Due to global warming, we are experiencing milder winter seasons and then, without the pleasant transitional period of spring, we suddenly find ourselves in hot summer days. An option for both heating and cooling design is the use of water-based radiant systems. Radiant systems are particularly suitable for combination with renewable energy sources, provide high sensible output, and can be used for both, heating and cooling. This study aims to describe the process of preparation for experimental measurements of the floor, ceiling, and wall radiant system. The advantage of these dry radiant systems is the possibility of installing them in existing buildings. Dry radiant systems are especially suitable as part of retrofitting during building renovations. The heating/cooling source is an air-to-water heat pump located on the roof of the building. The paper shows building a laboratory with radiant systems that worked together with a heat pump. We tested three radianst systems (radiant floor, ceiling and wall systems) in heating mode. We measured power (heat flux) of three radiant systems. The measurement was taken during one winter day from 10.02.2023 to 11.02.2023. The average exterior temperature during the winter day of February 10, 2023 was 0.74 °C, the average power of the floor system was around 66 W/m2, the average power of the ceiling system was 53 W/m2 and the average power of the wall system was 83 W/m2. The electricity consumption of the heat pump during February 10, 2023 was 37 kWh. It can be concluded that the radiant systems operated in heating mode are reliable. Equithermal regulation with a heat source (heat pump) ensured the required water temperatures in the supply pipe for all three radiant systems and ensured reliable operation of the radiant systems in heating mode. In today´s energy and environmental crisis, it is highly desirable to design low-exergy systems in combination with renewable and environmental energy sources.
| File Size : | 1
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| Note : | This product is unavailable in Russia, Belarus |
| Number of Pages : | 8 |
| Product Code(s) : | D-CH-24-C119 |
| Published : | 2024 |
