[1] Qian Jianfeng, Zhang Jili,. Feasibility analysis of urban sewage source heat pump systemwith freezing latent heat collection [J]. Journal of Southeast University (English Edition), 2010, 26 (2): 324-326. [doi:10.3969/j.issn.1003-7985.2010.02.040]

Copy

Feasibility analysis of urban sewage source heat pump systemwith freezing latent heat collection()

Share：

Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

26

Issue:

2010 2

Page:

324-326

Research Field:

Energy and Power Engineering

Publishing date:

2010-06-30

Info

Title:

Feasibility analysis of urban sewage source heat pump systemwith freezing latent heat collection

Author(s):

Qian Jianfeng¹;  2;  Zhang Jili¹

¹ School of Civil Engineering, Dalian University of Technology, Dalian 116024, China
²School of Energy and Construction Engineering, Harbin University of Commerce, Harbin 150028, China

Keywords:

urban sewage;  freezing latent heat;  heat pump;  feasibility

PACS:

TU831.6

DOI:

10.3969/j.issn.1003-7985.2010.02.040

Abstract:

Aiming to resolve the problem that conventional sewage source heat pump systems cannot satisfy heat peak loads of buildings, a new idea that the freezing latent heat is exacted as the auxiliary heat source at the peak heat load is proposed.First, on the basis of sewage characteristics, a freezing latent heat exchanger is developed to safely eliminate ice, continuously extract heat and remove sewage soft-dirt.A reasonable form of the urban sewage source heat pump system with freezing latent heat collection is presented.Then, the feasibility of the system is theoretically analyzed.The calculation results under typical operating conditions show that the heating ability of the new system is higher than that of the conventional one and the ratio of these two highest heating rates is between 4.5 and 8.7, which proves that the new system has great application potential in cold regions.

References:

[1] Funamizu N, Iida M.Reuse of heat energy in wastewater:implementation examples in Japan [J].Water Science and Technology, 2001, 43(10):277-286.
[2] Narita K.Energy recycling system for urban waste heat [J].Energy and Buildings, 1991, 16(1):553-560.
[3] Arashi N, Inaba A.Evaluation of energy use in district heating and cooling plant using sewage and one using air as heat source [J].Journal of the Japan Institute of Energy, 2000, 79(5):446-454.
[4] Sun D X.Heat pump systems and equipment exploiting freezing heat from cold water [J].Journal of Heating Ventilating and Air Conditioning, 2006, 36(7):41-44.(in Chinese)
[5] Qian J F, Sun D X.Theoretical analysis on characteristics of freezing and performance of heat transfer in heat pump system with freezing latent heat collection [J].Acta Energiae Solaris Sinica, 2007, 28(11):1200-1205.(in Chinese)
[6] Qian J F, Sun D X, Zhuang Z Y.Optimization and analysis of the urban sewage source heat pump system by finite time thermodynamics theory[C]//Proceedings of the 5th International Symposium on Heating, Ventilating and Air Conditioning.Beijing, China, 2007:923-926.
[7] Kitanovski A.Flow patterns of ice slurry flows[C]//Fifth Workshop on Ice Slurries of the International Institute of Refrigeration.Stockholm, Sweden, 2002:51-59.
[8] Knodel B, Choi U.Heat transfer and pressure drop in ice-water slurries [J].Applied Thermal Engineering, 2000, 20(7):671-685.

Memo

Memo:

Biographies: Qian Jianfeng(1979—), male, doctor;Zhang Jili(corresponding author), male, doctor, professor, zhangjili@hit.edu.cn.
Foundation items: The National Key Technology R&D Program of China during the 11th Five-Year Plan Period(No.2008BAJ12B05-05), the Research Foundation of Education Bureau of Heilongjiang Province, China(No.11551114), the China Postdoctoral Science Foundation(No.20100471438).
Citation: Qian Jianfeng, Zhang Jili.Feasibility analysis of urban sewage source heat pump system with freezing latent heat collection[J].Journal of Southeast University(English Edition), 2010, 26(2):324-326.

Common functions