V. V. Pokotilov
V. V. Pokotilov
for the calculation of heating systems
V. V. Pokotilov
FOR CALCULATION OF HEATING SYSTEMS
Candidate of Technical Sciences, Associate Professor V. V. Pokotilov
A guide to calculating heating systems
A guide to calculating heating systems
V. V. Pokotilov
Vienna: HERZ Armaturen, 2006.
© HERZ Armaturen, Vienna, 2006
Preface |
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2.1. Selection and placement of heating devices and heating system elements |
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in the premises of the building |
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2.2. Devices for regulating the heat transfer of a heating device. |
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Connection methods various types heating devices for |
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heating system pipelines |
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2.3. Selecting a scheme for connecting a water heating system to heating networks |
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2.4. Design and some provisions for the execution of drawings |
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heating systems |
3. Determination of the calculated heat load and coolant flow for the design section of the heating system. Determination of design power
water heating systems |
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4. Hydraulic calculation of a water heating system |
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4.1. Initial data |
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4.2. Basic principles of hydraulic calculation of a heating system |
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4.3. The sequence of hydraulic calculation of the heating system and |
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selection of control and balance valves |
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4.4. Features of hydraulic calculation of horizontal heating systems |
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when laying hidden pipelines |
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5. Design and selection of equipment for the heating point of the system |
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water heating |
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5.1. Selection of a circulation pump for a water heating system |
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5.2. Selection of type and selection of expansion tank |
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6. Examples of hydraulic calculations of two-pipe heating systems |
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6.1. Examples of hydraulic calculations of a vertical two-pipe system |
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heating with overhead distribution of main heat pipelines |
6.1.1.
6.1.3. Example of hydraulic calculation of a vertical two-pipe system
heating with overhead wiring using radiator valves
6.2. Example of hydraulic calculation of a vertical two-pipe system
heating with bottom wiring using HERZ-TS-90 valves and
HERZ-RL-5 for radiators and differential pressure regulators HERZ 4007
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V.V. Pokotilov: A manual for calculating heating systems
6.3.
6.5. Example of hydraulic calculation of a horizontal two-pipe system
heating using a single-point radiator valve
7.2. Example of hydraulic calculation of horizontal single pipe system
heating using HERZ-2000 radiator units and regulators
7.5. Examples of valve applications HERZ-TS-90-E HERZ-TS-E during construction
heating systems and during the reconstruction of existing
8. Application examples three way valves HERZ art.No7762
With HERZ thermomotors and servo drives in system design
heating and cooling |
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9. Design and calculation of systems underfloor heating |
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9.1. Design of underfloor heating systems |
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9.2. Basic principles and sequence of thermal and hydraulic |
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calculation of underfloor heating systems |
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9.3. Examples of thermal and hydraulic calculations of underfloor heating systems |
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10. Thermal calculation of water heating systems |
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Literature |
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Applications |
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Appendix A: Nomogram for hydraulic calculation of water pipelines |
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heating from steel pipes at k W = 0.2 mm |
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Appendix B: Nomogram for hydraulic calculation of water pipelines |
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heating from metal-polymer pipes at k W = 0.007 mm |
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Appendix B: Local resistance coefficients |
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Appendix D: Pressure loss at local resistance Z, Pa, |
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depending on the sum of local resistance coefficients ∑ζ |
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Appendix E: Nomograms D1, D2, D3, D4 for determining specific |
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heat transfer q, W/m2 of the underfloor heating system depending |
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from the average temperature difference ∆t avg |
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Appendix E: Thermal characteristics panel radiator VONOVA |
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V.V. Pokotilov: A manual for calculating heating systems
Preface
While creating modern buildings Heating systems developed for various purposes must have appropriate qualities designed to provide thermal comfort or the required thermal conditions in the premises of these buildings. A modern heating system must match the interior of the premises, be easy to use and
stand for users. A modern heating system allows automatic
redistribute heat flows between rooms of the building, to the maximum extent possible
use any regular and irregular internal and external heat inputs brought into the heated room, must be programmable for any thermal operating conditions
operation of premises and buildings.
