The Impact of Increased Airflow Rates on Indoor Temperatures of Passive House in The Netherlands

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

The Impact of Increased Airflow Rates on Indoor Temperatures of Passive House in The Netherlands

Popis výsledku v původním jazyce

The increasing number of highly insulated and air tight buildings leads to an immediate concern of the possibility of overheating indoors and related comfort and health issues. This is already possible for a temperate climate as found in the Netherlands. In this context ventilative cooling may present an effective and low-energy solution to avoid, or at least reduce this problem. Ventilation has always been used with the purpose of improving air quality and thermal comfort indoors, however it is still necessary to address this phenomenon with a more systematic approach. This research studies the ventilative cooling process in one of the Passive House renovated dwellings in the Netherlands. The Passive House was modelled as a seven-zone model in Trnsys and the impact of increasing air flow rates on the indoor temperatures has been simulated. The most overheated zone was chosen to be analysed. The ventilation rates were set in accordance with the ventilation system available in the house. Three possible ventilation rates were simulated and the results were compared with the indoor temperatures measured in the house. The occupancy was estimated in accordance with CO2 levels measured inside the studied zone and the other heat gains were calibrated based on indoor temperature during winter time. Results indicate that indoor temperatures can be considerably lowered by making use of constant outdoor flow rates during the warm season. However, alternative solutions such as shading devices and passive night cooling might be considered during very warm days, when outdoor temperatures rise above 30 °C. The research aims to provide a next step towards a more effective and predictable use of ventilation techniques as a way to achieve a more comfortable and healthier indoor environment. The work is positioned within the context of IEA Annex 62 Ventilative cooling.

Název v anglickém jazyce

The Impact of Increased Airflow Rates on Indoor Temperatures of Passive House in The Netherlands

Popis výsledku anglicky

The increasing number of highly insulated and air tight buildings leads to an immediate concern of the possibility of overheating indoors and related comfort and health issues. This is already possible for a temperate climate as found in the Netherlands. In this context ventilative cooling may present an effective and low-energy solution to avoid, or at least reduce this problem. Ventilation has always been used with the purpose of improving air quality and thermal comfort indoors, however it is still necessary to address this phenomenon with a more systematic approach. This research studies the ventilative cooling process in one of the Passive House renovated dwellings in the Netherlands. The Passive House was modelled as a seven-zone model in Trnsys and the impact of increasing air flow rates on the indoor temperatures has been simulated. The most overheated zone was chosen to be analysed. The ventilation rates were set in accordance with the ventilation system available in the house. Three possible ventilation rates were simulated and the results were compared with the indoor temperatures measured in the house. The occupancy was estimated in accordance with CO2 levels measured inside the studied zone and the other heat gains were calibrated based on indoor temperature during winter time. Results indicate that indoor temperatures can be considerably lowered by making use of constant outdoor flow rates during the warm season. However, alternative solutions such as shading devices and passive night cooling might be considered during very warm days, when outdoor temperatures rise above 30 °C. The research aims to provide a next step towards a more effective and predictable use of ventilation techniques as a way to achieve a more comfortable and healthier indoor environment. The work is positioned within the context of IEA Annex 62 Ventilative cooling.

Druh

D - Stať ve sborníku

CEP obor

JE - Nejaderná energetika, spotřeba a užití energie

OECD FORD obor

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Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Healthy Buildings 2015 Europe Conference proceedings

ISBN

978-90-386-3889-8

ISSN

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e-ISSN

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Počet stran výsledku

7

Strana od-do

-1

Název nakladatele

TU Eindhoven

Místo vydání

Eindhoven

Místo konání akce

Eindhoven

Datum konání akce

18. 5. 2015

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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