REDUCTIONS IN ENERGY CONSUMPTION AND CO2 EMISSIONS FOR GREENHOUSES HEATED WITH HEAT PUMPS

文献类型： 外文期刊

第一作者： Tong, Y.

作者： Tong, Y.;Tong, Y.;Tong, Y.;Kozai, T.;Ohyama, K.;Nishioka, N.

作者机构：

关键词： Coefficient of performance;Energy utilization efficiency;Renewable energy

期刊名称：APPLIED ENGINEERING IN AGRICULTURE （ 影响因子：0.985； 五年影响因子：1.02 ）

ISSN： 0883-8542

年卷期： 2012 年 28 卷 3 期

页码：

收录情况： SCI

摘要： In the greenhouse industry, it is essential to use energy efficiently by operating economically feasible heating systems instead of the traditional combustion-based heating systems. In our experiment, a heating system with household heat pumps was operated at nighttime. Another heating system with a kerosene heater was used as a comparison. We compared the energy consumption, energy utilization efficiency, CO2 emissions and energy costs of two heating systems. When the inside air temperature was maintained at around 16 degrees C while the outside air temperature ranged between -5 degrees C and 6 degrees C, the results showed that 1) the energy consumption was 25% to 65% lower in the greenhouse with heat pumps (G(hp)) when compared to the greenhouse with a kerosene heater (G(kh)), 2) the energy utilization efficiency of the heat pumps was 1.3 to 2.6 times higher than that of the kerosene heater, 3) CO2 emissions were reduced by 56% to 79% in the G(hp) when compared to the G(kh), and 4) energy cost was lower in the G(hp) when compared to the G(kh). These results indicate that the heat pump system is found more efficient than the kerosene heating system and economically feasible for greenhouse heating.

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