Abstract
In the present study, a fuel cell driven ground source heat pump (GSHP) system is applied in a community building and heat pump system performance is analyzed by computational methods. Conduction heat transfer between the brine pipe and ground is analyzed by TEACH code in order to predict the performance of the heat pump system. The predicted coefficient of performance (COP) of the heat pump system and the energy cost were compared with the variation of the location of the objective building, the water saturation rate of the soil, and the driven powers of the heat pump system. Compared to the late-night electricity driven system, a significant reduction of energy cost can be accomplished by employing the fuel cell driven heat pump system. This is due to the low cost of electricity production of the fuel cell system and to the application of the recovered waste heat generated during the electricity production process to the heating of the community building.
Highlights
The development of renewable energy is becoming an urgent issue as global warming is accelerated due to resource depletion and environmental pollution
In this study a ground source heat pump heating and cooling system driven by a fuel cell was computationally analyzed, in which heat pump system performance and economic feasibility were considered
The results are as follows: (1) While the fuel cell driven heat pump system incurs a high initial installation cost, the cost is expected to decrease as fuel cell technology is developed
Summary
The development of renewable energy is becoming an urgent issue as global warming is accelerated due to resource depletion and environmental pollution. A hybrid ground source heat pump is a system that uses a ground heat exchanger along with an assistant heat source apparatus such as a cooling tower and boiler. A system using a ground heat exchanger and an air source as the assistant heat source can be considered as a hybrid geothermal heat pump system. These systems are developed to assist condenser heat radiation during cooling and evaporator heat absorption during heating, increasing system efficiency, resulting in a saving in electricity. İnallı et al [17] analyzed seasonal ground temperature distribution and system performance while varying the burying depth of the ground heat exchanger in the horizontal geothermal heat pump system. The waste heat from the fuel cell operation can be stored in the heat storage tank and used as a heat source, increasing the heat pump system coefficient of performance (COP) during heating
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