Experimental and numerical investigation of a heat recovery ventilation unit with phase change material for building facades için kapak resmi
Experimental and numerical investigation of a heat recovery ventilation unit with phase change material for building facades
Başlık:
Experimental and numerical investigation of a heat recovery ventilation unit with phase change material for building facades
Yazar:
Pekdoğan, Tuğçe, author.
Yazar Ek Girişi:
Fiziksel Tanımlama:
xx, 238 leaves: color illustrations, bcharts;+ 1 computer laser optical disc.
Özet:
This thesis presents a wall-integrated HRV unit design that stores latent heat thermal energy (LHTES). The system’s performance is tracked through experimental and numerical studies. The experimental tests of the unit took place in a controlled environment, where two HRV units are inside two wall-integrated ducts. The wall divides two conditioned spaces that represent indoors and outdoors. In one set of experiments, the commercially available system that stores sensible heat thermal energy (SHTES) with ceramic block. On another set of experiments, the newly designed LHTES system with the staggered tube bundle that contains phase change material (PCM). SHTES system shows the best performance in 2-minute, supply efficiency is 82% and exhaust efficiency is 67%. LHTES system shows the best performance in 20-minute and supply efficiency is 55% and exhaust efficiency is 30%. Numerical parametric studies on the HRV systems use the commercial CFD software ANSYS-FLUENT. These studies include the detailed flow and heat transfer analyses and the optimum operating times for two systems. As a result of these studies, the CFD results show good agreement with the experimental results. At the end of the thesis, the ability to increase the capacity of the HRV unit with PCM was investigated. In addition, the simulations for different climatic data were studied. According to the results, 12mm longitudinal, 12mm transverse pitch size for the ∅4.76mm tube is the most efficient system with total heat capacity of 45.77kJ. In addition, for different climates simulations, LHTES unit can be used throughout the year in Singapore.
Tek Biçim Eser Adı:
Thesis (Doctoral)--İzmir Institute of Technology:Architecture.

İzmir Institute of Technology: Architecture --Thesis (Doctoral).
Elektronik Erişim:
Access to Electronic Versiyon.
Ayırtma: Copies: