zref:shw:start
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| zref:shw:start [2025/10/07 23:54] – ↷ Page moved from shw:start to zref:shw:start Alan Shea | zref:shw:start [2025/10/08 00:54] (current) – [ROI Notes] Alan Shea | ||
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| ELWA Hospital has 11 water heaters of 4.5 kW each, for a total of 49.5 kW when all the water heaters are on. This is a significant portion of the hospital load on the generators and electricity cost. | ELWA Hospital has 11 water heaters of 4.5 kW each, for a total of 49.5 kW when all the water heaters are on. This is a significant portion of the hospital load on the generators and electricity cost. | ||
| - | Solar hot water collectors with a solar-powered circulating pump would reduce the total load of the hospital, and reduction of electricity cost, by providing a significant portion of the hot water needs. In some cases, the solar-heated water could provide all the hot water required. | + | Solar hot water collectors with a solar-powered circulating pump would reduce the total electrical |
| A smaller system using identical panels has been operating on one of the campus residences since 2015 and provides most of the hot water for the home. Output in rainy season is significantly reduced. | A smaller system using identical panels has been operating on one of the campus residences since 2015 and provides most of the hot water for the home. Output in rainy season is significantly reduced. | ||
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| ====ROI Notes== | ====ROI Notes== | ||
| - | Without installing water and electric meters on each hot water heater it is difficult to estimate actual cost and savings of heating water.((Adding an electric meter would cost about $70 each, and a hot water meter would cost about $200 each.)) The water heaters are high efficiency and are well-insulated, | + | Without installing water and electric meters on each hot water heater it is difficult to estimate actual cost and savings of heating water.((Adding an electric meter would cost about $70 each, and a hot water meter would cost about $200 each.)) The water heaters are high efficiency and are well-insulated(([[https:// |
| The largest user of hot water is the hospital laundry; as such it may be worth installing two systems on that water heater -- one on the east side to capture morning sun, and one on the west side to capture afternoon sun. | The largest user of hot water is the hospital laundry; as such it may be worth installing two systems on that water heater -- one on the east side to capture morning sun, and one on the west side to capture afternoon sun. | ||
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| <WRAP half column> | <WRAP half column> | ||
| * [[https:// | * [[https:// | ||
| - | * {{ : | + | * {{ : |
| - | * {{ :zref:shw:m311.1_solar_hot_water_frame.pdf |M311.1 Mounting Frame}} | + | * {{ :zref:shw:heliatos-sw-38-beach_solar_water_heater_kit.pdf |Heliatos Solar Water Heater Kit}} |
| + | * {{ : | ||
| </ | </ | ||
| <WRAP half column> | <WRAP half column> | ||
| - | * {{ :zref:shw:heliatos-sw-38-beach_solar_water_heater_kit.pdf |Heliatos Solar Water Heater Kit}} | + | * {{ :zref:shw:m311.1_solar_hot_water_frame.pdf|M311.1 Mounting Frame}} |
| - | * {{ :zref:hospital:shw:heliatos_mh38datasheet.pdf |Heliatos MH38 Panel Datasheet}} | + | * {{ :zref:shw:m311.1_solar_hot_water_frame.dwg |
| </ | </ | ||
| </ | </ | ||
zref/shw/start.1759881288.txt.gz · Last modified: by Alan Shea
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