Explanatory note and ventilation calculations of industrial building

Contents

Chapter 1. Source Data

1.1. External parameters:

1.2. Internal parameters:

1.2.1. Smithy

1.2.2. Soldering unit

1.3. Architectural and construction characteristics of the building

1.4. Process Description

1.4.1. Soldering unit

1.4.2. Smithy

Chapter 2. Calculation of cold revenues

2.1. Calculation of heat loss through fences

2.1.1. Smithy

2.1.2. Soldering unit

2.2. Infiltration Calculation

2.3. Cold receipts from imported cold material

2.4. Cold inflows from incoming cold transport

2.4.1. Soldering unit

2.4.2. Smithy

Chapter 3. Calculation of Heat Inputs

3.1. Heat emissions from people

3.1.1. Soldering unit

3.2. Heat emissions from lighting

3.3. Heat emissions from equipment

3.3.1. Heat generation from heating electric furnace

3.3.2. Heat emissions from the mountain

3.3.3. Heat emissions from presses

3.4. Heat emissions from heated metal in the hot shop

3.4.1. Winter and transition

3.4.2. Summer period

3.5. Heat emissions from solar radiation

3.5.1. Heat input through glazing

3.5.2. Heat emissions from solar radiation through the coating

3.6. Heat input from heating system

3.6.1. Soldering unit

3.6.2. Smithy

3.7. Heat transfer from heated surfaces (Separation of forging presses)

3.7.1. Umbrella-visor at heating electric furnace

Heat Balance by Room

Chapter 4. Design of local exhaust ventilation

4.1. Forge department

4.1.2 Heating Electric Furnace

4.1.3. Local suction from a 2-fire mountain

4.2. Soldering unit

4.2.1. Soldering posts

Local Suction Summary Table

Chapter 5. Design of local plenum ventilation

5.1. Calculation of air showers

5.2. Calculation of shutter type air curtains

5.3. Forge department

5.4. Soldering unit

Chapter 6. Determination of the value of the common exhaust

6.1. Forge department

6.2. Soldering unit

Chapter 7. Preparation of air-heat balances of workshops

7.1. Forge department

7.2. Soldering unit

Summary table of air balances

Chapter 8. Design solutions for general exhaust ventilation

8.1. Aeration

Chapter 9.Constructive ventilation solutions

Chapter 10. Calculation of air terminals

10.1. Soldering unit

Chapter 11. Equipment selection and system calculation

11.1. Air strangling system - P

11.1.1. Select STD grilles

11.1.2. Selection of HPC flap

11.1.3. Air conditioner selection

11.2. Air curtain - P

11.2.1. Hot Shop

11.2.2 Cold Shop

11.3. Cold Shop Common Supply Ventilation System - P

11.3.1. Selection of STD grille

11.3.2. Selection of HPC flap

11.3.3. Calorifer selection in winter

11.3.4. Selection of bypass valve

11.3.5. Selection of fan

11.3.6. Axonometric diagram of P-

11.4. Local exhaust ventilation system of cold shop B-

11.5. Local exhaust ventilation system of the hot shop VE1-3 (umbrellas of the visor)

1.4. Process Description

1.4.1. Soldering unit

This industrial building is divided into two departments: the forge department and the ration department.

The soldering compartment is a room with slight excess heat (≤ 23 W/m3 or 20 kcal/( h· m3)) - a cold workshop. The works performed in this office belong to the category of average weight of IIb (energy consumption 232÷293 of W or 200÷250 of kcal/h). In the soldering compartment, the metal preforms are joined together without melting them by introducing molten intermediate metal-solder therebetween. The solder has a melting point lower than the temperature of the bonding metals and fills the gap between the bonding surfaces by capillary forces. Upon cooling, the solder crystallizes and forms a strong bond between the preforms. In the process of soldering, along with heating, it is necessary to remove oxide films from the surface of the soldered metals. The main equipment is soldering tables. Soldering machine .

The site works in three shifts. The number of working people is 16 people.

1.4.2. Smithy

The blacksmith shop is a room with significant excess heat (> 23 W/m3 or 20 kcal/( h· m3)) - a hot shop. The works performed in this office belong to the category of average weight of IIb (energy consumption 232÷293 of W or 200÷250 of kcal/h). Production processes in the blacksmith shop include heating, forging and stamping of metal blanks. Preforms and ingots are heated before forging and forging to forging temperatures in heating flame electric furnaces (slot, chamber) and electric heating units. Forge flame furnaces operate on solid, liquid and gaseous fuel. Pneumatic and steam-air hammers, horizontal forging machines are used for free forging and hot forging.

The main production harmful emissions in the blacksmith shop are convective and radiant heat, carbon monoxide, sulfur dioxide.

Meteorological conditions in the blacksmiths should be accepted as for rooms with significant excess heat and a category of heavy work.

At workplaces and areas subject to heat exposure, air strangulation is provided.

Local exhaust ventilation is arranged above the loading holes of furnaces - umbrellas. To compensate for the air removed by local suction, mechanical plenum general-exchange ventilation is provided with air distribution to the working zone. During all periods of the year, aeration is organized. As summer, all supply air can be supplied to the workshop through window framugs.

The workshop works in three shifts with a number of people - 14.

Through a gate measuring 3.0x3.0 m, cargo weighing 10 tons per shift is imported and exported on a trolley with a carrying capacity of 2 tons.

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