ThermoSmart G1 system is used to automate
cascading boiler room’s operation that works in a gas station. The main task of
the controller is keeping a gas temperature set point after reduction at a
certain level. The system can work independently or cooperate with other
systems applied in the facility with use of MODBUS RTU standard. Controlling
with ThermoSmart G1 system is done
locally by means of switches located on the elevation of the cabinet and
control panel and/or remotely via SCADA system.
Properties of the
work of cascading boiler room in order to keep a gas temperature set point
after reduction at a certain level,
(from SCADA system) or local (by means of switches located on the elevation of
the cabinet and control panel) parameterisation and monitoring of particular
parameters of ThermoSmart G1 system,
protocol MODBUS RTU,
of adjusting the boilers’ work of cascading boiler room,
of adjusting the efficiency of circulation pump(s) in scope of 0-100%,
of adjusting the position of mixing valve(s) in scope of 0-100% of opening,
of adjusting valves that cut off the supply of heating medium to boilers,
implemented programme adjusts automatically to conditions in the facility
(temporary increased flow, atmospheric conditions, etc.),
casing of a control cabinet is always located on one of the boiler room’s walls
or in the controlling and measuring equipment and automatics room,
supply 230V or 24V – selected individually to the needs and requirements.
ThermoSmart G1 system provides automatic keep of a
gas temperature set point after reduction at a certain level. The program
implemented in ThermoSmart controller
monitors particular parameters of boiler room’s work (including gas temperature
after reduction) in real time and adjusts technological devices of the boiler
room in such a way that gas temperature after reduction is kept at the set
level. The controller can work with a number of technological devices which
enable the execution of the following functions: adjusting the efficiency of a
pump in scope of 0-100%, adjusting the opening of mixing valve in scope of
0-100%, controlling valves that cut off boilers, controlling the keep of pressure
of heating medium in the system.
ThermoSmart G1 system consists of the following devices:
working in a cascade,
valves at boilers,
temperature sensors in the boiler room,
temperature sensors in Exd casings in gas part of the station (after gas
and heating medium pressure transducers.
ThermoSmart G1 system has the following work modes:
Automatic work mode
In this work mode the system selects
and calculates all work parameters automatically and adjusts the work of system
to the prevailing conditions. The user sets the gas temperature after reduction
that ought to be kept by ThermoSmart G1
system remotely (from SCADA system) or locally (by means of control panel). ThermoSmart controller monitors all
parameters of boiler room’s work, including gas temperature after reduction, in
real time. PID regulator implemented in the controller controls technological
devices of the boiler room in such a way that temperature’s value set by the
user is kept. The work of boilers’ cascade is done through giving priorities to
the boilers. The superior boiler (master type) works and strives to keep gas
temperature after reduction at the set level, the remaining boilers support its
work and they are switched on if there is the demand for larger amount of
thermal energy. The user can choose remotely (from SCADA system) or locally (by
means of control panel) which boiler is the boiler of master type at a given
moment. Moreover, there is a possibility of controlling the length of period
during which the boiler ought to work as the master boiler. Having entered the
value “number of days” for the boiler by
the user, it will work for the indicated number of days and then the function
of the master boiler will be taken over by the boiler of next priority. In case
of using many circulation pumps, the same principle was applied.
Manual work mode
In this work mode the user controls
the technological devices.
After switching the switches located
on the elevation of the cabinet in the position “HAND”,
the user takes control over the device and the controller cannot make any
decisions concerning the device.
The user set the following switches
in the position “HAND”: “Boiler 2” and “Pump 1”.
In this case, the controller will still control the remaining devices whose
switches are in the position “AUTO”. On the other hand, Boiler 2 will keep the
internal temperature that was set on the boiler (see Operation and Maintenance
Manual of the boiler), in this case, pump 1 will be switched and will work
according to factory settings of the pump (see Operation and Maintenance Manual
of the pump).
While setting all switches in the
position “HAND”, the user takes full control
over technological devices of the boiler room. ThermoSmart controller will only make essential measurements which
will be visualised on a control panel and appropriate data will be sent to the dispatching
centre. Setting all switches in the
position “HAND” is recommended in case of
of ThermoSmart G system:
Power supply of ThermoSmart G1
230V AC +10% -
24V DC +/-
Other data of ThermoSmart G1 system:
Each ThermoSmart controller is equipped with: expansion modules of
inputs/outputs (selected individually and customised) and auxiliary memory.
Work temperature: 0oC - +50oC
Storage temperature: -20oC - +60oC
Relative humidity: 10% - 90% at 40°C (without condensation)
Accuracy of temperature regulation: depended on the prevailing
conditions in the facility, displayed on a control panel (±0,01 °C).
Each ThermoSmart G1 system
can be customised.