Reconfiguring TRNSYS Type 158 for direct fired water heaters: Model verification and simulation performance analysis

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F24%3A00376506" target="_blank" >RIV/68407700:21220/24:00376506 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21720/24:00376506

Výsledek na webu

<a href="https://doi.org/10.1016/j.enbuild.2024.114692" target="_blank" >https://doi.org/10.1016/j.enbuild.2024.114692</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.enbuild.2024.114692" target="_blank" >10.1016/j.enbuild.2024.114692</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Reconfiguring TRNSYS Type 158 for direct fired water heaters: Model verification and simulation performance analysis

Popis výsledku v původním jazyce

This article presents novel insights into direct-fired water heaters with a storage tank, making a significant contribution to the scientific community. The paper has two main objectives. Firstly, it examines the possibility of reconfiguring the standard mathematical model Type 158, originally designed for indirect heated storage tanks in the TRNSYS database, for use with direct heated storage tanks. The study demonstrates that the reconfigured Type 158 model produces deviations in water temperature during charging, ranging from -2.3 % to + 0.80 % compared to the manufacturer’s technical specifications. A detailed procedure for reconfiguring this model is provided, filling a gap in existing literature. Secondly, the paper uses the reconfigured model to analyse the usage of direct water heaters for dual purposes: space heating and hot water supply. System simulations in three realistic installation scenarios—single-family house, hand car wash, and apartment building—validate the findings. The first scenario evaluates the heater at very low load, the second assesses its performance with low space heating and high hot water demand, and the third highlights potential shortcomings in buildings with high space heating and hot water demand. These simulations provide valuable data on the heater’s ability to meet energy supply needs in different contexts, demonstrating its practicality and effectiveness.

Název v anglickém jazyce

Reconfiguring TRNSYS Type 158 for direct fired water heaters: Model verification and simulation performance analysis

Popis výsledku anglicky

This article presents novel insights into direct-fired water heaters with a storage tank, making a significant contribution to the scientific community. The paper has two main objectives. Firstly, it examines the possibility of reconfiguring the standard mathematical model Type 158, originally designed for indirect heated storage tanks in the TRNSYS database, for use with direct heated storage tanks. The study demonstrates that the reconfigured Type 158 model produces deviations in water temperature during charging, ranging from -2.3 % to + 0.80 % compared to the manufacturer’s technical specifications. A detailed procedure for reconfiguring this model is provided, filling a gap in existing literature. Secondly, the paper uses the reconfigured model to analyse the usage of direct water heaters for dual purposes: space heating and hot water supply. System simulations in three realistic installation scenarios—single-family house, hand car wash, and apartment building—validate the findings. The first scenario evaluates the heater at very low load, the second assesses its performance with low space heating and high hot water demand, and the third highlights potential shortcomings in buildings with high space heating and hot water demand. These simulations provide valuable data on the heater’s ability to meet energy supply needs in different contexts, demonstrating its practicality and effectiveness.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20101 - Civil engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Energy and Buildings

ISSN

0378-7788

e-ISSN

1872-6178

Svazek periodika

322

Číslo periodika v rámci svazku

-

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

18

Strana od-do

—

Kód UT WoS článku

001301755200001

EID výsledku v databázi Scopus

2-s2.0-85201908535