Abstract
Increasing energy consumption in residential and public buildings requires development of new technologies for thermal energy production and storage. One of possibilities for the second listed need is the use of phase change materials (PCMs). This work is focused on solutions in this area and consists of two parts. First one is focused on different designs of thermal energy storage (TES) tanks based on the phase change materials. The second part is the analysis of tests results for TES tank containing shelf and tube heat exchanger and filled with phase change material. Thermal energy storage tank is analyzed in order to use it in domestic heating and hot utility water installations. The aim of this research was to check the applicability of phase change material for mentioned purpose. Results show that using phase change materials for thermal energy storage can increase amount of stored heat. The use of properly selected PCM and heat exchanger enables the process of thermal energy storing and releasing to become more efficient.
Highlights
It is noticeable that continuous economic and social growth forces development of energy around the world, including Poland
It is related to phase change materials (PCMs) phase transition which can be observed in the temperature range: 51-55°C
This paper presents examples of PCM based heat exchangers applied for thermal energy storage tanks with its advantages and disadvantages
Summary
It is noticeable that continuous economic and social growth forces development of energy around the world, including Poland. Excess thermal energy can be stored and used later, when the needs are bigger It enables the reduction of waste heat, limits additional heat production, it has a positive impact on the environment and allows financial savings. One of them is based on the use of phase change materials (PCMs) and its latent heat. Phase change materials are substances characterized by the ability to store large amount of heat within small temperature range. This feature can be applied to store thermal energy or to regulate the ambient temperature. It is important to select PCM suitable for the application, considering phase transition temperature range and enthalpy. It is possible to improve work of requirements, advantages and disadvantages of this type of solution
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