scholarly journals Analysis of Annual Energy Consumption of Apartment House with PCM Floor Heating System by Simulation

2018 ◽  
Author(s):  
TaeWon Kim ◽  
Minyoung Kim ◽  
Jin Chul Park
Keyword(s):  
Energy Consumption ◽  
Heating System ◽  
Apartment House ◽  
Floor Heating

scholarly journals Thermal Comfort Analysis of Combined Radiation-Convection Floor Heating System

Energies ◽  
2020 ◽  
Vol 13 (6) ◽  
pp. 1420 ◽  
Author(s):  
Beungyong Park ◽  
Seong Ryong Ryu ◽  
Chang Heon Cheong
Keyword(s):  
Energy Consumption ◽  
Thermal Performance ◽  
Thermal Environment ◽  
Heating System ◽  
Hot Water ◽  
Pump System ◽  
Heat Pump System ◽  
Convection Heating ◽  
The Difference ◽  
Floor Heating

In this paper, a novel combined radiation-convection floor heating system is shown. This study uses practice-based learning and investigated the thermal performance of a combined radiation-convection floor heating system with a water heat pump system by evaluating the thermal environment and energy consumption in an experimental test. A new method that analyzed the thermal performance of four different controls was developed and applied. The results of the surface temperature distributions demonstrated that Mode 1, which uses only convection, had the lowest floor temperature and was thus considered inappropriate for occupants who sleep on the floor. By contrast, Modes 2, 3, and 4 showed high floor surface temperatures as hot water was supplied to the radiant heating panel. The predicted mean vote (PMV) results suggest that radiant floor heating is not appropriate for intermittent heating. In other words, occupants of single residences who return home at night will experience a long period of discomfort if they heat their room using floor heating. In this case, Mode 1, which is convection heating, and Modes 3 and 4, which represent mixed modes provide a more comfortable environment. The difference between this experimental study and previous research is that four different control modes for a combined radiation-convection system were evaluated based on the same location of the equipment in a laboratory. Furthermore, we studied the long-term real-scale thermal performance using panel and energy consumption.

Thermal performance and optimized thickness of active shape-stabilized PCM boards for side-wall cooling and under-floor heating system

2016 ◽  
Vol 25 (8) ◽  
pp. 1279-1295 ◽  
Author(s):  
Yuekuan Zhou ◽  
Siqian Zheng ◽  
Hao Chen ◽  
Guoqiang Zhang
Keyword(s):  
Energy Consumption ◽  
Thermal Performance ◽  
Indoor Air ◽  
Temperature Fluctuation ◽  
Side Wall ◽  
Heating System ◽  
Relative Temperature ◽  
Fluctuation Rate ◽  
Floor Heating ◽  
Consumption Saving

Phase change materials (PCMs) have the potential to maintain thermal comfort of occupants while reducing the energy consumption due to their high energy storage capacity. In this paper, thermal performance of active heat conduction–enhanced shape-stabilized phase change material (HCE-SSPCM) encapsulated boards, fitted with active hot/chilled water pipes were investigated for side-wall cooling and for incorporation in an under-floor heating system. Numerical model based on finite difference method was developed to study the effect of HCE-SSPCM on annual heating/cooling energy consumption saving and indoor air relative temperature fluctuation rate reduction. Our study shows that there exists an optimal location for HCE-SSPCM according to thermal resistance value of each layer and ambient conditions. The recommended thickness and thermal conductivity of HCE-SSPCM wallboard were 30–60 mm and 1–1.5 W·m−1·K−1. Compared to the room without HCE-SSPCM boards, the maximum annual heating energy consumption saving would be 16.2%. Indoor air relative temperature fluctuation rate for heating would be reduced by 41.3%. The maximum annual cooling energy consumption saving would be 4.53%. Indoor air relative temperature fluctuation rate for cooling would be reduced by 56.2%. Our research provided scientific evidences for application of PCMs to reduce energy consumption in residential buildings without sacrificing indoor thermal comfort.

scholarly journals Research on the influence of uneven solar radiation distribution on the radiant floor heating system in railway stations on Tibetan Plateau

2021 ◽  
Vol 261 ◽  
pp. 01058
Author(s):  
Jiacheng Zheng ◽  
Tao Yu ◽  
Bo Lei ◽  
Ruixin Lv ◽  
Chen Chen ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Tibetan Plateau ◽  
Solar Radiation ◽  
Thermal Comfort ◽  
Heating System ◽  
Railway Stations ◽  
Radiation Distribution ◽  
Radiant Floor Heating System ◽  
Radiant Floor Heating ◽  
Floor Heating

In cold regions, radiant floor heating systems are commonly used in public buildings due to better thermal comfort and lower energy consumption. However, in transportation buildings with many transparent envelopes such as railway stations on Tibetan Plateau, the strong solar radiation entering into the station may cause local overheating, which has a great effect on the radiant floor heating system. In this paper, a railway station on Tibetan Plateau is simulated to investigate the influence of uneven solar radiation distribution on the radiant floor heating system. Results show that due to the strong solar radiation, the floor surface temperature and indoor operative temperature in some parts of the waiting hall can reach up to 30 °C and 26 °C, respectively. The temperature difference of the floor surface can even exceed 5 °C occasionally during the heating period. According to the results, it can be found that the method of reducing the heating in the area with strong solar radiation and making full use of solar radiation for heating is an effective way to improve the indoor thermal comfort and reduce the heating energy consumption of heating system.

