气候变化对天津市不同节能水平建筑制冷采暖能耗的影响

doi:10.3969/j.issn.1673-503X.2020.03.014

Abstract

Abstract:

Based on the hourly data of ground meteorological observation in Tianjin from 1961 to 2017, the heating and cooling energy consumption (CEC) of office buildings, and the heating energy consumption (HEC) of residential buildings with different energy-saving levels were simulated by TRNSYS software.On this basis, the impacts of climate change on energy consumption of buildings with different energy-saving levels in Tianjin were quantitatively evaluated.The results show that temperature increases significantly and solar radiation decreases during the heating and cooling periods.As a result, the HEC and CEC of office and residential buildings decreases obviously and increases slightly during 1961 to 2017, respectively, indicating that the influence of climate change on the HEC is larger than on the CEC.With the improvement of energy-saving level of buildings, both the HEC and CEC show a decreasing trend, especially significant for the HEC.Compared with the one- to three-step residential buildings, the HEC of the four-stage energy saving buildings decreases 53.56%, 50.13% and 21.25%, respectively.Thus, the impact of energy-saving levels on energy consumption of buildings should be taken into account for new buildings and energy efficiency renovations of existing buildings, and upgrading and reconstruction should be conducted according to actual energy demand.In addition, the increasing of the energy-saving level in buildings will promote the variations of the HEC and CEC decreasing with warming, indicating that the sensitivity of building energy consumption to climate change is gradually weakening.Therefore, the increasing of energy-saving level in buildings can play a better role in dealing with climate change and reduce the building energy use in the future.

Key words: Climate change, Energy-saving level, Office buildings, Residential buildings, Energy consumption

CLC Number:

P463

Yue-hao CHEN,Mei-ling SUN,Jing-fu CAO,Ming-cai LI,Rui-xue ZHANG,Fan-chao MENG. Effects of climate change on cooling and heating energy consumption of buildings with different energy-saving levels in Tianjin[J]. Journal of Meteorology and Environment, 2020, 36(3): 98-105.

Figures/Tables 9

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建筑类型	热传导系数/ (W·m^-2/℃)			室内设计环境夏季/冬季			室内荷载			窗墙比
建筑类型	外墙	屋顶	窗户	温度/℃	相对湿度/(%)	换气次数/(h^-1)	人员密度/ (m²/人)	照明产热/(W·m^-2)	设备产热/ W·m^-2)	东	南	西	北
二步办公	0.60	0.55	2.30	26/20	65/35	0.9	10	10	13	0.06	0.47	0.06	0.51
三步办公	0.50	0.45	2.20	26/20	65/35	0.9	10	10	13	0.06	0.47	0.06	0.51
一步居住	1.27	0.90	5.20	26/20	65/35	0.5	10	10	13	0.06	0.47	0.06	0.51
二步居住	0.90	0.80	4.00	26/20	65/35	0.5	10	10	13	0.06	0.47	0.06	0.51
三步居住	0.60	0.45	2.50	26/20	65/35	0.5	10	10	13	0.06	0.47	0.06	0.51
四步居住	0.40	0.25	1.80	26/20	65/35	0.5	10	10	13	0.06	0.47	0.06	0.51

建筑类型	节能水平	能耗	回归方程	R²	P值
办公建筑	二步节能	供热能耗	-4.772×干球温度+107.301	0.884	< 0.001
		制冷能耗	8.180×湿球温度+2.134×太阳辐射-133.911	0.870	< 0.001
	三步节能	供热能耗	-4.651×干球温度+104.168	0.882	< 0.001
		制冷能耗	8.063×湿球温度+2.050×太阳辐射-130.798	0.875	< 0.001
居住建筑	一步节能	供热能耗	-6.555×干球温度+128.515	0.945	< 0.001
	二步节能	供热能耗	-6.091×干球温度+119.642	0.961	< 0.001
	三步节能	供热能耗	-3.967×干球温度+75.873	0.948	< 0.001
	四步节能	供热能耗	-3.281×干球温度+59.906	0.941	< 0.001

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Effects of climate change on cooling and heating energy consumption of buildings with different energy-saving levels in Tianjin

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