Test calculation of heat generator KE-MT-10-14

Contents

Introduction

1. Testing calculation of a copper of KE-MT-10-1,

1.1 Boiler description

1.1.1 Boiler Specifications

1.1.2. Boiler Structure Description

1.1.3 Description of burner device

1.1.4 Boiler Design Diagram

1.1.5. Hydraulic circuit of coolant circulation

1.2 Composition, quantity and heat content of combustion products

1.2.1 Selection of calculated excess air by boiler gas path

1.2.2. Composition and quantity of combustion products

1.2.3. Heat content of combustion products

1.3. Composition of heat balance of the boiler

1.4 Verification thermal calculation of the furnace chamber

1.4.1 Determination of the beam-receiving surface

1.4.2 Calculation of heat exchange in the furnace chamber

1.5 Calibration calculation of convective heating surfaces

2. Structural calculation of heating tail surfaces

3. Thermal Balance Check

4. Tgu thermal diagram and its calculation

4.1. Thermal Scheme Selection and Calculation

4.2. Determination of tgu capacity and number of boilers to be installed

4.3. Selection of main equipment

4.3.1 Selection of pumps

4.3.2 Selection of deaeration column and accumulator tank

5. Calculation of CWT system and equipment selection

6. Pre-selection of smoke and fan

7. Determination of areas of industrial and domestic premises

8. Boiler house main housing layout, aerodynamic calculation of gas-air duct

8.1. Development of design axonometric diagram

8.2. Aerodynamic calculation of boiler, air heater, air ducts

and gas ducts

8.2.1. Aerodynamic calculation of air heater

8.3. Aerodynamic calculation of gas-air duct

8.3.1. Defining Duct and Duct Sections

8.3.2. Determination of gas-air duct resistances

8.3.3. Calculation and selection of ash catchers

8.4. Calculation of harmful emissions into the atmosphere

8.4.1. Stack Height Determination

8.4.2. Final selection of smoke

8.4.3. Final Fan Selection

9. Preparation of fuel for combustion

10. Calculation of the cost of generated thermal energy

11. Main technical and economic indicators of the project

11. Equipment Specification

Conclusion

List of used literature

Introduction

The twenty-first century has become a century of accelerated resource consumption, so the problem of energy shortages is acute for future generations. Many countries are already using natural resource conservation policies, including Japan, Sweden, France, Denmark and other under-resourced countries.

However, there are still countries that are dismissive of saving natural resources, to the great regret that Russia also includes. Therefore, Russian designers are simply obliged to design the most cost-effective and environmentally friendly projects.

Our goal in this course project is to conduct a test calculation of the heat generating plant - the steam boiler KEMT101.4, to check the heat balance, to select the optimal equipment and to find out the profitability of the project at a given place of development.

Defining a Beam Receiving Surface

During the design and operation of boiler plants, the calibration calculation of furnace devices is carried out. The calibration thermal calculation of the furnace chamber is aimed at determining the thermal perception by the radiant heating surfaces of the boiler Ql and checking whether the temperature at the outlet of the furnace chamber corresponds to the optimal temperatures of 9501100C.

The condition of optimal temperatures at the outlet of the furnace chamber is necessary to fulfill the calculated parameters of the furnace process and heat balance of the boiler, rational use of heating surfaces. The calculation is carried out by the method of successive approximations.

During the verification calculation of the furnace according to the drawings, it is necessary to determine: the volume of the furnace chamber, the degree of its shielding, the surface area of ​ ​ the walls and the area of ​ the radiant surfaces of the heating, as well as the structural characteristics of the pipes of the screens (pipe diameter, the distance between the axes of the pipes).

The active volume of the furnace chamber consists of the volume of the upper, middle (prismatic) and lower parts of the furnace. To determine the active volume of the furnace, it should be divided into a number of elementary geometric shapes.

Upper part of furnace volume is limited by ceiling cover and outlet window covered by festone or first row of pipes of convective heating surface. When determining the volume of the upper part of the furnace, the ceiling floor and the plane passing through the axes of the first row of pipes of the feston or the convective heating surface in the outlet window of the furnace are accepted beyond its boundaries.

Lower part of layer furnaces is limited by hearth. The total surface area of the furnace walls is calculated by the dimensions of the surfaces that limit the volume of the furnace chamber. To do this, all surfaces that restrict the volume of the furnace are split into elementary geometric shapes.

Furnace chamber volume: Vt = 34.5 m3.

Heating surface of the furnace chamber: Fst = 207.3 m2.

Radiation area of the heating surface - radiative area of the heating surface of wall screens: Nl = 41m2.

Degree of furnace shielding: = Nl/Fst = 41/207.3 = 0.198.

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