One-storey three-room residential building - ventilation and heating

Contents

Characteristics of the object 3-

Heating calculation

Determination of heat losses through enclosing structures.. 4-

Determination of heat loss for heating

infiltrating air

Calculation of heat losses between the premises and the building

To Define Surface Area and Number of Features

heating instruments.13 -

Hydraulic calculation of heat conductions.14-

Ventilation calculation

Calculation of air exchange.. 16 -

Selection and calculation of ventilation system type

Duct Calculation

Introduction:

Heating and ventilation systems are arranged to provide the premises with hygienic air conditions necessary for a person to stay in it.

Heat supply systems should be designed taking into account the structure of the fuel and energy balance of the region and the development of electric and gas supply systems. Ensuring a long service life and the most effective useful operation of heating equipment must be taken into account, as a result of competent engineering calculations. Particular attention should be paid to solutions aimed at protecting the environment, saving capital investment, fuel and energy, material resources and labor costs.

Ventilation (aeration) is designed to constantly replace the air inside the building, in order to replace the contaminated air with various bacteria and microparticles with air less containing impurities and more saturated with the necessary oxygen. It is very important to consider ventilation as one of the most necessary issues in the design and construction of buildings.

Characteristics of the object.

The course project was developed on the basis of a typical project on the topic: "Calculation of water heating and ventilation of the Central District Hospital. Place of construction of Samara city, Samara region. "

Using the data from SNiP 23.0199 "Construction climatology," we accept the following characteristics of the construction site:

- average temperature of the coldest five days

security 0.92 t5.C. = - 29C;

- design temperature of internal tv air = 20C;

- design temperature of the coldest days tn.x.s. = - 29С.

- duration of heating period Zop = 207 days.

- room humidity mode - dry

- humidity zone - dry

- operating conditions of enclosing structures - A

- temperature with average daily air temperature

8C - pot = -4.5 С.

Engineering equipment.

Water supply from external networks.

Sewerage to external networks.

Heating-from section boiler

Hot water supply from water heating column

Volumetric planning solution.

The dimensions in the axes of the building are 14.49.6 m.

Foundations - columnar concrete.

External walls - silicate brick with insulation (polyurethane foam).

Capital partitions - concrete on volcanic slag γ = 1000 kg/m3, thickness 200 mm.

Partitions - brick, thickness 120 mm.

Floors - wooden seams on beams.

The roof is an attic with a roof of asbestos cement sheets.

Floors - by ground

External finish - plaster from c/p solution-0.15.

Internal finish - plaster from c/p solution-0.02.

01

1. Heating calculation.

Heating is called artificial heating of the building premises with compensation for heat losses to maintain the temperature in them at a given level, determined by the conditions of thermal comfort for people or the requirements of the technological process.

,

where: - total heat losses of premises, W;

,

where: Qogr. - heat loss through enclosing structures, W;

Qi - heat loss for heating of infiltrating air, W;

Qbyt - household heat loss, W;