Simulation-Aided Development of a Compact Local Ventilation Unit with the Use of CFD Analysis

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F24%3A00376429" target="_blank" >RIV/68407700:21220/24:00376429 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1007/s12273-024-1183-9" target="_blank" >https://doi.org/10.1007/s12273-024-1183-9</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s12273-024-1183-9" target="_blank" >10.1007/s12273-024-1183-9</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Simulation-Aided Development of a Compact Local Ventilation Unit with the Use of CFD Analysis

Popis výsledku v původním jazyce

Insufficient fresh air supply due to the increased air tightness of building envelopes after building renovations and window upgrades is a major concern of HVAC engineering today. The paper demonstrates the application of CFD simulations in the development of a compact decentralised ventilation unit with integrated heat recovery system for local ventilation of rooms, targeting this common issue. The device houses an innovative cyclically rotating recuperative heat exchanger, allowing effective condensate removal and de-icing in winter for its independent operation throughout the year. The paper introduces the ventilation unit, describes preparation of its numerical models, and approaches CFD simulation using ANSYS Fluent software. The initial design of the device was improved following the findings of the numerical analysis and the proposed adjustments were tested through follow-up CFD simulations, confirming that the desired outcomes were achieved. A separate CFD analysis was performed to assess the use of different air supply elements at the air outlet to the room, recommending the use of adjustable nozzles. A prototype ventilation unit was manufactured and the volume flow rate under different operating conditions was measured to be compared with the simulation results. The outcome of the research is a new type of compact local ventilation unit. An increase in device efficiency was achieved, with the aid of simulations, while maintaining its compact size. In addition to presenting the potential of using variant CFD analysis in the development of new HVAC equipment, the paper also indicates the drawbacks of using the Multiple Reference Frame (MRF) method to approximate the rotation of radial fan impellers in CFD simulations.

Název v anglickém jazyce

Simulation-Aided Development of a Compact Local Ventilation Unit with the Use of CFD Analysis

Popis výsledku anglicky

Insufficient fresh air supply due to the increased air tightness of building envelopes after building renovations and window upgrades is a major concern of HVAC engineering today. The paper demonstrates the application of CFD simulations in the development of a compact decentralised ventilation unit with integrated heat recovery system for local ventilation of rooms, targeting this common issue. The device houses an innovative cyclically rotating recuperative heat exchanger, allowing effective condensate removal and de-icing in winter for its independent operation throughout the year. The paper introduces the ventilation unit, describes preparation of its numerical models, and approaches CFD simulation using ANSYS Fluent software. The initial design of the device was improved following the findings of the numerical analysis and the proposed adjustments were tested through follow-up CFD simulations, confirming that the desired outcomes were achieved. A separate CFD analysis was performed to assess the use of different air supply elements at the air outlet to the room, recommending the use of adjustable nozzles. A prototype ventilation unit was manufactured and the volume flow rate under different operating conditions was measured to be compared with the simulation results. The outcome of the research is a new type of compact local ventilation unit. An increase in device efficiency was achieved, with the aid of simulations, while maintaining its compact size. In addition to presenting the potential of using variant CFD analysis in the development of new HVAC equipment, the paper also indicates the drawbacks of using the Multiple Reference Frame (MRF) method to approximate the rotation of radial fan impellers in CFD simulations.

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

Building Simulation

ISSN

1996-3599

e-ISSN

1996-8744

Svazek periodika

17

Číslo periodika v rámci svazku

12

Stát vydavatele periodika

CN - Čínská lidová republika

Počet stran výsledku

15

Strana od-do

2233-2247

Kód UT WoS článku

001324502700001

EID výsledku v databázi Scopus

2-s2.0-85205440723