Heating and Sanitary Plants

Thermotronics » Heating and Sanitary Plants

Heating system is the process to raise the temperature of an enclosed space for the primary purpose of ensuring the comfort of the occupants. Heating is the largest energy expense in most homes and reducing the energy use for heating provides the single most effective way to reduce home’s contribution to global environmental problems. A common form of heating in modern times is known as central or indirect heating. It consists of the conversion of energy to heat at a source outside of, apart from, or located within the site or sites to be heated; the resulting heat is conveyed to the site through a fluid medium such as air, water or steam. In houses, a small hand-fired coal boiler was formerly the common means of heating water for cooking, bathing, and washing. This was superseded by a separate gas, electric, or oil-fired water heater in which the heating burner or element is included in the same unit as the hot-water storage; when hot water is drawn off, cold water enters, affecting a thermostat that turns on the heat until the tank temperature again reaches the predetermined level. Alternatively, a device known as a heat exchanger can be connected to the house-heating boiler, extracting heat from the boiler water to heat the service water. On the other side, the sun is an extremely powerful energy source that frequently works on a storage basis, in which water coils placed beneath heat-absorbing panels collect the radiant heat of the sun and convert it to thermal energy. This water may then be stored in a tank for use in heating lines or to provide hot water for washing and bathing. The most common devices used to capture solar energy, for solar water heaters and house heating, are flat-plate collectors. The solar energy can be also converted into electrical energy by solar panels (photovoltaic cells where a small electric voltage is generated when light strikes the junction between a metal and a semiconductor or the junction between two different semiconductors). By connecting large numbers of individual cells together, however, as in solar-panel arrays, hundreds or even thousands of kilowatts of electric power can be generated in a solar electric plant or in a large household array. De Lorenzo has designed different simulators and demonstrators to cover this field. The simulators, with the help of a CAI software, are developed to simulate the heating and sanitary plants such as heating systems simulator (central, distributed and zone), sanitary water production systems simulator (instantaneous geyser, store electric water heater, solar system with boiler and central system for heating), photovoltaic cells and thermal panel simulator (single cell, two cells in series and in parallel, solar-panel array with 36 cells and thermal panel with liquid circulation) and solar thermal home plant simulator. A fault simulator, for troubleshooting, is provided in all of them. There are also available two separate trainers with real components for solar thermal energy (different from each other by a single unit: one trainer with real collector and another trainer with a simulated one) or combined into one trainer (with both types of collector); all include convector heater, temperature probes and solar irradiation sensor to calculate the energy through a control panel. Complete with software, data acquisition and processing from the solar controller. Beside the latter trainers, De Lorenzo has also available a home gas supply trainer, composed of two pipe circuits of gas installation simulator (water instead of gas) with industrial components. Complete with gas meters, leaks detection, compressor and differential pressure meter. They are recommended for professional institutes, vocational schools and technical colleges.

Products Details

HEATING SYSTEMS

The simulator allows the study, the performing of experiments and the troubleshooting for the following systems:
• Central heating system
• Heating system with distributed regulation
• Zone heating system
These systems are reproduced on the panel, through a colour representation which allows a complete analysis of the fluid circuit, of its components and of the electrical/electronic circuit for control and regulation.
TRAINING OBJECTIVES
It is possible to simulate the behaviour of components and systems, on the basis of the operating conditions which can be monitored directly on the panel or through Personal Computer by teacher and students.
The Personal Computer constantly keeps under control the simulation in progress and displays its behaviour through analog and digital signals and meters; in this way the student, through measurements and tests, can go on with the troubleshooting.
TECHNICAL DESCRIPTION
The central heating system is composed of the following main elements:
• Liquid or gas heat generator
• Forced circulation circuit, two pipes, with closed expansion tank and inverse return
• Electronic central regulation of the delivery temperature, on the basis of the external temperature, through three‐ way mixing valve
• Re‐circulation anti‐condensate pump
• Boiler regulation thermostat and block thermostat
• Block pressure switch and safety valve
• Fuel interception valve
The heating system with distributed regulation is composed of the following main elements:
• Gas heat generator
• Forced circulation circuit, single pipe, with closed expansion tank and inverse return
• Regulation distributed on each user
• Two‐way thermostatic valve
• Three‐way thermostatic valves
• ON/OFF thermostats
• Boiler regulation thermostat and block thermostat
• Block pressure switch and safety valve
• Fuel interception valve

DL TM09

SANITARY WATER PRODUCTION SYSTEMS

The simulator allows the study, the performing of experiments and the troubleshooting for the following systems:
• Instantaneous geyser;
• Store electric water heater;
• Solar system for sanitary water production with boiler integration;
• Central system for heating and sanitary water production
These systems are reproduced on the panel, through a colour representation which allows a complete analysis of the fluid circuit, of its components and of the electrical/electronic circuit for control and regulation.
TRAINING OBJECTIVES
It is possible to simulate the behaviour of components and systems, on the basis of the operating conditions which can be monitored directly on the panel or through Personal Computer by teacher and students.
The Personal Computer constantly keeps under control the simulation in progress and displays its behaviour through analog and digital signals and meters; in this way the student, through measurements and tests, can go on with the troubleshooting.
TECHNICAL DESCRIPTION
The solar system for sanitary water production with boiler integration is composed of the following main elements:
• Solar panel with natural circulation, with tank for sanitary water storage
• Boiler and relevant gas burner
• Safety and regulation devices for the boiler
• Boiler for sanitary water storage
• Boiler pump
• Sanitary water regulation thermostat
• Probe for boiler temperature and boiler sanitary water thermometer
• Probe for stored sanitary water temperature through solar panels
• Safety valve
• Electrovalve for control of the heating through solar panel or through solar panel with boiler integration
• Sanitary water with heating through boiler
The central system for heating and sanitary water production is composed of the following main elements
: • Gas boiler
• Safety and regulation devices for the boiler
• Flame control device
• Modulating valve for gas capacity
• Heating circulation pump
• Expansion tank
• Air exhaust valve
• Boiler for sanitary water storage
• Boiler pump
• Sanitary water regulation thermostat
• Probe for boiler temperature and boiler sanitary water thermometer
• Safety valves
• Magnesium anode

