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▪ Revise hydronic systems

▪ Exploit potential of new technologies: IoT, wet-rotor pump (BLDC motor}

▪ Develop a hydronic system for Industry 4.0 era

▪ The project is subsidized by the Technology Agency of the Czech Republic,

programme Théta, under project TK01020024 Hydronics 4.0

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▪ Two pipe heating system

▪ Constant heat exchanger (HX) supply

temperature

▪ Pressure balancing

▪ Supply (hot) and return (cold) piping

▪ One-pipe heating system with valves

▪ Varying HX supply temperature

▪ Pressure and temperature

balancing/interactions

▪ Less pipingT1>T2>Tn

T1T2 Tn

T1 =T2 =Tn

T1 T2 Tn

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1. Main pipe

2. Secondary circuits

3. Double-tee branch

▪ Hydraulic separation

4. Secondary pump

= flow = heat delivery

Boile

r

Boile

r

Laing

(1)

(2)

(3)

(4)

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Idea

▪ Pump, 2 temperature sensors

▪ Single integrated unit, 1 cable (power + communication)

▪ Algorithms of optimal estimation, control & diagnostics

Functionality

▪ El. power flow

▪ Flow + temp. difference heating power, hydraulic diag.

▪ Heating power heat metering, thermal diagnostics

▪ Heating power digital twin

▪ Digital twin energy optimization, analytics & diagnostics

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He

atd

eliv

ery

le

vel

Bu

ildin

gle

vel

Flow [l/h]

El. power

[W]

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• CAD, CFD

• 3D print

• Failures

• Manufacturability

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▪ Testbed

▪ one-/two-pipe heating system

▪ Goal: test pump design and algorithms

▪ Communication - UPI

▪ Unipi PLC

▪ Interface between Unipi and

Matlab/Simulink, MQTT

UPI Server

Matlab / Simulink

UPI Client

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▪ Manufacturable body design

▪ Electronics prototype

▪ Pumping one-pipe network design tool

(open source)

▪ Flow estimation accuracy ~ 30 l/h

▪ Primary-to-secondary impact max. 8 l/h

▪ Fluid detection

▪ Water detection - power of test 95%

▪ Concentration estimation error ~ 5%

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