Pulse Modulated Heating, Ventilation, and Air Conditioning (HVAC) Control
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United States of America
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Issued Date -
Jan 2, 2020
app pub date -
Jun 27, 2018
filing date -
Jun 27, 2018
priority date (Note) -
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Abstract
An underfloor heating (UFH) system limits the floor temperature of an environmental entity (for example, a room) by pulsing (pulse modulating) the flow rate through a hydronic emitter (circuit) heating the environmental entity. Once the heated water fills the circuit during time interval Ton, the flow is stopped for a fixed time Toff before allowing the cycle to repeat until a target temperature is reached. The ratio of flow/no flow (Ton/Toff) may be a proportional lower floor temperature compared to a traditional circuit supporting a constant water flow. The UFH system may heat a plurality of rooms, each having different floor temperature limitations. The floor temperatures may be limited differently by pulsing the hydronic emitters (circuits) rooms differently.
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