23 September 2011
The performance of heat pumps has drastically improved in the field of air
conditioning, and heat pumps now serve as effective measures for CO2 reduction in the field. Meanwhile, in the field of commercial hot water supply systems where combustion-based
systems are predominant, the adoption of heat pump hot water supply systems is expected to contribute significantly to CO2 reduction. At present, the use of heat pump systems is being promoted in the field of commercial hot water supply systems. However, the optimal
design method for heat pump hot water supply systems has not yet been established due to the fact that there are different types of hot water supply systems still being sold by manufacturers and that it requires approaches and techniques in the planning and designing phases that are different from the conventional techniques. Therefore, the Heat Pump &
Thermal Storage Technology Center of Japan established a working team for the design of commercial heat pump hot water supply systems at the Center and explored the optimal method. This paper describes a design method for the construction of an optimal commercial heat pump hot water supply system and thereby strives to contribute to the widespread use of heat pump hot water supply systems in the future.