Study on the effective use of floor heating system, using heat pumps and PCM in houses: Part 1: Summary of the system and evaluation by survey

In these systems the need of floor heating is increasing by residents selecting open-plan houses But there are a few studies on floor heating using heat pump which uses less energy than other heating systems We have been developing the floor heating system using low temperature hot water and stocking heat energy in PCM and keeping inner thermal environment stable in houses which are well-insulated and airtight. We have been measuring and evaluating two houses using this system In conclusion both houses kept inner temperature stable between 17°C and 24°C during heating period using floor heating in a short time every day It is shown that making hot water in low temperature using with airconditioner and operating low power at starting time of heating contribute to low energy consumption.