Marcet Boiler | ThermoFlux - 7047
Product Overview
The Marcet Boiler ThermoFlux - 7047 is a benchtop thermodynamics experimental unit for demonstrating the pressure–temperature relationship of saturated steam in equilibrium with water, with the Marcet boiler saturation pressure curve determinable up to 10 bar (145 lb/in²). The stainless steel 304 pressure vessel of 5-litre capacity is fitted with three selectable 1000 W immersion heaters (1000–3000 W total), a Bourdon tube pressure gauge (−1 to 15 bar), K-type thermocouple (−100°C to 400°C), and analogue temperature sensor (0°C to 350°C). A multi-layer safety system comprising dual digital pressure switches (10 and 11 bar), a mechanical pressure relief valve (13 bar), and a temperature controller cut-off (185.0°C) protects the vessel against overpressure and overtemperature throughout all test conditions. The vessel is enclosed in an insulating jacket and fitted with a water feed port…
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Technical Specifications
Marcet Boiler ThermoFlux - 7047, Technical Specifications
| Parameter | Details |
|---|---|
| Model | ThermoFlux - 7047 |
| Unit Type | Benchtop standalone unit |
| Experiment | Saturated steam pressure–temperature relationship |
| Maximum Operating Pressure | 9 bar |
| Design Pressure | 20 bar |
| Saturation Curve Range | Up to 10 bar (145 lb/in²) |
| Pressure Vessel Capacity | 5 litres |
| Pressure Vessel Material | Stainless Steel 304 |
| Insulation | Insulating jacket on pressure vessel |
| Water Feed | Water feed port for vessel charging |
Technical Data
a) Pressure Vessel
| Parameter | Value |
|---|---|
| Capacity | 5 litres |
| Material | Stainless Steel 304 |
| Design Pressure | 20 bar |
| Operating Pressure | 9 bar |
b) Pressure Gauge
| Parameter | Value |
|---|---|
| Type | Bourdon Tube |
| Range | −1 to 15 bar |
c) Electrical Heater
| Parameter | Value |
|---|---|
| Power | 1000 W to 3000 W (3 heaters of 1000 W each, selectable in 3 stages) |
| Type | Immersion type |
| High Temperature Cut-Off | Via temperature controller |
| High Pressure Cut-Off | Via digital pressure switch |
| High Pressure Relief | Via pressure safety valve |
d) Temperature Sensor
| Type | Range |
|---|---|
| Thermocouple, K Type | −100°C to 400°C |
| Analogue sensor | 0°C to 350°C |
e) Safety Features
| Safety Device | Setting |
|---|---|
| Pressure Switch 1 | Set at 10 bar |
| Pressure Switch 2 | Set at 11 bar |
| Pressure Relief Valve | Set at 13 bar |
| Temperature Controller (cut-off) | Set at 185.0°C |
Key Features
Key Features
- Unit type: Benchtop standalone thermodynamics demonstration unit with insulating jacket on pressure vessel
- Experiment: Determination of the saturated steam pressure–temperature relationship and vapour pressure curve of water in a closed system
- Pressure vessel: 5-litre capacity; Stainless Steel 304; design pressure 20 bar; operating pressure 9 bar
- Electrical heater: Immersion type; 1000 W to 3000 W total; three heaters of 1000 W each; independently selectable in 3 stages via heater selector
- Pressure gauge: Bourdon tube type; range −1 to 15 bar
- Pressure measurement: Two digital pressure switches for monitoring and cut-off; digital display on control panel
- Temperature measurement: K-type thermocouple, −100°C to 400°C; analogue sensor, 0°C to 350°C; digital temperature display
- Vapour pressure curve: Saturation pressure curve determinable within 10 bar (145 lb/in²)
- Safety, pressure switch 1: Digital pressure switch set at 10 bar for high-pressure cut-off
- Safety, pressure switch 2: Digital pressure switch set at 11 bar for secondary high-pressure cut-off
- Safety, pressure relief valve: Mechanical pressure relief valve set at 13 bar for steam discharge under overpressure
- Safety, temperature controller: High-temperature cut-off via temperature controller set at 185.0°C, a critical Marcet boiler safety feature
- Water feed: Water feed port installed for controlled vessel charging
- Software: Optional ThermoFlux - 7047SW DAQ software developed in National Instruments™ LabVIEW™; compatible with all Windows™ environments
Experiments
- Demonstration of the relationship between the pressure and temperature of saturated steam in equilibrium with water in a closed system
- Measuring a vapour pressure curve for saturated vapour
