Temperature fluctuations in the place of use are reduced as well as the temperature peaks maximum-minimum between day-night are reduced. Heat storage device can regulate solar fresh air temperature and extend the supply hours in winter. In this paper, a kind of thermal storage exchanger using phase change material was established and experimentally investigated. Capric acid was used as the phase change material and differential scanning calorimetry tests with extremely slow heating rate were applied to show its thermal characteristic with improved accuracy. A new method of adding low-cost float stones was used to increase the thermal conductivity of the phase change material. Temperature variations of phase change material and the inlet and outlet of the thermal storage exchanger were measured. It is proved that float stones are quite helpful for the performance enhancement. Using the thermal storage exchanger, the highest temperature of fresh air getting in the room changed from 51 to 32·8°C when the outside temperature was between −9 and 0°C, and obviously more hours of providing fresh air was achieved.
References
- Bioclimatic design, Principles and practices by Donald Watson
- Vernacular Architecture: Towards a Sustainable Future by C. Mileto, F. Vegas, L. García Soriano, V.
- Building the solar home, Department of housing and urban development of Washington D.C.
- A survey of passive solar buildings, AIA Research
- http://architectureindevelopment.org
- Natural Energy and Vernacular Architecture: Principles and Examples with Reference to Hot Arid Climates (1986)
- THERMAL ENERGY STORAGE IN NATURAL STONE TREATED WITH PCMs Romero-Sánchez, M.D.* (1), Founti, M. (2), Guillem-López, C. (1), López-Buendía, A.M.(1) 1 AIDICO. Asociación De Investigación de Las Industrias de la Construcción. Camí de Castella, 4. 03660 Novelda. Alicante. Spain. 2 National Technical University of Athens, School of Mechanical Engineering, Lab. of Heterogeneous Mixtures and Combustion Systems, Heroon Polytechniou 9, 15780 Zografou, Greece
- Phase Change Materials (PCMs) - Treated Natural Stone for Thermal Energy Storage in Buildings: Influence of PCM Melting Temperature Romero-Sánchez, M.D. AIDICO, Technological Institute of Construction, Camí de Castella, 4, 03660 Novelda, Alicante, Spain (email: md.romero@aidico.es) Rodes, J.M. AIDICO, Technological Institute of Construction, Camí de Castella, 4, 03660 Novelda, Alicante, Spain Guillem-López, C. AIDICO, Technological Institute of Construction, Camí de Castella, 4, 03660 Novelda, Alicante, Spain López-Buendía, A.M. AIDICO, Technological Institute of Construction, Camí de Castella, 4, 03660 Novelda, Alicante, Spain
- Thermal storage exchanger based on phase change material applying to solar fresh air systemG. Feng,K. Huang,L. Zhao,H. Li,X. Xu,R. Niu &H. Xie show lessPages S5-530-S5-535 | Received 20 Oct 2014, Accepted 18 Dec 2014, Published online: 30 May 2015