you are here: Tips - heat pumps Fluid in the heat pump brine system Ground-type heat pumps are often referred to as brine heat pumps. The name comes from brine, a solution based on NaCl salt. This fluid circulated in the brine circuit and transported the heat from the ground to the heat pump exchanger. Nowadays, salt solutions are no longer used in similar solutions, mainly due to the corrosive properties of this fluid and have been replaced mainly by glycols. read more Determination of the bivalence point in the operation of the heat pump The decisive parameter when the additional heat source will be activated is the outdoor temperature. Knowing the building's heat demand and the heat pump's heating power characteristics, the so-called bivalence point, which is the temperature limit up to which the air source heat pump works alone. read more System integration with an air source heat pump with solar collectors The dominant trend in domestic water heating and central heating installations is the continuous reduction of energy demand and increasing the use of free renewable energy. The whole is in line with the European Union's strategy of reducing CO 2 emissions and the development of renewable energy sources. read more Room cooling with a PVC heat pump for heating domestic hot water The heat pump is designed for heating domestic hot water - both in the version with a capacitive heater (eg PCWU 200K-2.3kW) and in the version without the heater (PCWU-3.8H-A3), it can fulfill an additional function - cooling the rooms. Importantly - apart from a small additional investment cost related to the purchase of ventilation elements, this function does not increase the current operating costs. read more Air source heat pump for heating domestic water PCWU-3,8H-A3 The HEWALEX PCWU-3,8H-A3 air heat pump for domestic water heating is very popular among our customers. To ensure full satisfaction with the use of this product, we are constantly improving the offered pump, while trying to maintain a relatively low price. read more Horizontal ground heat exchangers Horizontal ground heat exchangers are one of the possibilities of using a ground heat source. The amount of heat that can be taken from a given unit of area depends on the type of soil. The principle is a general one - the more cohesive soil and / or humid, the more heat can be downloaded d 2 of land. read more Heat pumps as a cheap way to heat swimming pools In Polish conditions, the use of the open-air swimming pool is limited to only 20-40 days a year. To extend this time up to three times, you can heat the pool water through a properly selected heating system. read more Hewalex heat pumps Observing the development of interest in renewable energy sources, Hewalex expanded its offer with heat pumps. Apart from solar collectors, heat pumps can provide good solutions for an ecological and energy-saving heating system. read more Fluid in the heat pump brine system Determination of the bivalence point in the operation of the heat pump System integration with an air source heat pump with solar collectors Room cooling with a PVC heat pump for heating domestic hot water Air source heat pump for heating domestic water PCWU-3,8H-A3 Horizontal ground heat exchangers Heat pumps as a cheap way to heat swimming pools Hewalex heat pumps Copyright © 2006 - 2014 Hewalex