某醫院室內空氣品質評估

某醫院室內空氣品質評估



，並記錄當時之空間人數及當月門診量，另外並針對此 12 個監測點各做一次連續七天 的環境監測，以探討一天中、一週內或一年內環境狀況的變化，並比較工作日與非工作 時段的不同。研究結果顯示，大部分單位二氧化碳濃度最大值都在 1000ppm 以內，僅 有大廳在 87 年 11 、 12 月及 88 年 2 月超過 1000ppm ；員工餐廳、商店區、停車場等 地 87 年 7 月至 12 月最高溫度超過美國冷凍加熱空調協會 (Ammerican Society of Heating Refrigerating and Air-conditioning Engineers;ASHRAE) 夏季標準 26.1℃ ， 88 年 3 月至 4 月超過冬季標準 23.6℃ 。連續七天的環境監測得知，各單位二氧化碳濃度都有上班 2 小時後上升至最高的趨勢。行政中心、員工餐廳、商店區、門診藥局等單位可能因下班 時間，空調系統部份關閉，有下班時間溫度略高於上班時間的趨勢。而相對濕度則均在 建築工程師協會（ Chartered Institution of Building Services Engineers guide;CIBSE ）標 準 40% 至 70% 範圍內。該醫院通風狀況因各單位使用的系統不同，而換氣率有所不同

，以麻醉科、開刀房等特殊單位換氣率為最佳 ; 大廳、餐廳、停車場等則換氣率不足，

須提供更多換氣量以維持標準的換氣率。該醫院大樓營運至今僅 2 年，建議未來可再選 取一較老舊醫院大樓再做評估，以作比較。

The Indoor Air Quality in a Hospital



It depends on central air-conditioning system to adjust indoor temperature and ventilate in modern closed - construction building. According to the previous reports, central air-conditioning system effects indoor air quality; it also related to sick building syndrome. Owing to the business uniqueness of hospital, this presen t study was undertaken to investigate the indoor air quality in a hospital building in Taipei. Temperature, re lative humidity, concentration of CO2 and wind speed were measured by portable instruments in the middl e of each month for one year at 12 points in 10 departments, number persons in the space and outpatients w ere recorded. Environment indices were also monitored continuously in one week at 12 points. Accordingl y, the change of environment in one day, one week, one year and the difference between work-hours and of f-hours were evaluated. The maximum concentrations of CO2 were under 1000ppm in most departments.

However, the value more than 1000ppm in the lobby was acquired in November and December of 1998 an

d February of 1999. The maximum temperatures in the restaurants, shopping areas and parking areas were

higher than the standard values (26.1 of summer and 23.6 of winter, according to ASHRAE) from July ℃ ℃

to December in 1998 and in March and April of 1999. Based on one-week data of continuous environment

monitoring, the highest concentration of CO2 was reached two hours after beginning of working in every st

udied department. The temperatures in the offices, restaurants, stores and pharmacy were slightly higher aft

er work compared to those of work hours. It is likely due to the turning off of some air-conditioning equip

ment. The relative humidity was ranged between 40% to 70%, which was considered to be comfortable to

workers by CIBSE guide. The ventilation rate of every department was different since various ventilation s

ystems were used. The ventilation rates were the highest in the anesthesia and operation rooms, compared t

o the lower rates of the lobby, restaurants and parking areas. Because the subject building is merely two ye

ars, it is suggested that an older hospital building should also be evaluated to compare the results with obtai

n from investigation.