To create such modern systems heating requires a significant technical variety of shut-off and control valves, a certain set of control instruments and devices, a compact and reliable structure of the pipeline set. The degree of reliability of each element and device of the heating system must correspond to modern high requirements and be identical between all elements of the system.
This manual on the calculation of water heating systems is based on the comprehensive use of equipment from HERZ Armaturen GmbH for buildings for various purposes. This manual has been developed in accordance with current standards and contains basic reference
And technical materials in the text and in appendices. When designing, you should additionally use the company’s catalogs, construction and sanitary standards, special
ancient literature. The book is aimed at specialists with education and design practice in the field of heating buildings.
In ten sections this manual given guidelines and examples of hydraulic
technical and thermal calculation of vertical and horizontal water heating systems with
measures for selecting equipment for heating points.
The first section systematizes the fittings of the company HERZ Armaturen GmbH, which is divided into 4 groups. In accordance with the presented systematization, we have developed
methods of design and hydraulic calculation of heating systems, which are set out in
sections 2, 3 and 4 of this manual. In particular, the principles for selecting reinforcement of the second and third groups are presented methodically different, and the main provisions for the selection are defined
differential pressure regulators. In order to systematize the hydraulic calculation methodology
various heating systems, the manual introduces the concept of “regulated section” of the circulation
ring, as well as “the first and second directions of hydraulic calculation”
By analogy with the type of nomogram for hydraulic calculations for metal-polymer pipes, the manual contains a nomogram for hydraulic calculations of steel pipes, which are widely used for open laying of main heating pipelines and for piping equipment at heating points. In order to increase the information content and reduce the volume of the manual, the nomograms for hydraulic selection of valves (normals) are supplemented with information general view valve and technical characteristics valves, which are located on the free part of the nominal field
The fifth section provides a methodology for selecting the main type of equipment for thermal
nodes, which is used in subsequent sections and in examples of hydraulic and thermal
heating system calculations
The sixth, seventh and eighth sections give examples of calculating various two-pipe and single-pipe heating systems in conjunction with various options heat sources
– furnace or heating networks. The examples also give practical recommendations on the selection of differential pressure regulators, on the selection of three-way mixing valves, on the selection of expansion tanks, on the design of hydraulic separators, etc.
underfloor heating
The tenth section provides a method for thermal calculation of water heating systems and
measures for selecting various heating devices for vertical and horizontal two-pipe and single-pipe heating systems.
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V.V. Pokotilov: A manual for calculating heating systems
1. General technical information about HERZ Armaturen GmbH products
HERZ Armaturen GmbH produces a full range of equipment for water systems
heating and cooling systems: control valves and shut-off valves, electronic regulators and direct-acting regulators, pipelines and connection fittings, hot water boilers and other equipment.
HERZ produces control valves for radiators and heating substations with
variety of standard sizes and actuators for them. For example, for a radiator
of valves are produced the most wide range interchangeable executive me-
mechanisms and thermostats - from thermostatic ones of various designs and purposes
direct acting heads to electronic programmable PID controllers.
The hydraulic calculation method outlined in the manual is modified depending on
the type of valves used, their structural and hydraulic characteristics. We have divided HERZ fittings into the following groups:
Shut-off valves.
Group universal fittings, which does not have a hydraulic adjustment.
A group of fittings that has in its design devices for adjusting the hydraulic
resistance to the required value.
To the first group of fittings operated in the full open or full positions
closures include
- shut-off valves STREMAX-D, STREMAX-A, STREMAX-AD, STREMAX-G,
SHTREMAKS-AG,
HERZ gate valves,
- Radiator shut-off valves HERZ-RL-1-E, HERZ-RL-1,
- ball, plug valves and other similar fittings.
To the second group fittings that do not have hydraulic settings include:
- thermostatic valves HERZ-TS-90, HERZ-TS-90-E, HERZ-TS-E,
HERZ-VUA-T, HERZ-4WA-T35,
- connection nodes HERZ-3000,
- connection nodes HERZ-2000 for single-pipe systems,
- single-point connection nodes to the radiator HERZ-VTA-40, HERZ-VTA-40-Uni,
HERZ-VUA-40,
- three way thermostatic valves CALIS-TS
- three-way control valves HERZ art.No 4037,
- distributors for connecting radiators
- other similar fittings in the constantly updated product range of HERZ Armaturen GmbH.
