scholarly journals INFO Sheet A12: Reference System, Denmark Solar domestic hot water system for single-family house

2017 ◽  
Author(s):  
Simon Furbo ◽  
Janne Dragsted
Keyword(s):  
Reference System ◽  
Water System ◽  
Hot Water ◽  
Single Family ◽  
Domestic Hot Water ◽  
Family House

scholarly journals Investigation of temperature drop in domestic hot water circuit

2018 ◽  
Vol 44 ◽  
pp. 00158
Author(s):  
Ilona Rzeźnik
Keyword(s):  
Experimental Investigation ◽  
Energy Savings ◽  
Temperature Drop ◽  
Pump Energy ◽  
Working Time ◽  
Hot Water ◽  
Single Family ◽  
Domestic Hot Water ◽  
Circulation Pump ◽  
Family House

The results of experimental investigation of determining the time of temperature drop in domestic hot water circuit were presented in this paper on the example of single-family house. The test were carried out on vertical sections of installations made of PE-X/Al/PE pipes (cross-linked polyethylene and aluminum) with and without insulation. The temperature drop process was investigated in temperature range typical for domestic hot water installation from 55ºC to 40ºC. On the basis of the obtained results with appropriate adjustment of the working time of circulation pump, energy savings of 90% were achieved.

scholarly journals Influence of the quantity profile of the domestic hot water demand and the energy demand for the heating in a single-family house on the SCOP of the air-to-water heat pump

2018 ◽  
Vol 44 ◽  
pp. 00162 ◽  
Author(s):  
Kamil Skoneczny
Keyword(s):  
Energy Efficiency ◽  
Heat Pump ◽  
Water Demand ◽  
Energy Demand ◽  
Hot Water ◽  
Single Family ◽  
Domestic Hot Water ◽  
Family House

In the article it was discussed how the energy efficiency of the air-to-water heat pump can change depending on the different ways of the building usage. The author shows that the following factors influence this efficiency: the DHW demand and the demand of the energy for the heating of the building. The article shows that it is very important to take into account the cooperation of both systems, the DHW and the heating. Two models of the SCOP calculations were discussed: in monthly and hourly steps of the calculation. For each model the following assumptions were considered: the different profiles of the domestic hot water demand and the different profiles of the demand for the heating of building.

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