Performance Characteristics of Tandem Heat Pump System using Deep Ocean Water

Abstract

The studies on the low-temperature deep ocean water are being performed to meet the needs of developing new renewable energy sources. This study experimented on a heating and cooling system that uses the deep ocean water as a heat source in a laboratory equipped with the water intake system. First, experiments on direct cooling using the deep ocean water of yearlong temperatures at 5℃ or less were performed. The results of the experiments were compared with those of the conventional cooling systems to verify the cooling performances and the power requirements of the direct cooling system using the deep ocean water. The deep ocean water, as a heat source for heating, may be more disadvantageous than the surface ocean water in terms of the energy saving of a heat pump system. The relative purity of the deep ocean water may prove to be more advantageous in terms of the fouling and the maintenance of the ocean water heat exchangers. Therefore, the cost of energy required for the operation and the cost of maintenance for the fouling in the heat pump system will be compared in the future. This can be achieved through the fouling experiments on the ocean water heat exchangers using various heat sources of several temperatures of the deep ocean water, the surface ocean water, the underground ocean water, and others.e in a laboratory equipped with the water intake system. First, experiments on direct cooling using the deep ocean water of yearlong temperatures at 5℃ or less were performed. The results of the experiments were compared with those of the conventional cooling systems to verify the cooling performances and the power requirements of the direct cooling system using the deep ocean water. The deep ocean water, as a heat source for heating, may be more disadvantageous than the surface ocean water in terms of the energy saving of a heat pump system. The relative purity of the deep ocean water may prove to be more advantage