Comparison of the Performance of a Forced-Air and a Radiant Floor Residential Heating System Connected to Solar Collectors

Haddad, Kamel; Purdy, Julia; Laouadi, Abdelaziz

doi:10.1115/1.2770754

Cited by 7 publications

(5 citation statements)

References 4 publications

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“…A comparison of how long it took from the peak heating delivery by either the forced air or the radiant panel to the maximum resultant operative temperature was graphically derived and shown in Table 9 below. The results are consistent with existing research (Haddad & Purdy, 2007) in that radiant heating systems provides better thermal environments and energy efficiency in buildings with better envelopes. This is generally due to the lower temperature output at the primary heat generation site, therefore, allowing higher coefficient of performance or efficiency.…”

Section: Forced Air and Radiant Ceiling Heating Thermal Comfort Comparisonsupporting

confidence: 91%

Field Study of a Radiant Heating System for Sleep Thermal Comfort and Potential Energy Saving

Wang¹

2022

Preprint

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As sleep is unconscious, the traditional definition of thermal comfort with conscious judgment does not apply. In this thesis sleep thermal comfort is defined as the thermal condition which enables sleep to most efficiently rejuvenate the body and mind. A comfort model was developed to stimulate the respective thermal environment required to achieve the desired body thermal conditions and a new infrared sphere method was developed to measure mean radiant temperature. Existing heating conditions according to building code conditions during sleeping hours was calculated to likely overheat a sleeping person and allowed energy saving potential by reducing nighttime heating set points. Experimenting with existing radiantly and forced air heated residential buildings, it was confirmed that thermal environment was too hot for comfortable sleep and that the infrared sphere method shows promise. With the site data, potential energy savings were calculated and around 10% of energy consumption reduction may be achieved during peak heating.

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Section: Forced Air and Radiant Ceiling Heating Thermal Comfort Comparisonsupporting

confidence: 91%

Field Study of a Radiant Heating System for Sleep Thermal Comfort and Potential Energy Saving

Wang¹

2022

Preprint

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“…Chen [1] compares the thermal comfort and the energy consumption among a ceiling radiant heating system, a radiator heating system and a warm air heating system by using airflow program Phoenics-84 and air-conditioning load program Accuracy. Haddad et al [2] compares the performance of a forced-air and a radiant floor residential heating system connected to solar collectors. Raftery et al [3] compares the performance of a joint underfloor air distribution (UFAD) and radiant hydronic system with a typical only UFAD system.…”

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confidence: 99%

Energy, cost, and CO2 emission comparison between radiant wall panel systems and radiator systems

Bojić

Cvetković

Miletić

et al. 2012

Energy and Buildings

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8The main goal of this paper is to evaluate the possibility of application or replacement of radiators 9 with low-temperature radiant panels. This paper shows the comparison results of operations of 4 10 space heating systems: the low-temperature radiant panel system without any additional thermal 11 insulation of external walls (PH-WOI), the low-temperature radiant panel system with additional 12 thermal insulation of external walls (PH-WI), the radiator system without any additional thermal 13 insulation of external walls (the classical heating system) (RH-WOI), and the radiator system with 14 additional thermal insulation of external walls (RH-WI). The operation of each system is simulated 15 by software EnergyPlus. The investigation shows that the PH-WI gives the best results. The RH- 16WOI has the largest energy consumption, and the largest pollutant emission. However, the PH-WI 17 requires the highest investment. 18 Nomenclature 20 A = area of heat emitters, m 2 21 E = energy, J/year 22 f = specific cost, €/m 2 23 42 el = electricity, 43 i = number of zone, 44 in = inlet, 45 ng = natural gas, 46 o = outside, 47 sys = system, 48 TOT = total, 49 w = water, 50 Abbreviations 51 PH-WOI = panel heating system without additional thermal insulation 52 PH-WI = panel heating system with additional thermal insulation 53 RH-WOI = radiator heating system without additional thermal insulation 54 RH-WI = radiator heating system with additional thermal insulation 55 SHGC = solar heat gain coefficient 56 UFAD = underfloor air distribution 57 58 65 In the literature, there are many papers dealing with investigations of the low temperature radiant 66 systems and their comparison with other heating systems regarding energy consumption and 67 obtained thermal comfort. Chen [1] compares the thermal comfort and the energy consumption 68 among a ceiling radiant heating system, a radiator heating system and a warm air heating system by 69 using airflow program Phoenics-84 and air-conditioning load program Accuracy. Haddad et al. [2] 70 compares the performance of a forced-air and a radiant floor residential heating system connected to 71 solar collectors. Raftery et al. [3] compares the performance of a joint underfloor air distribution 72 (UFAD) and radiant hydronic system with a typical only UFAD system. Imanari et al. [4] compares 73 a ceiling panel heating system in conjunction with an air-conditioning system and a conventional 74 air-conditioning system in term of thermal comfort, energy efficiency and cost efficiency. Stetiu [5] 75shows that using a radiant cooling system instead of a traditional all-air system in office space could 76 save on average 30% of the energy consumption. Nobody compared the radiant wall heating 77 system with other heating systems in terms of energy, economy, and environmental influence. 78The basic aim of this paper is to compare the radiant wall heating system with the radiator heating 79 system in terms of energy, economy, and environmental influence. During this research, the 80 operations of f...

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“…For instance, the radiant floor heating system (RFHS) is an embedded surface heating system [3], which provides a more uniform temperature distribution than conventional heating systems [4][5][6]. This system can improve indoor thermal comfort efficiently while exhibiting great potential for integration with renewable sources of energy [7,8]. The RFHS effectively harnesses the thermal capacity of a building's structure, offering several advantages, including enhanced thermal comfort, reduced energy consumption, quiet operation, and space efficiency [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Effect on the Thermal Properties of Building Mortars with Microencapsulated Phase Change Materials for Radiant Floors

Li,

Xu,

Tao

2023

Buildings

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The use of slag silicate cement mortar as a thermal mass layer for radiant floor heating systems holds significant potential for active thermal energy storage systems in buildings. The main objective of this article is to experimentally test the thermal performance of slag silicate cement mortar thermal storage blocks after the addition of phase change materials. The present study focuses on investigating the thermal performance of thermal storage blocks made of slag silicate cement mortar that incorporates a microencapsulated phase change material (mPCM). The mPCM consists of particles of paraffin-coated resin, which are uniformly distributed in the mortar. The analysis revealed that the introduction of mPCM particles into the mortar decreases the bulk density by approximately 9.4% for every 5% increase in mPCM particles ranging from 0% to 20%. The results obtained utilizing the Hot Disk characterization method demonstrate that the mPCM particles significantly affect the thermal properties of the mortar. Particularly, the thermal conductivity and thermal diffusion coefficient of the SSC30 mortar with a 17.31 wt.% mass of mPCM particles decreased by 59% and 69%, respectively. The results of this study provide a basis for the application of RFHS end-use thermal storage layers.

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Comparison of the Performance of a Forced-Air and a Radiant Floor Residential Heating System Connected to Solar Collectors

Cited by 7 publications

References 4 publications

Field Study of a Radiant Heating System for Sleep Thermal Comfort and Potential Energy Saving

Field Study of a Radiant Heating System for Sleep Thermal Comfort and Potential Energy Saving

Energy, cost, and CO2 emission comparison between radiant wall panel systems and radiator systems

Effect on the Thermal Properties of Building Mortars with Microencapsulated Phase Change Materials for Radiant Floors

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