Heat storage efficiency and effective thermal output: Indicators of thermal response and output of radiant heating and cooling systems

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F20%3APU137991" target="_blank" >RIV/00216305:26110/20:PU137991 - isvavai.cz</a>

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S037877882031937X" target="_blank" >https://www.sciencedirect.com/science/article/pii/S037877882031937X</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.enbuild.2020.110524" target="_blank" >10.1016/j.enbuild.2020.110524</a>

Result language

angličtina

Original language name

Heat storage efficiency and effective thermal output: Indicators of thermal response and output of radiant heating and cooling systems

Original language description

An alternative indicator of thermal response of radiant heating and cooling systems called heat storage efficiency (HSE) has been tested. The heat storage efficiency was compared with established indicators represented by the time constant tau(63), response time tau(95), and thermal energy stored (TES). The comparison was performed for three wall cooling systems with various combinations of pipe location, configuration of material layers, and materials of the thermal core. Considering the whole response curve (HSE) instead of focusing on one specific point on the curve (tau(63), tau(95)) allowed comparing the thermal response of complex systems by a single value. It also permitted predicting thermal response consistently regardless of the system and core material. Thermal energy stored predicted the thermal response of certain systems, but it may not be suitable for comparing the thermal response of radiant systems with different thermal admittance. Besides, a novel indicator of thermal output called effective thermal output (ETO) has been proposed. The effective thermal output considers both the steady-state thermal performance represented by the nominal thermal output and dynamic thermal performance represented by the heat storage efficiency. For thermally active building systems (TABS), effective thermal output was up to 57% lower than the nominal thermal output. (C) 2020 Elsevier B.V. All rights reserved.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20101 - Civil engineering

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

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

Publication year

2020

Confidentiality

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

Name of the periodical

ENERGY AND BUILDINGS

ISSN

0378-7788

e-ISSN

1872-6178

Volume of the periodical

229

Issue of the periodical within the volume

1

Country of publishing house

CH - SWITZERLAND

Number of pages

14

Pages from-to

1-14

UT code for WoS article

000582959200026

EID of the result in the Scopus database

2-s2.0-85092260033