The possibilities and limitations of using radiant wall cooling in new and retrofitted existing buildings

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F20%3APU133721" target="_blank" >RIV/00216305:26110/20:PU133721 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S1359431119330388?dgcid=coauthor" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1359431119330388?dgcid=coauthor</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.applthermaleng.2019.114490" target="_blank" >10.1016/j.applthermaleng.2019.114490</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The possibilities and limitations of using radiant wall cooling in new and retrofitted existing buildings

Popis výsledku v původním jazyce

The use of radiant wall cooling presents a potentially feasible solution to cover the cooling demand of buildings due to its suitability for combination with renewable energy sources at relatively high sensible cooling capacity. We define and directly compare four types of wall cooling systems, from which three are potentially suitable for building retrofit. Besides using established performance indicators, an indicator called heat transfer efficiency is introduced to allow detecting differences in the thermal dynamics of various systems even in cases when their response time, defined as τ95, is alike. Systems with pipes underneath the surface provide higher cooling output and are sensitive to pipe spacing. Systems with pipes embedded in the core allow thermal storage and are sensitive to insulation thickness. Thermal conductivity of the core material proved to be an important parameter to consider except for the system with the pipes separated from the core by thermal insulation. The systeḿs suitability depends on the requirements such as avoiding interventions in the interior, exploiting thermal storage, or providing fast thermal dynamics. It is shown how various configurations of pipe location, material layers and thermal conductivity of the core allow compromising between the different performance indicators to design a system with the desired characteristics.

Název v anglickém jazyce

The possibilities and limitations of using radiant wall cooling in new and retrofitted existing buildings

Popis výsledku anglicky

The use of radiant wall cooling presents a potentially feasible solution to cover the cooling demand of buildings due to its suitability for combination with renewable energy sources at relatively high sensible cooling capacity. We define and directly compare four types of wall cooling systems, from which three are potentially suitable for building retrofit. Besides using established performance indicators, an indicator called heat transfer efficiency is introduced to allow detecting differences in the thermal dynamics of various systems even in cases when their response time, defined as τ95, is alike. Systems with pipes underneath the surface provide higher cooling output and are sensitive to pipe spacing. Systems with pipes embedded in the core allow thermal storage and are sensitive to insulation thickness. Thermal conductivity of the core material proved to be an important parameter to consider except for the system with the pipes separated from the core by thermal insulation. The systeḿs suitability depends on the requirements such as avoiding interventions in the interior, exploiting thermal storage, or providing fast thermal dynamics. It is shown how various configurations of pipe location, material layers and thermal conductivity of the core allow compromising between the different performance indicators to design a system with the desired characteristics.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20101 - Civil engineering

Projekt

<a href="/cs/project/TN01000056" target="_blank" >TN01000056: Centrum pokročilých materiálů a efektivních budov</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Applied Thermal Engineering

ISSN

1359-4311

e-ISSN

—

Svazek periodika

neuveden

Číslo periodika v rámci svazku

164

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

15

Strana od-do

1-15

Kód UT WoS článku

000498754900060

EID výsledku v databázi Scopus

2-s2.0-85073550921