严寒地区某火力发电厂主厂房室内热环境测试分析

Analysis on the Test of Indoor Thermal Environment in Main Power House of a Thermal Power Plant in Severe Cold Zone

火力发电厂主厂房属于典型的内热强度大的高大空间工业建筑。本文对主厂房室内不同高度温度分布情况、夏季建筑开口通风量、冬季门窗冷风浸入量等进行现场测试,研究了主厂房冬夏两季室内热环境分布的规律,指出中间层为汽机房热环境最不利区域;并通过对比冬夏建筑开口风量数据,提出建筑开口面积的确定原则;同时结合现场测试实际情况,指出在电厂设计及建设中应注重实现门窗气密性要求,从而减弱冬季冷风侵入,降低采暖能耗。

The main power house of thermal power plant belongs to the typical industrial building with large space and high indoor thermal strength.Based on the field test on the distribution of indoor temperature of different heights in the main power house,airflow rate of building openings in summer and air infiltration rate of windows and doors in winter,the distribution rule of indoor thermal environments in winter and summer of main power house was studied in this paper.According to the results,the middle layer for turbine room was the most unfavorable regional environment.In addition,through the comparison of airflow rate of the building openings in winter and summer,the principle for determining the area of building openings was proposed.Based on the actual situations of field test,it is pointed that more attention should be paid to air tightness of doors and windows during design and construction of main power house with a view to reducing cold air infiltration and energy consumption.