The third group of fittings, which has a hydraulic setting for installation of the required
O hydraulic resistance can be attributed
- thermostatic valves HERZ-TS-90-V, HERZ-TS-98-V, HERZ-TS-FV,
- balance valves for radiators HERZ-RL-5,
- manual radiator valves HERZ-AS-T-90, HERZ-AS, HERZ-GP,
- connection nodes HERZ-2000 for two-pipe systems,
- balance valves STREMAX-GM, STREMAX-M, STREMAX-GMF,
STREMAX-MFS, STREMAX-GR, STREMAX-R,
- automatic differential pressure controller HERZ art.No 4007,
HERZ art.No 48-5210…48-5214,
- automatic flow regulator HERZ art.No 4001,
- bypass valve for maintaining differential pressure HERZ art.No 4004,
- distributors for underfloor heating
- other fittings in a constantly updated range of products
HERZ Armaturen GmbH.
A special group of valves includes valves of the HERZ-TS-90-KV series, which in their
designs belong to the second group, but are selected according to the method of calculating valves
this group.
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V.V. Pokotilov: A manual for calculating heating systems
2. Selection and design of the heating system
Heating systems, as well as the type of heating devices, type and parameters of the coolant used
are taken in accordance with building codes and design assignment
When designing heating, it is necessary to provide for automatic control and meters for the amount of heat consumed, as well as to use energy-efficient solutions and equipment.
2.1. Selection and placement of heating devices and system elements
heating in building premises
Heating design is pre-
provides a comprehensive solution to the following
1) individual choice of the optimal
options for heating type and heater type
new device that provides comfortable
conditions for each room or zone
premises
2) determining the location of the heating
physical devices and their required sizes to ensure comfort conditions;
3) individual choice for each heating device of the type of regulation
And sensor locations depending
on the purpose of the room and its thermal
inertia, from the magnitude of possible
external and internal thermal disturbances
tion, depending on the type of heating device and its
thermal inertia, etc., for example,
two-position, proportional, pro-
configurable regulation, etc.
4) selection of the type of connection of the heating device to the heat pipes of the heating system
5) deciding on the layout of pipelines, choosing the type of pipes depending on the required cost, aesthetic and consumer qualities;
6) selection of system connection diagram
heating to heating networks. When designing
In this case, the appropriate heat-
high and hydraulic calculations, allowing
to select materials and equipment
heating and substation systems
Optimal comfortable conditions reached
are screwed the right choice type of heating and type of heating device. Heating appliances should be placed, as a rule, under light openings, ensuring
access for inspection, repair and cleaning (Fig.
2.1a). As heating devices
convectors. Place heating units
us premises (if there is a room
two or more external walls) for the purpose of eliminating
dation of the cold flow descending to the floor
air. Due to the same circumstances, the length
heating device should be
at least 0.9-0.7 width of window openings
heated premises (Fig. 2.1a). Floor-
The height of the heating device must be less than the distance from the finished floor to
the bottom of the window sill (or the bottom of the window opening if it is absent) by an amount not
less than 110 mm.
For rooms whose floors are made of materials with high thermal activity
ness ( ceramic tile, natural
stone, etc.) is appropriate against the background of the
vective heating using heater-
devices to create a sanitary effect with
using underfloor heating
In premises for various purposes
height more than 5 m in the presence of vertical
new light openings should be under them
place heating appliances to protect workers from cold downdrafts
current air flows. At the same time this
the solution is created directly at the floor
increased speed of cold flooring
air flow along the floor, speed
which often exceeds 0.2...0.4 m/s
(Fig. 2.1b). As the power of the device increases, the discomfort increases.
