Simulation of indoor temperature and humidity conditions including hygrothermal interactions with the building envelope

Künzel, Hartwig M.; Holm, Andreas; Zirkelbach, Daniel; Karagiozis, Achilles

doi:10.1016/j.solener.2004.03.002

Cited by 137 publications

(68 citation statements)

References 2 publications

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“…(3) is non-linear: vapour permeability  k and moisture capacity  k are highly dependent on humidity. Solving the system of equations can only be performed numerically consequently: while being applied for simple cases [16,24,25,26,27], general application remains hardy. The complexity of numerical simulation with multiple, multimaterial and/or multidimensional interior elements yields a far too high computational load.…”

Section: Moisture Balances For Room Air and Enclosurementioning

confidence: 99%

“…Quantitative assessment of interior moisture buffering requires simulation of the interior humidity, including the moisture exchange with interior elements. Such simulations are very complicated however: while currently being applied for single rooms with simple finishes [16,24,25,26,27], full simulation of the moisture storage and transport in interior elements remains unrealistic. This would require a detailed knowledge of the geometry and the material properties of all indoor elements -info that is often unavailable -, and it would lead to unacceptable calculation times.…”

Section: Introductionmentioning

confidence: 99%

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Qualitative and quantitative assessment of interior moisture buffering by enclosures

Janssen

Roels

2009

Energy and Buildings

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Section: Moisture Balances For Room Air and Enclosurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Qualitative and quantitative assessment of interior moisture buffering by enclosures

Janssen

Roels

2009

Energy and Buildings

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“…They mostly discuss on the whole building envelopes [9], [10], indoor comfort with regard to relative humidity [9], indoor temperature and indoor comfort in buildings other than apartments [11]- [15]. A study specific to the indoor temperature in apartment buildings is important as vertical living is now a trend where the reference of effective night cooling is hardly applicable.…”

Section: Theoretical Approachmentioning

confidence: 99%

“…A study specific to the indoor temperature in apartment buildings is important as vertical living is now a trend where the reference of effective night cooling is hardly applicable. In addition, humans are more sensitive to variations in temperature than those of relative humidity [9]. Surveys of occupant's comfort temperature are also important, especially for an area in the tropics, where current standards are considered weak [16].…”

Section: Theoretical Approachmentioning

confidence: 99%

Wall Cladding Effects and Occupants’ Perception of Indoor Temperature of Typical Student Apartments in Surabaya, Indonesia

Mediastika

Hariyono

2017

Environmental and Climate Technologies

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-Three types of apartment claddings in Surabaya, Indonesia were studied to analyze their effect into bedroom temperature. They were glass windows in a niche, glass door in a balcony, and glass windows on a plain wall with glass door in a balcony. On-site temperature measurement was recorded and complemented with questionnaire surveys of occupants' perception regarding room temperature. The study showed that an apartment cladding with the largest proportion of opaque material combined with a balcony offered an indoor temperature of up to 9 °C lower than the outdoor compared to the other cladding types. Nevertheless, 72 % of occupants participated in this study, who use air conditioners during night time, including one with the cladding with the largest temperature difference claimed that the indoor temperature before air-conditioners was still too warm, which triggered air-conditioners initial time more than 10 minutes to achieve the desired indoor temperature. It indicated that the opaque material time lag played a significant role in heating the room during night time when the air-conditioner is about to be operated.

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“…Energyefficient houses protect the planet and offers greater fire safety. Energy efficient houses experience less condensation, which protects framing, windows and finish materials [Kunzel et al, 2003]. …”

Section: Advantages Of Energy Efficient Design Featuresmentioning

confidence: 99%

The Behaviour of Low-Cost Passive Solar Energy Efficient House, South Africa

Makaka¹,

Meyer²,

Mamphweli³

et al. 2012

Solar Power

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IntroductionA comfortable indoor environment is one of the main requirements of a well-designed house yet most of the low-cost houses are characterised by poor thermal performance. Mainly poor design, sub-standard building materials and poor craftsmanship contribute to the poor performance. The inclusion of energy-efficient passive solar design features in the construction of affordable housing offers many benefits which include; reduced operating costs, reduced energy related greenhouse emissions, and reduced need for expensive heating and cooling of the house and above all, improved comfort. The basic natural processes used in passive solar energy are the thermal energy flows associated with radiation, conduction, and natural convection. When solar radiation strikes a building, the building materials can reflect, transmit, or absorb the solar radiation [Makaka, Meyer;2008]. Additionally, solar energy causes air movement that can be predictable in designed spaces. These basic responses to solar heat lead to design elements, material choices and placements that can provide heating and cooling effects in buildings. The thermal state is determined by the difference of the sums of the heat gains and heat losses. Bricks form the about 80% of the building materials and their physical properties play a role in determining the indoor thermal behaviour. These properties include thermal conductivity, water absorption, sound dumping and compressive strength. The addition of fly ash to clay in a defined ratio can really improves these properties and at same time reducing the manufacturing process. South Africa produces about 90 tones of fly ash annually posing a huge problem on the disposal management of fly ash. The use of fly ash in the manufacturing of bricks is one of the ways of the management of this waste.The aim of this chapter is to establish the impact of passive solar design and building materials properties on the indoor temperature and to establish a statistical correlation of the indoor temperature with outdoor weather parameters [Makaka, Meyer;2008]. It seeks to develop an understanding of the criteria used for the selection of an appropriate passive solar architecture that is sensitive to both energy use and climatic conditions, i.e., it gives the details of the design and the selection of building materials used, energy efficient design optimization using ECOTECT building design software and ventilation efficiency. computer based prediction models are complicated for an average trained builder this results in the construction of poor thermal performing buildings. In this chapter a statistical method is used to develop a simple indoor temperature predicting model. Principles of passive solar designThe building design phase integrates the site, floor plan, building orientation, landscaping, materials, mechanical systems and architectural characteristics. The design of an energyefficient house requires a careful analysis and evaluation of all proposed design alternatives throughout the different design stages...

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Simulation of indoor temperature and humidity conditions including hygrothermal interactions with the building envelope

Cited by 137 publications

References 2 publications

Qualitative and quantitative assessment of interior moisture buffering by enclosures

Qualitative and quantitative assessment of interior moisture buffering by enclosures

Wall Cladding Effects and Occupants’ Perception of Indoor Temperature of Typical Student Apartments in Surabaya, Indonesia

The Behaviour of Low-Cost Passive Solar Energy Efficient House, South Africa

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