Abstract
The paper presents selected technical and economic aspects related to the use of air heat pumps for the preparation of domestic hot water DHW. The research shows that heating the water in the 130 dm3 storage tank with the A21/W30-50 profile lasted an average of 130 minutes, and the heat pump consumed about 2.2 kWh of energy per one heating cycle. Heating water in a 130 dm3 storage tank from 25°C to 40°C lasted an average of 60 minutes, while heating water for another 5°C took 30 minutes. The operation of the heat pump in the higher temperature of the water in the storage tank is less effective, making the heating of water in the tank above 50°C is ineffective.
Highlights
The dominant trend in utility water heating installations is the continuous reduction of energy demand and increasing the use of free renewable energy
Solar collectors and air heat pumps are especially recommended as an alternative to electric heating, fuel oil or liquid gas
The use of a heating system integrated with an air heat pump and solar collectors requires proper adaptation of the installation as well as an economic justification for the investment
Summary
The dominant trend in utility water heating installations is the continuous reduction of energy demand and increasing the use of free renewable energy. Heat pumps have become a relatively popular solution used to heat domestic hot water. This is mainly due to the low purchase price and the simplicity of assembly of this system. The main argument is lower operating costs Such association is a viable alternative in the absence of a natural gas connection. The use of a heating system integrated with an air heat pump and solar collectors requires proper adaptation of the installation as well as an economic justification for the investment. The main justification for associating the solar collector system and the heat pump are the rising prices of traditional fuels or the lack of availability of cheaper heat energy carriers [6]. The integration of solar collectors with a heat pump will be more expensive to invest at each of them separately, but in this way we get the cheapest and most stable heating system for hot water outside the heating season
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
