Key Problem Analysis and Solution on Intake Water and Heat Transfer of Sewage-Source Heat Pump System

Abstract:

Changing "high consumption energy, low temperature heat to the indoor, waste heat to the environment", and turning the HVAC harmoniously into the natural ecological cycle, conform to the trend of the development of ecological architecture. Heat pump technology is a way of HVAC energy saving the most practical. Although low heat and cold source of the city sewage is ideal, but the quality is very unstable, can not meet the operation requirements of heat exchange equipment. This paper analyzes the key problems of the sewage side in sewage source heat pump technology application in the present: hair dirt clog sewage heat exchanger; fouling in heat surface reduces the heat transfer performance, and results in large heat-transfer equipment in the practical application. According to the key problems of sewage side, this paper prevents hair clogged with large tube heat exchanger; reduces the fouling thermal resistance, and enhances heat transfer process using the heat exchanging technology of circulating fluidized bed.

• Periodical: Advanced Materials Research (Volumes 1070-1072)
• Pages: 1799-1802
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1070-1072.1799
• Online since: December 2014
• Authors: Hai Yang Bi*, Yong Mao Shang, Xiang Hong Gu
• Keywords: Clog, Fouling Fluidized-Removing, Heat Transfer Enhancement, Sewage Source Heat Pump

References

[1] Jun Yin, Lei Chen, Heli Wang. Resource regeneration of city sewage and utilization of sewage heat energy. Beijing: Chemical industry press, 2003. In Chinese.

[2] Bi Haiyang, Duanmu Lin, Li Zhen, 2004, SET2005-4th International Conference on Sustainable Energy Technologies, The Key-question Analysis on Reclamation and Utilization of Non-cycle Water Heat Energy and Its Recent Developments, shandong jinan, 407-410.

[3] YOSHII T., 2001, Technology for Utilizing Unused Low Temperature Difference Energy, Journal of the Japan Institute of Energy, 8, P696-706.

[4] Liu Jin-ping, Liu Xue-feng, Kong Qing-jun. Experimental Study on Fouling Resistance of Cooling Water in Condenser of Chiller, Fluid Machinery, 2004, 32(3) In Chinese.

[5] Yang Shan-rang, Xu Zhi-ming, Sun Ling-fang. Fouling and Strategy of Exchange Equipment, Science publishing company, Beijing 2004. 4"In Chinese.

[6] Zheng Ying, Zhu Jingxu, 2000, Overall pressure balance and system stability in a liquid-solid circulating fluidized bed, Chemical Engineering Journal, 79, 2, P145-153. In Chinese.

DOI: 10.1016/s1385-8947(00)00168-6