太阳能空气集热器(Solar Air Heater,SAH)与空气供暖相结合,在冬季为室内进行通风供暖是复合供暖的重要研究点。文章对提升SAH的集热性能做出模拟研究分析,在平板双风道SAH基础上,建立双层正弦波纹板SAH数学模型,分析正弦波纹板双风道SA...太阳能空气集热器(Solar Air Heater,SAH)与空气供暖相结合,在冬季为室内进行通风供暖是复合供暖的重要研究点。文章对提升SAH的集热性能做出模拟研究分析,在平板双风道SAH基础上,建立双层正弦波纹板SAH数学模型,分析正弦波纹板双风道SAH的集热性能,对室内供暖热舒适性环境做出研究。研究结果表明,正弦波纹板双风道SAH具有更高的出口温度和集热效率,与平板SAH之间的最大温差约为13.2 K,最大集热效率差约为21.6%。正弦波纹板SAH的散热系数较平板SAH低约10%,正弦波纹板双风道SAH的上下层空气出口温度及集热效率在10:00时最低,在13:00时最高,集热效率最高约为71.04%,最大散热系数约为4.5 W/m^(2)·K。根据SAH逐时计算所得到的出口温度,而研究室内平均温度可得出:室内平均温度在10:00时最低约为287 K,13:00时最高约为290.52 K。正弦波纹板双风道SAH可为冬季室内直接热风供暖使用。展开更多
A nickel(II) complex Ni(DPBP-SAH)2·2CH3CH2OH, (DPBP-SAH=N-(1,3-diphenyl-4-benzylidene-5-pyrazolone)-salicylidene hydrazone), has been synthesized and characterized by elemental analyses, IR spectra and single cry...A nickel(II) complex Ni(DPBP-SAH)2·2CH3CH2OH, (DPBP-SAH=N-(1,3-diphenyl-4-benzylidene-5-pyrazolone)-salicylidene hydrazone), has been synthesized and characterized by elemental analyses, IR spectra and single crystal X-ray diffraction. It belongs to monoclinic, space group C2/c with a=2.737 9(4) nm, b=1.249 2(2) nm, c=1.760 8(2) nm, β=120.212(9)°, Mr=1 065.84, V=5.204(1) nm3, Z=4. The X-ray diffraction reveals that the nickel(II) ion in the title complex is in a slightly distorted octahedral arrangement of the ON donor atoms of two DPBP-SAH and two O-donor atoms in ethanol. CCDC: 249394.展开更多
文摘A nickel(II) complex Ni(DPBP-SAH)2·2CH3CH2OH, (DPBP-SAH=N-(1,3-diphenyl-4-benzylidene-5-pyrazolone)-salicylidene hydrazone), has been synthesized and characterized by elemental analyses, IR spectra and single crystal X-ray diffraction. It belongs to monoclinic, space group C2/c with a=2.737 9(4) nm, b=1.249 2(2) nm, c=1.760 8(2) nm, β=120.212(9)°, Mr=1 065.84, V=5.204(1) nm3, Z=4. The X-ray diffraction reveals that the nickel(II) ion in the title complex is in a slightly distorted octahedral arrangement of the ON donor atoms of two DPBP-SAH and two O-donor atoms in ethanol. CCDC: 249394.
