Abstract
Sewage evaporator is the critical component which affects the performance of the direct sewage source heat pump unit. The sewage directly flows into the evaporator and exchanges heat with the refrigerant. The performance of sewage evaporator is different from the general water source heat pump units because of the characteristic of sewage. This paper developed a theoretical model with sewage FRE distribution parameters based on some reasonable simplifications, and this model was applied to predict the performance of some sewage evaporator and analyze the influence of different tubes and pass arrangements and different sewage inlet temperature and flux on evaporator performance. The results show that there is little effect on the sewage FRE performance with different pass arrangement. The evaporator heat exchange increases linearly with the rise of sewage inlet temperature when the sewage flux and refrigerant inlet conditions are fixed. The evaporator heat exchange and flow resistance increase with the sewage flux raises when the sewage inlet temperature and refrigerant inlet conditions are constant. In addition, the change extent of heat exchange is similar to that of the flux change.
Keywords
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Casciaro S, Tome JR (2001) Thermal performance of flooded evaporators, part 1: review of boiling heat transfer studies. ASHRAE Trans 107(1):903–918
Browne MW, Bansal PK (1999) Heat transfer characteristics of boiling phenomenon in flooded refrigerant evaporators. Appl Therm Eng 19:595–624
Webb RL, Choi KD, Apparao TR (1989) A theoretical model for prediction of the heat load in flooded refrigerant evaporators. ASHRAE Trans 95(1):326–338
Webb RL, Apparao TVVR, Choi KD (1989) Prediction of the heat duty in flooded refrigerant evaporators. ASHRAE Trans 95(1):339–348
Huang X, Wang Q, Wang R (2004) Prediction of the performance of flooded refrigerant evaporators based on a distributed parameter model. J Shanghai Jiaotong Univ 38(7):1164–1169
Webb RL, Choi KD, Apparao TR (1989) A theoretical model for prediction of the heat load in flooded refrigerant evaporators. ASHRAE Trans 95(1):326–338
Acknowledgments
Supported by Doctoral Research Fund of Shandong Jianzhu University (XNBS1226)
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2014 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Zhuang, Z., Pang, H. (2014). Heating Transfer Characteristics Analysis on the Flooded Refrigerant Evaporator Using Untreated Sewage Heat Energy. In: Li, A., Zhu, Y., Li, Y. (eds) Proceedings of the 8th International Symposium on Heating, Ventilation and Air Conditioning. Lecture Notes in Electrical Engineering, vol 263. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-39578-9_15
Download citation
DOI: https://doi.org/10.1007/978-3-642-39578-9_15
Published:
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-39577-2
Online ISBN: 978-3-642-39578-9
eBook Packages: EngineeringEngineering (R0)