I think heat storage for domestic use is a red herring--the point isn't to replace all forms of gas/electric heating, but rather to reduce the usage. So, all th

I think heat storage for domestic use is a red herring--the point isn't to replace all forms of gas/electric heating, but rather to reduce the usage. So, all the turbine heat is essentially consumed immediately, and the conventional methods kick in to fill the gaps. The easiest way to accomplish this is feed your lukewarm turbine water into the water heater intake. Every joule added to the input is a joule the gas heater doesn't have to deliver.