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TEKA
Komisji Motoryzacji i Energetyki Rolnictwa XV_1/2015.
Commission of Motorization and Power Industry in Agriculture
Strona redakcyjna - editorial page - plik PDF
List of the Reviewers - editorial page - plik PDF
Spis treści - plik PDF
Od autora- plik PDF
Wawrzyniec Gołębiewski
Department of Automotive Engineering, West Pomeranian University of Technology in Szczecin
17 Piastów Ave., 70-310 Szczecin, Poland, tel.+48 91 449 40 45, e-mail: wawrzyniec.golebiewski@zut.edu.pl
Theoretical Analysis of the Effect of Traction Parameters on Electric
Vehicle Energy Consumption and Driving Range
- pełny artykuł (full article) - plik PDF
Summary. The paper presents a theoretical analysis of the effect
of electric car performance characteristics on vehicle energy
consumption and driving range. The test object was a Nissan
Leaf electric vehicle. The characteristic curves of basic and additional
resistance to motion (sum of rolling resistance and air
resistance and inertia resistance or grade resistance, respectively)
were applied to the model characteristic curve of electric motor
torque of the tested vehicle.
Based on that, the graphs describing the relationships between
vehicle energy consumption and vehicle speed were made (for
specific values of car acceleration / acclivity grade) as well as the
relations between vehicle driving range and its traction properties.
It was concluded that the use of performance characteristics
significantly increased the vehicles energy consumption and
decreased the available vehicles driving range.
Key words: energy consumption, traction parameters, electric
vehicles driving range
Wawrzyniec Gołębiewski, Tomasz Stoeck
Department of Automotive Engineering, West Pomeranian University of Technology in Szczecin
17 Piastów Ave., 70-310 Szczecin, Poland, tel.+48 91 449 40 45,
e-mail: wawrzyniec.golebiewski@zut.edu.pl, tstoeck@zut.edu.pl
Theoretical Evaluation of Relationships Between Tyre Energy Efficiency
Class and Fuel Consumption of a Passenger Car According to NEDC
- - pełny artykuł (full article) - plik PDF
Summary. The paper presents the simulation analysis determining
the effect of tyre energy efficiency class on fuel consumption
of a passenger car. Calculations were made assuming the wheel
movement on a dry and smooth asphalt road surface. The tests
based on a simulation model were performed on 61 types of tyres,
being characterised by different sizes and energy efficiency classes.
Different values of rolling resistance coefficient were adopted
(in accordance with energy efficiency classes), also, the values
of basic and additional resistance to motion were determined.
Based on them, engine speeds and load torque corresponding
to respective specific fuel consumption were estimated. This
parameter allowed the relationship between average mileage fuel
consumption and tyre energy efficiency class to be determined
on the basis of the NEDC test.
Key words: passenger car, tyre energy efficiency class, fuel
consumption.
Intelligent Building: Comfort and Safety
- pełny artykuł (full article) - plik PDF
Jacek Majcher
Department of Computer and Electrical Engineering, Lublin University of Technology,
20-618 Lublin, Nadbystrzycka 38A, e-mail: j.majcher@pollub.pl
Summary. The paper presents the problem of intelligent installations
in buildings, their construction and integration with other
systems present in the building. Attention has been focused on
systems designed to ensure the safety of property and persons
residing in different facilities. It also discusses ways to control
the microclimate and other aspects of the building so as to obtain
the maximum comfort of the people placed in them. Considering
its high popularity, the smart installation based on the KNX/EIB
standard is further discussed, examples of algorithms for dealing
with security threats are given as well as the functions indicated
which can improve the comfort of using a facility.
Key words: comfort, safety, integration.
Research on Disc Cutting Unit for Cutting Energy Plants
- pełny artykuł (full article) - plik PDF
Henryk Rode, Marcin Chęciński
Warsaw University of Technology, Faculty of Construction, Mechanics and Petrochemistry
Institute of Mechanical Engineering, Department of Mechanical Systems Engineering and Automation
Jachowicza 2, 09-400 Płock, Polska, e-mail: hrode@pw.plock.pl
Summary. The paper presents the results of laboratory tests
concerning the cutting process of basket willow by means of disc
cutting unit. A disc for cutting wood with diameter of 600mm
was used in the tests. The influence of plants moisture and the
rotary speed of the disc of cutting unit on the unitary energy were
determined. The most favorable values of the operating parameters
of the cutting unit were selected according to the minimum
energy requirement in the cutting process of the tested plant.
Key words: cutting process, energy plants, unitary energy of
cutting, moisture, rotary speed of cutting unit, basket willow.
