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<\/p>\nOffices, healthcare institutions, hospitals, schools, and other large buildings often have a significant demand for cooling, especially during the summer months. A modern air-to-water heat pump offers an efficient solution. In addition to heating, these units can provide active cooling. Thanks to their high capacity and modular design, they are ideally suited for larger buildings and complex installations. In this article, you will learn how cooling with an air-to-water heat pump works, which systems are most suitable, and what installers and building managers need to take into account.<\/p>\n
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An air-to-water heat pump operates using a reversible refrigeration cycle. When heating is required, the unit extracts heat from the outside air using a refrigerant and transfers it to the building's heating system. When cooling is needed, this process is reversed. In this mode, the evaporator functions as a condenser and the condenser as an evaporator. The refrigerant flow changes direction within the heat pump, which is made possible by a four-way valve. The system subsequently produces chilled water that is distributed throughout the building via the emission system (such as underfloor heating or radiators). The result is a stable and comfortable indoor temperature without the use of traditional, high-energy-consuming cooling installations.<\/p>\n
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For commercial and public buildings, active cooling is typically used. In this process, the heat pump generates cold energy, which is transferred to the water in the building\u2019s distribution system. This works exceptionally well with low-temperature systems, such as underfloor heating.<\/p>\n
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Key benefits of active cooling with a heat pump include:<\/strong><\/p>\n <\/p>\n For buildings with a high cooling demand, the system can be expanded with multiple heat pumps in a cascade configuration to ensure sufficient cooling capacity is available.<\/p>\n <\/p>\n <\/p>\n The efficiency of cooling with a heat pump is closely linked to the type of emission system used. Low-temperature systems operate most efficiently.<\/p>\n <\/p>\n The most suitable systems are underfloor heating\/cooling, climate ceilings, and fan coils. With underfloor heating, the concrete floor is cooled, resulting in a stable climate with low energy costs. Climate ceilings offer a large exchange surface that cools effectively. Fan coil units can be used to deliver high cooling capacities quickly.<\/p>\n <\/p>\n <\/p>\n <\/p>\n Air-to-water heat pumps specifically developed for the commercial market offer several key advantages for large buildings:<\/p>\n <\/p>\n <\/p>\n These benefits allow offices, hospitals, hotels, healthcare facilities, and other commercial buildings to be cooled efficiently with a centralized system.<\/p>\n <\/p>\n <\/p>\n When cooling via floor systems or climate ceilings, dew point monitoring is essential. If the surface temperature drops below the dew point, condensation can occur. The optimal water temperature for cooling the building can be calculated within the Building Management System (BMS) and configured by the installer. Preventing condensation is a priority in commercial buildings.<\/p>\n <\/p>\n Key design principles:<\/strong><\/p>\n\n
Effective emission systems for cooling<\/h2>\n
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<\/p>\nAdvantages for large commercial buildings<\/h2>\n
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Preventing condensation<\/h2>\n
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