Influence of the refrigerant charge in an R407C liquid-to-water heat pump for space heating and domestic hot water production

2020 ◽  
Vol 110 ◽  
pp. 28-37 ◽  
Author(s):  
Jaime Sieres ◽  
Ignacio Ortega ◽  
Fernando Cerdeira ◽  
Estrella Álvarez
Keyword(s):  
Heat Pump ◽  
Hot Water ◽  
Space Heating ◽  
Water Production ◽  
Domestic Hot Water

scholarly journals Life Cycle Impact Assessment of a Solar Assisted Heat Pump for Domestic Hot Water Production and Space Heating

2014 ◽  
Vol 48 ◽  
pp. 813-818 ◽  
Author(s):  
Sara Eicher ◽  
Catherine Hildbrand ◽  
Annelore Kleijer ◽  
Jacques Bony ◽  
Mircea Bunea ◽  
...  
Keyword(s):  
Life Cycle ◽  
Impact Assessment ◽  
Heat Pump ◽  
Life Cycle Impact Assessment ◽  
Hot Water ◽  
Space Heating ◽  
Water Production ◽  
Domestic Hot Water ◽  
Life Cycle Impact

scholarly journals Experimental and numerical study of the domestic hot water production with PV panels and a heat pump

2019 ◽  
Vol 111 ◽  
pp. 01066
Author(s):  
F. J. Aguilar ◽  
D. Crespí ◽  
P. V. Quiles
Keyword(s):  
Heat Pump ◽  
Computer Model ◽  
Numerical Study ◽  
Hot Water ◽  
Water Production ◽  
Storage Tanks ◽  
European Standard ◽  
Photovoltaic Panels ◽  
Domestic Hot Water ◽  
Experimental Works

This article presents an experimental and modelling work which uses a compact domestic hot water heat pump (DHW-HP) that is simultaneously powered from photovoltaic panels (PV) and from the grid. Results from more than 240 days of experimental works have been used in order to develop and to validate the computer model of the system. The program, implemented in MATLAB, is computationally ‘light’ enough to allow mid-term simulations yet also detailed enough to accurately and coherently portray stratification within thermal storage tanks. Finally, as an example of the model capabilities, it has been used to simulate a domestic hot water tapping cycle from the European Standard EN 16147.

A solar-air hybrid source heat pump for space heating and domestic hot water

Solar Energy ◽  
2020 ◽  
Vol 199 ◽  
pp. 347-359 ◽  
Author(s):  
Siyuan Ran ◽  
Xianting Li ◽  
Wei Xu ◽  
Baolong Wang
Keyword(s):  
Heat Pump ◽  
Hot Water ◽  
Space Heating ◽  
Domestic Hot Water

Analysis of Domestic Hot Water Production Efficiency for Detached Houses

2015 ◽  
Vol 797 ◽  
pp. 185-191
Author(s):  
Arkadiusz Gużda ◽  
Norbert Szmolke
Keyword(s):  
Heat Pump ◽  
Production Efficiency ◽  
Hot Water ◽  
Coefficient Of Performance ◽  
Water Production ◽  
Water Heater ◽  
Domestic Hot Water ◽  
Air Source Heat Pump ◽  
Heat Pump Water Heater ◽  
Detached House

The article compares two means for domestic hot water production (DHW) for a detached house that is using gas boiler with a closed combustion chamber and air source heat pump water heater (ASHPWH). An analysis of domestic hot water production using an air source heat pump was made taking into account coefficient of performance listed according to the new BS EN 16147 standard. The analysis of outlay related to the investment and operating costs was also performed. Ultimately, the more profitable choice for domestic hot water production was made.

scholarly journals Solar and Heat Pump Systems for Domestic Hot Water Production on a Small Island: The Case Study of Lampedusa

2020 ◽  
Vol 10 (17) ◽  
pp. 5968
Author(s):  
Marco Beccali ◽  
Marina Bonomolo ◽  
Biagio Di Pietra ◽  
Giuliana Leone ◽  
Francesca Martorana
Keyword(s):  
Heat Pump ◽  
Fossil Fuels ◽  
Critical Issue ◽  
Hot Water ◽  
Solar Thermal ◽  
Small Island ◽  
Water Production ◽  
Pv System ◽  
Domestic Hot Water ◽  
Alternative Systems

The achievement of United Nations Sustainable Development Goals, related to energy and resource use, is a critical issue for small and insulated communities. In many minor islands, solar energy is not correctly exploited, and electrical heaters are connected to weak grids with very a high share of generation by fossil fuels. As a consequence, there is the necessity to assess the potential and the suitability of diffusion of alternative systems to avoid dependency on the electrical grid and reduce carbon emissions. This paper aims to evaluate the technical and economic performances of some alternative systems exploiting renewable energy for domestic hot water production. Four different systems were simulated and studied: a heat pump connected to the grid, a heat pump coupled with a photovoltaic plant, a heat pump combined with a solar thermal collector, and a solar thermal plant. Moreover, heat and electricity storages were studied for reducing impacts on the distribution network. The work presents data gathered for a study on energy-retrofit strategies on Lampedusa Island (Italy, 35°30′56″ north (N), 568 degree-days). Finally, to select the most cost-effective plant, an economic analysis of the chosen systems was carried out. This analysis shows that the best net present values are associated with the heat pump (HP) coupled with a stand-alone PV system and a small battery and solar thermal-assisted HP. The shortest payback time was calculated for the solar thermal system.

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