Ground Temperature Gradients Surrounding
Horizontal Heat Pump Collectors In A Maritime
Climate Region
Author(s)
M. Greene, N. Burke, J. Lohan & R. Clarke
Abstract
While earlier investigators have undertaken to identify ground temperature
gradients about horizontal heat exchangers or collectors in continental climates,
this paper reports the findings of a similar study undertaken in the Irish maritime
climate. The ground source heat pump employed extracts heat from the ground
using a horizontal collector buried at a depth of 1m. Measurement of both the
local air and ground temperature was made during the 2007 Winter-Spring
heating season. Ground temperature gradients were established to a depth of
1.8m by measuring temperature at up to seven different vertical depths.
Temperature gradients are presented for five different locations that include one
reference location outside the collector region and four locations within the
collector region. These highlight the impact of diurnal and seasonal factors, as
well as ground cover and composition and heat pump operation on ground
temperature. These results will support the development of optimised collector
design and collector ground composition for maritime climates, as well as
providing important input data for the validation of numerical models.
Keywords: ground/soil temperature gradient, ground source heat pump,
horizontal collector, maritime climate, thermal storage, renewable energy.
1 Introduction
Increased awareness of climate change and the need for sustainable development
is creating renewed interest in natural resources and their utilisation [1, 2]. This
study focuses on characterising the latent thermal energy in the ground surface
layer so that the design of Ground Source Heat Pump (GSHP) horizontal
Keywords
ground/soil temperature gradient, ground source heat pump,
horizontal collector, maritime climate, thermal storage, renewable energy.
Related Book
Other papers in this volume
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