太阳能与生物质能联合驱动吸附制冷系统的适配性分析

针对生物质能作为辅助能源用于太阳能吸附制冷系统供冷的适配性,以已搭建的太阳能与生物质能联合驱动吸附式制冷试验台为研究对象,试验研究了双热源联合运行供能耦合的可能性。采用MATLAB软件动态模拟了双热源串、并联运行工况,并借助非线性最小二乘法对数据进行处理、分析。结果表明:串联运行时,按照模式2工况循环流动,可较好地实现系统热量的传递;并联运行时,通过对太阳能与生物质能联合供能的适配性研究,结合系统末端供冷需求和经济运行模式分析,得出太阳能与生物质能联合供能的最佳回水流量分配比值范围为0.5~0.6,提出适宜于双热源联合供能3种经济运行模式。研究结果可为改善制冷系统性能的稳定性、实现太阳能与生物质能的有效结合提供参考。

Suitability analysis of solar energy and biomass energy for adsorption refrigeration system

Energy is an important material foundation for the current national accounts and social economic sustainable development.With the continued rapid growth of social and economic development and energy demand, the environmental pollution is worsening, so the development and use strategy of the alternatives to fossil fuels, such as solar energy and biomass renewable energy, attracted more and more attention.Based on Chinas rural industrial structure adjustment and industrial model of development situation of farmers in the present, the suitability of biomass energy as an auxiliary energy for solar energy adsorption refrigeration system was studied.An adsorption refrigeration experimental station was set up, which was driven by solar energy and biomass energy for the study, and the matching suitability of energy coupling by 2 heat sources was experimentally studied.Whether biomass energy and solar energy matched or not had a greater impact on the capacity of the system, reflecting that the cooling capacity of the system and the heat load of the end had the change characteristics in the same direction.Biomass boilers and solar absorption refrigeration system combined with the actual match drive and operation were analyzed.In this paper, we studied the biomass energy and solar energy suitability (coupling process) problems by the system simulation and experimental testing.The operating conditions of series and parallel of dual heat sources were dynamically simulated using the MATLAB software, and the nonlinear least square method was used for data processing and analysis.The results showed that:when operating in series, according to the circulation under the mode 2 condition, the system could achieve better heat transfer; when it was in the parallel operation, by the research on the energy supply by solar energy and biomass jointly, combined with the analysis of the cooling requirement and economic operation mode of the end of the system, the optimum return flow distribution ratio for the energy supply jointly by solar and biomass energy was in the range of 0.5-0.6, and 3 modes of economic operation suitable for the joint energy supply by dual heat sources were proposed.The results can provide the reference for improving the stability of the refrigeration system performance and achieving the effective integration of solar energy and biomass energy.