A hybrid operating strategy of combined cooling, heating and power system for multiple demands considering domestic hot water preferentially: A case study

Energy ◽  
2017 ◽  
Vol 122 ◽  
pp. 444-457 ◽  
Author(s):  
Jiangjiang Wang ◽  
Ying Yang
Keyword(s):  
Power System ◽  
Hot Water ◽  
Domestic Hot Water ◽  
Operating Strategy ◽  
Combined Cooling

scholarly journals Potential of individual heat pumps for renewable energy storage in Smart Grid

2019 ◽  
Vol 100 ◽  
pp. 00057
Author(s):  
Elżbieta Niemierka ◽  
Piotr Jadwiszczak
Keyword(s):  
Smart Grid ◽  
Power System ◽  
Large Scale ◽  
Weather Condition ◽  
Heat Pumps ◽  
Hot Water ◽  
Power Sources ◽  
Domestic Hot Water ◽  
Renewable Power ◽  
Green Power

Ever-increasing power market and environmental policy enforce growth of renewable power sources. Renewables inflexibility and dependency on weather condition causes periodically imbalance in power system due to the green power overproduction. With the increase of renewable sources, the balancing problems in power system will be increasingly significance issue. It is proposed to use individual heat pumps as a next tool for energy system adjustment support. Power system adjustment will be carried out by active demand side management by intended domestic hot water tanks overheating. The smart grid individual heat pumps setpoints will be switched at community or even country scale. The strategy allows shaving the overproduction peaks through short-term increase of electricity consumption in remote controlled heat pumps and to lowering power demand during green power deficits using the thermal energy stored in overheated domestic hot water. The dynamic mathematical simulations were made to define the operation and limitation of active control strategy of heat pumps integrated into smart grid. The results allow testing and assessing the potential of individual heat pumps as a next tool for balancing the power system with large scale of renewable power.

scholarly journals Single case study photovoltaic panels within water heating system

2020 ◽  
Vol 15 (2) ◽  
pp. 63-68
Author(s):  
Richard Baláž
Keyword(s):  
Solid Propellant ◽  
Single Case ◽  
Electric Energy ◽  
Electric Heating ◽  
Heating System ◽  
Hot Water ◽  
Photovoltaic Panels ◽  
Domestic Hot Water ◽  
Heating Boiler

AbstractThe submitted article offers one of the possible options of a usage of photovoltaic panels for a domestic hot water preparation with an option to extra heating a heating system, and following recalculation of a produced electric energy amount in regards of a total return of the assembled system. An electric heating boiler combined with a heating option working on solid propellant was chosen for the experiment. The most frequently used combined electric storage tank was chosen as a classic option to heat domestic hot water.

scholarly journals Case study for experimental validation of a new presizing tool for solar heating, cooling and domestic hot water closed systems

2017 ◽  
Vol 10 ◽  
pp. 272-282 ◽  
Author(s):  
Hamza Semmari ◽  
Amandine LeDenn ◽  
François Boudéhenn ◽  
Jean-Philippe Praene ◽  
Franck Lucas ◽  
...  
Keyword(s):  
Experimental Validation ◽  
Solar Heating ◽  
Hot Water ◽  
Domestic Hot Water ◽  
Closed Systems

scholarly journals Peak Power of Heat Source for Domestic Hot Water Preparation (DHW) for Residential Estate in Poland as a Representative Case Study for the Climate of Central Europe

Energies ◽  
2021 ◽  
Vol 14 (23) ◽  
pp. 8047
Author(s):  
Łukasz Amanowicz
Keyword(s):  
Heat Source ◽  
Peak Power ◽  
Residential Buildings ◽  
Renewable Energy Sources ◽  
Hot Water ◽  
Correct Selection ◽  
Domestic Hot Water ◽  
Heat Demand ◽  
Selection Of

Due to the energy transformation in buildings, the proportions of energy consumption for heating, ventilation and domestic hot water preparation (DHW) have changed. The latter component can now play a significant role, not only in the context of the annual heat demand, but also in the context of selecting the peak power of the heat source. In this paper, the comparison of chosen methods for its calculation is presented. The results show that for contemporary residential buildings, the peak power for DHW preparation can achieve the same or higher value as the peak power for heating and ventilation. For this reason, nowadays the correct selection of the peak power of a heat source for DHW purposes becomes more important, especially if it uses renewable energy sources, because it affects its size and so the investment cost and economic efficiency. It is also indicated that in modern buildings, mainly accumulative systems with hot water storage tanks should be taken into account because they are less sensitive to design errors (wrongly selected peak value in the context of the uncertainty of hot water consumption) and because they result in acceptable value of peak power for DHW in comparison to heating and ventilation.

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