Experimental and numerical investigation of the radiant panel heating system using scale room model

Seyam, Shaimaa; Huzayyin, A.S.; El-Batsh, Hesham M.; Nada, S.A.

doi:10.1016/j.enbuild.2014.07.003

Cited by 38 publications

(19 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Finally, Rhee and Kim reviewed the last 50 years of research [26]. They found that more attention was given to elaborating estimation methods and mathematical simulation models [27], as well as to evaluating thermal behaviour and energy savings, than to application system innovations [28,29].…”

Section: Ppr Capillary Tube Matsmentioning

confidence: 99%

Healthy Climate and Energy Savings: Using Thermal Ceramic Panels and Solar Thermal Panels in Mediterranean Housing Blocks

2018

View full text Add to dashboard Cite

Radiant surface conditioning systems based on capillary tube mats not only provide high standards of comfort, but they also generate substantial energy savings. These systems allow for using renewable energies such as solar thermal panels because they function with water at moderate temperatures—lower in winter and higher in summer—compared to fan-coil systems or hot water radiator systems. Moreover, in summer, they can be combined with solar cooling systems based on lithium chloride or absorption systems based on lithium bromide, which enable the cooling of water at 15–16 °C by means of solar thermal panel energy collection. This further reduces the annual energy. The purpose of this study was to examine the application of thermal ceramic panels (TCP) containing prolipropylen (PPR) capillary tube mats, in residential buildings in the Spanish Mediterranean. The water distribution system was set up individually from a heat pump and was combined with a community system of solar thermal panels. After monitoring a home over a complete one-year cycle, the annual energy demand was quantified through simulations, based on both the radiant system and the VRV system, as well as in combination with a thermal solar panel system. TCP panels reduced the annual energy demands by 31.48%, and the additional investment cost of €11,497 could be amortized over 23.31 years. The combination of TCP panels with 18.5 m2 of solar thermal panels reduced the annual energy demand by 69.47%, and the investment of €20,534 of additional cost could be amortized over 15.67 years. The energy consumptions of installation elements were also comparatively quantified.

show abstract

Section: Ppr Capillary Tube Matsmentioning

confidence: 99%

Healthy Climate and Energy Savings: Using Thermal Ceramic Panels and Solar Thermal Panels in Mediterranean Housing Blocks

2018

View full text Add to dashboard Cite

show abstract

“…1-2 Isentropic compression in a compressor 2-3 Constant-pressure heat rejection in a condenser [3][4] Throttling in an expansion device 4-1 Constant-pressure heat absorption in an evaporator…”

Section: Vapor-compression Refrigeration Systemmentioning

confidence: 99%

“…The vapor refrigeration system is a closed cycle where it starts and ends at state 1. This type of refrigeration system can be used for refrigerators, inside the air conditioners as split air conditioners, and separate as in radiant cooling systems [3,4] and air-to-air systems [1].…”

Section: Vapor-compression Refrigeration Systemmentioning

confidence: 99%

Energy and Exergy Analysis of Refrigeration Systems

Seyam¹

2020

Low-Temperature Technologies

Self Cite

View full text Add to dashboard Cite

Refrigeration systems have the priority in design for residential and industrial applications. The chapter includes five major refrigeration systems: vaporcompression refrigeration; ammonia-water absorption refrigeration; gas refrigeration where standard air is the most popular refrigerant; multi-pressure refrigeration including multistage, cascade, and multipurpose refrigeration system; and heat pump systems. Energy and exergy analysis has been presented for most of the systems. The energetic and the exergetic COP for each system are presented. Renewable energy sources are also discussed including geothermal, solar, and wind energy, a with combination with refrigeration systems in different industrial and residential applications. The overall efficiency of the renewable systems is achieved to be more than 50% providing promising solutions for energy use and having a low environmental impact.

show abstract

“…Because, usage of mentioned plausible thermal boundary conditions result in turbulent flow over the ceiling, -due to Rayleigh numbers greater than 10 9 -, a turbulence model has been chosen. The type of k-ɛ model was determined as the k-ɛ RNG model, in accordance with the proposal of Seyam et al [24]. The underrelaxation factors pertaining to density, momentum, turbulence kinetic energy turbulence dissipation rate, turbulent viscosity and energy have been selected 1.0, 2.0, 0.8, 0.8, 1 and 0.9, respectively.…”

Section: Cfd Approachmentioning

confidence: 99%

Determination of Convective, Radiative, and Total Heat Transfer Characteristics Over a Radiant Heated Ceiling: A Computational Approach

Açıkgöz¹

2019

Journal of Thermal Engineering

View full text Add to dashboard Cite

In the present study, a computational investigation is carried out within a model room of which dimensions has also been given in international standards for experimental approaches. In accordance with the experimental standards, the analyses are realized at the room dimensions of (L x H x W= 4 x 3 x 4 m), and at the thermal boundary conditions of (Tc= 35-50 o C), (Tw= 15-24 o C), (Tf= 15-24 o C). As a result of iterations conducted using a computational fluid dynamics package program code, each corresponding to a case study, convective, radiative, and total heat fluxes from radiant heated ceiling are obtained, and afterward using relevant reference temperature proposed in the literature, heat transfer coefficients pertaining to convection, radiation, and total heat transfer have been found. In conclusion, average heat flux values of 95.83 Wm-2 and 17.49 Wm-2 are gained through the examined radiant heated ceiling, by means of radiation and convection, respectively. This denotes that roughly 85% of total heat transfer from the ceiling arises through radiation that is very compatible with the relevant literature. Finally, spanning the entire different case studies, average convective, radiative, and total heat transfer coefficients of 1.

show abstract

Experimental and numerical investigation of the radiant panel heating system using scale room model

Cited by 38 publications

References 17 publications

Healthy Climate and Energy Savings: Using Thermal Ceramic Panels and Solar Thermal Panels in Mediterranean Housing Blocks

Healthy Climate and Energy Savings: Using Thermal Ceramic Panels and Solar Thermal Panels in Mediterranean Housing Blocks

Energy and Exergy Analysis of Refrigeration Systems

Determination of Convective, Radiative, and Total Heat Transfer Characteristics Over a Radiant Heated Ceiling: A Computational Approach

Contact Info

Product

Resources

About