In addition, due to the increase in air temperature in the upper zone, the
heat loss from the room melts
In such cases, to ensure thermal comfort in work area and reduction
floor heating or radiant heating
using radiation heating
devices located in the upper zone at a height of 2.5...3.5 m (Fig. 2.1b). Additional
follow carefully under light openings
place heating appliances with heat
heavy load to compensate for the heat loss of a given light opening. If available in
such premises of permanent workplaces
in workplace areas to ensure thermal comfort in them using either
systems air heating, either using local radiation devices above workplaces, or using
this under the light openings (windows) for
calculated thermal load device following
protection of workers from cold downdrafts
blowing is taken equal to the calculated thermal
air flows should be placed away from
losses of this upper light opening
heating appliances with a heat load of
with a margin of 10-20%. Otherwise on
compensation of heat losses of a given light
condensation will occur on the glazing surface
saturation.
Rice. 2.1.: Examples of placement of heating devices in rooms
a) in residential and administrative premises up to 4 m high;
b) in premises for various purposes with a height of more than 5 m;
c) in rooms with overhead light openings.
In one heating system it is allowed
use of heating appliances
personal types
Built-in heating elements It is not allowed to be placed in single-layer
external or internal walls, as well as in
partitions, with the exception of the heater
nal elements built into the internal
walls and partitions of wards, operating rooms
and other medical premises of hospitals.
It is allowed to be provided in multi-layer external walls, ceilings and
floor heating elements water
heating systems embedded in concrete.
IN staircases buildings up to 12 floors
same heating appliances are allowed
place only on the ground floor at the level
entrance doors; installation of heating
devices and the laying of heat pipes in the volume of the vestibule is not allowed.
In the buildings of medical institutions, heating devices on staircases
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V.V. Pokotilov: A manual for calculating heating systems
Heating appliances should not be placed in vestibule compartments that have
external doors
Heating devices on the staircase
the cage should be attached to separate
branches or risers of heating systems
Heating system piping should be
design from steel (except galvanized
bathrooms), copper, brass pipes, as well as
heat-resistant metal-polymer and poly-
measuring pipes.
Pipes from polymer materials pro-
placed hidden: in the floor structure,
behind screens, in fines, mines and canals. Open laying of these pipelines
allowed only within the fire sections of the building in places where their mechanical damage, external on-
heating outer surface pipes over 90 °C
and direct exposure to ultraviolet radiation
rays. Complete with polymer pipes
compounds should be used
body parts and products corresponding
the type of pipe used.
Pipeline slopes should be taken
mother is not less than 0.002. Gasket allowed
pipes without a slope at a speed of water movement in them of 0.25 m/s or more.
Shut-off valves should be provided
flush: to turn off and drain water from
individual rings, branches and risers of systems
heating, for automatic or remote
tionally controlled valves; to turn off
removal of part or all heating devices in
rooms in which heating is used
occurs periodically or partially. Shut-off
the fittings should be provided with pieces
cerami for connecting hoses
IN pumping systems water heating
should, as a rule, provide for
precision air collectors, taps or automatic
tic air vents. Non-flowing
air collectors may be provided at a speed of water movement in the pipe-
wire less than 0.1 m/s. Using
antifreeze liquid is desirable
use for automatic air removal
tic air vents - separators,
installed, usually in a thermal
point "to the pump"
In heating systems with bottom routing of lines for air removal, pre-
installation of air outlets is envisaged
cranes on heating devices upper
floors (in horizontal systems- for each
house heating device).
When designing centralized systems
for water heating made from polymer pipes, automatic
tic control (temperature limiter)
temperature) to protect pipelines
from exceeding coolant parameters
Built-in installation cabinets are installed on each floor, in which there should be
distributors with outlets can be placed
pipelines, shut-off valves, filters, balance valves, as well as meters
heat metering
Pipes between distributors and heating devices are laid
at external walls in special protective
corrugated pipe or in thermal insulation, in
floor structures or in special plinths
sah-korobakh
2.2. Devices for regulating the heat transfer of a heating device. Methods for connecting various types of heating devices to heating system pipelines
To regulate air temperature
in rooms near heating appliances there is
blows to install control valves
In premises with permanent occupancy
nium people are usually established
automatic thermostats, providing
maintaining a given temperature
ry in each room and supply savings
heat through the use of internal
excess heat (domestic heat emissions,
solar radiation).
