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Study on Thermal Performance of PCM Trombe Wall System

Author: WuYanTing
Tutor: YangYongPing
School: North China Electric Power University (Beijing)
Course: Heating,Gas Supply, Ventilation and Air Conditioning Engineering
Keywords: 特朗勃wall Accumulator PCMs CFD Eddy heat transfer enhancement
CLC: TU551
Type: Master's thesis
Year: 2009
Downloads: 89
Quote: 0
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Abstract


In this paper, CFD package Fluent, phase change heat storage collector wall system simplifies solar establish set accurately reflect the thermal characteristics of the system , a two-dimensional model , and steady - state and non- application of this model system steady-state simulations. Winter conditions, the width of the air passages , phase change material properties the channel opening switch control strategies for solar regenerative collector wall system thermal characteristics of phase change , and summer conditions were simulated . In addition, we also established a three - dimensional channel model , The initial simulation analysis of eddy heat transfer enhancement device on the system . Derived by simulation in winter conditions, the system on indoor heat supply with the trend of change in the width of the air passage , the results show that the conditions channel width is calculated for the system, the average for the highest heat in the 13-15cm ; phase transition temperature 48.5 ℃, the latent heat of a 208.80kJ/kg the phase change material system for a more gentle heat fluctuations over time , can satisfy the heating needs of the room ; appropriate control strategies can greatly improve the system for the heat , but also the development of different control strategies for different user needs in order to meet user demand for heat distribution ; summer conditions, the air channel built - in shutter can effectively prevent the phase change material plate overheating the system can reduce the cooling load of Heat Transfer ; installation of phase change material plate surface eddy heat transfer enhancement device can effectively increase the convective heat transfer coefficient of the phase change material plate and channel air .

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