|Table of Contents|

[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()
污水源采集凝固热热泵系统的可行性分析
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
污水源采集凝固热热泵系统的可行性分析
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
钱剑峰1, 2, 张吉礼1
1大连理工大学土木工程学院, 大连 116024; 2哈尔滨商业大学能源与建筑工程学院, 哈尔滨 150028
Keywords:
urban sewage;  freezing latent heat;  heat pump;  feasibility
城市污水;  凝固热;  热泵;  可行性
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.
针对常规污水源热泵系统出力常无法满足建筑最大负荷的问题, 提出了在高峰负荷下提取污水凝固潜热作为补充热源的新思路.首先, 结合污水特征设计了一种集除冰、取热、除垢于一体的凝固换热器, 并给出了城市污水源采集凝固热热泵的合理形式.然后, 从理论上分析探讨了新系统的供热潜力.典型的工况计算结果表明, 采集凝固热热泵系统的供热能力大于常规城市污水源热泵系统, 两者的最大供热率之比在4.5~8.7之间, 说明该污水源采集凝固热热泵系统在寒冷地区的应用潜力较大.

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.
Last Update: 2010-06-20