A New Method for Calculation of Short Time-step g-function of Vertical Ground Heat Exchangers

Release time:2018-09-10|Hits:

Affiliation of Author(s):School of Control Science and Engineering

Teaching and Research Group:Injection theory and application laboratry

Journal:Applied Thermal Engineering

Place of Publication:United Kingdom

Key Words:Ground heat exchangers; G-function; Simplified CMILS model; Short time-step response;

Abstract:The composite medium infinite line source model (CMILS) was recently developed to describe the heat transfer of borehole ground heat exchanges. But this model is very complicated and time-consuming to calculate the solutions, which limit its practical applications. This paper presents a method to simplify the CMILS model and develops short time-step response g-functions using the simplified CMILS model. The advantage of the new short time-step response g-functions is that they are simple in calculation with comparable accuracy compared with CMILS model.

All the Authors:贾磊,Wenjian Cai

First Author:Jianping Wei

Indexed by:Journal paper

Correspondence Author:Lei Wang

Discipline:Engineering

First-Level Discipline:Control Science and Engineering

Document Type:J

Volume:99

Page Number:776-783

ISSN No.:1359-4311

Translation or Not:no

Date of Publication:2016-02-01

Included Journals:SCI