Kim Y.J.
(National Institute of Agricultural Engineering)
,
Yun J.H.
(National Institute of Agricultural Engineering)
,
Ryou Y.S.
(National Institute of Agricultural Engineering)
,
Kang G.C.
(National Institute of Agricultural Engineering)
,
Paek Y.
(National Institute of Agricultural Engineering)
,
Kang Y.K.
(National Institute of Agricultural Engineering)
A wind-heat generation system was developed and the system consisted of an electric motor, a heat generation drum, a heat exchanger, two circulation pumps and a water storage tank. The heat generation drum is an essential element determining performance of the system. Frictional heat was generated b...
A wind-heat generation system was developed and the system consisted of an electric motor, a heat generation drum, a heat exchanger, two circulation pumps and a water storage tank. The heat generation drum is an essential element determining performance of the system. Frictional heat was generated by rotation of a rotor in the drum filled with a working fluid, and the heat stored in the fluid was used to increase water temperature through the heat exchanger. Effects of some factors such as rotor shape, kind and amount of working fluid, rotor rpm and water flow rate in the heat exchanger, affecting the system performance were investigated. Amounts of heat generated were varied, ranging from 126,000 to 32,760 kJ/hr, depending on combination of the factors. Statistical analysis using GLM procedure revealed that the most influential factor to decide the system performance was amount of the fluid in the drum. Experiments showed that the faster the speed of the rotor, the greater heat was obtained. The greatest efficiency of the heat generation system, electric power consumption rate vs gained heat amount of water, was about 70%. Though the heat amount was not enough for plant bed heating of a 0.1-ha greenhouse, the system would be promising if some supplementary heat source such as air- water heat pump is added.
A wind-heat generation system was developed and the system consisted of an electric motor, a heat generation drum, a heat exchanger, two circulation pumps and a water storage tank. The heat generation drum is an essential element determining performance of the system. Frictional heat was generated by rotation of a rotor in the drum filled with a working fluid, and the heat stored in the fluid was used to increase water temperature through the heat exchanger. Effects of some factors such as rotor shape, kind and amount of working fluid, rotor rpm and water flow rate in the heat exchanger, affecting the system performance were investigated. Amounts of heat generated were varied, ranging from 126,000 to 32,760 kJ/hr, depending on combination of the factors. Statistical analysis using GLM procedure revealed that the most influential factor to decide the system performance was amount of the fluid in the drum. Experiments showed that the faster the speed of the rotor, the greater heat was obtained. The greatest efficiency of the heat generation system, electric power consumption rate vs gained heat amount of water, was about 70%. Though the heat amount was not enough for plant bed heating of a 0.1-ha greenhouse, the system would be promising if some supplementary heat source such as air- water heat pump is added.
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문제 정의
Overall objective of this study was to develop a wind power based hot water supply system incorporating heat pump for farm sites. Specific objectives of this study were to develop a wind power- heat generation drum and to investigate factors affecting the heat generation performance of the drum.
제안 방법
In this study, a heat generation system consisted of a heat generation drum, a motor, a rotor and stator, two circulation pumps and a heat exchanger was built and tested for its heat generation performance. Several factors affecting the heat generation capacity of the system were investigated.
for farm sites. Specific objectives of this study were to develop a wind power- heat generation drum and to investigate factors affecting the heat generation performance of the drum.
이론/모형
Statistical analysis technique used for this equation was SAS GLM (Generalized Linear Model). ANOVA table by processing PROC GLM is shown in Table 3.
성능/효과
98. It showed that the most important variable affecting heat generation amounts was filling amount whose significant level was 13%, however, rotor shape and interval did not contribute as much as that of filling amount in the heat generation amounts. These trends can be observed in Figure 3 as well.
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