A New Performance Estimate Method for Design of Storage-Type Domestic Electrical Water-Heaters Based on the CFD Simulation

Abstract:

The 3D physical model of the electrical water heater was built. The water-heater performance was resolved by computer fluid dynamics simulation (CFD). The heater performance is characterized by a new method rather than that the discharge efficiency, extraction efficiency and fraction of heat recoverable. The new method is based on the constant discharge water temperature and rate for end user, 5L/min and 43°C that include the hot water from EWH and cold water from outside EWH. But the water discharge rate from EWH was variable as the water temperature discharge from EWH was variable. Compared with the traditional method, it is more close to the user using reality condition.

• Periodical: Advanced Materials Research (Volumes 129-131)
• Pages: 463-466
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.129-131.463
• Online since: August 2010
• Authors: Li Li Zhao, Zhi Jun Zhang, Shi Wei Zhang
• Keywords: Computational Fluid Dynamics (CFD), Electric Water Heater, Performance Estimate, Simulation, Utility Efficiency

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