本文以给花木大棚供暖为背景,建立锅炉供给功率模型,分别从大棚热负荷与传输损失量两方面进行分析得出锅炉供给功率。首先在大棚热负荷分析中,包括传热损失、渗透热损失和地面热损失三个方面,求和可得温室采暖总热负荷Q。其次在传输损失量的分析中,采用循环热水供暖方式,计算传输过程中室外配管所消耗的热量。最后在安全系数与配管方式系数的校正下较为准确的求得了锅炉供给功率。 In this paper, we give the power supply model of boiler by taking the heating of greenhouse as the background, and analyze the heat load and transmission loss of greenhouse respectively to get the boiler supply power. First, in the greenhouse heat load analysis, including heat loss, heat loss and loss of surface heat loss in three areas, the total sum of available greenhouse heat load Q. Secondly, in the analysis of transmission loss, the circulating hot water heating method is adopted to calculate the heat consumed by the outdoor pipelines in the transmission process. Finally, under the correction of the safety factor and piping coefficient, the boiler supply power is obtained accurately.