Natural ventilation strategies for indoor thermal comfort in Mediterranean apartments

Spentzou, Eftychia; Cook, Malcolm; Emmitt, Stephen

doi:10.1007/s12273-017-0380-1

Cited by 31 publications

(10 citation statements)

References 29 publications

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“…According to Cândido et al [46] and Spentzou et al [47] suggested that the use of natural ventilation is a strategy for saving energy and creating indoor thermal comfort. The results of this research indicated that during 8:00 a.m.-12:00 p.m., when the average outdoor air temperature is at 29.56 • C, average outdoor relative humidity is at 69.30%, and average outdoor air speed is at 1.53 m/s with the air flowing from the southwest, if all case-study MSCs use natural ventilation alone, the air velocity of 0.03-0.25 m/s within the room will not be able to make the elderly feel comfortable.…”

Section: Discussionmentioning

confidence: 99%

Developing Guidelines for Thermal Comfort and Energy Saving during Hot Season of Multipurpose Senior Centers in Thailand

Panraluk

Sreshthaputra

2019

Sustainability

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In Thailand, many government buildings and facilities are adapted to serve as Multipurpose Senior Centers (MSCs). However, most of them have been used without taking into account of thermal comfort of occupants. The present research aimed to develop guidelines for improving suitable indoor environment for the Thai elderly in hot season and analyze energy use of the 3 case-study MSCs. Both field study and climate-controlled chamber study were conducted. The obtained data were analyzed to develop the equation for predicting the thermal sensation, which would be inputted in the scSTREAM program for analysis purposes. The energy use was evaluated using the DOE-2 program. The results suggested that during 8:00 a.m.–12:00 p.m., natural ventilation should be used together with orbit fans to produce an actual air velocity of 0.64–0.73 m/s. From 12:00 p.m. to 4:00 p.m., air conditioners should set at 26.00–26.50 °C with an actual air velocity of 0.06–0.22 m/s. The results also showed that the developed guidelines could improve the level of thermal comfort from “slightly cool” to “neutral” and reduce energy use in hot season by 16.56% due to the reduction of cooling load and fan operation of air conditioning systems. Moreover, energy consumption in MSCs are also affected by the building parameters. These findings can be applied as guidelines for improving a large number of MSCs in Thailand.

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Section: Discussionmentioning

confidence: 99%

Developing Guidelines for Thermal Comfort and Energy Saving during Hot Season of Multipurpose Senior Centers in Thailand

Panraluk

Sreshthaputra

2019

Sustainability

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“…More recently, lightweight steel-framed (LSF) systems have been attracting interest as these prefabricated modular steel structures are assembled on site, reducing significantly both construction time and costs [29,30]. However, the low thermal mass is one of the most relevant drawbacks of these constructions, giving rise to noteworthy daily temperature oscillations (particularly felt in Mediterranean climates) which, in turn, cause high thermal discomfort [31]. Several strategies can be used to improve the thermal resistance of LSF elements, being the use of phase-change materials (PCMs) one of them.…”

Section: Evolution Of Constructive Solutions and Thermal Comfortmentioning

confidence: 99%

Modeling the Evolution of Construction Solutions in Residential Buildings’ Thermal Comfort

2021

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The evolution of the construction sector over the years has been marked by the replacement of high thermal inertia mass constructions by increasingly lighter solutions that are subject to greater thermal fluctuations and, consequently, thermal discomfort. To minimize these effects, energy demanding space conditioning technologies are implemented, contributing significantly to the sector’s share of global energy consumption. Enhanced constructive solutions involving phase-change materials have been developed to respond to the constructive thermal inertia loss, influencing buildings’ thermal and energy performance. This work aims to model the evolution of the construction over the last decades to understand to what extent constructive characteristics influence the occupants’ thermal comfort. For this purpose, typical and enhanced solutions representing distinct constructive periods were simulated using the EnergyPlus® software through its graphical interface DesignBuilder® and the thermal comfort of the different solutions was evaluated using the adaptive model for thermal comfort EN16798-1. The main results reveal that more restraining regulatory requirements are indeed mitigating thermal discomfort situations. However, overheating phenomena can rise, creating worrying consequences in the short-medium term. Thus, countries with mild climates such as Portugal, must pay special attention to these effects, which may be aggravated by climate change.

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“…Using DTM the performance of the strategies was evaluated for specific occupancy and building operation scenarios. Details of the DTM modelling approach employed are described in Spentzou et al (2018). Outputs of both CFD and DTM studies not previously published, are synthesised here aiming to identify the broad feasibility of selected measures for building energy refurbishments across similar buildings and climates.…”

Section: Simulation Approachmentioning

confidence: 99%

“…air flow at neighbourhood scale) under all prevailing wind directions and speeds enabled derivation of pressure input parameters for the openings of the indoor building environment CFD models, which determined indoor ventilation characteristics, in (Spentzou, Cook, & Emmitt, 2019). DTM was used to evaluate thermal comfort and passive cooling performance over annual cycles at one-hour intervals, presented in (Spentzou, Cook, & Emmitt, 2018). The objective of this paper is to synthesise those findings and establish low energy refurbishment design guidance for use by researchers and practitioners.…”

Section: Introductionmentioning

confidence: 99%

Low-energy cooling and ventilation refurbishments for buildings in a Mediterranean climate

Spentzou

Cook

Emmitt³

2021

Architectural Engineering and Design Management

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In view of the ageing domestic building stock and increasing reliance on fossil fuels for cooling and ventilation of buildings, there is an urgent need for improved design knowledge and sustainable measures such as natural ventilation and passive cooling to mitigate climate change and future proof the built environment. This paper forms an appraisal of a range of low-energy refurbishment measures, i.e. building design alterations and passive systems, which were employed and evaluated in an apartment building in Greece. The applicability of these in domestic buildings in hot climates is assessed and their design implications evaluated. Implementation of wind-catchers, dynamic façades, and evaporative cooling had the highest ventilation and cooling potential, while improvements of the interior layout to allow for new airflow paths could provide further cooling to spaces and solutions to safety.

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Natural ventilation strategies for indoor thermal comfort in Mediterranean apartments

Cited by 31 publications

References 29 publications

Developing Guidelines for Thermal Comfort and Energy Saving during Hot Season of Multipurpose Senior Centers in Thailand

Developing Guidelines for Thermal Comfort and Energy Saving during Hot Season of Multipurpose Senior Centers in Thailand

Modeling the Evolution of Construction Solutions in Residential Buildings’ Thermal Comfort

Low-energy cooling and ventilation refurbishments for buildings in a Mediterranean climate

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