Patent ID: 8787742

Claim:
A fluid heating system for providing fluid on-demand at consistent desired precise temperatures comprising: a closed loop with a heating system, an air separation chamber with an air vent valve, a circulation pump, a small fluid accumulation tank, a flow indicating sensor and plumbing forming the closed loop; a system inlet allowing entry of incoming fluid to the closed loop; an incoming temperature sensor after the system inlet in the closed loop; a system outlet that allows heated fluid to exit the closed loop; a fluid feed temperature sensor in the closed loop adjacent to the system outlet, which measures the temperature of the fluid just before the fluid exits the closed loop; a control system that receives input from the flow indicating sensor, the incoming temperature sensor and the fluid feed temperature sensor to control the heating system; and a check valve between the system inlet and the system outlet that avoids incoming fluid from being mixed with heated outlet fluid; wherein the control system determines a modulated power setting level to enable the heating system to supply proper input into the closed loop to again recover to set point with the following calculation: Watts ⁢ ⁢ Required = ( SP - M ) × GPM × 1000 ⁢ ⁢ watts 1 ⁢ ⁢ kw × 1 6.824 ⁢ ° ⁢ ⁢ F . ⁢ GPM ⁢ / ⁢ kw Where: SP=Set Point Value in ° F. M=Mix Temp. @ the incoming temperature sensor in ° F. GPM=Flow around the Closed Loop in gallons/minute Then: % ⁢ ⁢ Output ⁡ ( Required ⁢ ⁢ Power ⁢ ⁢ Level ) = Watts ⁢ ⁢ Required Watts ⁢ ⁢ Available Where: Watts Available is a program value determined at build.