Adelman stated that a thermostat is not an effective way to
control the amount of heat entering the room within the heating
system.
MacCluer [3] recommended proportional flux modulation,
adjusting heat transfer from the heat water supplied, and Leigh [4]
demonstrated that proportional flux modulation had a better
reaction in a transient state than an outdoor reset control.
Kim [5] classified the existing controls of a slab radiant
heating system according to control factors, and analyzed
through tests the ability of each control to effect stability of
temperatures of the room and the slab. Yeo [6] studied problems
for an operating system, and suggested an optimal hot-water
distribution of the pipe network for a radiant slab heating system
by evaluating the abilities of the control and energy of the system
in each room.
Furthermore, Cho [7] studied a predictive control strategy as
a means of improving energy efficiency of an intermittently heated
radiant floor heating system. Sattari [8] carried out a parametric
study on radiant floor heating system performance.
These radiant floor heating methods are all interlocked with an
automatic thermostatic valve to maintain a comfortable indoor
temperature.
However, most of these studies only conducted a parameter
study on system transformation and supply methods of heated
water, omitting the application of an automatic thermostatic
valve.