The Performance Of An Integrated Energy Recovery With Turbine Ventilator For Office Building Application In Hot-Humid Climate

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Date
2017-08
Authors
Tan, Yih Chia
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Publisher
Universiti Sains Malaysia
Abstract
Energy recovery technology has proven its effectiveness and efficiency for years. In this research an integrated energy recovery system with turbine ventilator (iERTV) is a multipurpose system. The study aims to evaluate the performance of iERTV in terms of sensible heat, latent heat and total enthalpy. To integrate the two units, exhaust stream of energy recovery unit is connected to the turbine ventilator unit to make up an integrated system. Performance testing is carried out in both stand-alone energy recovery unit and turbine ventilator unit at beginning stage, comparison is hence made between iERTV and two stand-alone units. Results showed that at four different inlet air temperature and three different inlet air humidity, stand-alone energy recovery unit (ERU) reached sensible efficiency up to 0.64, latent efficiency up to 0.52 and total enthalpy efficiency up to 0.54. iERTV has better sensible, latent and total enthalpy efficiencies which is up to 0.64, 0.69 and 0.59 respectively, under same operating conditions. Temperature change within the duct connected from energy recovery unit to turbine ventilator is also observed to be reduced from 32°C to 29.5°C-30.8°C. The statistical analysis proved that increase in outdoor temperature and outdoor humidity can give a significant increase in energy recovery efficiencies, while increase in the airflow rate will significantly decrease the efficiencies. Energy saving achieved by using iERTV showed highest increase of 11.183 kWh and 4.985 kgCO2e has reduced compared to ERU.
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Keywords
Turbine ventilator for office building , application in hot-humid Climate
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