Abstract
As an emerging geothermal structure, the energy tunnel has been an important part of geothermal engineering. However, the conventional methods for designing energy tunnels mostly rely on complex numerical models. Furthermore, a macrolevel multidomain collaborative design method to consider multiple areas and design indicators is unavailable. This study combined ontology and semantic Web rule language to establish the domain knowledge of energy tunnels which is an enrichment of the conventional ground source heat pump domain knowledge and develop a comprehensive decision-making tool named OntoETS for the design of energy-tunnel systems. The tool can promote the optimal design scheme with an optimal combination of multiple indexes through an analysis of the economy, heat flux, and system feasibility of the energy-tunnel system from a macroperspective by combining multiple domains. Furthermore, a case study was conducted to demonstrate the effectiveness and practicability of the developed holistic decision-making system.
Highlights
Heat exchanger construct energy tunnels and presents the potential for their construction and promotion
Conclusions e OntoETS decision-making system developed in this study can design complex technical energy tunnels holistically and evaluate from a macroperspective to promote the optimal design scheme. ereby, the designers can obtain multiple performance indicators from a macroperspective by using this tool to select and optimize the design scheme. is can improve design efficiency and promote the application of energy tunnels
Is study combined the ontology and SWRL rule to construct the domain knowledge of energy tunnels, which is an enrichment of the conventional ground source heat pump (GSHP) domain knowledge
Summary
E cost calculation includes the heat exchange pipe cost, main conduit cost, cost of the connection pipe between the indoor system and ground source system, heat pump cost, and total cost. Ni represents the number of the ith prefabricated segment rings, and CTP is the heat exchange pipe cost of the energy tunnel. E first method calculates it using the heat exchange capacity per square meter of the prefabricated segment ring (W/m2), which is determined by a thermal response test (TRT). E heat transferred by the tunnel can be calculated by the heat exchange per unit area of the tunnel, which is determined by a thermal response test. En, Aexchange represents the area (m2) of the ith type of segment ring for heat exchange. I 1 where i represents the ith prefabricated segment ring of the tunnel and Aexchange represents the area (m2) of the ith type of segment ring for heat exchange. qi is the heat exchange per unit area (W/m2) of the ith type segment ring installed with a heat exchange tube, which is of the air type, ground source type, or dual-purpose type. en, Qsource is the heat transferred by the tunnel (W)
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
