A Kilowatcher meter will tell your avg. energy usage, just like your Gas Co. meter. Radiant heat works differently on our bodies, tho.
An outfit with a battery & lined with heat tape would work, but who sells these things?
"Abstract
Heated clothing includes:
(a) multiple clothing sections adapted to cover different portions of the human body,
(b) electrical wires carried by such sections and including bus wires and heater wires, and
(c) circuitry for controlling battery powered electrical current flow to such wires, and including switch structure connected in series with one or more of the heater wires for interrupting current flow thereto without requiring disconnection of bus wires."
Ask & ye shall receive!
An outfit with a battery & lined with heat tape would work, but who sells these things?
"Abstract
Heated clothing includes:
(a) multiple clothing sections adapted to cover different portions of the human body,
(b) electrical wires carried by such sections and including bus wires and heater wires, and
(c) circuitry for controlling battery powered electrical current flow to such wires, and including switch structure connected in series with one or more of the heater wires for interrupting current flow thereto without requiring disconnection of bus wires."
Ask & ye shall receive!