[1] Wang Feng, Liang Caihua, Zhang Xiaosong,. Experimental study and energy saving analysisof a novel radiant ceiling heating system [J]. Journal of Southeast University (English Edition), 2015, 31 (1): 118-123. [doi:10.3969/j.issn.1003-7985.2015.01.020]

Copy

Experimental study and energy saving analysisof a novel radiant ceiling heating system()

Share：

Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

31

Issue:

2015 1

Page:

118-123

Research Field:

Energy and Power Engineering

Publishing date:

2015-03-30

Info

Title:

Experimental study and energy saving analysisof a novel radiant ceiling heating system

Author(s):

Wang Feng;  Liang Caihua;  Zhang Xiaosong

School of Energy and Environment, Southeast University, Nanjing 210096, China

Keywords:

radiant heating system;  capillary tube;  heating performance;  energy saving;  exergy efficiency

PACS:

TU831.6

DOI:

10.3969/j.issn.1003-7985.2015.01.020

Abstract:

In order to have an in-depth understanding of the metal ceiling radiant panel with capillary tubes, a radiant ceiling heating system is constructed to study the actual heating performance and thermal comfort by experiments. In addition, the energy saving potential of the novel heating system is discussed in terms of the COP(coefficient of performance)of the ground source heat pump and the exergy efficiency of the radiant terminal. The results indicate that the heating system shows high thermal stability and thermal comfort. When the system reaches a stable condition, the radiant heat transfer accounts for 62.7% of the total heat transfer, and the total heat transfer can meet the heating demands of most buildings. Compared to a radiant floor heating system, it offers advantages in a shorter preheating time, a lower supply water temperature and a stronger heating capability. The COP of the ground source heat pump is increased greatly when the supply water temperature is 28 to 33 ℃, and the exergy efficiency of the metal ceiling with capillary tubes is 1.6 times that of the radiant floor when the reference temperature is 5 ℃. The novel radiant ceiling heating system shows a tremendous energy saving potential.

References:

[1] Catalina T, Virgone J, Kuznik F. Evaluation of thermal comfort using combined CFD and experimentation study in a test room equipped with a cooling ceiling [J]. Building and Environment, 2009, 44(8): 1740-1750.
[2] Causone F, Corgnati S P, Filippi M, et al. Experimental evaluation of heat transfer coefficients between radiant ceiling and room [J]. Energy and Buildings, 2009, 41(6): 622-628.
[3] Tian Z, Yin X L, Ding Y, et al. Research on the actual cooling performance of ceiling radiant panel [J]. Energy and Buildings, 2012, 47: 636-642.
[4] Diaz N F, Lebrun J, André P. Experimental study and modeling of cooling ceiling systems using steady-state analysis [J]. International Journal of Refrigeration, 2010, 33(4): 793-805.
[5] Fonseca N. Experimental analysis and modeling of hydronic radiant ceiling panels using transient-state analysis [J]. International Journal of Refrigeration, 2011, 34(4): 958-967.
[6] Hao X L, Zhang G Q, Chen Y M, et al. A combined system of chilled ceiling, displacement ventilation and desiccant dehumidification [J]. Building and Environment, 2007, 42(9): 3298-3308.
[7] Rees S J, Haves P. An experimental study of air flow and temperature distribution in a room with displacement ventilation and a chilled ceiling [J]. Building and Environment, 2013, 59: 358-368.
[8] Andrés-Chicote M, Tejero-González A, Velasco-Gómez E, et al. Experimental study on the cooling capacity of a radiant cooled ceiling system [J]. Energy and Buildings, 2012, 54: 207-214.
[9] Hu R, Niu J L. A review of the application of radiant cooling & heating systems in Mainland China [J]. Energy and Buildings, 2012, 52: 11-19.
[10] Miriel J, Serres L, Trombe A. Radiant ceiling panel heating—cooling systems: experimental and simulated study of the performances, thermal comfort and energy consumptions [J]. Applied Thermal Engineering, 2002, 22(16): 1861-1873.
[11] Rahimi M, Sabernaeemi A. Experimental study of radiation and free convection in an enclosure with a radiant ceiling heating system [J]. Energy and Buildings, 2010, 42(11): 2077-2082.
[12] Tye-Gingras M, Gosselin L. Comfort and energy consumption of hydronic heating radiant ceilings and walls based on CFD analysis [J]. Building and Environment, 2012, 54: 1-13.
[13] American Society of Heating, Refrigerating and Air-conditioning Engineers. ASHRAE Standard 55—2004 Thermal environmental conditions for human occupancy [S]. Atlanta, GA, USA: ASHRAE, 2004.
[14] Zhang D L, Cai N, Wang Z J. Experimental and numerical analysis of lightweight radiant floor heating system [J]. Energy and Buildings, 2013, 61: 260-266.
[15] Kurazumi Y, Tsuchikawa T, Ishii J, et al. Radiative and convective heat transfer coefficients of the human body in natural convection [J]. Building and Environment, 2008, 43(12): 2142-2153.
[16] International Standards Organization. ISO 7730—2005 Ergonomics of the thermal environment-analytical determination and interpretation of thermal comfort using calculation of the PMV and PPD indices and local thermal comfort criteria [S]. International Organization for Standards, 2005.
[17] Buratti C, Ricciardi P, Vergoni M. HVAC systems testing and check: a simplified model to predict thermal comfort conditions in moderate environments [J]. Applied Energy, 2013, 104: 117-127.
[18] Ataei A, Yoo C K. Combined pinch and exergy analysis for energy efficiency optimization in a steam power plant [J]. International Journal of the Physical Sciences, 2010, 5(7): 1110-1123.

Memo

Memo:

Biographies: Wang Feng(1989—), male, graduate; Liang Caihua(corresponding author), male, doctor, professor, caihualiang@163.com.
Foundation items: The National Natural Science Foundation of China(No.51106023), the National Key Technology R&D Program during the 12th Five-Year Plan Period(No.2011BAJ03B14).
Citation: Wang Feng, Liang Caihua, Zhang Xiaosong. Experimental study and energy saving analysis of a novel radiant ceiling heating system[J].Journal of Southeast University(English Edition), 2015, 31(1):118-123.[doi:10.3969/j.issn.1003-7985.2015.01.020]

Common functions