- Recording the vapour pressure curve of water
- Demonstration of the vapour pressure curve
Construction and Design
The Marcet Boiler ThermoFlux - 7047 is built around a 5-litre stainless steel 304 pressure vessel rated to a design pressure of 20 bar and an operating pressure of 9 bar, enclosed within an insulating jacket to maintain stable thermal boundary conditions during Marcet boiler experiments. Three 1000 W immersion-type electrical heaters are installed within the vessel, selectable individually or in combination via a heater selector switch to provide 1000 W, 2000 W, or 3000 W of heating power. A Bourdon tube pressure gauge (−1 to 15 bar) provides direct analogue pressure indication, supported by two digital pressure switches set at 10 and 11 bar for automated high-pressure cut-off. A mechanical pressure safety relief valve set at 13 bar provides the final overpressure protection layer for steam discharge. Temperature is monitored via a K-type thermocouple (−100°C to 400°C) and an analogue temperature sensor (0°C to 350°C), with a temperature controller set at 185.0°C providing high-temperature cut-off protection. A digital indicator displays both temperature and pressure readings on the control panel. A water feed port is installed on the vessel to allow controlled water charging prior to experimental runs. The complete safety architecture, dual pressure switches, mechanical relief valve, and temperature controller, ensures the system remains protected against overpressure and overtemperature across all operating conditions.
Software
ThermoFlux - 7047 (Optional)
- DAQ software specifically developed for the ThermoFlux - 7047 apparatus
- Developed in the National Instruments™ LabVIEW™ environment
- Measures and calculates results directly from apparatus sensors
- Compatible with all Windows™ operating environments
- When software option is selected, a set of electronic sensors is included
Scope of Delivery
- 1× Experimental unit
- 1× Instruction manual
Standards & Compliance
- Manufactured under ISO 9001:2015 Quality Management System
- CE Marking - European Conformity where applicable
- Supplied with calibration certificate, operation manual, and experiment guide
- 12-month manufacturer's warranty (parts & labour from installation)
Ordering & Delivery
- Incoterms: CIF to destination seaport, FOB Mundra/Nhava Sheva, or Ex-Works Ambala
- Lead time: 3–5 weeks production + sea transit to destination
- Payment: LC (Letter of Credit) or T/T bank transfer against proforma invoice
- Documentation: commercial invoice, packing list, bill of lading, certificate of origin, insurance certificate
Frequently Asked Questions
Q1: What is the primary experiment performed on the ThermoFlux - 7047?
The ThermoFlux - 7047 is used to demonstrate and record the relationship between the pressure and temperature of saturated steam in equilibrium with water in a closed system. Students can determine the saturation pressure curve of water at pressures within 10 bar (145 lb/in²).
Q2: What safety devices are fitted to the ThermoFlux - 7047?
The unit incorporates three independent safety devices: two digital pressure switches set at 10 bar and 11 bar respectively for high-pressure cut-off, a mechanical pressure relief valve set at 13 bar for emergency steam discharge, and a temperature controller set at 185.0°C for high-temperature cut-off.
Q3: What is the heating capacity of the ThermoFlux - 7047, and can it be adjusted?
The unit is fitted with three immersion-type heaters of 1000 W each, providing a total capacity of 3000 W. Heater power is selectable in three stages, 1000 W, 2000 W, or 3000 W, via a heater selector switch on the control panel.
Q4: What pressure and temperature measurement instruments are provided?
Pressure is measured using a Bourdon tube gauge (−1 to 15 bar) and two digital pressure switches. Temperature is measured using a K-type thermocouple (−100°C to 400°C) and an analogue sensor (0°C to 350°C), with a digital temperature display on the control panel.
Q5: Is the DAQ software included as standard with the ThermoFlux - 7047?
No. The ThermoFlux - 7047 DAQ software is an optional accessory developed in the National Instruments™ LabVIEW™ environment. It is compatible with all Windows™ operating systems, and a set of electronic sensors is included when the software option is selected.