DL TM10

PHOTOVOLTAIC AND THERMAL PANELS

The simulator allows the study, the performing of experiments and the troubleshooting for the following systems:
• Photovoltaic silicon single crystal cell, squared, side 135 mm
• Two photovoltaic cells with series connection
• Two photovoltaic cells with parallel connection
• Panel composed of 36 photovoltaic cells with series connection
• Thermal panel with liquid circulation
These systems are reproduced on the panel, through a colour representation which allows a complete analysis of the fluid circuit, of its components and of the electrical/electronic circuit for control and regulation.
TRAINING OBJECTIVES
It is possible to simulate the behaviour of components and systems, on the basis of the operating conditions which can be monitored directly on the panel or through Personal Computer by teacher and students.
The Personal Computer constantly keeps under control the simulation in progress and displays its behaviour through analog and digital signals and meters; in this way the student, through measurements and tests, can go on with the troubleshooting.
TECHNICAL DESCRIPTION
The experimentation on the photovoltaic systems (described here under) is organized as follows:
• Possibility to simulate several values of the solar radiation intensity (W/m2)
• Possibility to simulate several values of the photovoltaic cells temperature
• Possibility to change the electrical load of the above‐ mentioned photovoltaic systems
• Detection of the characteristic voltage‐current (V‐I), supplied by the photovoltaic systems, as a function of solar radiation intensity and cells temperature
• Detection of the characteristic voltage‐power (V‐P), sup‐ plied by the photovoltaic systems, as a function of solar radiation intensity and cells temperature
• Evaluation of the conversion efficiency (radiating energy‐electric power) of the photovoltaic systems
The experimentation on the thermal panel with liquid circulation is organized as follows:
• Possibility to simulate several values of the solar radiation intensity (W/m2)
• Possibility to simulate several values of the temperature of the thermal‐carrier liquid at the panel’s entrance
• Possibility to change the thermal‐carrier liquid capacity through the thermal panel
• Evaluation of the thermal‐carrier liquid temperature at the panel’s exit, as a function of the solar radiation intensity and of the entrance temperature
• Evaluation of the conversion efficiency (radiating energy‐ electric power) of the thermal panel

DL TM11

HOME GAS SUPPLY

This simulator is composed of two pipe circuits of gas installation with industrial components, fitted with gas meters.
The pipe installations can be individually selected.
The panel includes: air pressure controller, connection for gas meters, gas pressure controller, converter from one circuit to the other, various safety caps.
One circuit is considered the gas supply pipe, while the other simulates the various leaks in the gas line.
With this simulator it is possible to simulate/detect leaks and to practice on gas pipes, including testing in accordance to standard rules before and after the connection of the gas.
Complete with compressor and differential pressure meter.

DL 2103DG

SOLAR THERMAL HOME PLANT SIMULATOR

Didactic system for the theoretical study of solar plants that are used to get hot water for sanitary and air conditioning purposes or other civil applications.
The simulator allows a wide range of didactic applications.
It also simulates six temperature probes available in different points of the circuit and a solar irradiation sensor that is used to calculate the absorbed energy.
TRAINING OBJECTIVES
It allows performing the following teaching activities:
• Identification and study of all the components of solar thermal circuits and of their connections.
• Interpretation of the technical parameters of all the components.
• Dimensioning criteria for of sanitary hot water installations, etc.
• Criteria for assembly and maintenance of the plants.
• Interpretation of the data provided by the control system.
TECHNICAL DESCRIPTION
The trainer simulates the following three operating sections:
PRIMARY SYSTEM
Represented on the panel by the diagram of the circulation of the liquid, coming from the collector, that heats the water contained in the storage tank.
SOLAR THERMAL COLLECTOR
Provided with two temperature probes for the hot (inlet) and cold (return) liquid.
A light sensor detects the solar radiation and allows the plant to be operational or not operational (night).
This part of the circuit is complete with an automatic lowering of the temperature where it is too high in the primary circuit.
SECONDARY CIRCUIT (use of the hot water)
As an application of the production of hot water, the circuit of the use of the hot water that has been obtained is here represented. In this part of the circuit we have: a tank sensor on the hot side, one on the cold side, one at the cold water inlet and one at the used hot water outlet.
Displays and led bars allow the visualization of the temperature values in order to control the operation of the plant.

DL TM12

Download Area

ProductsCodeCatalogueTender specsManuals SimpleVideo
HEATING SYSTEM SIMULATORDL TM09
SANITARY WATER PRODUCTION SYSTEM SIMULATORDL TM10
PHOTOVOLTAIC AND THERMAL PANELS SIMULATORDL TM11
HOME GAS SUPPLYDL 2103DG
SOLAR THERMAL HOME PLANT SIMULATORDL TM12
SOLAR THERMAL ENERGY TRAINER WITH SIMULATED PANELDL THERMO-A1
SOLAR THERMAL ENERGY TRAINER WITH REAL PANELDL THERMO-A2
SOLAR THERMAL ENERGY TRAINER WITH REAL PANEL AND SIMULATED PANELDL THERMO-A12