发表刊物：Applied Thermal Engineering

关键字：Solar heating systemOffice buildingTime-zoned heatingDual-objective optimization modelEconomy

摘要：Time-zoned heating combined with solar heating system can improve building energy conservation, but the combined system design method is significantly different from conventional systems. Therefore, this study proposes a general overall optimization design method for solar heating system with Time-zoned heating mode from the overall consideration of system operational performance and building heating effectiveness. In addition, a Dual-objective optimization model that balances economic and heating performance has been proposed. Take an administrative office building with Time-zoned heating mode in Lhasa as an example, this study provides a suggested range of design parameters based on the analysis of the effects of different ratio of heat storage tanks volume to solar collector area (Vt/Ac). The optimization of solar collector area, heat storage tank volume, auxiliary heat source power, are achieved by employing levelized cost of heat (LCOH) and non-guaranteed heating hours as the optimization objectives. The study results indicate that the optimal Vt/Ac ratios are 0.02–0.04 m3/m2 for better system operational performance and 0.02–0.08 m3/m2 for better building heating effectiveness. Non-guaranteed heating hours occur mostly during the initial 1–2 h of heating start-up on weekdays. Meanwhile, when the non-heating guarantee hours are limited to 3500–4000 h, the solar heating system design scheme obtained from the optimized model has a certain degree of economic viability. Reducing the cost of solar collectors and heat storage tanks can help obtain more competitive solar heating system design solutions. The research results can provide new method and reference for designing solar heating system with Time-zoned heating mode.

合写作者：张睿超,余作相

第一作者：默哲龙

论文类型：期刊论文

通讯作者：王登甲

卷号：256

是否译文：否

发表时间：2024-01-01