Simulação de sistemas de climatização combinada à simulação higrotérmica de edificações

AUTOR(ES)
DATA DE PUBLICAÇÃO

2006

RESUMO

Due to the nonexistence of a building simulation program that can simulate in details the combined heat, vapor and liquid transfer in porous elements and the HVAC systems, a generic and flexible computational algorithm has been elaborated in order to integrate models for both HVAC systems and multizone building models. In that algorithm, mathematical models for the primary system composed of chiller, cooling tower, primary pumps and condensation pumps have been described. For the secondary system, models for the cooling and dehumidifying coil, humidifier, fan and mixing box have been considered. Those mathematical models have been integrated into the whole-building simulation program DOMUS, allowing to perform hygrothermal building simulation combined to HVAC systems and plant simulation. Simulation results are presented in the following order: i) comparison between DOMUS and VisualDOE programs to verify the performance of HVAC systems models, which has indicated a reasonable agreement between both programs; ii) comparison between air and water cooled primary systems, illustrating the flexibility of the use of the algorithm and the advantages of the water-based system. iii) analysis of the influence of the adsorption and desorption phenomena on the calculations of thermal loads and energy consumption, showing that the disregard of moisture may oversize the HVAC system in 13% and underestimate the cooling energy consumption in 4% for the case study defined in this work.

ASSUNTO(S)

energia - conservação calor ar condicionado engenharia mecanica

ACESSO AO ARTIGO

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