TStudy on the Effects of Changes of Ambient Temperature and Solar
Irradiance on the Efficiency of the Silicon PV Modules
- pełny artykuł (full article) - plik PDF
Mariusz Sarniak
Warsaw University of Technology, Faculty of Civil Engineering, Mechanics and Petrochemistry,
Department of Mechanical Systems Engineering and Automation
Al. Jachowicza 2/4, 09-402 Płock, e-mail: sarniak@pw.plock.pl
Summary. This paper presents the results of measurements of
the operation of a photovoltaic system, connected to the power
grid. The intensity of solar radiation and the ambient temperature
in the location of the installation were simultaneously recorded
in different weather conditions on selected days throughout the
year. For the combined results the analysis of correlation in terms
of efficiency of individual exemplary photovoltaic installation
was conducted.
Key words: photovoltaics, efficiency, solar radiation, ambient
temperature
Energy Analysis of an Air Heat Pump for Hot Water-pełny artykuł (full article) - plik PDF
Mariusz Szreder
Warsaw University of Technology, Faculty of Civil Engineering, Mechanics and Petrochemistry
Department of Mechanical Systems Engineering and Automation
Al. Jachowicza 2/4, 09-402 Płock, e-mail: szreder@pw.plock.pl
Summary. The paper presents selected issues relating to the
energy analysis of the air heat pump for hot water. Experimental
studies on a test stand made it possible to verify the operational
parameters of the heat pump under actual conditions of use.
The study shows that heating the water in the storage tank
with the capacity of 130 dm3 from 25°C to 40°C took approximately
60 minutes and the water heating for another 5°C took
30 minutes longer. The heat pump process in the field of higher
water temperature in the tank is less effective, thus heating the
water in the tank above 50°C is less favorable economically.
Key words: air heat pump, condenser, rotary compressor, storage
tank, coefficient of performance COP.
Use of Solar Collectors on the Example of a Water-Park
Part 1: Technical Analysis
- pełny artykuł (full article) - plik PDF
Karol Tucki
Department of Production Management and Engineering, Warsaw University of Life Sciences SGGW
Nowoursynowska 166, 02-787 Warsaw, karol_tucki@sggw.pl
Summary. The paper contains the technical analysis of the carried
out modernisation of the facilities of a water-park consisting
in fitting solar collectors for the heating of tap hot water and
central heating system. The article includes information on the
modernisation carried out with a particular emphasis on analysing
the way in which the equipment has been selected and technical
solutions employed.
Key words: solar collectors, technical analysis, swimming pool,
modernisation.
Use of Solar Collectors on the Example of a Water-Park
Part 2: Economic Analysis
- pełny artykuł (full article) - plik PDF
Karol Tucki
Department of Production Management and Engineering, Warsaw University of Life Sciences SGGW
Nowoursynowska 166, 02-787 Warsaw, karol_tucki@sggw.pl
Summary. The paper contains the economic analysis of the carried
out modernisation of the facilities of a water-park consisting
in fitting solar collectors for heating of tap hot water and central
heating system. The article presents the data showing investment
outlays, operating costs and the calculations concerning
the payback time.
Key words: solar collectors, economic analysis, profitability,
modernisation.
Technical Economic Analysis of a 0,8MW Agricultural Biogas Plant
- pełny artykuł (full article) - plik PDF
Karol Tucki, Mikołaj Kominek
Department of Production Management and Engineering, Warsaw University of Life Sciences SGGW
Nowoursynowska 166, 02-787 Warsaw, karol_tucki@sggw.pl
Summary. The article focuses on selected aspects of the technical
and economic analysis of the 0.8 MW agricultural biogas
plant. The electrical power, generated in a cogeneration system,
fed power to the neighbouring overhead power grid, Węgrów
Sokołów Podlaski, while the heat energy recovered from combustion
gases and liquids cooling the engine was used to heat
digesters, a residential building, drying room and farm buildings.
The planned annual production equals c.a. 6400 MWh per year
given the 8000 h of engine operation. The substrates used as input
for the digestive chambers were as follows: fermented maize,
pig slurry and liquid digestate pulp.
Key words: engine, digestive chamber, biogas, electrical power.
Modernisation of a Coal-Fired Heating Plant to Switch to Woodchips,
in Accordance with Logistics Principles
- pełny artykuł (full article) - plik PDF
Karol Tucki, Michał Sikora
Department of Production Management and Engineering, Warsaw University of Life Sciences SGGW
Nowoursynowska 166, 02-787 Warsaw, karol_tucki@sggw.pl
Summary. The article analyses selected aspects of the technology
and logistics used to modernise a coal-fired heating plant to
switch to woodchips, which is illustrated with a specific investment.
The study presents characteristics of the investments heat
economy before the modernisation, as well as the assumptions
and program of the project. Finally, selected effects of the modernisation
have been described.
Key words: heating plant, modernisation, woodchips, power
engineering.
