Revitalizing Comfort: designing an Energy–Efficient HVAC System for the University Auditorium

Abdul Samad Khan; Muhammad Ehtesham ul Haque; Adeel Ahmed Khan; Syed Izhar ul haque; Syed Obaidullah; Muhammad Umer Khan

doi:10.36561/ING.26.2

Autores

Abdul Samad Khan NED University of Engineering and Technology, Pakistan https://orcid.org/0009-0005-5449-635X
Muhammad Ehtesham ul Haque NED University of Engineering and Technology, Pakistán https://orcid.org/0000-0001-8751-348X
Adeel Ahmed Khan NED University of Engineering and Technology, Pakistan https://orcid.org/0009-0004-6790-8176
Syed Izhar ul haque NED University of Engineering and Technology, Pakistán https://orcid.org/0009-0002-5693-5879
Syed Obaidullah NED University of Engineering and Technology, Pakistán https://orcid.org/0009-0000-0168-6196
Muhammad Umer Khan NED University of Engineering and Technology, Pakistán https://orcid.org/0009-0001-7173-6395

DOI:

https://doi.org/10.36561/ING.26.2

Palavras-chave:

AVAC, Público, Dimensionamento de dutos, Carga de resfriamento, Tubulação

Resumo

Hoje em dia, o conforto térmico está a tornar-se um grande problema para as pessoas devido ao aumento do aquecimento global e às alterações climáticas, mas pode ser resolvido pelo conceito de sistemas de Aquecimento, Ventilação e Ar Condicionado (HVAC). O objetivo do HVAC é proporcionar aos ocupantes uma zona de conforto para que se sintam confortáveis de acordo com o seu conforto térmico. O objetivo principal deste estudo é projetar e propor um sistema HVAC de acordo com as condições reais de projeto para o Auditório Universitário localizado em Karachi, Paquistão. No Auditório está instalado um sistema de Expansão Direta (Tipo DX) que ultrapassou sua vida útil de vinte anos. O refrigerante R-22 atualmente utilizado tornou-se obsoleto devido ao seu alto GWP (Potencial de Aquecimento Global) e ODP (Depleção de Ozônio). Potencial) valores que são 1810 e 0,05 respectivamente. Para atingir o objetivo deste estudo, duas abordagens são utilizadas. Método de diferença de temperatura de carga de resfriamento (CLTD) e software de programa de análise horária (HAP). A carga de resfriamento calculada a partir do método CLTD é de 202 kW equivalente a 57,5 toneladas de refrigeração (TR). Por outro lado, a carga de refrigeração calculada a partir do software HAP é de 192,8 kW equivalente a 55 TR. Ao considerar a carga de refrigeração calculada para o Auditório Universitário, são propostos dois sistemas HVAC diferentes, baseados no ciclo de compressão de vapor refrigerado a água e arrefecido a ar. Após este estudo, os engenheiros serão capazes de projetar um sistema HVAC para qualquer instalação com base nas condições de projeto. Além disso, eles podem propor diferentes sistemas HVAC econômicos e energeticamente eficientes para esse espaço específico.

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