Environmental sustainability in hospitals: Dual analysis of electrical consumption and pollutant emissions

IF 5.3 Q2 ENGINEERING, ENVIRONMENTAL Cleaner Engineering and Technology Pub Date : 2024-03-29 DOI:10.1016/j.clet.2024.100740
Norouz Mahmoudi , Mojtaba Sepandi , Mohammad Golaki , Fatemeh Honarvar , Rahim Zahedi
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Abstract

The emission of pollutants following electricity consumption is significant, and hospitals are major contributors to energy consumption. Hence, the aim of this study was a survey of electrical consumption rate and environmental pollutants emissions in selected hospitals. This descriptive-analytical and cross-sectional study was conducted over three years and based on electricity bills and bed indicators in selected hospitals in Tehran, Iran. Emissions Calculator software was used to calculate the emission of pollutants caused by electricity consumption. Kolmogorov Smirnov, Least Significant Difference (LSD), and one-way ANOVA tests were used to analyze the data. Results showed that the total average electricity consumption for each active day bed and occupied day bed was 9.6 and 13.6 times higher than the recommended standards. The average electricity consumption for each active day bed in hospitals A, B, and C was 13.7, 10.2, and 5 times higher than the standard value, respectively, while for occupied day beds, the consumption was 17.3, 15.1, and 8.5 times higher than the standard value, respectively. Additionally, the total electricity consumption in these hospitals resulted in the emission of 41837100 kg of CO2, 124815 kg of SO2, 103699 kg of NOx, 9769 kg of CO, 4885 kg of PM10, and 757 kg of VOCs into the environment. Based on the monthly active bed index and occupied day bed, there was a significant difference in the average electrical consumption among A, B, and C hospitals (p = 0.0001). Electricity consumption in the studied hospitals exceeds standards. Implementing optimal designs for lighting, heating, and cooling, along with energy optimization training, technical audits, and inspections are essential for both economic benefits and reducing environmental pollutants.

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医院的环境可持续性:耗电量和污染物排放的双重分析
用电产生的污染物排放量很大,而医院是能源消耗的主要贡献者。因此,本研究旨在调查选定医院的电力消耗率和环境污染物排放量。这项描述性分析和横截面研究历时三年,以伊朗德黑兰部分医院的电费账单和床位指标为基础。研究人员使用排放计算器软件计算用电量造成的污染物排放量。数据分析采用了 Kolmogorov Smirnov、Least Significant Difference (LSD) 和单向方差分析检验。结果表明,每张活动日间病床和占用日间病床的总平均耗电量分别是建议标准的 9.6 倍和 13.6 倍。A 医院、B 医院和 C 医院每张有效日间病床的平均耗电量分别是标准值的 13.7 倍、10.2 倍和 5 倍,而占用日间病床的耗电量分别是标准值的 17.3 倍、15.1 倍和 8.5 倍。此外,这些医院的总用电量导致向环境排放了 41837100 千克二氧化碳、124815 千克二氧化硫、103699 千克氮氧化物、9769 千克一氧化碳、4885 千克可吸入颗粒物和 757 千克挥发性有机化合物。根据每月活动病床指数和日间病床占用率,A、B、C 三级医院的平均耗电量存在显著差异(P = 0.0001)。研究医院的耗电量超标。对照明、供暖和制冷进行优化设计,同时开展能源优化培训、技术审核和检查,对于获得经济效益和减少环境污染物都至关重要。
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来源期刊
Cleaner Engineering and Technology
Cleaner Engineering and Technology Engineering-Engineering (miscellaneous)
CiteScore
9.80
自引率
0.00%
发文量
218
审稿时长
21 weeks
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