除濕機的空氣分配器開發及性能研究

Abstract

本研究以除濕機回風風速分佈狀態開發與設計出提升除濕機性能的空氣分配器。空氣分配器是以孔徑變化產生不同阻力的原理分配回風氣流以獲得流動均勻的氣流來提高熱交換效率。使用雷射切割機加工鋁板製作出分別由3級、6級與11級孔徑分層組合而成的三種空氣分配器（AD1-AD3）並實際安裝於除濕機進行除濕性能比較。除濕機的性能實驗參照CNS 12492標準條件進行。此外再加上CNS 12492標準中之過負載測試的環境條件進行實驗。研究結果顯示在標準及過負載環境條件下，AD1及AD3空氣分配器都可以明顯的提升除濕機的除濕能力及能源因數值，僅有AD2空氣分配器在標準條件下的除濕能力及能源因數值略低於原機。除濕機性能提升最顯著的為AD1空氣分配器，其除濕能力及能源因數值(EF)在標準條件下的增進率分別為5.44%及4.25%；在過負載溫濕度條件下的增進率分別為5.97%及5.46%。因此本研究所提出之AD1空氣分配器為最有效提升除濕機性能及用電效率的配置設計。

In this study, the air-distributors (ADs) were developed based on the return air-velocity distribution of the dehumidifier to improve the performance of dehumidifier. The ADs distributed the return air flow based on the principle of different resistance due to the change of the pore size to obtain a uniform air-flow to improve the heat exchange efficiency. The ADs used laser cutting to process aluminum plates to produce 3, 6 and 11 pore size layer configurations (AD1-AD3) and were actually installed in the dehumidifier to compare the dehumidification performance. The dehumidifier performance test was conducted in accordance with CNS 12492 standard conditions. In addition, the environmental condition of the overload test in the CNS 12492 was used for experiments. The results showed that the ADs could significantly enhance the dehumidification capacity and energy factor (EF), except of AD2 exhibited slightly lower than that of original dehumidifier at the standard test condition. The dehumidifier with AD1 had the highest enhanced ratio of dehumidification capacity and EF. The enhanced ratio of dehumidification capacity and EF were 5.44% and 4.25% at the standard test condition, and 5.97% and 5.46% at the overload test condition that compared with the original dehumidifier, respectively. Therefore, AD1 was developed in this study could effectively improve the dehumidification capacity and efficiency of the dehumidifier.