Analysis and Comparison of Some Low-Temperature Heat Sources for Heat Pumps

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41310%2F19%3A79182" target="_blank" >RIV/60460709:41310/19:79182 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.mdpi.com/1996-1073/12/10/1853/htm" target="_blank" >https://www.mdpi.com/1996-1073/12/10/1853/htm</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/en12101853" target="_blank" >10.3390/en12101853</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Analysis and Comparison of Some Low-Temperature Heat Sources for Heat Pumps

Popis výsledku v původním jazyce

The efficiency of a heat pump energy system is significantly influenced by its low-temperature heat source. This paper presents the results of operational monitoring, analysis and comparison of heat transfer fluid temperatures, outputs and extracted energies at the most widely used low temperature heat sources within 218 days of a heating period. The monitoring involved horizontal ground heat exchangers (HGHEs) of linear and Slinky type, vertical ground heat exchangers (VGHEs) with single and double U-tube exchanger as well as the ambient air. The results of the verification indicated that it was not possible to specify clearly the most advantageous low-temperature heat source that meets the requirements of the efficiency of the heat pump operation. The highest average heat transfer fluid temperatures were achieved at linear HGHE (8,13 +/- 4,50 degrees C) and double U-tube VGHE (8,13 +/- 3,12 degrees C). The highest average specific heat output 59,97 +/- 41,80 W/m(2) and specific energy extracted fro

Název v anglickém jazyce

Analysis and Comparison of Some Low-Temperature Heat Sources for Heat Pumps

Popis výsledku anglicky

The efficiency of a heat pump energy system is significantly influenced by its low-temperature heat source. This paper presents the results of operational monitoring, analysis and comparison of heat transfer fluid temperatures, outputs and extracted energies at the most widely used low temperature heat sources within 218 days of a heating period. The monitoring involved horizontal ground heat exchangers (HGHEs) of linear and Slinky type, vertical ground heat exchangers (VGHEs) with single and double U-tube exchanger as well as the ambient air. The results of the verification indicated that it was not possible to specify clearly the most advantageous low-temperature heat source that meets the requirements of the efficiency of the heat pump operation. The highest average heat transfer fluid temperatures were achieved at linear HGHE (8,13 +/- 4,50 degrees C) and double U-tube VGHE (8,13 +/- 3,12 degrees C). The highest average specific heat output 59,97 +/- 41,80 W/m(2) and specific energy extracted fro

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20704 - Energy and fuels

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Energies

ISSN

1996-1073

e-ISSN

—

Svazek periodika

12

Číslo periodika v rámci svazku

10

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

14

Strana od-do

1-14

Kód UT WoS článku

000471016700032

EID výsledku v databázi Scopus

2-s2.0-85066760821