Algorithm of Room Input Exergy and Application Analysis of Exergy Cost for Air Carrying Energy Radiant Air-conditioning System
Abstract
Based on the heat transfer process of orifice plate and the exergy analysis method of traditional mental radiant panel and convective air-conditioning terminal, the algorithm of room input exergy for air carrying energy radiant air-conditioning system(ACERS) was proposed. The exergy cost analysis model of ACERS was established by exergy cost analysis method. The unit exergy cost of three radiant air-conditioning systems including ACERS, capillary radiant air conditioning system and a combined system of split air conditioning with floor radiant air conditioning,was compared under the premise of thermal comfort. The results show that the unit exergy costs of capillary radiant air conditioning system are 1~3 times higher than that of ACERS in office buildings. The unit product exergy cost for the year of a combined system of split air conditioning with floor radiant air conditioning is 1.2 times higher than that of ACERS in residential building. It is found that the overall exergy economic performance of ACERS is superior to the other two radiant air-conditioning systems, which is of great significance for future engineering application of ACERS.
Keywords: air carrying energy, exergy, exergy cost analysis, exergy economic
Full Text:
PDFReferences
LIU Y H, LIU X,BANG X K, et al. Energy saving technology of the HVAC system [M]. Beijing:Mechanical Industry Press,2015:V. (In Chinese)
BANG C G, MA X F,Y AN S Q, et al. Overview on development and research of radiant air conditioning system[J]. Building Energy & Environment, 2014, 33 (5):47—50 (In Chinese)
GONG G C, YANG H B, SU H,et al. The research on simplified algorithm of radiative heat transfer for air carry energy radiant air conditioning terminal system [J]. Journal of Hunan University (Natural Sciences), 2013, 40 (12):31—38 (In Chinese)
XU C B, GONG G C, YANG H B, et al. Numerical study of moisture condensation on pore panels of air carrying energy radiation air–conditioning system [J]. Building Science, 2014, 30 (8):79—84 (In Chinese)
GONG G, LIU J, MEI X. Investigation of heat load calculation for air carrying energy radiant air–conditioning system[J]. Energy and Buildings, 2017, 138: 193—205.
BU F H. Experimental research for application based on radiation terminal of air carrying and storing energy [D]. Changcha: College of Civil Engineering, Hunan University, 2015 :15—27 (In Chinese)
Ministry of Housing and Urban–rural Construction of the People´s Republic of China. GB 50736—2012 Design specification for civil building heating ventilation and air conditioning [S]. Beijing:China Building Industry Press, 2012 :7 (In Chinese)
HAN J, GONG G C, YANG H B, et al. Study on thermal environment and energy transfer on air –borne energy radiant terminal in large space [J]. Building Science,2017,33(10): 113— 119 (In Chinese)
LOZANO M A, VALERO A. Theory of the exergetic cost [J]. Energy, 1993, 18 (9):939—960.
GONG G C, ZENG B, CHAGN S J. Scheme–selection optimization of air –conditioning heating and cooling system based on exergy method [J]. Journal of Hunan University (Natural Sciences), 2005, 32 (5):16—19 ( In Chinese)
HU P F, LI F R, SUN Q M,et al. Thermodynamics analysis of the economy of GSHP systems [J]. Journal of Huazhong University of Science and Technology (Natural Science Edition), 2009, 37 (4): 97—100 (In Chinese)
ALDANMA, KECEBASA, YAMANDARADENIZN. Microeconomic analysis of a district heating system for geothermal energy using specifies exergy cost method [J]. Energy, 2013, 60:426—434.
Refbacks
- There are currently no refbacks.