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Dear Colleagues,

This Special Issue will collect selected papers presented at the Air, Heat, and Energy Conference, which will be held on 13–16 June 2023 in Karpacz, Poland. Authors of high-quality papers from the conference are encouraged to submit extended manuscripts to this dedicated Special Issue. This opportunity is also advertised on the conference website (https://airandheat.pl/).

The Air, Heat, and Energy Conference is a meeting place for both researchers and engineers to discuss the recent advances in the area of sustainable energy systems in buildings. The conference covers a wide range of topics related to energy generation, storage, transmission, and conservation. Regulations, standards, and policies related to these topics are also within the scope of the Special Issue.

The topics of interest include, but are not limited to, the following:

- Heating, ventilation, and air conditioning (HVAC),
- Sanitary systems,
- Gas networks and installations,
- Energy conservation and energy storage,
- Heat pumps, heat recovery, and phase change materials,
- Renewable energy resources,
- Sustainable development and smart cities,
- Smoke and heat exhaust ventilation.

Dr. Krzysztof Rajski
Dr. Sylwia Szczęśniak
Dr. Ali Sohani
Prof. Dr. Jan Danielewicz
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Energies is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

energy conservation
energy storage
renewable energy resources
HVAC
heat recovery

Published Papers (2 papers)

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Research

24 pages, 18418 KiB

Open AccessArticle

Analysis of Air Pollutants for a Small Paintshop by Means of a Mobile Platform and Geostatistical Methods

by Izabela Sówka, Robert Cichowicz, Maciej Dobrzański and Yaroslav Bezyk

Energies 2023, 16(23), 7716; https://doi.org/10.3390/en16237716 - 22 Nov 2023

Viewed by 475

Abstract

Air pollution, in terms of particulate matter (PM₁₀, PM_2.5, PM_1.0) and gaseous pollutants (H₂S and VOC), has serious health effects, particularly in cities. The evaluation of outdoor air quality was carried out in the vicinity of a small paintshop operating in the city of Łódź, Poland. The concentrations of pollutants in the vertical profiles (up to 47 m a.g.l.) of ambient air were measured using a mobile platform (unmanned aerial vehicle with measuring equipment) during three measurement campaigns in September 2021. The vertical structure of the pollutant concentrations indicated the occurrence of different types of layers with an almost constant concentration near the land surface, a strong decrease (up to ca. 10–15 m a.g.l.), and significant fluctuations in concentrations to higher levels (above 25 m a.g.l.). Particulate matter concentrations (PM₁₀, PM_2.5, PM_1.0) did not exceed 39 µg m⁻³, with stable levels on the surface. The maximum value of particulate matter concentrations (up to 38.5 µg m⁻³) in the vertical profiles was recorded at ca. 35–40 m a.g.l. The average concentrations of H₂S and VOC varied between 0.07 and 0.12 ppm and 0.01 and 0.27 ppm, respectively. The highest H₂S concentrations were observed at ca. 18–23 m a.g.l., reaching 0.14 ppm. A rapid increase in VOC concentrations, reaching 0.29 ppm, was measured in vertical profiles from 20 m a.g.l. and up to about 40 m a.g.l. In situ measurement approaches were combined with interpolation methods in the GIS system to investigate the spatial variability of pollution levels from a specified source in the urban atmosphere. Based on the survey results, the kriging interpolation method was well suited for generating spatially distributed pollution maps for individual measurement campaigns. Full article

(This article belongs to the Special Issue Selected Papers from the 16th Conference 'Air, Heat and Energy')

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13 pages, 2110 KiB

Open AccessArticle

Uncertainty Covered Techno-Enviro-Economic Viability Evaluation of a Solar Still Water Desalination Unit Using Monte Carlo Approach

by Saba Sedayevatan, Armida Bahrami, Fatemeh Delfani and Ali Sohani

Energies 2023, 16(19), 6924; https://doi.org/10.3390/en16196924 - 02 Oct 2023

Cited by 4 | Viewed by 1058

Abstract

Due to much lower initial and operating costs, as well as a great environmental and energy performance, there has been a growing tendency towards the application of solar still desalination systems to deal with water scarcity issues. By taking advantage of higher investments and providing incentives to policy makers, the application could be even broader. In order to convince the policy makers and investors, it is important to provide a clear and realistic overview of the technical, economic, and environmental viability of solar stills, and several studies have evaluated them from different viewpoints. Nonetheless, the economic and environmental factors have uncertainties, which have not been taken into account. Therefore, this study uses the Monte Carlo approach to consider the effects of the uncertainty of inflation and discount rates, in addition to emission factors, on the system’s techno-enviro-economic viability. The study is performed by covering cost per liter (CPL) and the annual saving of CO₂ (SCO₂) as the most important key techno-economic and environmental indicators of the system. The results show that the best probability distribution functions for inflation, discount, and emission factors are normal, log-normal, and their summation, respectively. Furthermore, both SCO₂ and CPL are found to have considerable uncertainty. The former has a variation ranging from 317.7 to 427.9 g, while the corresponding values for the latter are 0.0212 to 0.0270 $ · L⁻¹, respectively. With the amounts of 0.1716 and 0.1727, the values of 378.9 g and 0.0245 $ · L⁻¹ are the values with the highest chance of occurrence for SCO₂, as well as for CPL, respectively. Full article

(This article belongs to the Special Issue Selected Papers from the 16th Conference 'Air, Heat and Energy')

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