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Evangelos Bellos, Panagiotis Lykas and Christos Tzivanidis
The exploitation of renewable energy sources in the building sector is a challenging aspect of achieving sustainability. The incorporation of a proper storage unit is a vital issue for managing properly renewable electricity production and so to avoid th...
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Fernando Illán-Gómez, José Ramón García-Cascales, Francisco Javier Sánchez-Velasco and Ramón A. Otón-Martínez
In this work we analyze numerically different design configurations to be used in a R1234yf DMS cycle coupled with a water source, transcritical CO2 heat pump for heating applications in the building sector. Specifically, we study the temperature range p...
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Francisco B. Lamas and Vítor A. F. Costa
Characterizing the refrigerant side of heat pump water heaters (HPWHs) can be intrusive and expensive. On the other hand, direct external measurement techniques can be unfeasible, particularly in commercial HPWHs for residential applications. Non-intrusi...
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Alvaro Antonio Ochoa Villa, José Carlos Charamba Dutra, Jorge Recarte Henríquez Henríquez, Carlos Antonio Cabral do Santos, José Ângelo Peixoto da Costa (Author)
Pág. e35173
This work aims to transient performance of chiller single effect absorption refrigeration using the LiBr/H2O pair with nominal capacity of 35 kW. The goal of this study is to verify the absorption chiller when subjected to thermal loads and it transientl...
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Monga F. Twite, Lukas W. Snyman, Johan De Koker, Adedayo Ademola Yusuff
A low-cost heat-exchanger system that can be used in high-pressure/low-pressure isolated solar water-heating systems in South Africa was developed for household applications. The combination of a copper coil and electrical heater allowed for isolation of...
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Elena Bee, Alessandro Prada and Paolo Baggio
Matching demand profile and solar irradiance availability is necessary to meet space heating and domestic hot water needs by means of an air-source heat pump and photovoltaic system in a single-family house. Demand-side management, with smart control of ...
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Anagha Pathak,Kiran Deshpande,Sandesh Jadkar
Pág. 19 - 33
There is a huge potential to deploy solar thermal energy in process heat applications in industrial sectors. Around 50 % of industrial heat demand is less than 250 °C which can be addressed through solar energy. The heat energy requirement of industries ...
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Nannan Dai, Xinyi Xu, Shuhong Li and Zheng Zhang
A hybrid photovoltaic solar assisted loop heat pipe/heat pump (PV-SALHP/HP) water heater system has been developed and numerically studied. The system is the combination of loop heat pipe (LHP) mode and heat pump (HP) mode, and the two modes can be run s...
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Masoud Yousefi, Misagh Moradali
In this paper, the thermodynamic performance of a direct expansion solar assisted heat pump (DX-SAHP), which is used to heat domestic water from 20°C to 45°C, is theoretically investigated. The system includes a 3m2 single-cover flat plate solar collecto...
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Stephen Tangwe, Michael Simon, Edson L. Meyer, Sampson Mwampheli, Golden makaka
In South Africa, there is an ongoing constraint on the electricity supply at the national grid to meet the demand. Eskom is implementing various measures such as the Integrated Demand Management and the promotion and encouragement of the use of energy ef...
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