大型賣場空調風機節能及總等值年度化費用分析

Hypermarket air conditioning energy saving TRRL analysis

鍾宏勝(Hanson Chung)；蔡尤溪(Yew Khoy Chuah)

大型賣場 ； 空調節能 ； 風機 ； 總年均化回收 ； Hypermarket ； air-conditioning energy saving ； fan ； TRRL

冷凍空調&能源科技

117期（2019 / 09 / 10）

24 - 30

繁體中文;英文

針對某大型賣場的耗電特性，大賣場內多為大空間，任何控制動作賣場內的溫度反應都會有相當長的延遲時間，進一步探討採用空調變風量，改變送風機轉速頻率，依照季節溫度以及賣場早晚開店或閉店前顧客人數較少時段以降頻30Hz和45Hz改變空調箱馬達轉速，分析賣場空調環境因溫度變化下產生的節能效益。經由總等值年度化費用（TRRL）分析，計算總投資費用及利率變化，進行綜合比較經濟效益；分析由97台7.5馬力以下的小型定頻空調箱，增設變頻器更改成變風量空調箱。本研究分析總投資工程費用及維護保養操作費用後，探討產生之節省電費，並加入電費之調漲變化比例及利息變化分析，以總等值年度化費用分析。經由年利息計算資本回收因子推導，本研究發現約在七年內可將投資成本回收，故大型賣場空調箱設備採用變頻器作變風量運轉具有節能投資效益。空調箱加裝變頻器之後，每年空調用電占比可下降約2%，空調箱增設變頻器將可節省每年總電費1.5%～2%，對於整體供電調度及用電戶電費支出有很大的幫助。

This study investigated the air-conditioning energy use of a hypermarket for which control response would be usually slow. The feasibility of variable speed fan control in different seasons and at times of fewer people was studied. Control strategies of 30Hz and 45Hz setting for fan speed were applied to meet the lower air-conditioning load. Energy saving and economic benefits were analyzed. Total revenue required levelization (TRRL) was used to calculate the investment return. Interest rate was considered in the overall economic analysis. There were altogether 97 air-handling units with fans power rating under 7.5 hp were converted to variable speed drive in the analysis. The total cost included construction and maintenance. The demand charge was also analyzed in the electricity cost saving. Annual TRRL analysis has found that investment return can be as short as only seven years. Therefore variable speed drive fan control strategy of air-handling units would be beneficial for of a hypermarket as studied. The results also show that air-conditioning energy can be reduced by 2% of the annual total. It is proposed that such control strategies be used in new construction project so that about 1.5%~2% of building energy can be saved.

1. (2005)。經濟部建築空調設備性能標準，建築物能源管理及效率指標研究計畫附錄 D ，2005。
2. 和旭風機 SBR-315 型，在 1500rpm 的等轉速線所測繪的風量-靜壓的變化曲線。
3. 和旭風機 SBR-315 型，在 1500、1300、1070rpm 的等轉速線所測繪的風量-靜壓的變化曲線。
4. Canbay, C. S.,Hepbasil, A.,Gokcen, G.(2004).Evaluating performance indices of a shopping centre and implementing HVAC control principles to minimize energy usage.Energy and building,36,587-598.
5. Li, H.R.,Braun, James, E.(2007).Economic Evaluation of Benefits Associated with Automated Fault Detection and Diagnosis in Roof Top Air Conditioners.ASHRAE Trans,113(2),200-210.
6. Wen, Z. H.(2006).Dynamic simulation of energy management control functions for HVAC systems in buildings.Energy Conversion and Management,926-943.
7. Xiao, Fu,Ge, Gaoming,Niu, Xiaofeng(2011).Control performance of a dedicated outdoor air system adopting liquid desiccant dehumidification.Applied Energy,88(1),143-149.
8. 李世文(2015)。國立台北科技大學。
9. 楊俊欣(2003)。國立台北科技大學。
10. 經濟部(2005)。經濟部，空調節能設計樹規範於各類建築物之節能分析比較，建築物能源管理及效率指標研究計畫附錄 E，2005。
11. 廖克陽(2016)。國立台北科技大學。
12. 蔡尤溪,李文興(1999)。內政部建築研究所研究計畫成果報告內政部建築研究所研究計畫成果報告,未出版
13. 蔡尤溪,李文興,李魁鵬(2001)。,經濟部能源局。