Cooling Performance of Cooling Tower-Assisted Ground-Coupled Heat Pump (GCHP) System Applied in Hospital Building

Title & Authors
Cooling Performance of Cooling Tower-Assisted Ground-Coupled Heat Pump (GCHP) System Applied in Hospital Building
Sohn, Byonghu; Lee, Doo-Young; Min, Kyung-Chon;

Abstract
This paper presents the measurement and analysis results for the cooling performance of ground-coupled heat pump (GCHP) system using a cooling tower as a supplemental heat rejector. In order to demonstrate the performance of the hybrid approach, we installed the monitoring equipments including sensors for measuring temperature and power consumption, and measured operation parameters from May 1 to October 30, 2014. The results showed that the entering source temperature of brine returning from the ground heat exchanger was in a range of design target temperature. Leaving load temperatures to building showed an average value of $\small{11.4^{\circ}C}$ for cooling season. From the analysis, the daily performance factor (PF) of geothermal heat pumps ranged from 4.4 to 5.2, while the daily PF of hybrid GCHP system varied from 3.0 to 4.0 over the entire cooling season.
Keywords
Hybrid ground-coupled heat pump system;Cooling performance;Cooling tower;Measurement;
Language
Korean
Cited by
1.
Application of a Multiple Linear Regression and an Artificial Neural Network Model for the Heating Performance Analysis and Hourly Prediction of a Large-Scale Ground Source Heat Pump System, Energy and Buildings, 2018
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