Pumped heat energy storage system with charge cycle thermal integration

A system comprising:

• a pumped-heat energy storage system (“PHES system”), wherein the PHES system is operable in a charge mode to convert electricity into stored thermal energy and is further operable in a generation mode to convert at least a portion of the stored thermal energy into electricity, wherein the PHES system comprises, when operating in the charge mode, a working fluid path circulating a working fluid through, in sequence, at least a compressor system, a hot-side heat exchanger system, a turbine system, a cold-side heat exchanger system, a preheater, and back to the compressor system;
• and
• a fluid path directing a hot fluid from a heat source external to the PHES system through the preheater, and
• wherein the working fluid thermally contacts the hot fluid within the preheater, thereby transferring heat from the hot fluid to the working fluid.

A system comprising:

• a pumped-heat energy storage system (“PHES system”), wherein the PHES system is operable in a charge mode to convert electricity into stored thermal energy and is further operable in a generation mode to convert at least a portion of the stored thermal energy into electricity, wherein the PHES system comprises, when operating in the charge mode, a working fluid path circulating a working fluid through, in sequence, at least a compressor system, a hot-side heat exchanger system, a turbine system, a cold-side heat exchanger system, a preheater, and back to the compressor system;
• a first fluid path directing a first hot fluid from a heat source external to the PHES system through a reheater, wherein the working fluid path through the turbine system comprises circulating the working fluid through, in sequence, a first turbine, the reheater, and a second turbine, and wherein the working fluid thermally contacts the first hot fluid within the reheater, thereby transferring heat from the first hot fluid to the working fluid;
• and
• a second fluid path directing a second hot fluid from the heat source external to the PHES system through the preheater, wherein the working fluid thermally contacts the second hot fluid within the preheater, thereby transferring heat from the second hot fluid to the working fluid.