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1
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Effektivnoct' dvukhstupenchatogo teploutilizatora na teplobykh trubakh

100%
Kulikova N., Red'ko A.
Motrol. Motoryzacja i Energetyka Rolnictwa
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2013
|
tom 15
|
nr 6
2

Three-pipe concentric heat exchanger for sty

88%
Hunko I., Prishliak V., Yaropud V., Branitskyy Y.
Motrol. Motoryzacja i Energetyka Rolnictwa
|
2017
|
tom 19
|
nr 3
3
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

The heat exchange character methods of analysis

88%
Piotrowska E., Skowronski P.
Annals of Warsaw University of Life Sciences - SGGW. Agriculture
|
2016
|
nr 68
4

Erdwarmetauscher fur Schweinestalle

75%
Van Caenegem L.
Zeszyty Naukowe Akademii Rolniczej w Krakowie. Sesja Naukowa
|
1997
|
tom 49
5

Recovery of heat in the aerobic phase of composting process of municipal waste

75%
Klejment E., Rosinski M.
Archiwum Ochrony Środowiska
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2005
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tom 31
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nr 1
6
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Factors influencing the energy efficiency in dairy processing plants

63%
Wojdalski J., Kaleta A., Drozdz B., Chojnacka A.
Teka Komisji Motoryzacji i Energetyki Rolnictwa
|
2012
|
tom 12
|
nr 1
7
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Energy efficiency of ground heat exchangers co-operating with a compressor heat pump

63%
Kurpaska S., Latala H.
Teka Komisji Motoryzacji i Energetyki Rolnictwa
|
2012
|
tom 12
|
nr 2
8
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Energy efficiency of ground heat exchangers co-operating with a compressor heat pump

63%
Kurpaska S., Latala H.
Teka Komisji Motoryzacji i Energetyki Rolnictwa
|
2012
|
tom 12
|
nr 1
9

Modification of the method for assessment of heat exchangers for heat recuperation from ventilation air

63%
Adamovsky D., Adamovsky R., Rutkowski K.
Annual Review of Agricultural Engineering
|
2009
|
tom 07
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nr 1
10

Results of the comparative exploitation study on the vertical heat exchanger in winter and summer

63%
Szulc R., Laska B.
Intercathedra
|
2012
|
tom 28
|
nr 3
Investigations of the heat acquisition from vertical ground heat exchangers were performed. From April to September 9.242 GJ of heat from ground boreholes have been obtained and the heat pump processing achieved 23.107 GJ of total heat used in the heating system. Coefficient of performance (COP) was 2.504 in spring and 1.981 in summer and compared to the heating period (winter) was 26.4 per cent lower with a COP of 3.05. The reason for reduction of the COP was probably high air temperatures in spring and summer (as confirmed by the correlation coefficient r = -0.178 in spring and r = -0.559 in summer).
11
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Influence of aerodynamic characteristics on the heat exchanging in the cooling system

63%
Gusentsova E.
Teka Komisji Motoryzacji i Energetyki Rolnictwa
|
2012
|
tom 12
|
nr 3
The adequate mathematical model of diesel locomotive cooling device is offered. The solution of this model is received by numerical method of calculation. The optimization criterion and the method of accounting the influence of aerodynamics on heat exchange process are offered.
12
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Feasibility of using heat-recovery exchangers in livestock buildings at a site at a specific altitude with a specific average outdoor air temperature

51%
Sleger V., Neuberger P., Polak M.
Infrastruktura i Ekologia Terenów Wiejskich
|
2009
|
nr 07
The installation of an energy-saving facility must be preceded by analysis of its financial effectiveness. Among methods enabling such evaluation is the basic net profit calculation method. For this, the annual consumption of electricity for ventilation or of thermal energy for heating must be determined. The calculation formula uses the sum of energies for temperatures within the range from the calculation temperature for the area in question to the long-term average of the maximum temperature at the site, or to the temperature at which the heating power is zero. It is necessary to know the summary time of occurrence of a given temperature during a year. The site data can only be assessed based on long-term meteorological information. In fact, data used by current national standards to describe climatic conditions in the Czech Republic are from the years 1901 to 1950. The dependence of the average yearly temperature on altitude is shown in Fig. 1 for the 1961 1990 and 1991 2000 periods. It is evident that the average temperatures for the latter period are nearly 0.6 K higher than those for the former period, irrespective of the altitude. In this paper the climatic conditions are assessed based on daily data measured throughout the period from 1 January 1991 to 31 December 2000. Weather stations were selected so as to achieve a uniform coverage and continuity of measurement at each site (as far as possible). All the stations lie in the Czech Republic between 48.8° and 50.8° north latitude at altitudes from 158 m to 1324 m. It was the objective of this examination, based on the meteorological data collected to calculate the average number of days and hours during which the temperature during the year is lower than a specific limiting level, in dependence on the average yearly temperature of the site. Fig. 3 shows the average number of days in a year during which a temperature lower than a selected limiting level occurs, as calculated for the 1991 2000 period. The results are presented for 4 areas with average yearly temperatures of 6 °C 7 °C, 7 °C 8 °C, 8 °C 9 °C, and 9 °C 10 °C, respectively. The graphs enables us to ascertain the number of days during which a heating facility is in operation if the facility is activated by outdoor air temperature decrease to below a specific limiting level. If a typical daily temperature wave is considered, the method makes it possible to estimate the number of hours during which the air temperature is lower than the limiting level chosen. The difference between the data for various limiting levels allows us, for an area with a specific average yearly temperature to ascertain the time of occurrence of outdoor temperature within various ranges. The results of calculations are shown in Fig. 4 and Table 1. The method applied enables underlying data to be prepared for the assessment of energy demands for air heating at a given site and for estimation of the energy savings that could be achieved by installing economical air heating facilities in livestock buildings.
13
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Verification of the effects of the secondary heat recovery from ventilation air in an animal house for the fattening of broiler chickens

51%
Adamovsky R., Adamovsky D., Kara J., Neuberger P.
Infrastruktura i Ekologia Terenów Wiejskich
|
2008
|
nr 06
This paper presents results of the verification of a heat exchanger composed of gravitation thermal pipes installed in a broiler chicken feeding facility. The objective of the study was to verify the possibility of the application of a power management system including a heat recovery system in a heavy-duty environment of a broiler chicken fattening facility and to specify effects of the system upon the specific consumption of energy for space heating and ventilation of the animal house. The calculation of the thermal balance of the animal house documents that the power management system that includes a heat recovery exchanger unit may reduce the thermal capacity of external sources of heat in the animal house by 26.5% even when subject to extreme conditions and at the atmospheric temperature of -12°C and the age of chickens being 1 day. The results of the metering and calculations of the efficiency have proven that the heat exchanger reaches the operational efficiency of 10–47% and thermal efficiency of 20–80% even during the most demanding operational first twenty days of the breeding cycle of broiler chickens. The specific consumption of energy for space heating and ventilation related to 1 kg of the live weight of chicken in the animal house facility A provided with a heat recovery exchanger unit at the average atmospheric temperature during the cycle being 4.3°C amounted to 278.5 Wh. In the animal house B as not provided with the heat recovery exchanger units hosting the same number of chickens and provided with the same process and thermal loss due heat transmission through peripheral structures being one half compared to the animal house A, the specific consumption of energy per 1 kg of the live weight of chicken was 420.5 Wh.
14
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Zagadnienia optymalizacji warunków termicznych energooszczędności brojlerni

45%
Bieda W., Herbut E., Radon J.
Acta Scientiarum Polonorum. Architectura
|
2006
|
tom 05
|
nr 1
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