At least 50% of heating applications
burs installed in one room -
research, it is necessary to establish a regulatory
fittings, with the exception of indoor devices
areas where there is a risk of freezing
coolant
In Fig. 2.2 shows various options
you temperature controllers that can
be set to thermostatic temperature
diator valve.
In Fig. 2.3 and fig. 2.4 shows options
the most common connections of various types of heating devices to two-pipe and single-pipe heating systems
Regulatory and methodological documents are provided that regulate the design of surface drainage and treatment systems (rain, melt, water-washing) Wastewater from residential areas and enterprise sites, as well as comments on the provisions of SP 32.13330.2012 “Sewerage. External networks and structures" and "Recommendations for calculating systems for collecting, draining and purifying surface runoff from residential areas and enterprise sites and determining the conditions for its release into water bodies" (JSC "NII VODGEO"). The specified documents allow for the diversion for treatment of the most contaminated part of surface runoff in an amount of at least 70% of the annual volume of runoff for residential areas and enterprise sites close to them in terms of pollution, and the entire volume of runoff from the sites of enterprises, the territory of which may be polluted with specific substances with toxic properties or significant content organic matter. Common design practices reviewed engineering structures separate and all-alloy sewerage systems that allow short-term discharge of part of the wastewater during intense (storm) rains of rare frequency through separation chambers (storm discharges) into a water body. Situations related to refusals of the territorial departments of the State Expertise and Rosrybolovstvo to approve the implementation of activities on planned capital construction projects on the basis of Article 60 of the Water Code of the Russian Federation, which prohibits the discharge into water bodies of wastewater that has not been subjected to sanitary treatment and neutralization, are considered.
Keywords
List of cited literature
- Danilov O. L., Kostyuchenko P. A. Practical guide to the selection and development of energy-saving projects. – M., JSC Tekhnopromstroy, 2006. pp. 407–420.
- Recommendations for calculating systems for the collection, disposal and purification of surface runoff from residential areas, enterprise sites and determining the conditions for its release into water bodies. Addendum to SP 32.13330.2012 “Sewerage. External networks and structures" (updated edition of SNiP 2.04.03-85). – M., JSC “NII VODGEO”, 2014. 89 p.
- Vereshchagina L. M., Menshutin Yu. A., Shvetsov V. N. On the regulatory framework for the design of systems for the disposal and treatment of surface wastewater: IX scientific and technical conference “Yakovlev Readings”. – M., MGSU, 2014. pp. 166–170.
- Molokov M.V., Shifrin V.N. Treatment of surface runoff from the territories of cities and industrial sites. – M.: Stroyizdat, 1977. 104 p.
- Alekseev M.I., Kurganov A.M. Organization of drainage of surface (rain and melt) runoff from urbanized areas. – M.: Publishing house ASV; St. Petersburg, St. Petersburg State University of Civil Engineering, 2000. 352 p.
