This paper focuses on Mathematical Modelling of Single Glazed and Double Solar air heater (SAH) which is special kind heat exchanger that transfers thermal energy from the solar radiation to fluid flowing inside collector. The most potential applications SAH supply hot for heating buildings, maintain a comfortable environment especially in winter season, preheating, desiccant refrigeration, dry...

The aim of this work was to test model based controllers with pilot-scale water heating equipment. The controlled variable is the outlet temperature, and the manipulated variable is the volumetric flow rate. The main disturbances are the heat duty and the inlet temperature. The power of the electric heater can be manipulated to imitate solar radiation, thus our system could be the physical mode...

Despite their limited water production and efficiency, double-slope solar stills are an appropriate solution for scarcity in hot arid regions. Numerous studies have focused on enhancing the effectiveness of stills. In this context, study introduces a with air heater condenser (DSSS-SAHC). The back cover conventional still was replaced by glass order to recover still’s thermal losses heating air...

Heat driven cooling technologies like vapour absorption and adsorption systems are environmentally friendly. Use of thermal compression in these systems saves precious and fast-depleting fossil fuel resources. Solar energy and low-grade waste heat can be effectively used in running these cooling systems. The present work focuses on the development of a solar-powered vapour adsorption based cool...

This paper demonstrates the preliminary experiments for two stage water desalination by humidification-dehumidification HDH process. An experimental set-up consists of two stages of closed air humidification dehumidification units. In this design, the saline water was heated by evacuated tube solar water heater integrated with electrically heated tank. A series of tests were performed in outdoo...

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...

This summer I had my first experience with something every homeowner dreads (and knows is coming eventually): a sudden puddle of water underneath the hot water heater. A local plumbing company quickly sent a technician out, who spared no time in pronouncing our current hot water heater dead. Then he explained that this company used flat-rate pricing: all jobs of a certain type cost the same fix...

Solar air heater acts as one of the important components in utilization solar energy. The absorbs irradiance and converts it into heat energy at absorbing surface. thermal is further use heating flowing through duct. heaters are cost effective well simple design. can be used space heating, timber seasoning agricultural drying. In spite all these advantages has certain challenges such low transf...

This communication discusses the energy, exergy, and economic feasibility of novel heat storage based on a single-slope solar still coupled with air heater (SAH). The analysis was conducted three different stills, i.e., (SSSS), latent storage, heater. performance evaluation all types has been compared to evaluate best-performing still. Paraffin wax as phase change material (PCM) used at bottom ...