Experimental and Numerical Study on Heat Pipe Assisted PCM Storage System
Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
In this study, thermal performance, energy storage and cooling capacity of a heat pipe assisted Phase Change Material (PCM) storage system have been investigated experimentally andnumerically. The heat pipe assisted PCM storage system can store and release energy efficiently.Heat pipe as a two-phase heat transfer device with very high thermal conductivity can beemployed to transfer heat at a high rate and very low-temperature difference. The core ideareferred to this system is to improve the capability of storing and releasing energy at PCMstorage system by using heat pipe. In order to study the effect of using heat pipe on energy storage system performance andminiature cooling applications, two different test rigs were built to investigate melting andsolidification processes. In addition, a numerical analysis of a heat pipe assisted PCM storagesystem has been performed. The two systems were modeled using Gambit and Fluent softwareand validated by experimental results. Results of case I indicate that it is beneficial for the energy storage system to use heat pipe toincrease the heat transfer rate significantly. In other words, the charging and discharging (heat absorption/release) of the storage system can happen faster with a higher power. Considering the case II, which is designed for the miniature cooling applications, it is found thatthe system can contribute to cooling process up to 86.7%.
Keywords: heat pipe; phase change materials; heat transfer; melting and solidification
Place, publisher, year, edition, pages
2015. , 76 p.
Engineering and Technology
IdentifiersURN: urn:nbn:se:kth:diva-172844OAI: oai:DiVA.org:kth-172844DiVA: diva2:850104
Master of Science - Innovative Sustainable Energy Engineering