This paper reviews the stability, heat transfer efficiency and photothermal conversion optimization studies of solid-liquid phase change materials applied to water heaters. Suggestions prospects were proposed. The study shows that PCMs are mostly filled in tank, thermal storage devices or solar collector heater system with paraffin wax, addition can significantly improve performance. Further in...

The energy consumption associated with domestic hot water supply services correspond to a significant portion of the total energy consumption of the urban water cycle. The objective of this study is to analyse the performance of domestic water heaters in the three largest cities of Australia (i.e. Sydney, Melbourne and Brisbane). The performance of systems was investigated undertaking a multi-p...

The performance of an air-source heat pump water-heater (ASHPWH) system manufactured by Kronoterm was benchmarked in this study for the application dairy farming Ireland. COP calculated to be 2.27 under normal operating conditions. device able supply water at 80 °C, however a full tank temperature not achieved or deemed necessary application. Litres per kWh used as metric and usable unit energy...

An evaluation of a variety of efficient water heating strategies for an all-electric single family home located in a mixed-humid climate is conducted using numerical modeling. The strategies considered include various combinations of solar thermal, heat pump, and electric resistance water heaters. The numerical model used in the study is first validated against a year of field data obtained on ...

This paper presents investigative results of the energy efficiency of hot water production for sanitary uses by means of gas-fired water heaters with the combustion chamber sealed with respect to the room in single-family houses and multi-story buildings. Additionally, calculations were made of the influence of pre-heating the air for combustion in the chimney and air supply system on the energ...

A solar water heater (SWH) converts radiation into thermal energy for various purposes, and its technology has experienced numerous developments. Many studies have focused on developing, optimizing, analyzing the technological configurations of SWH to improve efficiency, but they rarely achieve 80% efficiency. This review aims provide a broad overview SWH, including energetic exergetic approach...

Solar water heaters have been in use for decades many countries the world that less favorable climatic conditions solar energy as compared with Libya. However, still there is no usage of such technologies country. This could be attributed to factors including, among others, lack clear policy and/or serious plans establish technology, cheap prices conventional energy, and environmental awareness...

A straightforward framework for identifying key design parameters and determining their values for a site-built integrated collector storage solar water heater (ICSSWH) under uncertainty is developed. The framework is then used to evaluate the design for a ICSSWH, which uses locally available materials and can be assembled by builders without specialized training in solar system construction. I...