Energy saving potential of glazed space: Sensitivity analysis

Hilliaho, Kimmo; Mäkitalo, Eerik; Lahdensivu, Jukka

doi:10.1016/j.enbuild.2015.04.016

Cited by 50 publications

(24 citation statements)

References 11 publications

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“…Ai et al [2] state that the presence of a balcony in architecture has a series of effects on the environmental behavior of a building, mainly in ventilation and natural illumination; in the effect of shading of facades; in thermal comfort and transport of pollutants. The same authors also affirm that one of the properties of balconies is to improve the uniformity of air almost without exception higher than outdoor air temperature [3,6,7]. Hilliaho et al [8] obtained a mean temperature of 2.0 °C and 5.0 °C higher than outdoor temperature in the field measurements carried out on balconies in Finland without and with retractable glass panels of their openings, respectively.…”

Section: Introduction mentioning

confidence: 77%

Investigation of the Effects of Glazed Balconies upon Thermal Comfort in Hot Tropical Region

Pagel¹,

Rodrigues²,

Alvarez³

et al. 2019

JCEA

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The balcony is responsible to a series of effects on the environmental behavior of a building, mainly in relation of thermal comfort and air distribution to their indoor spaces. Currently a very common practice in several metropolitan areas is the closing with retractable glass panels in balcony openings. This work analyzed the effects of glazed balconies upon thermal comfort in a hot tropical region. Environmental parameters were carried out in a flat alternating the conditions of retractable glass panels to balconies. Thermal simulations were performed considering closing or not the glass door that divides the balcony room; the building material used on the balcony sill; and the use of curtains or shading devices. The results show the maximum mean hourly temperatures recorded on the balcony during the period when the retractable glass panels were closed, reaching peaks between 31.7 and 39.2 °C, above the comfort range recommended by ASHRAE 55. All situations simulated show the thermal discomfort prevails in the use of the closed glass panels reaching DhTD of 94.55 °C/day. Thus, this practice of using most of the closed retractable glass panels in the balconies presents disadvantages and inefficiencies especially in hot and humid tropical climate regions.

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Section: Introduction mentioning

confidence: 77%

Investigation of the Effects of Glazed Balconies upon Thermal Comfort in Hot Tropical Region

Pagel¹,

Rodrigues²,

Alvarez³

et al. 2019

JCEA

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“…They concluded that the maximum impact on energy consumption reduction was realized by applying a sunspace with 30% ventilation openings and moderate quality glazing (shading coefficient of glazing is 0.5). Hilliaho et al [15] used the IDA-ICE 4.6.1 software to study the impact of different types of glazed balconies on buildings' energy consumption in northern climatic conditions. The results showed that the energy saving in northern climatic conditions was greater than in Central Europe.…”

Section: Introductionmentioning

confidence: 99%

Study on Heat Utilization in an Attached Sunspace in a House with a Central Heating, Ventilation, and Air Conditioning System

Fukuda

Lee

et al. 2018

Energies

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Based on numerical simulations, the heating load reduction effect of an attached sunspace in winter was determined, and the effective heat utilization method and sunspace design were explored. In this paper, we studied the heating load reduction effect using heat from the sunspace and temperature fluctuation of each room at the time of heat use from the sunspace (sending air from the sunspace to the heating, ventilation, and air conditioning (HVAC) machine room and taking the air to the adjacent rooms). In the case of the all-day HVAC system, it was confirmed that a larger capacity of sunspace and not sending air from the sunspace to the adjacent room demonstrated a better heating-load reduction effect. Compared with Model Iw (a house with a window on the exterior of the sunspace opened to external air), Model I (a house with an attached sunspace on the second floor) could save approximately 41% of the total energy. Model II (a house with the attached sunspace both on the first and second floors) could save approximately 84% of the total energy. Sending heat from the sunspace to the adjacent room led to temperature increases in the adjacent rooms. However, if the construction plan is to have the sunspace only on the second floor, the house should be carefully designed, for example, by placing a living room on the second floor.

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“…Simulations have been performed from northern climates to the Mediterranean area reaching nZEB performances with traditional thermal insulation coating combined with controlled mechanical ventilation (VMC). Many references in the literature have also confirmed this potential energy reduction [11]. Specific calculations have been performed for the three cases of the research project by using a monthly-based method according to the EN 13,790 standards ( Figure 4).…”

Section: Energy Requirementsmentioning

confidence: 99%

“…See section of the GET system in Figure 5. These solutions have been designed and analyzed in a large set of existing buildings [11]. Fotopoulou et al [13] investigated an individual residential unit in a set of various hypotheses for targeted energy retrofitting interventions with different options both individually and in combination.…”

Section: Energy Requirementsmentioning

confidence: 99%

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A European Project for Safer and Energy Efficient Buildings: Pro-GET-onE (Proactive Synergy of inteGrated Efficient Technologies on Buildings’ Envelopes)

et al. 2018

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Abstract:The paper describes the progress of the four-year European project Pro-GET-onE currently under implementation. This research and innovation project is based on the assumption that greater efficiency, attractiveness, and marketable renovation can only be achieved through an integrated set of technologies where all the different requirements (energy, structural, functional) are optimally managed. Thus, the project focuses on the unprecedented integration of different technologies to achieve a multi-benefit approach that is provided by a closer integration between energy and non-energy related benefits. The project aims to combine different pre-fabricated elements in a unified and integrated system resulting in a higher performance in terms of energy requirements, structural safety, and social sustainability. The project attempts to achieve this goal through the introduction of innovative solutions for building envelopes to optimally combine the climatic, structural, and functional aspects through a significant architectural transformation and a substantial increase of the real estate value of the buildings. This augmented value obtained through the application of the inteGrated Efficient Technologies (GETs) is extremely important when considering the necessity of creating an innovative and attractive market in the energy renovation of existing buildings towards the target of nearly zero energy buildings (nZEBs).

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Energy saving potential of glazed space: Sensitivity analysis

Cited by 50 publications

References 11 publications

Investigation of the Effects of Glazed Balconies upon Thermal Comfort in Hot Tropical Region

Investigation of the Effects of Glazed Balconies upon Thermal Comfort in Hot Tropical Region

Study on Heat Utilization in an Attached Sunspace in a House with a Central Heating, Ventilation, and Air Conditioning System

A European Project for Safer and Energy Efficient Buildings: Pro-GET-onE (Proactive Synergy of inteGrated Efficient Technologies on Buildings’ Envelopes)

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