空調系統節能的方法有許多種,外氣空調節能對於尖峰用電的改善 無明顯的效果,因此並不受到重視。但站在能源與使用者付費的觀點而 言,外氣空調著實是一個投資少、獲利多、回收快的空調節能方式。尤其 以全年,24小時使用空調之場所為甚;因此外氣節能空調系統之應用與研 究應予以重視。 外氣空調之所以未受重視,除了未能有效解決國內目前電力之夏季 尖峰負載的因素外,尚缺乏一套考慮空調機組耗電量的外氣空調節能控制 技術。 針對此原因,本研究乃以現有的全氣式定風量冰水式空調系統,提出 四個外氣空調模式,對這四種外氣空調模式提出各自的物理模型和外氣空 調策略,撰寫電腦程式相互比較何者省能並且討論外氣空調策略省能的原 因,以期望能提供改善現有的外氣空調策略,增加外氣空調省能的效果並 可得到室內恆溫、恆濕控制。經過電腦的演算結果,獲得下列結論: (1) 使用水加濕器於外氣空調的過程,確實有助於節省空調耗電量。 (2) 當外氣焓值介於室內焓值與供風焓值之間,使用冷卻減濕盤管與再熱 器一起動作時,混合風的比例不一定以焓值控制器的選擇為最好。
It is many way that energy-saving of Air condition system. Because energy-saving of free cooling can not improve crest of electricity supply, so free cooling isn''t appreciated. If we consider energy-saving and charge cost for user, energy-saving of Air condition system of free cooling is a minimum investment 、much profit and fast return ,especially it is used during 24-hours day. To appreciate energy-saving of free cooling is very important. It isn''t appreciated that free cooling doesn''t consider air condition system to consume power. The investigation research that constant air-volume chiller water system and address four free cooling models. Four models introduce physics model and device of free coolig for themselves . Using computer program compare each other to discuss reason of energy-saving. We hope that this investigation can improve de- vice of free cooling、increase energy-saving effect and get con- stant interior temperature and humidity. By simulative computer program we get conclusion by follows: (1) To use water sprayer is helpful for energy-saving effect during free cooling process. (2) When extraventricular enthalpy is between enthalpy of indoor and enthalpy of blast, it is not very good that enthalpy con- troller select mix-air proportion.