The Application of On-Off Regulation in Public Buildings

Abstract:

Focusing on the phenomenon that many office buildings and student apartments in northern China with vertical single tube series heating systems are of high energy consumption and waste lots of thermal energy because of lacking heating regulation, this paper proposed a system of on-off regulation to optimize the regulation, where on-off values are installed in each vertical riser, indoor temperature controllers are installed in the room with lower temperature, and the on-off values control circulating water automatically according to the difference between the real temperature and the set temperature and finally the indoor temperatures are controlled. The temperature control effect and energy saving effect of this system were discussed in both simulation and measurement. The conclusion shows that: 1) the proposed system can optimize heating regulation and reduce the loss cause of heating non-uniformity.2) the on-off control on the flow of single vertical tube makes temperature of all rooms stringed in the riser meet the requirements.3) the indoor temperature differences in the same riser are controlled in 2 °C.4) in practical, users on-time is only 50% of total time through on-off regulation, the effect of energy saving is significant.

• Periodical: Advanced Materials Research (Volume 918)
• Pages: 325-330
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.918.325
• Online since: April 2014
• Authors: Lan Bin Liu*, Ai Juan Zou, Li Xia Ma, Ya Meng Liu
• Keywords: Energy Saving, On-Off Regulation, Public Building, Vertical Single Tube Series System

References

[1] Ping he, Gang Sun, Fei Wang, Huaxin Wu. Heating engineering. China Building Industry Press, 2009. 8.

[2] Lanbin Liu, Lin Fu, Yi Jiang, et al., Major issues and solutions in the heat metering reform in China, Renewable and Sustainable Energy Reviews 2011(15): 673-680.

DOI: 10.1016/j.rser.2010.08.009

[3] Lanbin Liu, Lin Fu, Yi Jiang. A new wireless on-off control, technique for adjusting and metering household heat in district heating system[J]. Applied Thermal Engineering, 2012(36): 202-209.

DOI: 10.1016/j.applthermaleng.2011.11.040

[4] Liu L, Fu L, Wang C, et al. A novel on-off TRV adjustment model and simulation of its thermal dynamic performance[C]. Building Simulation. 2009, 2(2): 109-118.

DOI: 10.1007/s12273-009-9208-y