Passive energy management through increased thermal capacitance.

Highlights: [•] The use of increased thermal capacitance (ITC) to reduce building cooling loads. [•] Water is circulated through a piping system in building walls or ceiling. [•] A building with and without ITC is simulated in TRNSYS. [•] ITC reduces the cooling load, especially when used in the ceiling. [Copyright &y& Elsevier]