Static Temperature Guideline for Comparative Testing of Sorption Heat Storage Systems for Building Application

Abstract

Sorption heat storage system performance heavily depends on the operating temperature. It is found that testing temperatures reported in literature vary widely. In respect to the building application for space heating, reported testing temperatures are often outside of application scope and at times even incomplete. This has led to application performance overestimation and prevents sound comparison between reports. This issue is addressed in this paper and a remedy pursued by proposing a static temperature and vapor pressure-based testing guideline for building-integrated sorption heat storage systems. By following this guideline, comparable testing results in respect to temperature gain, power and energy density will be possible, in turn providing a measure for evaluation of progress.

Two-Stage Solar–NaOH Thermochemical Heat Pump Heating System for Building Heating: Operations Strategies and Theoretical Performance

“…With a spiral-finned reactor, Fumey et al [39] achieved a theoretical energy density of 435 kWh/m 3 in a lab-scale module with a single-stage process from a 27% to 53% wt solution range. Storage performance is highly dependent on the operation conditions of the sorption process [41]. A higher energy density is possible with a greater range of solution concentrations.…”