Improvement in Performance of a Thermochemical Heat Storage System by Implementing an Internal Heat Recovery System

M. Gaeini, L. Saris, H.A. Zondag, C.C.M. Rindt

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Abstract

A lab-scale prototype of a thermochemical heat storage system, employing a water-zeolite 13X as the working pair, is designed and optimized for providing hot tap water. During the hydration process, humid air is introduced to the packed bed reactor filled with dehydrated zeolite 13X, and the released heat of adsorption heats up the air passing through the reactor. The hot outflow air is led to an air-to-water heat exchanger integrated in a water tank and heats up the water. The residual heat in the exhaust air is used to preheat the reactor inflow in an air-to-air heat exchanger. The temperatures of all system components are measured, and the thermal powers and heat losses are calculated. Experiments are performed in the system with and without using the heat recovery, and improvement in performance of the heat storage system is investigated.
Original languageEnglish
Title of host publicationProceedings of The 13th International Conference on Energy Storage
Publication statusPublished - May 2015
Event13th International Conference on Energy Storage (Greenstock 2015), May 19-21, 2015, Beijing, China - Beijing, China
Duration: 19 May 201521 May 2015
http://greenstock2015.csp.escience.cn/dct/page/1

Conference

Conference13th International Conference on Energy Storage (Greenstock 2015), May 19-21, 2015, Beijing, China
Abbreviated titleGreenstock 2015
CountryChina
CityBeijing
Period19/05/1521/05/15
Internet address

Keywords

  • Thermochemical seasonal heat storage
  • Built environment application
  • Domestic hot water
  • Heat recovery
  • Zeolite 13X

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    Gaeini, M., Saris, L., Zondag, H. A., & Rindt, C. C. M. (2015). Improvement in Performance of a Thermochemical Heat Storage System by Implementing an Internal Heat Recovery System. In Proceedings of The 13th International Conference on Energy Storage