热电厂吸收式热泵制热量对系统的影响及确定方法
System impact and determination method of absorption heat pump heating capacity in thermal power plants
摘要：
吸收式热泵的引入对热电系统的发电功率和冷却排热会产生影响,吸收式热泵制热量越大,新增发电功率越大,冷却排热越小。新增发电功率约为吸收式热泵余热回收量与新增制热量之差的12%,冷却排热减少量等于新增发电功率与新增制热量之和。通过建立吸收式热泵模型并绘制了供热特性曲线,确定吸收式热泵供热温度和最大制热量。结合热网供热曲线确定吸收式热泵最经济制热量为热网最大负荷的75%。最终吸收式热泵制热量选取最大制热量和最经济制热量中的较小值。
Abstract：
The introduction of the absorption heat pump (AHP) affects power generation and cooling heat rejection. The larger the heating capacity of AHP is, the greater the additional power generation is, and the less the cooling heat rejection is. The additional power generation is about 12% of the difference between the waste heat recovery of AHP and the additional heating capacity. The reduction of cooling heat rejection is equivalent to the sum of the additional power generation and the additional heating capacity. The heating temperature and maximum heating capacity of AHP are determined by establishing AHP model and plotting the heating characteristic curve. Combined with the heating curve of the heat network, it is determined that the most economical heating capacity of the AHP is 75% of the maximum load of the heating network. The final AHP heating capacity is taken as the smaller of the maximum heating capacity and the most economical heating capacity.
Keywords:thermal power plant; combined heat and power system; absorption heat pump (AHP); heating capacity; characteristic curve; heating curve of heating network