Laurence_Steijger_-_SSB_2010.pdf (451.52 kB)
An air source heat pump model for operation in cold humid environments
conference contribution
posted on 2011-06-09, 13:16 authored by L.A. Steijger, Richard BuswellRichard Buswell, Vincent Smedley, Steven FirthSteven Firth, Paul RowleyThere is considerable interest in the use of heat pumps as a potential low-carbon alternative to
fossil fuel-based domestic space heating and hot water systems. In many cases, heat pumps are
combined with other energy sources such as solar thermal and/or electric resistive heating, to
ensure that building thermal loads can be met, and in order to minimise carbon emissions from
such integrated systems. Whilst meeting the comfort demands in the occupied space, relatively
complex control strategies are required in comparison to simple thermostatic control typically
implemented to control gas fired heating systems in domestic buildings. Well characterised
models of the principal components of these systems are required to explore and identify the most
appropriate strategies in simulation. However, models of air source heat pumps (ASHPs)
operating in humid climates, such as the UK, are limited. This paper presents an experimental
setup designed to capture the operation of the ASHP in conditions similar to those found
throughout a typical heating season in the UK. Results from a number of tests on a 10kW ASHP
are presented in terms of the coefficient of performance (COP) and the steady-state operation are
used to develop a model using empirical curve fitting. The overall maximum time constant is also
established. The resulting model calculates COP as a function of air humidity, air temperature on
the evaporator side and water temperature on the condenser side.
History
School
- Mechanical, Electrical and Manufacturing Engineering
Research Unit
- Centre for Renewable Energy Systems Technology (CREST)
Citation
STEIJGER, L.A. ... et al, 2010. An air source heat pump model for operation in cold humid environments. 8th International Conference on System Simulation in Buildings, Liege, Belgium, 13th-15th December.Publisher
University of LiegeVersion
- AM (Accepted Manuscript)
Publication date
2010Notes
This is a conference paper.Publisher version
Language
- en
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