Understanding Heating Hot Water Distribution Systems

Classification of Heating Hot Water Distribution System Function Adopted

Bitubular Distribution

It is characterized by the existence of two tubes, one for supply and a return, mounted in parallel. This ensures a uniform water temperature. The power of the radiators can be achieved by uprights or anillos.

Monotubular Distribution

The entire set of pipes and radiators is bound by a single distribution pipe for hot water to form a closed circuit. The water passes through all the radiators, decreasing in temperature as it moves towards the final radiator anillo.

Radiant Heating Systems

Radiant heating systems operate at temperatures between 25 to 35 ºC, radiating heat from the bottom up evenly.

Function of the Expansion Tank

What is the function of the expansion tank? Types

The function of the expansion tank is to absorb the differences in volume expansion produced by heating the water inside the heating system.

• Open: Located one meter above the highest radiator.
• Closed: Located in the boiler.

Justification for the Use of Expansion Tanks

The expansion tank retains the excess volume that results when water is heated above its normal temperature, undergoing significant expansion. It takes into account the increase in the volume of water as it passes from 4 ºC to 90 ºC. The expansion tank must have a minimum capacity of 3.5% of the total volume of water contained in the facility.

Components for Automatic Adjustment of a Heating System

List the components of the system for automatic adjustment of a heating system.

• 3-way mixing valve
• Temperature sensors (one way, outside, environment)
• Anti-condensation pump
• Control unit
• Safety valve
• Thermostat

Security Features of the Boiler

Security features of the boiler.

• Thermometer
• Thermostat
• Pressure switch
• Pressure gauge
• Safety valve

Usefulness of the Safety Thermostat

Indicate the usefulness of the safety thermostat.

The safety thermostat adjusts the amount of heat supplied to the building based on heat demand at all times. It acts on the temperature difference produced in the hot water temperature.

Utility of Thermal Insulation Materials

Concrete utility of thermal insulation materials in the construction of the exterior walls of a building. With what other purpose do you use?

The materials have low thermal conductivity and are called insulation. Depending on the quality of materials, they can change the outcome of heat transmission losses. They are also used to save energy.

Factors Affecting Heat Requirements

What factors affect the heat required to offset the requirements for renewal of a local air you want to provide heat?

Amount of heat (Q) = air mass (m) × air specific heat (Ce) × (T_{Shakespeare Boutique} - T_outside)