Evaluating Energy and Cost Requirements for Different Configurations of Off-Grid Rainwater Harvesting Systems
| Autor: | Michael E. Webber, Heather S. Rose, Charles R. Upshaw |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
lcsh:Hydraulic engineering
020209 energy Geography Planning and Development 02 engineering and technology Aquatic Science Biochemistry Energy storage Rainwater harvesting System model Search engine lcsh:Water supply for domestic and industrial purposes off-grid houses lcsh:TC1-978 0202 electrical engineering electronic engineering information engineering energy analysis Process engineering Water Science and Technology lcsh:TD201-500 business.industry Photovoltaic system Grid Power (physics) Computer data storage rainwater harvesting system Environmental science business |
| Zdroj: | Water, Vol 10, Iss 8, p 1024 (2018) Water Volume 10 Issue 8 |
| ISSN: | 2073-4441 |
| Popis: | The goal of this analysis was to evaluate energy and cost requirements for different configurations of a rainwater harvesting (RWH) system in conjunction with a solar PV and energy storage system for an off-grid house. Using models in fluid mechanics, we evaluated energy and power requirements for four different system configurations: 1. An On-Demand System containing a single speed pump (OD-SS), 2. An On-Demand System containing a variable speed pump (OD-VS), 3. A Pressurized Storage System where water is pumped once during the day into a large pressurized tank for later consumption and treated on demand via UV light (PS-AOT), and 4. A Pressurized Storage System where water is treated once per day via UV light and then stored for later consumption (PS-TO). Our analysis showed that the OD-SS system model requires 2.63 kWh per day, the OD-VS system model requires a total energy of 1.65 kWh per day, and the PS-AOT requires 1.67&ndash 1.69 kWh per day depending on the pump size, and the PS-TO system requires 0.19&ndash 0.36 kWh per day depending on the pump size. When comparing estimated cost between systems, we found the OD-SS system to be the most expensive. With the OD-SS system as a base for system costs, we found the OD-VS system to be 39% less expensive, the PS-AOT system to be 21% less expensive, and the PS-TO system to be 60% less expensive than the base OD-SS system. |
| Databáze: | OpenAIRE |
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