目前溫泉井普遍有釋出氣體的現象，以至於井頭所安裝的計量設備產生誤差，又因釋出之氣體可能有害，兩者均有待改善。
本文以位於新竹青草湖、台北八里、台北新莊、新竹尖石及台北金山的溫泉井頭之排氣及計量設施，分別測試及討論其對計量設備產生的誤差大小與排氣效果，並提出改善建議。
由案例研究顯示，因未安裝適當之排氣設施，可造成計量設備的誤差範圍約25%~140%，排氣則僅約總氣量之1%~58%，效果未達理想。利用溫泉水進入儲水槽的水力停留時間可充份排氣達99.96%，水中所溶存氣體量亦低至可忽略程度。
藉由調整溫泉井頭之排氣及計量設施的方式，能降低計量錯誤，亦達到改善泡湯者所處環境安全的顧慮。 It is common that hot-spring wells exhaust gas in Taiwan, causing errors on the facilities measuring water quantities. Furthermore, the gas can be pernicious. It’s critical to solve these two problems.
This paper discussed degas and measuring facilities of water quantities on the following 5 sites: Hsinchu-Cingcaohu, Taipei-Bali, Taipei-Hsinchuang, Hsinchu-Chienshih and Taipei-Jinshan hot-spring wells. By measuring the testing of the measuring facilities on the error scale and degas effects, some suggestions can be made for improvement.
The case studies have shown that, because degas equipment is not properly installed, the error range of the measurement is about 25% ~ 140%, hence the total exhausted gas is merely about 1% ~ 58% of all, less than acceptable expectation. Using hot-spring water into the storage tank to extend the hydraulic retention time, 99.96% of degas could be reached, and gas dissolved in the water by volume is as low as negligible extent.
It is concluded that, by adjustment of the degas facilities on hot-spring well and measurement methods, measurement error can be evidentially reduced, and the safety for customers of spa environments are ensured.