scholarly journals Reducing The Energy Consumption By Using Floor Heating With Phase Change Materials In The Toronto Climate

2021 ◽  
Author(s):  
Lindsay Fialkov
Keyword(s):  
Energy Consumption ◽  
Phase Change ◽  
Phase Change Materials ◽  
Energy Savings ◽  
Cost Savings ◽  
Heating System ◽  
Radiant Floor Heating System ◽  
The Cost ◽  
The Impact ◽  
Floor Heating

This major research project focuses on reducing the energy consumption, by modelling a radiant floor heating system with phase change materials, in the Toronto climate. Computer generated simulations were performed using DesignBuilder software, using an example of a typical condominium in Toronto .Two south facing suites and two north facing suites were investigated. Of those suites, one north facing suite had PCM below the finished floor, as well as one south facing suite. The objective of these simulations was to determine the impact of using PCM in the condo suites. Three different types of PCM were used, in order to determine which type had the biggest energy savings. The PCMs were M91/Q21, M51/Q21 and M27/Q21. The final results showed that the suites with the M27/Q21 PCM had the lowest energy usage. A cost savings comparison was performed based on the rate of energy used and the cost of the energy, provided by the Ontario Energy Board.

scholarly journals Reducing The Energy Consumption By Using Floor Heating With Phase Change Materials In The Toronto Climate

2021 ◽  
Author(s):  
Lindsay Fialkov
Keyword(s):  
Energy Consumption ◽  
Phase Change ◽  
Phase Change Materials ◽  
Energy Savings ◽  
Cost Savings ◽  
Heating System ◽  
Radiant Floor Heating System ◽  
The Cost ◽  
The Impact ◽  
Floor Heating

This major research project focuses on reducing the energy consumption, by modelling a radiant floor heating system with phase change materials, in the Toronto climate. Computer generated simulations were performed using DesignBuilder software, using an example of a typical condominium in Toronto .Two south facing suites and two north facing suites were investigated. Of those suites, one north facing suite had PCM below the finished floor, as well as one south facing suite. The objective of these simulations was to determine the impact of using PCM in the condo suites. Three different types of PCM were used, in order to determine which type had the biggest energy savings. The PCMs were M91/Q21, M51/Q21 and M27/Q21. The final results showed that the suites with the M27/Q21 PCM had the lowest energy usage. A cost savings comparison was performed based on the rate of energy used and the cost of the energy, provided by the Ontario Energy Board.

Low Temperature Floor Radiate Heating System Designed Especially for Large Room Located in Cold Area

2010 ◽  
Vol 160-162 ◽  
pp. 1388-1393
Author(s):  
Li Fu Gao
Keyword(s):  
Energy Consumption ◽  
Heat Exchanger ◽  
Low Temperature ◽  
Heating System ◽  
Low Energy ◽  
Monitoring Data ◽  
Design Requirement ◽  
Low Energy Consumption ◽  
Cold Area ◽  
Floor Heating

Highlighted with its advantage of convenience, low energy consumption and sanitation, low temperature floor radiate heating system has been favored and been used in most heating areas since it was introduced into china in mid 80’s,But it is generally believed that floor heating system alone can not meet heating design requirement for large room located in cold area and is only deemed as an assistant heating methods.This article has proved by monitoring data collected from low temperature floor radiate heating system designed for large room in cold area that it is well enough to apply low temperature floor radiate heating system alone with reasonable design and running control and modification of heat exchanger.

Effect of Building Height on Energy Consumption of Radiator and Floor Heating Systems

2011 ◽  
Vol 110-116 ◽  
pp. 4636-4642 ◽  
Author(s):  
Vahid Golkarfard ◽  
Pouyan Talebizadeh ◽  
Mazyar Salmanzadeh
Keyword(s):  
Energy Consumption ◽  
Heat Loss ◽  
Cfd Simulation ◽  
Heating System ◽  
Cold Season ◽  
Temperature Gradients ◽  
Convective Heating ◽  
Heating Systems ◽  
Impressive Result ◽  
Floor Heating

Buildings are one of the most important energy consumers in the world. High temperature gradients in heating systems can cause the increase of heat loss of the envelopes during the cold season and consequently increase the energy consumption. Floor heating systems has shown that they can generate lower temperature gradients in compare with other convective heating systems. In present study, the CFD simulation is done for a 3-D room and the required energy to achieve the thermal comfort in a room is calculated. The height of the room is changed and the energy loss of the room is calculated for both systems. Results showed that as the height doubles, the wall heat loss for radiator system almost doubles but for the floor heating system it was about 60 percent. This impressive result can recommend the floor heating systems for working areas with tall ceilings.

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