Analysis of Temperature Profile Changes of Ground with Heat Pump Horizontal Heat Exchanger

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F23%3A00368392" target="_blank" >RIV/68407700:21110/23:00368392 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1063/5.0173362" target="_blank" >https://doi.org/10.1063/5.0173362</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/5.0173362" target="_blank" >10.1063/5.0173362</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Analysis of Temperature Profile Changes of Ground with Heat Pump Horizontal Heat Exchanger

Popis výsledku v původním jazyce

The aim of the article is the analysis of the ground temperature distribution to a depth of 2 m, and long term ground temperature changes in which horizontal heat exchanger is arranged. Moreover, the temperature changes of glycol, which is supplied to the heat pump connected to the ground exchanger, were analyzed. The horizontal heat exchanger is made of PE 32 mm pipes arranged at a depth of 1.5 m in the form of 4 meandering loops, each about 100 m long, arranged on an area of approximately 780 m2. The ground heat exchanger supplies a 10kW heat pump, which provides heat for central heating and hot tap water for a single-family building. The facility is located in transitional climate of Lublin province, Poland. The temperature profile was measured with 2 m long probes, each with 5 temperature sensors enabling to perform measurements at ground depths of 0, 50, 100, 150 and 200 cm. The temperature and mass flows of the glycol flowing through the ground exchanger were measured at the heat pump metering equipment. The research covered the heating season from November to March. The results showed a slow and systematic reduction in the temperature of the glycol supplied to the heating installations during the season on average from 10 °C to 4 °C, as well as the temperature of the ground at each analyzed depth. At a depth of 50, 100, 150 and 200 cm, the temperature reduction was 9.7-3.0 °C, 11.0-3.5 °C, 11.9-4.0 °C and 12.3-4.5 °C, respectively. There was no risk of ground freezing in the vicinity of the heat exchanger. The influence of the outside temperature to the ground temperature fluctuations is insignificant at a depth of 150 cm. Ground temperature changes on heat exchanger depth are proportional to the time of low outdoor temperatures during the season and the total energy derived from ground by the heat exchanger.

Název v anglickém jazyce

Analysis of Temperature Profile Changes of Ground with Heat Pump Horizontal Heat Exchanger

Popis výsledku anglicky

The aim of the article is the analysis of the ground temperature distribution to a depth of 2 m, and long term ground temperature changes in which horizontal heat exchanger is arranged. Moreover, the temperature changes of glycol, which is supplied to the heat pump connected to the ground exchanger, were analyzed. The horizontal heat exchanger is made of PE 32 mm pipes arranged at a depth of 1.5 m in the form of 4 meandering loops, each about 100 m long, arranged on an area of approximately 780 m2. The ground heat exchanger supplies a 10kW heat pump, which provides heat for central heating and hot tap water for a single-family building. The facility is located in transitional climate of Lublin province, Poland. The temperature profile was measured with 2 m long probes, each with 5 temperature sensors enabling to perform measurements at ground depths of 0, 50, 100, 150 and 200 cm. The temperature and mass flows of the glycol flowing through the ground exchanger were measured at the heat pump metering equipment. The research covered the heating season from November to March. The results showed a slow and systematic reduction in the temperature of the glycol supplied to the heating installations during the season on average from 10 °C to 4 °C, as well as the temperature of the ground at each analyzed depth. At a depth of 50, 100, 150 and 200 cm, the temperature reduction was 9.7-3.0 °C, 11.0-3.5 °C, 11.9-4.0 °C and 12.3-4.5 °C, respectively. There was no risk of ground freezing in the vicinity of the heat exchanger. The influence of the outside temperature to the ground temperature fluctuations is insignificant at a depth of 150 cm. Ground temperature changes on heat exchanger depth are proportional to the time of low outdoor temperatures during the season and the total energy derived from ground by the heat exchanger.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20101 - Civil engineering

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název statě ve sborníku

AIP Conference Proceedings

ISBN

9780735446557

ISSN

—

e-ISSN

—

Počet stran výsledku

7

Strana od-do

"020005-1"-"020005-7"

Název nakladatele

AIP Publishing, APL, the American Institute of Physics

Místo vydání

Melville, NY

Místo konání akce

Dalešice

Datum konání akce

4. 10. 2022

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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