A control method for increasing the heat usage efficiency of nearly-zero-energy buildings with heat pumps
Loading...
Access rights
openAccess
publishedVersion
URL
Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
This publication is imported from Aalto University research portal.
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Other link related to publication (opens in new window)
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Other link related to publication (opens in new window)
Date
2020
Major/Subject
Mcode
Degree programme
Language
en
Pages
11
Series
Agronomy Research, Volume 18, issue Special Issue 1, pp. 958-968
Abstract
In the retrofitting of older buildings with central heating into nearly zero-energy buildings more and more air to water heat pumps are used. These heat pumps are normally connected to heating systems, producing heat only on demand. The greatest demand for heat occurs when the outside temperature and therefore the COP of the pump is lowest. Outside temperature varies during the day, meaning it is possible to save energy by producing and storing heat in a situation where the COP is higher. To determine the periods with higher COP values weather forecast data and COP curves are used. The data enables to rank and select time periods for heat production. This in conjunction with the heat demand curve of the building enables to create an operation schedule for the heat pump. The aim of the study is to develop heat pump control methods for renovated buildings to comply with nearly zero energy building codes. Dependant on the heat pump and weather conditions, up to 10% of the electricity demand for heating can be decreased.Description
Keywords
Heat demand modelling, Heat production scheduling, Heating season, Optimization, Temperature fluctuations
Other note
Citation
Pihlap, H, Annuk, A, Lehtonen, M, Muiste, S, Tooming, A & Allik, A 2020, ' A control method for increasing the heat usage efficiency of nearly-zero-energy buildings with heat pumps ', Agronomy Research, vol. 18, no. Special Issue 1, pp. 958-968 . https://doi.org/10.15159/AR.20.032