Table 3 - uploaded by Joong Gwang Lee
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Context 1
... total of 943 swimming pools were reported in this database with their basic dimensions (length, width, and depth) and monitored daily water uses, which were based on high frequency monitoring data for the pools. Averages of swimming pool dimensions are presented in Table 3 and Figures 1 through 3. Variations of the measurements are shown in the same figures as red lines based on plus and minus of standard deviations from the averages. This analysis shows that the average dimension of a swimming pool is about 30.1 feet long, 15.7 feet wide and 5.6 feet deep. ...
Context 2
... shown in the table, water use for backwashing filters varies widely. If the amounts of water uses in Table 3 are normalized by water use per month, it could be from 70 gallons to 1,300 gallons per month during a swimming season. The number of months for a swimming season varies regionally. ...
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Citations
... In order to estimate average and peak water use patterns and water conservation strategies based on long-term perspectives, a continuous simulation model for a swimming pool has been developed. Locally monitored long-term climate data can be applied based on ranges of swimming pool operating strategies [44]. ...
... In order to estimate average and peak water use patterns and water conservation strategies based on long-term perspectives, a continuous simulation model for a swimming pool has been developed. Locally monitored long-term climate data can be applied based on ranges of swimming pool operating strategies [44]. ...
Swimming pools are used around the world for recreational, rehabilitation and physical activity. From an energy and environmental standpoint, grey water as a waste thermal potential of swimming pools is a valuable heat source produced continuously in extensive, measurable and large quantities. The main objective of this article is to analyse the feasibility of proposed grey water heat recovery (GWHR) system from the showers and backwater from swimming pool filters for an indoor pool located in recreation centre in Poland. Analysis, calculations and results were obtained and discussions of water and energy consumption were carried out for the mentioned indoor swimming pool on the basis of real measurements case study for water flow rate, water temperature in swimming pools and showers. The results ensure a significant potential of energy savings by using the proposed GWHR system, which allows to reduce the energy demand by 34% up to 67% for pool water preheating and domestic hot water (DHW). The environmental impact of proposed GWHR system was analysed and calculated by using Common Air Quality Index. Environmental results are illustrated and discussed specially for the reduction of CO2, NOX, SOX emissions and dust and ensure a significant reduction of these pollutants in range of 34% to 48%.
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Outdoor surface water inequities are the disproportionate distribution of outdoor water for the management of blue and green space, including residential swimming pools and irrigated gardens, and contribute to thermal inequities that are particularly pervasive in arid climates. The purpose of this study was to map and assess social vulnerability to green space and blue space within two transects in metro Phoenix, Arizona, a socioeconomically diverse city that is water vulnerable and experiences intense urban heating. The objectives were to (1) map distribution of residential swimming pools; (2) link blueness and greenness of communities to social vulnerability; (3) evaluate the blueness and greenness of formerly redlined neighborhoods by the Home Owners’ Loan Corporation (HOLC); and (4) assess the severity of the urban heat island effect in redlined neighborhoods. The results show a strong relationship between social vulnerability and pool count and area, and overall greenness and blueness. Redlined neighborhoods have fewer pools, surface water features, and vegetation and, as a result, exhibit a greater severity of urban heat island effect than those graded as “safe”. In many cities like Phoenix, the legacy of segregative housing policies and the widening gap in socioeconomic vulnerability has amplified the disparate distribution and access to green and blue urbanscapes.
A sphagnum moss treatment system was added to the 50 m (1.3 million gallon) indoor swimming pool at the University of Maryland in College Park (USA). We quantified the reduction in chemical (calcium hypochlorite) usage and water wasting before and after the moss was added. This was part of a senior capstone design course. Chlorine use was reduced by 75% and water wastage was reduced by a similar amount. The report details the methods and change in key water quality parameters like pH, alkalinity, HCl use, sodium bicarbonate.