Models Based Simulation of the Coefficient of Performance of a Domestic Heat Pump Water Heater

Sanitary hot water production make up to over 50 % of the monthly electrical energy consumption in South Africa residential sector. Employing an effective and efficient mechanism for sanitary hot water heating can lead to a substantial energy saving and demand reduction as well as creating a benign environment owing to the decrease of the carbon dioxide emission. Most of the renewable energy devices for sanitary hot water heating utilized the free and abundant solar energy. Domestic air source heat pump (ASHP) water heater is one of the renewable energy device used for sanitary hot water production. In this study, a data acquisition system (DAS) was constructed to measure the predictors (E, electrical energy consumed) and ( , average product of ambient temperature and relative humidity) and relevant parameters t