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Dynamic thermal simulation of ground heat exchangers for renewable heating of buildings

Gan, Guohui

Authors

GUOHUI GAN guohui.gan@nottingham.ac.uk
Associate Professor



Abstract

The temperature of deep soil is relatively stable throughout a year and the thermal energy stored in soil can be used to provide renewable heat or coolth for a building. A ground heat exchanger is required to transfer heat between the fluid in the heat exchanger and surrounding soil. The control volume method is used to solve the equations for coupled heat and moisture transfer in soil and the dynamic interactions between the heat exchanger, soil and atmosphere. The method is used for numerical simulation of the dynamic thermal performance of horizontally coupled heat exchangers, taking account of dynamic variations of climatic, load and soil conditions. The thermal performance is compared for two types of ground heat exchangers - earth-liquid heat exchanger for a ground source heat pump and earth-air heat exchanger for ventilation. The amount and rate of heat transfer through an earth-liquid heat exchanger are larger than those for an earth-air heat exchanger and their differences increase with the length of heat exchanger and operating time.

Publication Date Jun 27, 2016
Peer Reviewed Peer Reviewed
APA6 Citation Gan, G. (2016). Dynamic thermal simulation of ground heat exchangers for renewable heating of buildings
Keywords Ground Heat Exchanger, Heat and Moisture Transfer, Dynamic Thermal Simulation
Related Public URLs https://www.nottingham.ac.uk/conference/fac-eng/ihts-hpc2016/index.aspx
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingh.../end_user_agreement.pdf

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IHTS-9031.pdf (707 Kb)
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Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf





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