Measurement data on domestic hot water consumption and related energy use in hotels, nursing homes and apartment buildings in Norway

Harald Taxt Walnum,Åse Lekang Sørensen,Karolina Stråby

doi:10.1016/j.dib.2021.107228

Abstract

The data article describes detailed measurements of domestic hot water (DHW) consumption in 12 Norwegian buildings. Included in this study are 4 hotels, 4 nursing homes, and 4 apartment buildings in the greater Oslo region. Flow and temperature measurements were performed on the DHW production system in each building's heating plant, for a duration of at least 6 weeks. The measurements were conducted with an interval of 1 s, and then averaged for 2 s before analysis in order to reduce data noise and measurement uncertainties. The data set includes flow rates, temperatures, energy for consumed hot water (CHW) and distribution losses in the hot water circulation (HWC). Reuse potentials consist of analyses related to flow rates, energy use and distribution losses, e.g. in peak flow rates analysis or DHW energy flexibility simulations. The measurements were performed within the research project “Energy for domestic hot water in the Norwegian low emission Society” (VarmtVann2030).

Highlights

Measurement data on domestic hot water consumption and related energy use in hotels, nursing homes and apartment buildings in Norway
Reuse potentials consist of analyses related to flow rates, energy use and distribution losses, e.g. in peak flow rates analysis or domestic hot water (DHW) energy flexibility simulations
Renewable Energy, Sustainability and the Environment Domestic hot water (DHW) consumption and energy use in buildings CSV files Tables Flow and temperature measurements were performed on the main supply for 12 buildings

Summary

Description of buildings and measurement periods

Measurements are performed in 12 buildings: 4 hotels (HO), 4 nursing homes (NH), and 4 apartment buildings (AB). There were large differences in the layout and several of them do not work as intended Either they were not properly balanced, so that the water only circulated in a limited part of the system, or blinded after some renovation work on the system. HO4 is a city hotel, but with a restaurant and large kitchen facilities. The main difference between the nursing homes is the room density (number of resident rooms per total area). Most hot food is made at centralized kitchens and transported to the nursing homes. In some buildings systems had malfunctioning non-return valves, resulting in periods with negative flow rates and increased cold-water temperatures.

Dataset 2: energy data with hourly resolution

Measurement equipment

Measurement setup

Findings

Calculations