The air-conditioning energy savings achieved by application of time-predicted driven night ventilation

Todorović, Maja N.

doi:10.5937/fmet1402161t

Cited by 4 publications

(4 citation statements)

References 3 publications

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“…[v0] -Heating It is clear that for the analyzed climatic conditions in the summer period, the construction of the Trombe wall must have adequate protection against unwanted thermal gain and direct sunshine. This can be accomplished by applying overhangs or by introducing of elements of shaded exterior glazing in combination with natural ventilation and passive cooling [25][26][27]. Figure 5 shows the percentage ratio of energy savings using Trombe wall for all analyzed variants and for different thickness of thermal mass relative to the reference model (without Trombe wall).…”

Section: Resultsmentioning

confidence: 99%

Improving thermal stability and reduction of energy consumption by implementing Trombe wall construction in the process of building design: The Serbia region

Bogdanović¹,

Randjelovic²,

Vasov³

et al. 2018

Therm sci

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Original scientific paper https://doi.org/10.2298/TSCI180308167B This paper analyzes the impact of Trombe wall construction on heating and cooling demands of building with form (rectangular single-store building of about one hundred square meters area) which is common for individual residential buildings in the Republic of Serbia. Trombe wall, as a representative of a passive solar design, was installed on the south wall of the building. Model of the building was made in the Google SketchUp software, while the results of energy performance were obtained using EnergyPlus and jEplus. Parameters of thermal comfort and climatic data for the area of city of Belgrade, Republic of Serbia, were taken into account. Coverage of the south façade was varied, as well as the thickness of the thermal mass and orientation. Energy consumption of the object is discussed, based on obtained results of the analysis. According to comparative analysis of the above mentioned models it can be concluded that the application of the Trombe wall structure on south side may lead to savings of 33% on heating, but also the higher energy consumption for cooling. Total energy consumption on an annual basis is reduced by using this system.

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Section: Resultsmentioning

confidence: 99%

Improving thermal stability and reduction of energy consumption by implementing Trombe wall construction in the process of building design: The Serbia region

Bogdanović¹,

Randjelovic²,

Vasov³

et al. 2018

Therm sci

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“…Psychrometric chart was developed by a German engineer, Richard Mollier in the early 1900s (Todorovic, 2014). This is a graph (Figure 2) that represents the properties of moist air from the point of view of the dry bulb, wet-bulb temperature, relative humidity, humidity ratio, and enthalpy.…”

Section: Psychrometric Chartmentioning

confidence: 99%

Review on low‐temperature heat pump drying applications in food industry: Cooling with dehumidification drying method

Uthpala

Navaratne

Thibbotuwawa

2020

J Food Process Engineering

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Moisture content of food material is a key factor influencing the quality of storage and extending the quality of a food product. Manufacturers develop new technologies to process sensitive food materials to supply new products with improved properties and high quality. The process in which the air is cooled sensibly while the moisture is removed from food is called cooling with dehumidification process. The system fundamentally acts as a heat pump, which pumps the heat from the dehumidified air to a different air stream in another area, with the aid of a refrigerant gas to carry the heat. This article reviews the potential of low-temperature heat pump dehumidifier drying used in the food industry. Moreover, this describes the principle of cooling with dehumidification (CWD) process, the importance of studying psychrometric charts to understand CWD process, measures used in identify energy efficiency, comparison of this method over common dryers, applications, advantages and limitations of the CWD drying method. Practical applications Multiple measures have been taken to increase the drying efficiency of convection drying, especially by the application of cooling with dehumidified techniques. This drying technique has comparably higher energy efficiency, better and consistent product quality and the ability to control drying temperature and humidity over other conventional methods. Low-temperature heat pump dryers are used increasingly applications in the food industry for the drying of grains, fruits, vegetables, herbs, spices, fish, meat, pet foods, and other heat-sensitive food products in several countries. 1 | INTRODUCTION Drying is a unit operation that has been applied in different industries including food industry since ancient times (Hall, 2007; Hepbasli, Colak, Hancioglu, Icier, & Erbay, 2010). Drying preserves the product by removing some amount of water in the material, while freezing reduces its temperature below the freezing point of water. There are three ways to eliminate moisture from the air: by cooling it to condense water vapor, by increasing the total pressure which leads condensation and passing the air over a desiccant, which pulls moisture from the air through differences in vapor pressures (Dai

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“…It is assumed that every element is homogeneous part of the construction envelope and that a one-dimensional problem assumption is valid. Unsteady state heat transfer through windows, regarding solar radiation is based upon the ASHRAE calculation method, [5].…”

Section: Mathematical Modeling Of Different Operating Regimesmentioning

confidence: 99%

A novel laboratory set-up for investigation of intelligent automatic control in complex HVAC systems

Todorović

Ristanović²,

Lazić³

et al. 2016

FME Transaction

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This paper presents a new laboratory setup for the airconditioning operation analysis in the Laboratory for Automatic Control at the Faculty of Mechanical Engineering, University of Belgrade. The new HVAC laboratory is designed to investigate different complex HVAC system working regimes and to provide desired space comfort. The emphasis is specially given to an impact on energy consumption. The laboratory setup is designed to operate in the complex, dynamic regimes, when indoor environment parameters are intensively changed, together with a change of outdoor conditions. In order to minimize energy consumption, a new software and various automatic control algorithms are designed for automatic control of the air handlig unit.

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The air-conditioning energy savings achieved by application of time-predicted driven night ventilation

Cited by 4 publications

References 3 publications

Improving thermal stability and reduction of energy consumption by implementing Trombe wall construction in the process of building design: The Serbia region

Improving thermal stability and reduction of energy consumption by implementing Trombe wall construction in the process of building design: The Serbia region

Review on low‐temperature heat pump drying applications in food industry: Cooling with dehumidification drying method

A novel laboratory set-up for investigation of intelligent automatic control in complex HVAC systems

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