THERMAL PROPERTIES OF CARDIOPLEGIA HEAT EXCHANGERS
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F20%3APU144084" target="_blank" >RIV/00216305:26210/20:PU144084 - isvavai.cz</a>
Výsledek na webu
<a href="https://www.engmech.cz/im/proceedings/show_p/2020/82" target="_blank" >https://www.engmech.cz/im/proceedings/show_p/2020/82</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.21495/5896-3-082" target="_blank" >10.21495/5896-3-082</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
THERMAL PROPERTIES OF CARDIOPLEGIA HEAT EXCHANGERS
Popis výsledku v původním jazyce
Cardiac surgeries that involve cardiopulmonary bypass technique require a stable temperature maintenance for oxygenated blood or the cardioplegia solution. For this purpose, the heat exchangers are used. Nowadays, these exchangers consist of stainless steel tubes or bellows in a plastic shell. The blood is then warmed or cooled by water flowing in the shell around these structures. In the paper, the thermal specifications of two commercially used cardioplegia heat exchangers Capiox Cardioplegia and MYOtherm XP were evaluated and compared. For this purpose, a water was used as a substitution for blood. Both components were tested for varying flow rates in the pipes in the range 20-150 l/h and fixed flow rate 700 l/h in the shell. The thermal performances of both devices resulted similarly (up to 2.4 kW) at maximal flow rate. The performance factors for low flow rates approached values close to 0.98 and with increasing flow rate decreased down to 0.50. MYOtherm XP shows lower pressure drop than Capiox Cardioplegia due to more optimal construction. The major difference between the heat exchangers was observed in overall heat transfer coefficients at maximal flow rate and resulted in 2191.3 W/m(2)K or 1760.2 W/m(2)K for MYOtherm XP or Capiox Cardioplegia, respectively.
Název v anglickém jazyce
THERMAL PROPERTIES OF CARDIOPLEGIA HEAT EXCHANGERS
Popis výsledku anglicky
Cardiac surgeries that involve cardiopulmonary bypass technique require a stable temperature maintenance for oxygenated blood or the cardioplegia solution. For this purpose, the heat exchangers are used. Nowadays, these exchangers consist of stainless steel tubes or bellows in a plastic shell. The blood is then warmed or cooled by water flowing in the shell around these structures. In the paper, the thermal specifications of two commercially used cardioplegia heat exchangers Capiox Cardioplegia and MYOtherm XP were evaluated and compared. For this purpose, a water was used as a substitution for blood. Both components were tested for varying flow rates in the pipes in the range 20-150 l/h and fixed flow rate 700 l/h in the shell. The thermal performances of both devices resulted similarly (up to 2.4 kW) at maximal flow rate. The performance factors for low flow rates approached values close to 0.98 and with increasing flow rate decreased down to 0.50. MYOtherm XP shows lower pressure drop than Capiox Cardioplegia due to more optimal construction. The major difference between the heat exchangers was observed in overall heat transfer coefficients at maximal flow rate and resulted in 2191.3 W/m(2)K or 1760.2 W/m(2)K for MYOtherm XP or Capiox Cardioplegia, respectively.
Klasifikace
Druh
D - Stať ve sborníku
CEP obor
—
OECD FORD obor
20303 - Thermodynamics
Návaznosti výsledku
Projekt
<a href="/cs/project/EF16_019%2F0000753" target="_blank" >EF16_019/0000753: Centrum výzkumu nízkouhlíkových energetických technologií</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2020
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název statě ve sborníku
ENGINEERING MECHANICS 2020 (IM2020)
ISBN
978-80-214-5896-3
ISSN
1805-8248
e-ISSN
—
Počet stran výsledku
4
Strana od-do
82-85
Název nakladatele
BRNO UNIV TECHNOL, FAC MECHANICAL ENGINEERING
Místo vydání
BRNO
Místo konání akce
Online
Datum konání akce
24. 11. 2020
Typ akce podle státní příslušnosti
EUR - Evropská akce
Kód UT WoS článku
000667956100013