energy sustainability, to provide an impetus to greater energy sustainability.

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Section: Illustrationmentioning

confidence: 99%

Energy Sustainability with a Focus on Environmental Perspectives

Rosen

2021

Earth Syst Environ

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“…Singh and Das [5] integrated solar thermal energy and natural gas resources to reduce primary energy demand in absorption based cooling systems. In addition to solar thermal resource, solar photovoltaics can be used in building air-conditioning systems in order to realize net/nearly zero energy status in commercial and residential buildings [6]. It is also envisaged that usage of desiccant and its regeneration using solar energy in building cooling systems is a promising concept for addressing various issues related to energy demand, reduction of carbon footprint and performance improvement [7].…”

Section: Introductionmentioning

confidence: 99%

Performance assessment of solar and desiccant aided building air-conditioning system

Singh

Das²

2023

J. Phys.: Conf. Ser.

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Indoor thermal comfort significantly influences people’s health, happiness and consequently the output at the workplace. Here, a systematic simulation study on a conventional vapor compression-based building cooling system integrated with desiccant assisted dedicated outdoor air system (DOAS) is performed using EnergyPlus software for warm and humid climate zones. Impact of using desiccant material in the DOAS, on the cooling load requirement of the building, coefficient of performance (COP), and energy consumption of the system is discussed. The building design is well-validated with the available guidelines. Desiccant assisted system supplies dehumidified air inside the building space which affects the evaporator performance. A flat plate solar collector system is used to supply the hot air to regenerate the desiccant material. Electric energy savings in desiccant assisted system can be achieved up to 5.5 %, whereas, the COP of the system is not found to be significantly affected even though thermal load demand reduces by nearly 13.5 % by the proposed modification.

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“…Electrical networks can be considered part of the three main greenhouse gas emitters (mainly CO 2 ), surpassed only by extensive livestock and transportation systems. The electrical sector's emissions of atmospheric pollutants are associated with thermal generation plants that use coal, natural gas, or diesel to produce electricity [3,4]. With the aim of reducing the negative impacts of conventional fossil fuel-based generation, modern power grids are gradually integrating renewable energy resources at all voltage levels, i.e., from high-to low-voltage networks [5,6].…”

Section: Introduction 1general Contextmentioning

confidence: 99%

An Energy Management System for PV Sources in Standalone and Connected DC Networks Considering Economic, Technical, and Environmental Indices

et al. 2022

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This research proposes an efficient energy management system for standalone and grid-connected direct current (DC) distribution networks that consider photovoltaic (PV) generation sources. A complete nonlinear programming model is formulated to represent the efficient PV dispatch problem while taking three different objective functions into account. The first objective function corresponds to the minimization of the operational costs with respect to the energy purchasing costs at terminals of the substation, including the maintenance costs of the PV sources. The second objective function is the reduction of the expected daily energy losses regarding all resistive effects of the distribution lines. The third objective function concerns the minimization of the total emissions of CO2 into the atmosphere by the substation bus or its equivalent (diesel generator). These objective functions are minimized using a single-objective optimization approach through the application of the Salp Swarm Algorithm (SSA), which is combined with a matrix hourly power flow formulation that works by using a leader–follower operation scheme. Two test feeders composed of 27 and 33 nodes set for standalone and grid-connected operation are used in the numerical validations. The standalone grid corresponds to an adaptation of the generation and demand curves for the municipality of Capurganá, and the grid-connected system is adapted to the operating conditions in the metropolitan area of Medellín, i.e., a rural area and a major city in Colombia. A numerical comparison with three additional combinatorial optimizers (i.e., particle swarm optimization (PSO), the multiverse optimizer (MVO), and the crow search algorithm (CSA)) demonstrates the effectiveness and robustness of the proposed leader–follower optimization approach to the optimal management of PV generation sources in DC grids while considering different objective function indices.

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Comparative assessment of different air‐conditioning systems for nearly/net zero‐energy buildings

Cited by 41 publications

References 27 publications

Energy Sustainability with a Focus on Environmental Perspectives

Energy Sustainability with a Focus on Environmental Perspectives

Performance assessment of solar and desiccant aided building air-conditioning system

An Energy Management System for PV Sources in Standalone and Connected DC Networks Considering Economic, Technical, and Environmental Indices

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