Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 3 of 3
Full-Text Articles in Mechanical Engineering
Measured Performance Of A High-Efficiency Solar-Assisted Heat Pump Water Heater, Florida Solar Energy Center, Carlos Colon
Measured Performance Of A High-Efficiency Solar-Assisted Heat Pump Water Heater, Florida Solar Energy Center, Carlos Colon
FSEC Energy Research Center®
This paper describes a novel solar photovoltaic-assisted heat pump water heater (PV-HPWH). The system uses two 310 Wp PV modules, micro-inverters and innovative controls to produce and store daily hot water. The system likely costs half that of solar thermal systems, with greater reliability, no freeze protection and potentially superior performance in cloudy locations. Moreover, no net metering is needed for the PV, which with two modules makes for a simple installation.The HPWH controls have been modified through experimentation such that higher tank temperatures are achieved during the day when solar availability is high while avoiding triggering the compressor during …
Improved Hot Water Code Calculation, Florida Solar Energy Center, Jeffrey Sonne
Improved Hot Water Code Calculation, Florida Solar Energy Center, Jeffrey Sonne
FSEC Energy Research Center®
The purpose of this report is to identify hot water waste sources, characterize the implications of climatic differences on hot water use and characterize the energy impacts of hot water recirculation systems and controls with respect to energy consumption in Florida homes, and recommend Florida-specific methods that can be employed in the Florida Energy Code for residential hot water use and energy consumption calculations.
Pv-Driven Heat Pump Water Heater Final Report, Florida Solar Energy Center, Carlos Colon
Pv-Driven Heat Pump Water Heater Final Report, Florida Solar Energy Center, Carlos Colon
FSEC Energy Research Center®
As part of the effort towards zero energy buildings and high efficiency water heating systems, the Florida Solar Energy Center (FSEC) working under contract with the National Renewable Energy laboratories (NREL) has successfully completed a demonstration of a photovoltaic heat pump water heater (PV-HPWH) concept. The system integrates two 310Wp solar photovoltaics (PV) modules and grid tied micro-inverters with a commercially available 50-gallon HPWH. The project showcases innovative strategies for distributed PV thermal systems that limit grid interaction and provide increased thermal energy storage. The system utilizes a custom appliance control module (ACM) interface to vary thermostat settings (115 °F …