1 area of use
2. Legislative and regulatory documents
3. Terms and definitions
4. General provisions
5. Qualitative characteristics of surface runoff from residential areas and enterprise sites
5.1. Selection of priority indicators of surface runoff pollution when designing treatment facilities
5.2. Determination of calculated concentrations of pollutants when surface runoff is diverted for treatment and released into water bodies
6. Systems and structures for draining surface runoff from residential areas and enterprise sites
6.1. Systems and schemes for the disposal of surface wastewater
6.2. Determination of estimated costs of rain, melt and drainage water in rainwater sewers
6.3. Determination of the estimated wastewater flow rates of a semi-separate sewer system
6.4. Regulation of wastewater flows in the storm drainage network
6.5. Surface runoff pumping
7. Estimated volumes of surface wastewater from residential areas and enterprise sites
7.1. Determination of average annual volumes of surface wastewater
7.2. Definition estimated volumes rainwater discharged for treatment
7.3. Determination of the estimated daily volumes of melt water discharged for treatment
8. Determination of the design capacity of surface runoff treatment facilities
8.1. Estimated performance storage type treatment facilities
8.2. Estimated productivity of flow-type treatment facilities
9. Conditions for the removal of surface runoff from residential areas and enterprise sites
9.1. General provisions
9.2. Determination of permissible discharge standards (VAT) of substances and microorganisms when releasing surface wastewater into water bodies
10. Surface runoff treatment facilities
10.1. General provisions
10.2. Selecting the type of treatment facility based on the principle of water flow regulation
10.3. Basic technological principles
10.4. Cleaning surface runoff from large mechanical impurities and debris
10.5. Separation and regulation of flow into wastewater treatment plants
10.6. Purification of wastewater from heavy mineral impurities (sand collection)
10.7. Accumulation and preliminary clarification of wastewater using static settling method
10.8. Reagent treatment of surface runoff
10.9. Surface runoff treatment using reagent sedimentation
10.10. Treatment of surface runoff using reagent flotation
10.11. Purification of surface runoff using contact filtration
10.12. Additional purification of surface runoff by filtration
10.13. Adsorption
10.14. Biological treatment
10.15. Ozonation
10.16. Ion exchange
10.17. Baromembrane processes
10.18. Disinfection of surface runoff
10.19. Waste management technological processes surface wastewater treatment
10.20. Basic requirements for control and automation of technological processes for surface wastewater treatment
Bibliography
Appendix 1. Rain intensity values
Appendix 2. Parameter values for determining the estimated flow rates in rainwater sewer collectors
Appendix 3. Zoning map of the territory Russian Federation along the layer of melt runoff
Appendix 4. Map of zoning of the territory of the Russian Federation according to coefficient C
Appendix 5. Methodology for calculating the volume of a reservoir for regulating surface runoff in a storm sewer network
Appendix 6. Methodology for calculating productivity pumping stations for pumping surface runoff
Appendix 7. Methodology for determining the maximum daily layer of rainwater runoff for residential areas and enterprises of the first group
Appendix 8. Methodology for calculating daily precipitation with a given probability of exceedance (for enterprises of the second group)
Appendix 9. Normalized deviations from the average value of the ordinates of the logarithmically normal distribution curve Ф at different meanings security and asymmetry coefficient
Appendix 10. Normalized deviations of the ordinates of the binomial distribution curve Ф for different values of security and asymmetry coefficient
Appendix 11. Average daily precipitation layers Hsr, coefficients of variation and asymmetry for various territorial regions of the Russian Federation
Appendix 12. Methodology and example for calculating the daily volume of melt water discharged for treatment
After collecting the initial data, determining the heat losses of the house and the power of the radiators, all that remains is to perform a hydraulic calculation of the heating system. Done correctly, it is a guarantee of correct, silent, stable and reliable operation heating systems. Moreover, it is a way to avoid unnecessary investment and energy costs.
Calculations and work that need to be done in advance
Hydraulic calculation is the most time-consuming and complex design stage.
- Firstly, the balance of heated rooms and premises is determined.
- Secondly, it is necessary to select the type of heat exchangers or heating devices, and also arrange them on the house plan.
- Thirdly, calculating the heating of a private house assumes that a choice has already been made regarding the configuration of the system, types of pipelines and fittings (control and shut-off).
- Fourth, a drawing must be made heating system. It's best if it's axonometric diagram. It should indicate numbers, length of calculation sections and thermal loads.
- Fifth, the main circulation ring is installed. This closed loop, including successive sections of pipeline directed to the instrument riser (when considering a single-pipe system) or to the most remote heating device (if there is a two-pipe system) and back to the heat source.
Heating calculation in wooden house performed according to the same scheme as in a brick or any other country cottage.
Calculation procedure
Hydraulic calculation of the heating system involves solving the following problems:
- determination of pipeline diameters at various sections (economically feasible and recommended coolant flow rates are taken into account);
- calculation of hydraulic pressure losses in different areas;
- hydraulic linkage of all branches of the system (hydraulic instrumentation and others). It involves the use of control valves, which allows for dynamic balancing under non-stationary hydraulic and thermal operating conditions of the heating system;
- coolant flow and pressure loss calculation.
Are there free calculation programs?
