太阳能热水系统的平均热损因数测试数据

太阳能热水系统平均热损因数是太阳能热水系统重要性能指标，反映了在无太阳辐照条件下，太阳能热水系统内贮水温度与环境温度温差为1k时、单位体积太阳能热水系统的平均热量损失。本数据可以对太阳能热水系统的平均热损因数进行评价，为政府监管和消费者购买提供参考和技术支撑。1、太阳能热水系统平均热损因数按如下公式进行计算：USL=ρw*cpw*ln[(ti-tas(av))/(tf-tas(av))]/Δτ，其中cpw为水的比热容，取值为4186.8J/(kg•℃)；ρw为水的密度取值为1000，单位为kg/m3；ti为贮热水箱内的初始水温，单位为℃；tf为贮热水箱内的最终水温，单位为℃；tas(av)为测试期间贮热水箱附近的平均环境温度，单位为℃；Δτ为测试时间取值为28800，单位为s。2、数据分析：将以上数据按照GB/T 19141-2011《家用太阳能热水系统技术条件》要求，紧凑式和分离式太阳能热水系统的平均热损因数≤16 W/(m3·K)，闷晒式太阳能热水系统的平均热损因数≤80 W/(m3·K)，平均热损因数大于限值为不符合，小于等于限值的为符合。

The average heat loss factor of solar water heating systems is a critical performance indicator, which reflects the average heat loss per unit volume of the solar water heating system when the temperature difference between the stored water temperature and the ambient temperature is 1 K under the condition of no solar irradiation. This dataset can be used to evaluate the average heat loss factor of solar water heating systems, providing reference and technical support for government supervision and consumer purchasing.
1. Calculation formula for the average heat loss factor of solar water heating systems:
USL = ρ_w * c_{pw} * ln[(t_i - t_{as(av)}) / (t_f - t_{as(av)})] / Δτ
Where:
c_{pw} is the specific heat capacity of water, with a fixed value of 4186.8 J/(kg·℃);
ρ_w is the density of water, with a fixed value of 1000, unit: kg/m³;
t_i is the initial water temperature inside the hot water storage tank, unit: ℃;
t_f is the final water temperature inside the hot water storage tank, unit: ℃;
t_{as(av)} is the average ambient temperature near the hot water storage tank during the test period, unit: ℃;
Δτ is the test duration, with a fixed value of 28800, unit: s.
2. Data analysis:
In accordance with the requirements of GB/T 19141-2011 *Technical Specifications for Household Solar Water Heating Systems*, the average heat loss factor of compact and separate solar water heating systems shall be ≤ 16 W/(m³·K), while that of exposed solar water heating systems shall be ≤ 80 W/(m³·K). Systems with an average heat loss factor exceeding the specified limit are deemed non-compliant, and those with a value less than or equal to the limit are deemed compliant.

搜集汇总

数据集介绍

特点

该数据集包含99条太阳能热水系统的平均热损因数测试数据，用于评价系统性能，为政府监管和消费者购买提供参考。数据详细记录了规格型号、温度、检测结果等信息，并依据GB/T 19141-2011标准进行计算和评价。