scholarly journals Field measurements and numerical analysis on operating modes of a radiant floor heating aided by a warm air system in a large single-zone church

2021 ◽  
pp. 111646
Author(s):  
Ying Zhang ◽  
Chenbo Zhao ◽  
Thomas Olofsson ◽  
Gireesh Nair ◽  
Bin Yang ◽  
...  
Keyword(s):  
Numerical Analysis ◽  
Field Measurements ◽  
Operating Modes ◽  
Air System ◽  
Radiant Floor Heating ◽  
Floor Heating

scholarly journals Energy Saving Potential of Radiant Floor Heating Assisted by an Air Source Heat Pump in Residential Buildings

Energies ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1321
Author(s):  
Yu-Jin Hwang ◽  
Jae-Weon Jeong
Keyword(s):  
Energy Saving ◽  
Heat Pump ◽  
Residential Buildings ◽  
Heating Systems ◽  
Air Source Heat Pump ◽  
Heating Capacity ◽  
Heating Loads ◽  
Radiant Floor Heating ◽  
Floor Heating ◽  
Floor Temperature

The objective of this research is to establish an appropriate operating strategy for a radiant floor heating system that additionally has an air source heat pump for providing convective air heating separately, leading to heating energy saving and thermal comfort in residential buildings. To determine the appropriate optimal operating ratio of each system taking charge of combined heating systems, the energy consumption of the entire system was drawn, and the adaptive floor surface temperature was reviewed based on international standards and literature on thermal comfort. For processing heating loads with radiant floor heating and air source heating systems, the heating capacity of radiant floor heating by 1 °C variation in floor temperature was calculated, and the remaining heating load was handled by the heating capacity of the convective air heating heat pump. Consequently, when the floor temperature was 25 °C, all heating loads were removed by radiant floor heating only. When handling all heating loads with the heat pump, 59.2% less energy was used compared with radiant floor heating only. Considering the local discomfort of the soles of the feet, the floor temperature is expected to be suitable at 22–23 °C, and 31.5–37.6% energy saving compared with those of radiant floor heating alone were confirmed.

scholarly journals Rip currents in the non-tidal surf zone with sandbars: numerical analysis versus field measurements

Oceanologia ◽  
2020 ◽  
Vol 62 (3) ◽  
pp. 291-308
Author(s):  
Aleksandra Dudkowska ◽  
Aleksandra Boruń ◽  
Jakub Malicki ◽  
Jan Schönhofer ◽  
Gabriela Gic-Grusza
Keyword(s):  
Numerical Analysis ◽  
Surf Zone ◽  
Field Measurements ◽  
Rip Currents

Performance simulation and optimization of new radiant floor heating based on micro heat pipe array

2021 ◽  
Author(s):  
Heran Jing ◽  
Zhenhua Quan ◽  
Ruixue Dong ◽  
Limin Hao ◽  
Yunhan Liu ◽  
...  
Keyword(s):  
Heat Pipe ◽  
Performance Simulation ◽  
Simulation And Optimization ◽  
Micro Heat Pipe ◽  
Radiant Floor Heating ◽  
Floor Heating
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