As a heat source, air is the most accessible. It is readily available and practically unlimited. From an ecological point of view, it is the most advantageous source as heat taken out from the ambient air is returned back as thermal losses through the building structure. Heat pumps taking heat from the air are called “air-water“. The heat contained in the air is used directly. The heat pump evaporator is placed outside the building and the heat contained in the air warms up the refrigerant, which evaporates and turns to gas.
As the temperature of the external air varies during a heating season the performance (COP) of the heat pump varies too. However in a well designed heat pump which source of heat is air, a combination of design excellence and the fact that the used refrigerant boils at low temperatures (typically −35 °C) the effect of these seasonal temperature changes is not significant.
During most winters the period of extremely low air temperatures is in fact relatively short when compared to the heating season. For the purposes of assessing overall energy consumption the importance of this period can be ignored. At the beginning and the end of the heating season air temperatures are typically +10 °C and during this considerably longer “warmer” period the heat pump, with an output temperature of 40 / 35 °C, will be operating with COP’s of 4 – 5 which more than compensates for the short colder periods. Designed to work in Eastern Europe, where winter temperatures can reach as low as −25 °C, PZP heat pumps utilizing air will operate effectively and reliably even throughout the harshest winter.
Heat pumps utilizing ambient air as the source of energy are the most technically advanced products of PZP KOMPLET. Competitively priced they can be characterised by their performance and ease of installation. They can be used not only for heating and hot water production but they are equally suitable for swimming pools heating. The HPAW split system heat pump with its external evaporator unit can be used in all types of house and commercial applications and is suitable for radiator, floor or wall heating. The HPAW heat pumps consist of two parts which are connected to each other on site. detailed
The compact heat pump AWX utilizes external air as the source of energy. As to the technical aspect it ranks among top air-water heat pumps. It is characterized by very simple installation, favourable price and universal use for ecological heating, all-year-round hot water preparation or swimming-pool water warming with very effective operation down to an external temperature of −25°C. detailed
The HPAA air-air heat pumps represent a unique series. These devices draw natural heat from the ambient air and the produced heat is transferred by means of air circulation to the required location. They are primarily suitable for industrial applications in large-volume spaces and halls with high ceilings where heating using gas or electric heat sources can be very expensive. detailed