To simplify the calculation of the heating system of a private house, you can use special programs. Of course, there are not as many of them as graphic editors, but there is still a choice. Some are distributed free of charge, others in demo versions. In any case, it will be possible to make the necessary calculations once or twice without any material investments.
Oventrop CO software
Free software"Oventrop CO" is intended to perform hydraulic calculations for heating a country house.
Oventrop CO was created to provide graphical assistance during the heating design phase. It allows you to perform hydraulic calculations for both one-pipe and two-pipe systems. Working with it is simple and convenient: there is already ready-made blocks, error control is carried out, a huge catalog of materials
Based on preliminary settings and selection of heating devices, pipelines and fittings, new systems can be designed. In addition, it is possible to adjust the existing circuit. It is carried out by selecting the power of existing equipment in accordance with the needs of heated rooms and premises.
Both of these options can be combined in this program, allowing you to adjust existing fragments and design new ones. For any calculation option, Oventrop CO selects the valve settings. In terms of execution hydraulic calculations this program ample opportunities: from selecting pipeline diameters to analyzing water flow in equipment. All results (tables, diagrams, drawings) can be printed or transferred to the Windows environment.
Software "Instal-Therm HCR"
The "Instal-Therm HCR" program allows you to calculate radiator and surface heating systems.
It comes with the InstalSystem TECE kit, which includes three more programs: Instal-San T (for designing cold and hot water supply), Instal-Heat&Energy (for calculating heat losses) and Instal-Scan (for scanning drawings).
The “Instal-Therm HCR” program is equipped with expanded catalogs of materials (pipes, water consumers, fittings, radiators, thermal insulation and shut-off and control valves). The calculation results are presented in the form of specifications for the materials and products offered by the program. The only drawback of the trial version is that it cannot be printed.
Computing capabilities of "Instal-Therm HCR": - selection by diameter of pipes and fittings, as well as tees, shaped products, distributors, bushings and pipeline thermal insulation; - determination of the lifting height of pumps located in the mixers of the system or on the site; - hydraulic and thermal calculations of heating surfaces, automatic determination optimal temperature input (power); - selection of radiators taking into account cooling in the pipelines of the working agent.
The trial version is free to use, but it has a number of limitations. Firstly, as with most shareware programs, the results cannot be printed, nor can they be exported. Secondly, only three projects can be created in each application of the package. True, you can change them as much as you like. Thirdly, the created project is saved in a modified format. Files with this extension will not be read by any other trial or even standard version.
Software "HERZ C.O."
The program "HERZ C.O." is freely distributed. With its help, you can make a hydraulic calculation of both one-pipe and two-pipe heating systems. An important difference from others is the ability to perform calculations in new or reconstructed buildings, where a glycol mixture acts as a coolant. This software has a certificate of conformity from CSPS LLC.
"HERZ C.O." provides the user with the following options: selection of pipes by diameter, settings of pressure difference regulators (branching, base of drains); analysis of water flow and determination of pressure losses in equipment; calculation of hydraulic resistance of circulation rings; taking into account the necessary authorities of thermostatic valves; decrease in circulation rings overpressure by selecting valve settings. For user convenience, graphical data entry is organized. The calculation results are displayed in the form of diagrams and floor plans.
Schematic representation of the calculation results in HERZ C.O. much more convenient than specifications for materials and products, in the form of which the results of calculations in other programs are displayed
The program has developed contextual help that provides information about individual commands or entered indicators. Multi-window mode allows you to simultaneously view several types of data and results. Working with the plotter and printer is extremely simple; before printing, you can preview the output pages.
Program "HERZ C.O." equipped with a convenient function for automatically searching and diagnosing errors in tables and diagrams, as well as quick access to catalog data of fittings, heating devices and pipes
Modern control systems with constantly changing thermal conditions require equipment to monitor changes and regulate them.
It is very difficult to make a choice of control valves without knowing the market situation. Therefore, in order to make heating calculations for the area of the entire house, it is better to use a software application with a large library of materials and products. Not only the operation of the system itself, but also the amount of capital investment that will be required for its organization depends on the correctness of the data obtained.
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