Course design - Heating and ventilation of a residential building

Contents

1. Design Input

2. Thermal engineering calculation of external enclosing structures of the building

3. Calculation of heating plant and building capacity

4. Choice and design of heating system

5. Hydraulic calculation of water heating system

6. Heat engineering calculation of pipes and heating devices

7. Calculation of the main equipment of the individual local

8. heat point

9. Selection and design solutions in the natural ventilation system

10. Aerodynamic calculation of natural ventilation system

11. Literature used

Choice and design of heating system

The building has designed a heating system with lower wiring (laying of supply lines along the basement), single-tube (water is supplied, and the device is removed from it by one riser, the devices are connected in series along the coolant), vertical. The heating system is centralized. Water is used as coolant, with the following parameters:

- for heating system:

falling line - t = 95 С, reverse line - t = 70 С;

- for heat networks:

falling line - t = 150 С, reverse line - t = 70 С.

Instrument connection diagram - straight-flow - adjustable with offset closing section. The direction of water movement in supply and return lines is the same, i.e. the water movement in one direction.

As heating devices, radiators pig-iron section, the M140AO brand are used (the sizes of 582х96х140 mm, height, width, depth respectively).

Air is removed from the system through the Mayevsky crane, which is installed on each heating device of the upper floor.

Selection and design solutions in the natural ventilation system

The building uses a naturally induced ventilation system - this is the opening of window frames and the use of channels (air movement occurs due to pressure difference). Ventilation system refers to exhaust, by means of which contaminated air is removed from the room. As intended, it refers to general exchange (i.e. harmful substances are supplied by plenum air to the exhaust holes).

Since the number of floors in the building does not exceed 5, they are used by individual channels made of bricks. Air is removed through ventilation channels installed in the kitchen, bath, toilet. Ventilation ducts are isolated within unheated rooms. Exhaust ventilation channels are combined in the attic with a prefabricated duct, from which air is discharged to the atmosphere through the shaft. The mine is made insulated. For fire safety, the mine is wrapped with roofing steel on felt from the inside and outside. Above the shaft an umbrella is installed to prevent ingress of sediment.