Saratov courthouse - Heating system

Contents

Introduction

1. Design parameters of outdoor air

1.1. Climatological data

1.2. Monthly average ambient temperature schedule

2. Design parameters of internal air

3. Heat engineering calculation of external enclosing structures

3.1. Basic Design Dependencies

3.2 Calculation of thermal resistance of enclosures

designs

3.3 Calculation of thickness of the main heat insulation layer

3.4 Determination of actual thermal resistance and heat transfer coefficient of enclosing structures

4. Calculation of heat losses of the building

4.1 Design capacity of heating system

4.2 Heat loss through enclosing structures

4.3. Heat loss for infiltrating air heating

4.4. Heat inputs from domestic sources

5 Development of the building water heating system

6. Calculation of heating devices

6.1. Basic Design Dependencies

6.2 Calculation of cast iron section radiators

7. Hydraulic calculation of the building heating system

8. Calculation of expansion tank

9. Annual heating heat consumption

Literature

Introduction

The state of the air environment in the rooms is determined by the combination of thermal humidity and air modes of the room.

The thermal mode of the building is influenced by parameters and processes that determine the thermal situation in the rooms. The thermal situation of the room depends on a number of factors: temperature, mobility and humidity of the air, the presence of jet currents, differences in air parameters in the plan and height of the room, radiant heat flows depending on the temperature, size, radiation properties of the surface and their location.

The air mode of the building is the process of air exchange between rooms and external air, including the movement of air inside the rooms, the movement of air through fences, openings, air ducts and the flow of air around the building.

Heating, ventilation and air conditioning systems are used to ensure the required internal conditions in the room.

Heating systems create and maintain the necessary indoor air temperatures during the cold season.

Ventilation systems are used to supply clean air to the rooms and remove contaminated air from them. At the same time, the temperature of the internal air should not change.

Air conditioning systems are designed to create and automatically maintain in the premises temperature, relative humidity, air mobility, as well as its purity and certain gas composition, regardless of external meteorological conditions.

In this course work, a local heating system for a two-story public building is designed.

Development of the building water heating system

In this public building, we calculate the local heating system - this is such a heating system in which all three main elements (thermal point, thermal pipelines, heating devices) are combined in one device. At the same time, heating devices are located under each window. The heat station is located in a separate room.

According to the scheme of inclusion of heating devices to the riser, we attribute this heating system to double-tube, with the lower location of the supply main. Coolant circulation is artificial due to electric pump. Parameters of heat carrier 95-70 wasps. Open pipe laying. Horizontal sections of pipes are laid with a slope of at least 0.002: a return pipeline with a slope towards the heat unit - for lowering water from the system; supply pipeline with slope from heat unit - for air removal from the system .

Calculation of cast iron section radiators

For calculation we accept cast-iron sectional radiators of grade MS140180 as per GOST 86.9075 *.

When calculating the necessary heat transfer of instruments in the considered room with losses of pipelines Qtr. neglect.

When distributing the heat load on the instruments, the heat loss from the furnace house is not taken into account, since in this room there are excess heat emissions from the heat preparation equipment: boiler, pipelines, valves.

ЛИСТ 2.dwg

ЛИСТ 1.dwg

ЭУ.dwg