Technical and Logistics Analysis of the Extension
of the Energy Supply System with the Cogeneration Unit
Supplied with Biogas from the Water Treatment Plant
-pełny artykuł (full article) - plik PDF
Karol Tucki, Michał Sikora
Department of Production Management and Engineering, Warsaw University of Life Sciences SGGW
Nowoursynowska 166, 02-787 Warsaw, karol_tucki@sggw.pl
Summary. This paper shall present and explain the key aspects
related to the issue of combined heat and power generation (CHP
Combined Heat and Power or Cogeneration). The cooperation
with the water treatment plant launched allowed a closer look
at the described technology as well as allowed the analyses and
survey. The survey on the efficacy of the selected components
of the cogeneration system was based on two cogeneration units
fuelled with biogas produced in the sewage fermentation.
Key words: biogas, cogeneration, electricity, heat, generator,
water treatment plant.
Selected Issues of the Economic Analysis of a Heating System
with the Direct Evaporation Heat Pump
- pełny artykuł (full article) - plik PDF
Karol Tucki, Michał Sikora, Magdalena Karlikowska, Wojciech Będkowski
Department of Production Management and Engineering, Warsaw University of Life Sciences SGGW
Nowoursynowska 166, 02-787 Warsaw, karol_tucki@sggw.pl
Summary. The article addresses the issues falling within the
scope of the economic analysis of a detached buildings heating
system with a direct evaporation ground source heat pump
installation. The paper was elaborated based on the data made
available by the investments contractor and the investor. The
paper provides data on the investment expenditures and utility
cost, calculations of the installation payback, internal return rate
and the current net value.
Key words: heat pump, economic analysis, heating system,
investment.
Selected Issues of the Technical Analysis of a Heating System
Using the Direct Evaporation Heat Pump
- pełny artykuł (full article) - plik PDF
Karol Tucki, Michał Sikora, Magdalena Karlikowska, Wojciech Będkowski
Department of Production Management and Engineering, Warsaw University of Life Sciences SGGW
Nowoursynowska 166, 02-787 Warsaw, karol_tucki@sggw.pl
Summary. The article describes selected issues falling within
the scope of the technical analysis of a detached buildings heating
system with a direct evaporation ground source heat pump
installation. This paper covers the characteristics of modernized
facility as well as calculations to determine the heat demand.
What is more, the article describes the manner in which heat
pumps shall be selected, its installation components as well as
the receiving installation.
Key words: heat pumps, renewable energy sources, energy management,
environment.
3D Analysis of Machining of Wind Turbine Blade
Using CAD/CAM Software
Part 1. Selection of Aerodynamic Profile of a Wind Turbine Blade
- pełny artykuł (full article) - plik PDF
Karol Tucki, Mateusz Zimoch
Department of Production Management and Engineering, Warsaw University of Life Sciences SGGW
Nowoursynowska 166, 02-787 Warsaw, karol_tucki@sggw.pl
Summary. This work analyzes the process of construction and
manufacturing of a blade used in a wind turbine. The calculation
scheme is presented for forces generated on the blade of a wind
turbine and parameters are determined of weather conditions in
which the designed element would be working. Subsequently, for
the chosen aerodynamic profile the characteristics are calculated
of its aerodynamic coefficients, which enables the establishing
of the angle of attack which impacts the yield of wind engines.
The presented process is an introduction to 3D modelling of
a wind turbines blade and simulation of its creation in a CAM
environment.
Key words: blade, wind turbine, aerodynamics, calculations.
3D Analysis of Machining of Wind Turbine Blade
Using CAD/CAM Software
Part 2. Wind Turbine Blade Modelling
- pełny artykuł (full article) - plik PDF
Karol Tucki, Mateusz Zimoch
Department of Production Management and Engineering, Warsaw University of Life Sciences SGGW
Nowoursynowska 166, 02-787 Warsaw, karol_tucki@sggw.pl
Summary. This work is an analysis of construction and creation
of a 3D model of a wind turbine blade in a CAD environment,
using SOLIDWORKS on the basis of forces influencing the
blade, which were determined using WIATRAK 1.1 software.
The presented process is related to the issues of 3D modelling
of a wind turbine blade and simulation of fabrication process in
the CAM environment.
Key words: geometry, blade, aerodynamic forces, calculations.
3D Analysis of Machining of Wind Turbine Blade
Using CAD/CAM Software
Part 3. Simulation of machining in CAM environmentn
- pełny artykuł (full article) - plik PDF
Karol Tucki, Mateusz Zimoch
Department of Production Management and Engineering, Warsaw University of Life Sciences SGGW
Nowoursynowska 166, 02-787 Warsaw, karol_tucki@sggw.pl
Summary. This work is an analysis of fabrication of a prior-designed
wind turbine blade using the CAM system software. The
presented research was realized on a 5-axis CNC machine.
Key words: driven element, subsoil application,
chemical means application, plant protection, foam layer.
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