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Applied Sciences
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Recent Advances in Cooling and Heat Recovery Systems for Ventilation...
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Recent Advances in Cooling and Heat Recovery Systems for Ventilation and Air Conditioning

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Energy Science and Technology".

Deadline for manuscript submissions: closed (30 November 2021) | Viewed by 3175

Special Issue Editor

Prof. Dr. Demis Pandelidis

E-Mail Website
Guest Editor
Department of Mechanical and Power Engineering, Wroclaw University of Technology, 50-370 Wroclaw, Poland
Interests: renewable energy; new energy technologies; heat and mass transfer; numerical modeling; fluid mechanics; engineering thermodynamics; heating ventilation and air conditioning systems
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Ventilation and air conditioning systems are one of the major energy consumers in modern buildings. The world needs radical change in the energy efficiency of ventilation and AC technologies, one that can effectively offset global energy demand while improving the quality of life and health of the users. The growing need for energy to provide comfortable indoor conditions has become a global concern. Due to this, new and innovative technologies need to be developed in order to face this challenge. This Special Issue is dedicated to new, advanced solutions in all of the fields of heat recovery in ventilation and air conditioning systems which can significantly improve the energy efficiency of buildings.

This Special Issue is open to all contributors in the field of heat recovery, ventilation, and air conditioning systems. We invite submissions of novel and original papers and reviews to this Special Issue that extend upon and advance our scientific/technical understanding in areas that include but are not limited to:

  • Renewable energy;
  • Building simulation;
  • Energy savings;
  • Heat recovery;
  • Ventilation;
  • Air conditioning;
  • Energy efficiency;
  • Smart systems;
  • Cooling;
  • Cooling towers;
  • Thermal storage;
  • Evaporative cooling;
  • Desiccant systems;
  • Adsorption;
  • Absorption;
  • Advanced buildings.

Dr. Demis Pandelidis
Guest Editor

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. Applied Sciences 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 2400 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

  • renewable energy
  • building simulation
  • energy savings
  • heat recovery
  • ventilation
  • air conditioning
  • energy efficiency
  • smart systems
  • cooling
  • cooling towers
  • thermal storage
  • evaporative cooling
  • desiccant systems
  • adsorption
  • absorption
  • advanced buildings

Published Papers (2 papers)

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Research

17 pages, 401 KiB  
Article
An α-Model Parametrization Algorithm for Optimization with Differential-Algebraic Equations
by Paweł Drąg
Appl. Sci. 2022, 12(2), 890; https://0-doi-org.brum.beds.ac.uk/10.3390/app12020890 - 16 Jan 2022
Cited by 1 | Viewed by 1098
Abstract
An optimization task with nonlinear differential-algebraic equations (DAEs) was approached. In special cases in heat and mass transfer engineering, a classical direct shooting approach cannot provide a solution of the DAE system, even in a relatively small range. Moreover, available computational procedures for [...] Read more.
An optimization task with nonlinear differential-algebraic equations (DAEs) was approached. In special cases in heat and mass transfer engineering, a classical direct shooting approach cannot provide a solution of the DAE system, even in a relatively small range. Moreover, available computational procedures for numerical optimization, as well as differential- algebraic systems solvers are characterized by their limitations, such as the problem scale, for which the algorithms can work efficiently, and requirements for appropriate initial conditions. Therefore, an αDAE model optimization algorithm based on an α-model parametrization approach was designed and implemented. The main steps of the proposed methodology are: (1) task discretization by a multiple-shooting approach, (2) the design of an α-parametrized system of the differential-algebraic model, and (3) the numerical optimization of the α-parametrized system. The computations can be performed by a chosen iterative optimization algorithm, which can cooperate with an outer numerical procedure for solving DAE systems. The implemented algorithm was applied to solve a counter-flow exchanger design task, which was modeled by the highly nonlinear differential-algebraic equations. Finally, the new approach enabled the numerical simulations for the higher values of parameters denoting the rate of changes in the state variables of the system. The new approach can carry out accurate simulation tests for systems operating in a wide range of configurations and created from new materials. Full article
(This article belongs to the Special Issue Recent Advances in Cooling and Heat Recovery Systems for Ventilation and Air Conditioning)
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25 pages, 10316 KiB  
Article
Experimental Comparison of Heating Emitters in Mediterranean Climate
by Rosa Francesca De Masi, Silvia Ruggiero and Giuseppe Peter Vanoli
Appl. Sci. 2021, 11(12), 5462; https://0-doi-org.brum.beds.ac.uk/10.3390/app11125462 - 12 Jun 2021
Viewed by 1386
Abstract
The need to increase the level of quality of indoor environments requires an extremely accurate definition of the microclimatic requisites to guarantee, in the spaces where people live and work, global and local conditions of comfort, considering, at the same time, the aspects [...] Read more.
The need to increase the level of quality of indoor environments requires an extremely accurate definition of the microclimatic requisites to guarantee, in the spaces where people live and work, global and local conditions of comfort, considering, at the same time, the aspects related to energy savings and environmental sustainability. In this framework, the paper proposes a comparison of indoor parameters for three different types of heating emitters: fan-coils, baseboards heaters, and radiant floor systems. The comparison is based on seasonal monitoring performed in a test-room located in a Mediterranean climate; it can simulate an insulated room with office usage. The proposed indices demonstrate that the floor radiant system is characterized by lower horizontal and vertical differences in air temperature distribution that can guarantee more comfortable conditions and lower heat losses. The operative temperature is often higher than the neutral point; thus, management with a lower set-point temperature should be experimented with in further studies. More generally, the introduced method could help designers to choose the proper system and management strategy with the dual purpose to select a comfortable but energy savings-oriented operating temperature. Full article
(This article belongs to the Special Issue Recent Advances in Cooling and Heat Recovery Systems for Ventilation and Air Conditioning)
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