In this study, the feasibility of using thermal buffering enhanced with phase change materiaL (PCM) to enable heat pump load shifting for a typical UK dwelling was investigated by comparing the performance of a buffered, load-shifted heat pump against a reference case. The impact of load shifting on a larger population of heat pumps was also explored. The results indicate that with adequate buffering the operation of a domestic heat pump can be wholly moved to off-peak periods without adversely affecting space or hot water temperatures. The volume of the buffer required could be more than halved using PCM. However, load shifting was associated with a significant energy penalty that negated any economic benefits accruing from a switch to off peak electricity. The study also showed that load shifting of populations of buffered heat pumps could exacerbate peak loading no the electrical network rather than reducing it.
|Number of pages||8|
|Publication status||Published - 25 Aug 2013|
|Event||13th Building Simulation Conference, BS2013 - Chambéry, France|
Duration: 25 Aug 2013 → 28 Aug 2013
|Conference||13th Building Simulation Conference, BS2013|
|Period||25/08/13 → 28/08/13|
- performance assessment
- phase changes
- thermal buffering
- domestic electricity load
Kelly, N., & Tuohy, P. G. (2013). Simulation based performance assessment of phase change enhanced thermal buffering for domestic heat pump load shifting. 2596-2603. Paper presented at 13th Building Simulation Conference, BS2013, Chambéry, France.